PC World Komputer 1996 February

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Interrupt List Release 47 Last change 8/13/95 This compilation is Copyright (c) 1989,1990,1991,1992,1993,1994,1995 Ralf Brown --------!---FILELIST------------------------- Please redistribute the following files unmodified as a group, in a quartet of archives named INTER47A through INTER47D (preferably the original authenticated PKZIP archives): INTERRUP.1ST the read-me file, containing credits, availability info INTERRUP.A INT 00 through INT 13/2F \ INTERRUP.B INT 13/30 through INT 15/4F\ INTERRUP.C INT 15/50 through INT 1A/5F \ INTERRUP.D INT 1A through INT 21/43 \ total 1856 pages at INTERRUP.E INT 21/44 through INT 21/5F \ 60 lines per page, INTERRUP.F INT 21/60 through INT 21/FE > 1979 with INTPRINT -p INTERRUP.G INT 21/FF through INT 2F/42 / (7400 entries) INTERRUP.H INT 2F/43 through INT 2F/CF / (2734 tables) INTERRUP.I INT 2F/D0 through INT 5A / INTERRUP.J INT 5B through INT 61 / INTERRUP.K INT 62 through INT 6E / INTERRUP.L INT 6F through INT 7F / INTERRUP.M INT 80 through INT FF / INTERRUP.PRI a brief introduction to interrupts INTPRINT.COM a simple formatter that also generates a list summary INTPRINT.DOC instructions for INTPRINT OVERVIEW.LST brief listing of major uses of each interrupt 86BUGS.LST a listing of CPU bugs and undocumented features CMOS.LST a description of the CMOS RAM data bytes FARCALL.LST APIs available through FAR CALLs GLOSSARY.LST a glossary of terms, abbreviations, and acronyms MEMORY.LST format of the BIOS data area OPCODES.LST a listing of recent and undocumented CPU instructions PORTS.LST a listing of I/O ports CATEGORY.KEY descriptions of divider-line category letters COMBINE.BAT combine the pieces of the list into a single file The following files should be distributed in an archive called INTER47E: 86BUGSnn.ZIP programs to test for CPU bugs INT.* invoke interrupts from commandline INT2GUID.* convert list into TurboPower GUIDE or POPHELP database INT2HLP.ZIP convert list into QuickHelp database INT2QH.* program to convert list into QuickHelp database INTHLP??.ZIP Interrupt Helper viewer for the interrupt list INTHELP.* convert list into TurboPower GUIDE database INTLIST.E Epsilon extension for handling list INTPRINT.C source code for INTPRINT RB2NG???.ZIP convert list into Norton Guides database INTERVUE.EXE indexed interrupt list browser INTLIST.ICO Windows icon for INTERVUE IV.BAT wrapper for INTERVUE Finally, the following should be distributed in an archive called INTER47F: INT2WHLP.ZIP convert list into Windows Help database HINTSRCH.ZIP WinHelp DLL for full-text searches of interrupt list WH_ED*.ZIP WinHelp-file editor --------!---CONTACT_INFO--------------------- If you notice any mistakes or omissions, please let me know! It is only with YOUR help that the list can continue to grow at the current rate. Please send all changes to me rather than distributing a modified version of the list. Please read the file INTERRUP.1ST before asking me any questions. You may find that they have already been addressed. Ralf Brown Internet: ralf@telerama.lm.com UUCP: {uunet,harvard}!telerama.lm.com!ralf FIDO: Ralf Brown 1:129/26.1 or post a message to me in the DR_DEBUG echo (I probably won't see it unless you address it to me) CIS: >INTERNET:ralf@telerama.lm.com I reply to all e-mail submissions and inquiries, but some of my replies bounce because of bad return paths. If you don't get a response from me within a reasonable period of time, send it again with a better return path (starting at harvard or ucbvax for UUCP, from the Internet for others). --------!------------------------------------ See INTERRUP.1ST for the key to system abbreviations and a list of the trademarks mentioned here. --------!---DISCLAIMER----------------------- DISCLAIMER: THIS MATERIAL IS PROVIDED "AS IS". I verify the information contained in this list to the best of my ability, but I cannot be held responsible for any problems caused by use or misuse of the information, especially for those functions not officially documented. If it is marked "internal" or undocumented, you should check it carefully to make sure it works the same way in your version of the software (and please let me know whether or not it works the same way). Information marked with "???" is known to be incomplete or guesswork. --------!---FLAGS---------------------------- The use of -> instead of = signifies that the indicated register or register pair contains a pointer to the specified item, rather than the item itself. One or more letters may follow the interrupt number; they have the following meanings: U - undocumented function, u - partially documented function, P - available only in protected mode, R - available only in real or V86 mode, C - callout or callback (usually hooked rather than called), O - obsolete (no longer present in current versions) --------!---CATEGORIES----------------------- The ninth column of the divider line preceding an entry usually contains a classification code (the entry has not been classified if that character is a dash). The codes currently in use are: A - applications, a - access software (screen readers, etc), B - BIOS, b - vendor-specific BIOS extensions, C - CPU-generated, c - caches/spoolers, D - DOS kernel, d - disk I/O enhancements, E - DOS extenders, e - electronic mail, F - FAX, f - file manipulation, G - debuggers/debugging tools, g - games, H - hardware, h - vendor-specific hardware, I - IBM workstation/terminal emulators, i - system info/monitoring, J - Japanese, j - joke programs, K - keyboard enhancers, k - file/disk compression, l - shells/command interpreters, M - mouse/pointing device, m - memory management, N - network, n - non-traditional input devices, O - other operating systems, P - printer enhancements, p - power management, Q - DESQview/TopView and Quarterdeck programs, R - remote control/file access, r - runtime support, S - serial I/O, s - sound/speech, T - DOS-based task switchers/multitaskers, t - TSR libraries U - resident utilities, u - emulators, V - video, v - virus/antivirus, W - MS Windows, X - expansion bus BIOSes, y - security, * - reserved (and not otherwise classified) --------C-00--------------------------------- INT 00 C - CPU-generated - DIVIDE ERROR Desc: generated if the divisor of a DIV or IDIV instruction is zero or the quotient overflows the result register; DX and AX will be unchanged. Notes: on an 8086/8088, the return address points to the following instruction on an 80286+, the return address points to the divide instruction an 8086/8088 will generate this interrupt if the result of a division is 80h (byte) or 8000h (word) SeeAlso: INT 04 --------G-00--------------------------------- INT 00 - Zenith - ROM DEBUGGER Desc: invokes the ROM Debugger when at the BIOS level; equivalent to pressing Ctrl-Alt-Ins on booting. Note: since DOS revectors INT 00, it is necessary to restore this vector to its original ROM BIOS value in order to invoke the debugger once DOS loads SeeAlso: INT 03"Columbia" --------C-01--------------------------------- INT 01 C - CPU-generated - SINGLE STEP Desc: generated after each instruction if TF (trap flag) is set; TF is cleared on invoking the single-step interrupt handler Notes: interrupts are prioritized such that external interrupts are invoked after the INT 01 pushes CS:IP/FLAGS and clears TF, but before the first instruction of the handler executes used by debuggers for single-instruction execution tracing, such as MS-DOS DEBUG's T command SeeAlso: INT 03 --------C-01--------------------------------- INT 01 C - CPU-generated (80386+) - DEBUGGING EXCEPTIONS Desc: generated by the CPU on various occurrences which may be of interest to a debugger program Note: events which may trigger the interrupt: Instruction address breakpoint fault - will return to execute inst Data address breakpoint trap - will return to following instruction General detect fault, debug registers in use Task-switch breakpoint trap undocumented 386/486 opcode F1h - will return to following instruc SeeAlso: INT 03 --------H-02--------------------------------- INT 02 C - external hardware - NON-MASKABLE INTERRUPT Desc: generated by the CPU when the input to the NMI pin is asserted Notes: return address points to start of interrupted instruction on 80286+ on the 80286+, further NMIs are disabled until the next IRET instruction, but one additional NMI is remembered by the hardware and will be serviced after the IRET instruction reenables NMIs maskable interrupts may interrupt the NMI handler if interrupts are enabled although the Intel documentation states that this interrupt is typically used for power-failure procedures, it has many other uses on IBM-compatible machines: Memory parity error: all except Jr, CONV, and some machines without memory parity Breakout switch on hardware debuggers Coprocessor interrupt: all except Jr and CONV Keyboard interrupt: Jr, CONV I/O channel check: CONV, PS50+ Disk-controller power-on request: CONV System suspend: CONV Real-time clock: CONV System watch-dog timer, time-out interrupt: PS50+ DMA timer time-out interrupt: PS50+ Low battery: HP 95LX Module pulled: HP 95LX --------C-03--------------------------------- INT 03 C - CPU-generated - BREAKPOINT Desc: generated by the one-byte breakpoint instruction (opcode CCh) Notes: used by debuggers to implement breakpoints, such as MS-DOS DEBUG's G command also used by Turbo Pascal versions 1,2,3 when {$U+} specified return address points to byte following the breakpoint instruction called by Novell DOS 7 EMM386 after displaying an exception error message (GPF, illegal opcodes, etc.) and before waiting for user input called by QEMM-386 if the user presses 'I' (undocumented) when prompted after an exception error message SeeAlso: INT 01 --------G-03--------------------------------- INT 03 - Columbia PCs (desktop,VP portables) - ROM DEBUGGER Desc: invokes the ROM Debugger if INT 03 has not been revectored; equivalent to pressing Esc on booting. SeeAlso: INT 00"Zenith",INT 03"Realia" --------G-03--------------------------------- INT 03 - Realia COBOL - DEBUGGER SUPPORT Note: Realia COBOL checks for a signature eight bytes prior to the interrupt handler when it starts up BUG: if the offset of the INT 03 vector is less than 8, the compiler and all executables generated by it will crash the system SeeAlso: INT 03"Columbia" --------G-03--------------------------------- INT 03 U - Watcom WVIDEO, Watcom WD - OUTPUT DEBUGGING MESSAGE STACK: DWORD selector DWORD offset of ASCIZ message to display Notes: the INT 03h instruction which invokes the debugger must be followed by a JMP SHORT and the signature string "WVIDEO" to check whether this interface is available, define a public byte variable named ___WD_Present, which the debugger will set to 01h before running the program SeeAlso: AX=0910h --------U-03--------------------------------- INT 03 - DTown Utilities - POP UP Program: DTown Software Development's DTown Utilities contains various tools which are useful to programmers, such as a memory viewer and disassembler Note: DTU pops up on INT 03 (if not hooked by a debugger) to allow the user to inspect memory or code when the machine crashes; various memory managers will invoke INT 03 when displaying a CPU exception error message (either automatically or when the user presses a particular key) --------G-030910----------------------------- INT 03 - Soft-ICE - BACK DOOR COMMANDS - DISPLAY STRING IN Soft-ICE WINDOW AX = 0910h SI = magic value 4647h ('FG') DI = magic value 4A4Dh ('JM') DS:DX -> ASCIZ string to display (max 100 bytes, 0Dh OK) Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc. SeeAlso: INT 03"WVIDEO" --------G-030911----------------------------- INT 03 - Soft-ICE - BACK DOOR COMMANDS - EXECUTE Soft-ICE COMMAND AX = 0911h SI = magic value 4647h ('FG') DI = magic value 4A4Dh ('JM') DS:DX -> ASCIZ command string (max 100 bytes, 0Dh OK) --------G-030912----------------------------- INT 03 - Soft-ICE - BACK DOOR COMMANDS - GET BREAKPOINT INFORMATION AX = 0912h SI = magic value 4647h ('FG') DI = magic value 4A4Dh ('JM') Return: BH = entry number of last breakpoint set BL = type of last breakpoint set (see #0001) DH = entry number of last breakpoint to be triggered DL = type of last triggered breakpoint (see #0001) Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc. SeeAlso: AX=0913h,AX=0914h (Table 0001) Values for Soft-ICE breakpoint type: 00h BPM (breakpoint register types) 01h I/O 02h INTerrupt 03h BPX (INT 03h-style breakpoint) 04h reserved 05h range --------G-030913----------------------------- INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - SET Soft-ICE BREAKPOINT AX = 0913h SI = magic value 4647h ('FG') DI = magic value 4A4Dh ('JM') DS:DX -> breakpoint structure (see #0002) Return: AX = status 00h successful BX = breakpoint number 03h breakpoint table full 06h memory limit error 07h I/O limit error 09h range limit error 16h duplicate breakpoint SeeAlso: AX=0912h,AX=0914h Format of Soft-ICE breakpoint structure: Offset Size Description (Table 0002) 00h BYTE breakpoint type (see #0003) 01h DWORD breakpoint address 1 (lower range limit for memory BPs, interrupt number for interrupt BPs, address of BP for execution BPs, I/O address (only word) for I/O BPs) 05h DWORD breakpoint address 2 (upper range limit for memory BPs, optional value to check for for interrupt BPs, overlay number (0 = root) for execution BPs) 09h DWORD breakpoint address 3 0Dh BYTE breakpoint mode 1 (see #0004) (for interrupt BPs = register to check 00h no value checking 01h check AL 02h check AH 03h check AX) 0Eh BYTE breakpoint mode 2 (see #0004) 0Fh BYTE breakpoint size (00h byte, 01h word, 03h dword) 10h BYTE breakpoint pass count before program stop 11h BYTE breakpoint state Note: all unused fields should contain zeros (Table 0003) Values for Soft-ICE breakpoint type: 00h memory location 01h memory range 03h I/O 04h interrupt 05h execution break (Table 0004) Values for Soft-ICE breakpoint mode: 01h read 02h write 04h execution --------G-030914----------------------------- INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - REMOVE Soft-ICE BREAKPOINT AX = 0914h SI = magic value 4647h ('FG') DI = magic value 4A4Dh ('JM') BX = breakpoint number (returned by AX=0913h) Return: BX = ??? Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc. SeeAlso: AX=0912h,AX=0913h --------C-04--------------------------------- INT 04 C - CPU-generated - INTO DETECTED OVERFLOW Desc: the INTO instruction will generate this interrupt if OF (Overflow Flag) is set; otherwise, INTO is effectively a NOP Note: may be used for convenient overflow testing (to prevent errors from propagating) instead of JO or a JNO/JMP combination SeeAlso: INT 00 --------B-05--------------------------------- INT 05 - PRINT SCREEN Desc: dump the current text screen to the first printer Notes: normally invoked by the INT 09 handler when PrtSc key is pressed, but may be invoked directly by applications byte at 0050h:0000h contains status used by default handler 00h not active 01h PrtSc in progress FFh last PrtSc encountered error default handler is at F000h:FF54h in IBM PC and 100%-compatible BIOSes BUG: some old BIOSes/applications appear to destroy BP on return SeeAlso: INT 10/AH=12h/BL=20h,INT 5E"TI Professional",INT 80"Phar Lap" --------C-05--------------------------------- INT 05 C - CPU-generated (80186+) - BOUND RANGE EXCEEDED Desc: generated by BOUND instruction when the value to be tested is less than the indicated lower bound or greater than the indicated upper bound. Note: returning from this interrupt re-executes the failing BOUND instruction --------P-05454A----------------------------- INT 05 U - PSPS v2.01 - EJECT PAGE AX = 454Ah ('EJ') Program: PSPS is shareware PostScript PrintScreen utility by A.N.D. Technologies Note: sends a ^D to the current printer SeeAlso: AX=4E57h,AX=5053h,AX=554Eh --------P-054E57----------------------------- INT 05 U - PSPS v2.01 - SET PARAMETERS AX = 4E57h ('NW') ES:SI -> 11-byte buffer containing new settings Return: buffer filled SeeAlso: AX=454Ah,AX=5053h,INT 17/AH=63h --------P-055053----------------------------- INT 05 U - PSPS v2.01 - GET PARAMETERS AX = 5053h ('PS') ES:SI -> 11-byte buffer for settings Return: buffer filled SeeAlso: AX=4E57h,AX=554Eh,INT 17/AH=64h --------P-05554E----------------------------- INT 05 U - PSPS v2.01 - UNINSTALL AX = 554Eh ('UN') Program: PSPS is shareware PostScript PrintScreen utility by A.N.D. Technologies SeeAlso: AX=454Ah,AX=4E57h,INT 17/AH=62h --------C-06--------------------------------- INT 06 C - CPU-generated (80286+) - INVALID OPCODE Desc: this interrupt is generated when the CPU attempts to execute an invalid opcode (most protected-mode instructions are considered invalid in real mode) or a BOUND, LDS, LES, or LIDT instruction which specifies a register rather than a memory address Notes: return address points to beginning of invalid instruction with proper programming, this interrupt may be used to emulate instructions which do not exist; many 386 BIOSes emulate the 80286 undocumented LOADALL instruction which was removed from the 80386+ generated by the 80386+ when the LOCK prefix is used with instructions other than BTS, BTR, BTC, XCHG, XADD (486), CMPXCHG (486), INC, DEC, NOT, NEG, ADD, ADC, SUB, SBB, AND, OR, or XOR, or any instruction not accessing memory. SeeAlso: INT 0C"CPU",INT 0D"CPU" --------b-06--------------------------------- INT 06 C - HP 95LX - SLEEP/WAKEUP Desc: this interrupt is called just before going into light or deep (shutdown) sleep and just after returning from light or deep sleep SeeAlso: INT 0B"HP 95LX",INT 15/AX=4DD4h,INT 15/AH=4Eh --------V-06--------------------------------- INT 06 U - no-name clone - GRAPHICS CHARACTER TABLE (NOT A VECTOR!) Desc: points at graphics data for characters 00h-7Fh of the current font SeeAlso: INT 43"EGA",INT 44"VIDEO" --------C-07--------------------------------- INT 07 C - CPU-generated (80286+) - PROCESSOR EXTENSION NOT AVAILABLE Desc: this interrupt is automatically called if a coprocessor instruction is encountered when no coprocessor is installed Note: can be used to emulate a numeric coprocessor in software SeeAlso: INT 09"MATH UNIT PROTECTION" --------H-08--------------------------------- INT 08 C - IRQ0 - SYSTEM TIMER Desc: generated 18.2 times per second by channel 0 of the 8254 system timer, this interrupt is used to keep the time-of-day clock updated Notes: programs which need to be invoked regularly should use INT 1C unless they need to reprogram the timer while still keeping the time-of-day clock running at the proper rate default handler is at F000h:FEA5h in IBM PC and 100%-compatible BIOSes may be masked by setting bit 0 on I/O port 21h SeeAlso: INT 1C,INT 4A,INT 50"DESQview",INT 58"DoubleDOS",INT 70,INT 78"GO32" SeeAlso: INT D8"Screen Thief" --------C-08--------------------------------- INT 08 C - CPU-generated (80286+) - DOUBLE EXCEPTION DETECTED Desc: called when multiple exceptions occur on one instruction, or an exception occurs in an exception handler Notes: called in protected mode if an interrupt above the defined limit of the interrupt vector table occurs return address points at beginning of instruction with errors or the beginning of the instruction which was about to execute when the external interrupt caused the exception if an exception occurs in the double fault handler, the CPU goes into SHUTDOWN mode (which circuitry in the PC/AT converts to a reset); this "triple fault" is a faster way of returning to real mode on many 80286 machines than the standard keyboard controller reset --------H-09--------------------------------- INT 09 C - IRQ1 - KEYBOARD DATA READY Desc: this interrupt is generated when data is received from the keyboard. This is normally a scan code (from either a keypress *or* a key release), but may also be an ACK or NAK of a command on AT-class keyboards. Notes: this IRQ may be masked by setting bit 1 on I/O port 21h if the BIOS supports an enhanced (101/102-key) keyboard, it calls INT 15/AH=4Fh after reading the scan code (see #0005) from the keyboard and before further processing; all further processing uses the scan code returned from INT 15/AH=4Fh the default interrupt handler is at F000h:E987h in 100%-compatible BIOSes the interrupt handler performs the following actions for certain special keystrokes: Ctrl-Break clear keyboard buffer, place word 0000h in buffer, invoke INT 1B, and set flag at 0040h:0071h SysReq invoke INT 15/AH=85h (SysReq is often labeled SysRq) Ctrl-Numlock place system in a tight wait loop until next INT 09 Ctrl-Alt-Del jump to BIOS startup code (either F000h:FFF0h or the destination of the jump at that address) Shift-PrtSc invoke INT 05 Ctrl-Alt-Plus (HP Vectra) enable keyclick Ctrl-Alt-Plus (many clones) set clock speed to high Ctrl-Alt-Minus (HP Vectra) reduce keyclick volume Ctrl-Alt-Minus (many clones) set clock speed to low Ctrl-Alt-SysReq (HP Vectra) generate hard reset DRDOS hooks this interrupt to control the cursor shape (underscore/ half block) for overwrite/insert mode DR Multiuser DOS hooks this interrupt for cursor shape control and to control whether Ctrl-Alt-Del reboots the current session or the entire system SeeAlso: INT 05,INT 0B"HP 95LX",INT 15/AH=4Fh,INT 15/AH=85h,INT 16,INT 1B SeeAlso: INT 2F/AX=A901h,INT 4A"TI Professional",INT 51"DESQview" SeeAlso: INT 59"DoubleDOS",INT 79"GO32" (Table 0005) Values for keyboard make/break (scan) code: 01h Esc 31h N 02h 1 ! 32h M 03h 2 @ 33h , < 63h F16 04h 3 # 34h . > 64h F17 05h 4 $ 35h / ? 65h F18 06h 5 % 36h Right Shift 66h F19 07h 6 ^ 37h Grey* 67h F20 08h 7 & 38h Alt 68h F21 09h 8 * 39h SpaceBar 69h F22 0Ah 9 ( 3Ah CapsLock 6Ah F23 0Bh 0 ) 3Bh F1 6Bh F24 0Ch - _ 3Ch F2 6Ch -- 0Dh = + 3Dh F3 6Dh EraseEOF 0Eh Backspace 3Eh F4 0Fh Tab 3Fh F5 6Fh Copy/Play 10h Q 40h F6 11h W 41h F7 12h E 42h F8 72h CrSel 13h R 43h F9 14h T 44h F10 74h ExSel 15h Y 45h NumLock 75h -- 16h U 46h ScrollLock 76h Clear 17h I 47h Home 18h O 48h UpArrow 19h P 49h PgUp 1Ah [ { 4Ah Grey- 1Bh ] } 4Bh LeftArrow 1Ch Enter 4Ch Keypad 5 1Dh Ctrl 4Dh RightArrow 1Eh A 4Eh Grey+ 1Fh S 4Fh End 20h D 50h DownArrow 21h F 51h PgDn 22h G 52h Ins 23h H 53h Del 24h J 54h SysReq ---non-key codes--- 25h K 00h kbd buffer full 26h L 56h left \| (102-key) 27h ; : 57h F11 AAh self-test complete 28h ' " 58h F12 E0h prefix code 29h ` ~ E1h prefix code 2Ah Left Shift 5Ah PA1 EEh ECHO 2Bh \ | 5Bh F13 (LWin) F0h prefix code (key break) 2Ch Z 5Ch F14 (RWin) FAh ACK 2Dh X 5Dh F15 (Menu) FCh diag failure (MF-kbd) 2Eh C FDh diag failure (AT-kbd) 2Fh V FEh RESEND 30h B FFh kbd error/buffer full Notes: scan codes 56h-E1h are only available on the extended (101/102-key) keyboard and Host Connected (122-key) keyboard; scan codes 5Bh-5Dh are only available on the 122-key keyboard and the Microsoft Natural Keyboard; scan codes 5Eh-76h are only available on the 122-key keyboard in the default configuration, break codes are the make scan codes with the high bit set; make codes 60h,61h,70h, etc. are not available because the corresponding break codes conflict with prefix codes (code 2Ah is available because the self-test result code AAh is only sent on keyboard initialization). An alternate keyboard configuration can be enabled on AT and later systems with enhanced keyboards, in which break codes are the same as make codes, but prefixed with an F0h scan code prefix code E0h indicates that the following make/break code is for a "gray" duplicate to a key which existed on the original PC keyboard; prefix code E1h indicates that the following make code has no corresponding break code (currently only the Pause key generates no break code) the Microsoft Natural Keyboard sends make codes 5Bh, 5Ch, and 5Dh (all with an E0h prefix) for the Left Windows, Right Windows, and Menu keys on the bottom row the SysReq key is often labeled SysRq SeeAlso: #0460 --------C-09--------------------------------- INT 09 C - CPU-generated (80286,80386) - PROCESSOR EXTENSION PROTECTION ERROR Desc: called if the coprocessor attempts to access memory outside a segment boundary; it may occur at an arbitrary time after the coprocessor instruction was issued Notes: until the condition is cleared or the coprocessor is reset, the only coprocessor instruction which may be used is FNINIT; WAIT or other coprocessor instructions will cause a deadlock because the coprocessor is still busy waiting for data for the 486+, a coprocessor protection error generates an INT 0D SeeAlso: INT 07"CPU" --------*-09--------------------------------- INT 09 P - internal hardware - RESERVED BY Intel (80486) Note: this exception has been moved to INT 0D SeeAlso: INT 09"MATH",INT 0D --------H-0A--------------------------------- INT 0A C - IRQ2 - LPT2 (PC), VERTICAL RETRACE INTERRUPT (EGA,VGA) Notes: the TOPS and PCnet adapters use this interrupt request line by default DOS 3.2 revectors IRQ2 to a stack-switching routine on ATs and above, the physical data line for IRQ2 is labeled IRQ9 and connects to the slave 8259. The BIOS redirects the interrupt for IRQ9 back here. under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process many VGA boards do not implement the vertical retrace interrupt, including the IBM VGA Adapter where the traces are either cut or removed SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32" --------H-0A--------------------------------- INT 0A C - IRQ2 - Tandy 1000-series HARD DISK Notes: this interrupt may be masked by setting bit 2 on I/O port 21h the Tandy 1000, 1000A, and 1000HD use IRQ2 for the hard disk; the 1000EX, HX, RLX, RLX-HD, RLX-B, RLX-HD-B use IRQ5 instead; the 1000RL, RL-HD, SL, SL/2, TL, TL/2, and TL/3 are jumper-selectable for either IRQ2 or IRQ5 (default IRQ5); the 1000SX and TX are DIP-switch selectable for IRQ2 or IRQ5 (default IRQ2); the RSX and RSX-HD use IRQ14. Tandy systems which use IRQ2 for the hard disk interrupt use IRQ5 for vertical retrace. SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71 --------H-0A--------------------------------- INT 0A - IRQ2 - ROLAND MPU MIDI INTERFACE Note: newer Roland cards and MIDI interfaces by other manufacturers use a jumper-selectable IRQ, but software and hardware generally defaults to IRQ2 SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32" --------C-0A--------------------------------- INT 0A CP - CPU-generated (80286+) - INVALID TASK STATE SEGMENT Desc: automatically called during a task switch if the new TSS specified by the task gate is invalid for any of the following reasons: TSS limit is less than 43 (80286) or 103 (80386/80486) LDT selector invalid or segment not present null SS selector, or SS selector outside LDT/GDT limit stack segment is read-only stack segment DPL differs from new CPL, or RPL <> CPL CS selector is outside LDT/GDT limit or not code non-conforming code segment's DPL differs from CPL conforming code segment's DPL > CPL DS/ES selectors outside LDT/GDT limit or not readable segments Note: the handler must use a task gate in order to have a valid TSS under which to execute; it must also reset the busy bit in the new TSS SeeAlso: INT 0B"CPU" --------H-0B--------------------------------- INT 0B C - IRQ3 - SERIAL COMMUNICATIONS (COM2) Desc: automatically asserted by the UART when COM2 needs attention, if the UART has been programmed to generate interrupts Notes: the TOPS and PCnet adapters use this interrupt request line as an alternate on PS/2s, COM2 through COM8 share this interrupt; on many PC's, COM4 shares this interrupt may be masked by setting bit 3 on I/O port 21h SeeAlso: INT 0C"COM1",INT 53"DESQview",INT 5B"DoubleDOS",INT 7B"GO32" --------C-0B--------------------------------- INT 0B CP - CPU-generated (80286+) - SEGMENT NOT PRESENT Desc: generated when loading a segment register if the segment descriptor indicates that the segment is not currently in memory, unless the segment is an LDT (see INT 0A"CPU") or stack segment (see INT 0C"CPU") needed by a task switch Note: may be used to implement virtual memory by loading in segments as they are accessed, clearing the "not present" bit after loading SeeAlso: INT 0A"CPU",INT 0E"hardware" --------h-0B--------------------------------- INT 0B - HP 95LX - LOW-LEVEL KEYBOARD HANDLER Desc: this is the lowest-level keyboard handler on an HP 95LX palmtop Note: debounces key, places the keycode in I/O register 60h, and calls INT 09 SeeAlso: INT 09,INT 0D"HP 95LX",INT 15/AX=4DD4h --------H-0C--------------------------------- INT 0C C - IRQ4 - SERIAL COMMUNICATIONS (COM1) Desc: automatically asserted by the UART when COM1 needs attention, if the UART has been programmed to generate interrupts BUG: this vector is modified but not restored by Direct Access v4.0, and may be left dangling by other programs written with the same version of compiled BASIC Notes: on many PC's, COM3 shares this interrupt may be masked by setting bit 4 on I/O port 21h SeeAlso: INT 0B"COM2",INT 54"DESQview",INT 5C"DoubleDOS",INT 7C"GO32" --------C-0C--------------------------------- INT 0C C - CPU-generated (80286+) - STACK FAULT Desc: this interrupt is generated in protected mode on a stack overflow or underflow, or if an inter-level transition or task switch references a stack segment marked "not present"; it is generated in real mode on accessing a word operand at SS:FFFFh Note: the 80286 will shut down in real mode if SP=1 before a push. On the PC AT and compatibles, external circuitry generates a reset on shutdown. SeeAlso: INT 0B"CPU",INT 0D"CPU" --------I-0C--------------------------------- INT 0C - IBM SYSTEM 36/38 WORKSTATION EMULATION - API POINTER Desc: the IBM System 36/38 emulator may be invoked through a private API, whose entry point address (see #0006) is offset 100h in the segment pointed at by this vector (Table 0006) Call the System 36/38 emulator API entry point with: AH = function 03h update screen 05h select next session AL = session number (00h-03h) Return: AL = session type code 00h not active 01h display session 02h printer session FEh invalid session number DS = requested session's data segment (0 if not active) (see #0007) Return: ??? Format of System 36/38 emulator's data area: Offset Size Description (Table 0007) 13Eh BYTE bit flags for status line indicators turned on since this byte last zerod 13Fh BYTE bit flags for status line indicators turned off since this byte last set to FFh 140h WORD offset of EBCDIC to ASCII translation 146h WORD offset of EBCDIC screen buffer 148h WORD offset of EC (engineering change) level signature 150h BYTE "KEYI" 151h BYTE 5250 key scan code to be sent to remote 15Bh BYTE "SYSAV" 15Dh BYTE 5250 cursor column 15Eh BYTE 5250 cursor row 167h BYTE "DVCTAD" 178h BYTE "FLAGS" 184h BYTE "SESSNOAD" 193h BYTE "STNAD" 198h BYTE "NSDS" Note: offsets are from the interrupt handler's segment --------H-0D--------------------------------- INT 0D C - IRQ5 - FIXED DISK (PC,XT), LPT2 (AT), reserved (PS/2) Notes: under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process the Tandy 1000, 1000A, and 1000HD use IRQ2 for the hard disk; the 1000EX, HX, RLX, RLX-HD, RLX-B, RLX-HD-B use IRQ5 instead; the 1000RL, RL-HD, SL, SL/2, TL, TL/2, and TL/3 are jumper-selectable for either IRQ2 or IRQ5 (default IRQ5); the 1000SX and TX are DIP-switch selectable for IRQ2 or IRQ5 (default IRQ2); the RSX and RSX-HD use IRQ14. Tandy systems which use IRQ2 for the hard disk interrupt use IRQ5 for vertical retrace. may be masked by setting bit 5 on I/O port 21h SeeAlso: INT 0E"IRQ6",INT 0F"IRQ7",INT 55"DESQview",INT 5D"DoubleDOS" SeeAlso: INT 7D"GO32" --------H-0D--------------------------------- INT 0D C - IRQ5 - Tandy 1000 60 Hz RAM REFRESH Desc: used to ensure that the dynamic RAM retains its contents in earlier 1000-series models; later models use normal DMA for RAM refresh (some early models have no DMA unless it is added via an expansion card) SeeAlso: INT 55 --------h-0D--------------------------------- INT 0D - HP 95LX - INFRARED INTERRUPT Desc: this interrupt is used to perform communications over the infrared data link SeeAlso: INT 0B"HP 95LX",INT 0E"HP 95LX",INT 15/AX=4DD4h --------C-0D--------------------------------- INT 0D C - CPU-generated (80286+) - GENERAL PROTECTION VIOLATION Desc: the CPU generates this interrupt when it detects a protection violation which does not fit under any other category having a separate interrupt Notes: called in real mode when an instruction accesses a memory operand extending beyond offset FFFFh (i.e. WORD at FFFFh or DWORD at FFFDh or higher) in segment CS, DS, ES, FG, or GS a PUSH MEM or POP MEM instruction contains an invalid bit encoding in the second byte an instruction exceeds the maximum length allowed (10 bytes for 80286, 15 bytes for 80386/80486) an instruction wraps from offset FFFFh to offset 0000h called in protected mode on protection violations not covered by INT 06 through INT 0C, including segment limit violations write to read-only segments accesses using null DS or ES selectors accesses to segments with privilege greater than CPL wrong descriptor type called on 80486 protected-mode floating-point protection fault SeeAlso: INT 09"80486",INT 0C"STACK" --------H-0E--------------------------------- INT 0E C - IRQ6 - DISKETTE CONTROLLER Desc: this interrupt is generated by the floppy disk controller on completion of an operation Notes: default handler is at F000h:EF57h in IBM PC and 100%-compatible BIOSes may be masked by setting bit 6 on I/O port 21h SeeAlso: INT 0D"IRQ5",INT 56"DESQview",INT 5E"DoubleDOS",INT 7E"GO32" --------C-0E--------------------------------- INT 0E C - CPU-generated (80386+ native mode) - PAGE FAULT Desc: this interrupt is generated in protected and virtual-86 modes on attempting to access a 4K memory page whose page table entry has the "present" bit cleared Note: used to implement virtual memory SeeAlso: INT 0B"hardware" --------h-0E--------------------------------- INT 0E C - HP 95LX - EXTERNAL CARD INTERRUPT SeeAlso: INT 0D"HP 95LX",INT 0F"HP 95LX",INT 15/AX=4DD4h --------H-0F--------------------------------- INT 0F C - IRQ7 - PARALLEL PRINTER Desc: this interrupt is generated by the LPT1 printer adapter when the printer becomes ready Notes: most printer adapters do not reliably generate this interrupt the 8259 interrupt controller generates an interrupt corresponding to IRQ7 when an error condition occurs SeeAlso: INT 0D"LPT2",INT 57"DESQview",INT 5F"DoubleDOS",INT 7F"GO32" --------h-0F--------------------------------- INT 0F C - HP 95LX - REAL-TIME CLOCK SeeAlso: INT 0E"HP 95LX",INT 15/AX=4DD4h,INT 70 --------C-10--------------------------------- INT 10 C - CPU-generated (80286+) - COPROCESSOR ERROR Desc: this interrupt is generated by the CPU when the -ERROR pin is asserted by the coprocessor Note: AT's and clones usually wire the coprocessor to use IRQ13, but not all get it right SeeAlso: INT 09"hardware",INT 75 --------V-1000------------------------------- INT 10 - VIDEO - SET VIDEO MODE AH = 00h AL = desired video mode (see #0009) Return: AL = video mode flag (Phoenix, AMI BIOS) 20h mode > 7 30h modes 0-5 and 7 3Fh mode 6 AL = CRT controller mode byte (Phoenix 386 BIOS v1.10) Desc: specify the display mode for the currently active display adapter Notes: IBM standard modes do not clear the screen if the high bit of AL is set (EGA or higher only) the Tseng ET4000 chipset is used by the Orchid Prodesigner II, Diamond SpeedSTAR VGA, Groundhog Graphics Shadow VGA, Boca Super X VGA, Everex EV-673 the installation check for Ahead adapters is the signature "AHEAD" at C000h:0025h the installation check for Paradise adapters is the signature "VGA=" at C000h:007Dh the installation check for Oak Tech OTI-037/057/067/077 chipsets is the signature "OAK VGA" at C000h:0008h the installation check for ATI adapters is the signature "761295520" at C000h:0031h; the byte at C000h:0043h indicates the chipset revision: 31h for 18800 32h for 18800-1 33h for 18800-2 34h for 18800-4 35h for 18800-5 the two bytes at C000h:0040h indicate the adapter type "22" EGA Wonder "31" VGA Wonder "32" EGA Wonder800+ the byte at C000h:0042h contains feature flags bit 1: mouse port present bit 4: programmable video clock the byte at C000h:0044h contains additional feature flags if chipset byte > 30h (see #0008) the installation check for Genoa video adapters is the signature 77h XXh 99h 66h at C000h:NNNNh, where NNNNh is stored at C000h:0037h and XXh is 00h for Genoa 6200/6300 11h for Genoa 6400/6600 22h for Genoa 6100 33h for Genoa 5100/5200 55h for Genoa 5300/5400 for SuperEGA BIOS v2.41+, C000h:0057h contains the product level for SuperEGA BIOS v3.0+, C000h:0070h contains the signature "EXTMODE", indicating support for extended modes SeeAlso: AX=0070h,AX=007Eh,AX=10E0h,AX=10F0h,AH=40h,AX=6F05h,AH=FFh"GO32" SeeAlso: INT 33/AX=0028h,INT 5F/AH=00h,INT 62/AX=0001h Index: installation check;Tseng ET4000|installation check;Ahead video cards Index: installation check;Oak Technologies|installation check;ATI video cards Index: installation check;Paradise video|installation check;Genoa video cards Bitfields for ATI additional feature flags: Bit(s) Description (Table 0008) 0 70 Hz non-interlaced display 1 Korean (double-byte) characters 2 45 MHz memory clock rather than 40 MHz 3 zero wait states 4 paged ROMs 6 no 8514/A monitor support 7 HiColor DAC (Table 0009) Values for video mode: text/ text pixel pixel colors disply scrn system grph resol box resolution pages addr 00h = T 40x25 8x8 320x200 16gray 8 B800 CGA,PCjr,Tandy = T 40x25 8x14 320x350 16gray 8 B800 EGA = T 40x25 8x16 320x400 16 8 B800 MCGA = T 40x25 9x16 360x400 16 8 B800 VGA 01h = T 40x25 8x8 320x200 16 8 B800 CGA,PCjr,Tandy = T 40x25 8x14 320x350 16 8 B800 EGA = T 40x25 8x16 320x400 16 8 B800 MCGA = T 40x25 9x16 360x400 16 8 B800 VGA 02h = T 80x25 8x8 640x200 16gray 4 B800 CGA,PCjr,Tandy = T 80x25 8x14 640x350 16gray 8 B800 EGA = T 80x25 8x16 640x400 16 8 B800 MCGA = T 80x25 9x16 720x400 16 8 B800 VGA 03h = T 80x25 8x8 640x200 16 4 B800 CGA,PCjr,Tandy = T 80x25 8x14 640x350 16/64 8 B800 EGA = T 80x25 8x16 640x400 16 8 B800 MCGA = T 80x25 9x16 720x400 16 8 B800 VGA 04h = G 40x25 8x8 320x200 4 . B800 CGA,PCjr,EGA,MCGA,VGA 05h = G 40x25 8x8 320x200 4gray . B800 CGA,PCjr,EGA = G 40x25 8x8 320x200 4 . B800 MCGA,VGA 06h = G 80x25 8x8 640x200 2 . B800 CGA,PCjr,EGA,MCGA,VGA = G 80x25 . . mono . B000 HERCULES.COM on HGC [14] 07h = T 80x25 9x14 720x350 mono var B000 MDA,Hercules,EGA = T 80x25 9x16 720x400 mono . B000 VGA 08h = T 132x25 8x8 1056x200 16 . B800 ATI EGA/VGA Wonder [2] = T 132x25 8x8 1056x200 mono . B000 ATI EGA/VGA Wonder [2] = G 20x25 8x8 160x200 16 . . PCjr, Tandy 1000 = G 90x43 8x8 720x348 mono . B000 Hercules + MSHERC.COM = G 90x45 8x8 720x360 mono . B000 Hercules + HERKULES [11] = G 90x29 8x12 720x348 mono . . Hercules + HERCBIOS [15] 09h = G 40x25 8x8 320x200 16 . . PCjr, Tandy 1000 = G 90x43 8x8 720x348 mono . . Hercules + HERCBIOS [15] 0Ah = G 80x25 8x8 640x200 4 . . PCjr, Tandy 1000 0Bh = reserved (EGA BIOS internal use) = G 80x25 8x8 640x200 16 . . Tandy 1000 SL/TL [13] 0Ch = reserved (EGA BIOS internal use) 0Dh = G 40x25 8x8 320x200 16 8 A000 EGA,VGA 0Eh = G 80x25 8x8 640x200 16 4 A000 EGA,VGA 0Fh = G 80x25 8x14 640x350 mono 2 A000 EGA,VGA 10h = G 80x25 8x14 640x350 4 2 A000 64k EGA = G . . 640x350 16 . A000 256k EGA,VGA 11h = G 80x30 8x16 640x480 mono . A000 VGA,MCGA,ATI EGA,ATI VIP 12h = G 80x30 8x16 640x480 16/256K . A000 VGA,ATI VIP = G 80x30 8x16 640x480 16/64 . A000 ATI EGA Wonder = G . . 640x480 16 . . UltraVision+256K EGA 13h = G 40x25 8x8 320x200 256/256K . A000 VGA,MCGA,ATI VIP 14h = T 132x25 Nx16 . 16 . . XGA, IBM Enhanced VGA [3] = T 132x25 8x16 1056x400 16/256K . . Cirrus CL-GD5420/5422/5426 = G 80x25 8x8 640x200 . . . Lava Chrome II EGA = G . . 640x400 16 . . Tecmar VGA/AD 15h = G 80x25 8x14 640x350 . . . Lava Chrome II EGA 16h = G 80x25 8x14 640x350 . . . Lava Chrome II EGA = G . . 800x600 16 . . Tecmar VGA/AD 17h = T 132x25 . . . . . Tecmar VGA/AD = T 80x43 8x8 640x348 16 4 B800 Tseng ET4000 BIOS [10] = G 80x34 8x14 640x480 . . . Lava Chrome II EGA 18h = T 80x30 9x16 720x480 16 1 A000 Realtek RTVGA [12] = T 132x25 . . mono . B000 Cirrus 5320 chipset = T 132x44 8x8 1056x352 mono . B000 Tseng Labs EVA = T 132x44 9x8 1188x352 4gray 2 B000 Tseng ET3000 chipset = T 132x44 8x8 1056x352 16/256 2 B000 Tseng ET4000 chipset = G 80x34 8x14 640x480 . . . Lava Chrome II EGA = G 1024x768 16 . . Tecmar VGA/AD 19h = T 80x43 9x11 720x473 16 1 A000 Realtek RTVGA [12] = T 132x25 8x14 1056x350 mono . B000 Tseng Labs EVA = T 132x25 9x14 1188x350 4gray 4 B000 Tseng ET3000 chipset = T 132x25 8x14 1056x350 16/256 4 B000 Tseng ET4000 chipset = T 132x34 . . mono . B000 Cirrus 5320 chipset 1Ah = T 80x60 9x8 720x480 16 1 A000 Realtek RTVGA [12] = T 132x28 8x13 1056x364 mono . B000 Tseng Labs EVA = T 132x28 9x13 1188x364 4gray 4 B000 Tseng ET3000 chipset = T 132x28 8x13 1056x364 16/256 4 B000 Tseng ET4000 chipset = T 132x44 . . mono . B000 Cirrus 5320 chipset = G . . 640x350 256 . . Tecmar VGA/AD 1Bh = T 132x25 9x14 1188x350 16 1 A000 Realtek RTVGA [12] = G . . 640x400 256 . . Tecmar VGA/AD 1Ch = T 132x25 . . . . . Cirrus 5320 chipset = T 132x30 9x16 1188x480 16 1 A000 Realtek RTVGA [12] = G . . 640x480 256 . . Tecmar VGA/AD 1Dh = T 132x43 . . . . . Cirrus 5320 chipset = T 132x43 9x11 1188x473 16 1 A000 Realtek RTVGA [12] = G . . 800x600 256 . . Tecmar VGA/AD 1Eh = T 132x44 . . . . . Cirrus 5320 chipset = T 132x60 9x8 1188x480 16 1 A000 Realtek RTVGA [12] 1Fh = G 100x75 8x8 800x600 16 1 A000 Realtek RTVGA 20h = T 132x25 . . 16 . . Avance Logic AL2101 = G 40x16 . 240x128 mono . B000 HP 95LX/100LX/200LX = G 120x45 8x16 960x720 16 1 A000 Realtek RTVGA 21h = T 80x25 . . mono . B000 HP 200LX = T 132x30 . . 16 . . Avance Logic AL2101 = T 132x44 9x9 1188x396 16/256K . B800 WD90C = T 132x44 9x9 1188x396 16 . B800 Diamond Speedstar 24X = T 132x60 . . 16 2 B800 Tseng ET4000 chipset [10] = G 80x43 8x8 720x348 mono . B000 DESQview 2.x+Hercules [4] = G 128x48 8x16 1024x768 16 1 A000 Realtek RTVGA [12] 22h = T 132x43 . . . . . Allstar Peacock (VGA) = T 132x43 . . 16 . . Avance Logic AL2101 = T 132x44 8x8 1056x352 . . B800 Tseng Labs EVA = T 132x44 9x8 1188x352 16/256K 2 B800 Tseng ET3000 chipset = T 132x44 8x8 1056x352 16/256K 2 B800 Tseng ET4000 chipset = T 132x44 8x8 1056x352 . . . Ahead Systems EGA2001 = T 132x44 8x8 1056x352 16 2 B800 Ahead B = T 132x44 8x9 1056x398 16 . . STB Lightspeed ET4000/W32P = T 132x44 . . 16 . . Orchid Prodesigner VGA = G 80x43 8x8 720x348 mono . B800 DESQview 2.x+Hercules [4] = G 96x64 8x16 768x1024 16 1 A000 Realtek RTVGA 23h = T 132x25 6x14 792x350 . . B800 Tseng Labs EVA = T 132x25 9x14 1188x350 16/256K 4 B800 Tseng ET3000 chipset = T 132x25 8x14 1056x350 16/256 4 B800 Tseng ET4000 chipset = T 132x25 8x14 1056x350 . . . Ahead Systems EGA2001 = T 132x25 8x14 1056x350 16 4 B800 Ahead B = T 132x25 8x8 1056x200 16 . B800 ATI EGA Wonder,ATI VIP = T 132x25 . . . . . Cirrus 5320 chipset = T 132x28 . . . . . Allstar Peacock (VGA) = T 132x28 . . 16 . . Orchid Prodesigner VGA = T 132x60 . . 16 . . Avance Logic AL2101 = G 128x48 8x16 1024x768 4 1 A000 Realtek RTVGA 24h = T 80x30 . . 16 . . Avance Logic AL2101 = T 132x25 . . . . . Allstar Peacock (VGA) = T 132x25 . . 16 . . Orchid Prodesigner VGA = T 132x28 6x13 792x364 . . B800 Tseng Labs EVA = T 132x28 9x13 1188x364 16/256K 4 B800 Tseng ET3000 chipset = T 132x28 8x12 1056x336 16 1 B800 Ahead B = T 132x28 8x13 1056x364 16/256K 4 B800 Tseng ET4000 chipset = T 132x28 8x14 1056x392 16 . . STB Lightspeed ET4000/W32P = T 132x28 . . . . . Cirrus 5320 chipset = G 64x32 8x16 512x512 256 1 A000 Realtek RTVGA 25h = T 80x43 . . 16 . . Avance Logic AL2101 = G 80x60 8x8 640x480 . . A000 Tseng Labs EVA = G 80x60 8x8 640x480 16/256K 1 A000 Tseng ET3000/4000 chipset = G . . 640x480 16 . . VEGA VGA = G 80x60 8x8 640x480 16 . A000 Orchid Prodesigner VGA = G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 26h) = G . . 640x480 16 . . NEC GB-1 = G . . 640x480 16 . . Cirrus 5320 chipset = G . . 640x400 256 . . Realtek RTVGA 26h = T 80x60 8x8 640x480 . . . Tseng Labs EVA = T 80x60 8x8 640x480 16/256K 3 B800 Tseng ET3000/4000 chipset = T 80x60 . . . . . Allstar Peacock (VGA) = T 80x60 . . 16 . . Orchid ProDesigner VGA = T 80x60 . . 16 . . Avance Logic AL2101 = G 80x60 8x8 640x480 . . . Ahead Systems EGA2001 = G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 25h) = G . . 640x480 256 . . Realtek RTVGA 27h = T 132x25 8x8 1056x200 mono . B000 ATI EGA Wonder,ATI VIP = G . . 720x512 16 . . VEGA VGA = G . . 720x512 16 . . Genoa = G 100x75 8x8 800x600 256 1 A000 Realtek RTVGA [12] = G . . 960x720 16 . . Avance Logic AL2101 28h = T ???x??? . . . . . VEGA VGA = G . . 512x512 256 . . Avance Logic AL2101 = G . . 1024x768 256 . . Realtek RTVGA (1meg) 29h = G . . 640x400 256 . . Avance Logic AL2101 = G . . 800x600 16 . . VEGA VGA = G 100x37 8x16 800x600 16 . A000 Orchid = G . . 800x600 16 . A000 STB,Genoa,Sigma = G . . 800x600 16 . . Allstar Peacock (VGA) = G 100x37 8x16 800x600 16/256K 1 A000 Tseng ET3000/4000 chipset = G . . 800x600 ??? . . EIZO MDB10 = G . . 800x600 16 . . Cirrus 5320 chipset = G NA . 800x600 16 . . Compaq QVision 1024/1280 = G . . 1024x1024 256 . . Realtek RTVGA BIOS v3.C10 2Ah = T 100x40 . . . . . Allstar Peacock (VGA) = T 100x40 8x16 800x640 16 . . Orchid Prodesigner VGA = T 100x40 8x15 800x600 16/256K 4 B800 Tseng ET3000/4000 chipset = T 100x40 8x15 800x600 16 . . STB Lightspeed ET4000/W32P = G . . 640x480 256 . . Avance Logic AL2101 = G . . 1280x1024 16 . . Realtek RTVGA 2Bh = G . . 800x600 16 . . Avance Logic AL2101 2Ch = G . . 800x600 256 . . Avance Logic AL2101 2Dh = G . . 640x350 256 . . VEGA VGA = G . . 640x350 256/256K . A000 Orchid, Genoa, STB = G 80x25 8x14 640x350 256/256K 1 A000 Tseng ET3000/4000 chipset = G . . 640x350 256 . . Cirrus 5320 chipset = G 80x25 8x14 640x350 256 . . STB Lightspeed ET4000/W32P = G . . 768x1024 16 . . Avance Logic AL2101 2Eh = G . . 640x480 256 . . VEGA VGA = G 80x30 8x16 640x480 256/256K . A000 Orchid = G . . 640x480 256/256K . A000 STB,Genoa,Sigma = G 80x30 8x16 640x480 256/256K 1 A000 Tseng ET3000/4000 chipset = G . . 640x480 256/256K . . Compaq QVision 1024/1280 = G . . 768x1024 256 . . Avance Logic AL2101 2Fh = T 160x50 8x8 1280x400 16 4 B800 Ahead B (Wizard/3270) = G . . 720x512 256 . . VEGA VGA = G . . 720x512 256 . . Genoa = G 80x25 8x16 640x400 256/256K 1 A000 Tseng ET4000 chipset = G . . 1024x768 4 . . Avance Logic AL2101 30h = G . . 800x600 256 . . VEGA VGA = G 100x37 8x16 800x600 256/256K . A000 Orchid = G . . 800x600 256/256K . A000 STB,Genoa,Sigma = G . . 720x350 2 . . 3270 PC = G . . 800x600 256 . . Cardinal = G . . . . . B800 AT&T 6300 = G 100x37 8x16 800x600 256/256K 1 A000 Tseng ET3000/4000 chipset = G . . 1024x768 16 . . Avance Logic AL2101 31h = G . . 1024x768 256 . . Avance Logic AL2101 32h = T 80x34 8x10 . 16 4 B800 Ahead B (Wizard/3270) = G . . 640x480 256 . . Compaq QVision 1024/1280 33h = T 132x44 8x8 . 16 . B800 ATI EGA Wonder,ATI VIP = T 80x34 8x8 . 16 4 B800 Ahead B (Wizard/3270) 34h = T 80x66 8x8 . 16 4 B800 Ahead B (Wizard/3270) = G . . 800x600 256 . . Compaq QVision 1024/1280 36h = G . . 960x720 16 . . VEGA VGA, STB = G . . 960x720 16 . A000 Tseng ET3000 only = G . . 1280x1024 16 . . Avance Logic AL2101 37h = T 132x44 8x8 . mono . B800 ATI EGA Wonder,ATI VIP = G . . 1024x768 16 . . VEGA VGA = G 128x48 8x16 1024x768 16 . A000 Orchid = G . . 1024x768 16 . A000 STB,Genoa,Sigma = G . . 1024x768 16 . . Definicon = G 128x48 8x16 1024x768 16 1 A000 Tseng ET3000/4000 chipset = G . . 1024x768 16 . . Compaq QVision 1024/1280 = G . . 1280x1024 256 . . Avance Logic AL2101 38h = G . . 1024x768 256 . . STB VGA/EM-16 Plus (1MB) = G 128x48 8x16 1024x768 256/256K 1 A000 Tseng ET4000 chipset = G . . 1024x768 256 . . Orchid ProDesigner II = G . . 1024x768 256 . . Compaq QVision 1024/1280 39h = G . . 1280x1024 16 . . Compaq QVision 1280 3Ah = G . . 1280x1024 256 . . Compaq QVision 1280 3Bh = G . . 512x480 256 . . Compaq QVision 1024/1280 3Ch = G . . 640x400 64K . . Compaq QVision 1024/1280 3Dh = G . . 1280x1024 16 . . Definicon = G 128x64 8x16 1280x1024 16 1 A000 Tseng ET4000 v3.00 [1,7] 3Eh = G . . 1280x961 16 . . Definicon = G . . 640x480 64K . . Compaq QVision 1024/1280 3Fh = G . . 1280x1024 256 . . Hercules ??? (ET4000W32) = G . . 800x600 64K . . Compaq QVision 1024/1280 40h = T 80x43 . . . . . VEGA VGA, Tecmar VGA/AD = T 80x43 . . . . . Video7 V-RAM VGA = T 80x43 . . . . . Tatung VGA = T 100x30 . . 16 . . MORSE VGA = T 100x30 . . . . . Cirrus 510/520 chipset = T 80x25 . 720x350 mono . . Genoa SuperEGA BIOS 3.0+ = G . . 320x200 64K . . Avance Logic AL2101 = G 80x25 8x16 640x400 2 1 B800 AT&T 6300, AT&T VDC600 = G 80x25 8x16 640x400 2 1 B800 Olivetti Quaderno = G 80x25 8x16 640x400 2 1 B800 Compaq Portable = G . . 1024x768 64K . . Compaq QVision 1280 41h = T 132x25 . . . . . VEGA VGA = T 132x25 . . . . . Tatung VGA = T 132x25 . . . . . Video7 V-RAM VGA = T 100x50 . . 16 . . MORSE VGA = T 100x50 . . . . . Cirrus 510/520 chipset = T 80x34 9x14 720x476 16/256K . B800 WD90C = T 80x34 9x14 . 16 . B800 Diamond Speedstar 24X = G . . 512x512 64K . . Avance Logic AL2101 = G . . 640x200 16 1 . AT&T 6300 = G 80x25 . 720x348 mono . B000 Genoa SuperEGA BIOS 3.0+ 42h = T 132x43 . . . . . VEGA VGA = T 132x43 . . . . . Tatung VGA = T 132x43 . . . . . Video7 V-RAM VGA = T 80x34 9x10 . 4 4 B800 Ahead B (Wizard/3270) = T 100x60 . . 16 . . MORSE VGA = T 100x60 . . . . . Cirrus 510/520 chipset = G 80x25 8x16 640x400 16 . . AT&T 6300, AT&T VDC600 = G . . 640x400 64K . . Avance Logic AL2101 = G 80x25 . 720x348 mono . B800 Genoa SuperEGA BIOS 3.0+ 43h = T 80x60 . . . . . VEGA VGA = T 80x60 . . . . . Tatung VGA = T 80x60 . . . . . Video7 V-RAM VGA = T 80x45 9x8 . 4 4 B800 Ahead B (Wizard/3270) = T 100x75 . . 16 . . MORSE VGA = T 80x29 . 720x348 mono . . Genoa SuperEGA BIOS 3.0+ = G . . 640x200 of 640x400 viewport AT&T 6300 (unsupported) = G . . 640x480 64K . . Avance Logic AL2101 44h = disable VDC and DEB output . AT&T 6300 = T 100x60 . . . . . VEGA VGA = T 100x60 . . . . . Tatung VGA = T 100x60 . . . . . Video7 V-RAM VGA = T 80x32 . 720x352 mono . . Genoa SuperEGA BIOS 3.0+ = G . . 800x600 64K . . Avance Logic AL2101 45h = T 132x28 . . . . . Tatung VGA = T 132x28 . . . . . Video7 V-RAM VGA = T 80x44 . 720x352 mono . . Genoa SuperEGA BIOS 3.0+ 46h = T 132x25 8x14 . mono . . Genoa 6400 = T 132x25 9x14 . mono . . Genoa SuperEGA BIOS 3.0+ = G 100x40 8x15 800x600 2 . . AT&T VDC600 47h = T 132x29 8x12 . mono . . Genoa 6400 = T 132x29 9x12 . mono . . Genoa SuperEGA BIOS 3.0+ = T 132x28 9x16 1188x448 16/256K . B800 WD90C = T 132x28 9x16 . 16 . B800 Diamond Speedstar 24X = G 100x37 8x16 800x600 16 . . AT&T VDC600 48h = T 132x32 8x12 . mono . . Genoa 6400 = T 132x32 9x11 . mono . . Genoa SuperEGA BIOS 3.0+ = G 80x50 8x8 640x400 2 . B800 AT&T 6300, AT&T VDC600 = G 80x50 8x8 640x400 2 . B800 Olivetti Quaderno 49h = T 132x44 8x8 . mono . . Genoa 6400 = T 132x44 9x8 . mono . . Genoa SuperEGA BIOS 3.0+ = G 80x30 8x16 640x480 . . . Lava Chrome II EGA 4Dh = T 120x25 . . . . . VEGA VGA = G . . 512x480 16M . . Compaq QVision 1024/1280 4Eh = T 120x43 . . . . . VEGA VGA = T 80x60 8x8 . 16/256K . B800 Oak OTI-067/OTI-077 [8] = G . . 640x400 16M . . Compaq QVision 1024/1280 4Fh = T 132x25 . . . . . VEGA VGA = T 132x60 . . . . . some Oak Tech VGA [8] = G . . 640x480 16M . . Compaq QVision 1280 50h = T 80x30 8x16 . 16/256K . B800 Trident TVGA 8800/8900 = T 80x34 . . . . . Lava Chrome II EGA = T 80x43 . . mono . . VEGA VGA = T 132x25 9x14 . mono . . Ahead Systems EGA2001 = T 132x25 9x14 . 4 4 B800 Ahead B = T 132x25 8x14 . 16 8 B800 OAK Technologies VGA-16 = T 132x25 8x14 . 16/256K . B800 Oak OTI-037/067/077 [8] = T 132x25 8x14 1056x350 16 8 B800 UM587 chipset = T 132x30 . . 16 . . MORSE VGA = T 132x30 . . . . . Cirrus 510/520 chipset = G 80x30 8x16 640x480 16 . . Paradise EGA-480 = G 80x30 8x16 640x480 16 . . NEL Electronics BIOS = G . . 640x480 mono??? . . Taxan 565 EGA = G 40x25 8x8 320x200 . . . Genoa SuperEGA BIOS 3.0+ 51h = T 80x30 8x16 . . . . Paradise EGA-480 = T 80x30 9x16 . . . . NEL Electronics BIOS = T 80x30 . . . . . Lava Chrome II EGA = T 80x43 8x11 . 16/256K . B800 Trident TVGA 8800/8900 = T 132x25 . . mono . . VEGA VGA = T 132x28 9x12 . 4 4 B800 Ahead B = T 132x43 8x8 . 16 5 B800 OAK Technologies VGA-16 = T 132x43 8x8 . 16/256K . B800 Oak OTI-037/067/077 = T 132x43 8x8 1056x344 16 5 B800 UM587 chipset = T 132x50 . . 16 . . MORSE VGA = T 132x50 . . . . . Cirrus 510/520 chipset = G 80x34 8x14 640x480 16 . . ATI EGA Wonder = G 80x25 8x8 640x200 . . . Genoa SuperEGA BIOS 3.0+ 52h = T 80x60 . . . . . Lava Chrome II EGA = T 80x60 8x8 . 16/256K . B800 Trident TVGA 8800/8900 = T 132x43 . . mono . . VEGA VGA = T 132x44 9x8 . mono . . Ahead Systems EGA2001 = T 132x44 9x8 . 4 2 B800 Ahead B = T 132x60 . . 16 . . MORSE VGA = T 132x60 . . . . . Cirrus 510/520 chipset = G 80x25 8x19 640x480 16 1 A000 AX VGA (Kanji&superimpose) = G 94x29 8x14 752x410 16 . . ATI EGA Wonder = G 100x75 8x8 800x600 16 1 A000 OAK Technologies VGA-16 = G 100x75 8x8 800x600 16 . A000 Oak OTI-037 chipset [8] = G 100x37 8x16 800x600 16 . A000 Oak OTI-067/077 chips [8] = G 100x75 8x8 800x600 16 . A000 UM587 chipset = G 128x30 8x16 1024x480 16 . . NEL Electronics BIOS 53h = T 80x25 8x16 . . . . NEL Electronics BIOS = T 80x60 . . 16 . . MORSE VGA = T 80x60 . . . . . Cirrus 510/520 chipset = T 132x25 8x14 . 16/256K . B800 Trident TVGA 8800/8900 = T 132x43 . . . . . Lava Chrome II EGA = G 80x25 8x19 640x480 16 1 A000 AX VGA (Kanji, no superimp.) = G . . 640x480 256 . . Oak VGA = G 80x30 8x16 640x480 256 . A000 Oak OTI-067/OTI-077 [8] = G 100x40 8x14 800x560 16 . . ATI EGA Wonder,ATI VIP = G . . . . . . AX PC 54h = T 132x25 . . . . . Lava Chrome II EGA = T 132x30 8x16 . 16/256K . B800 Trident TVGA 8800/8900 = T 132x43 8x8 . . . . Paradise EGA-480 = T 132x43 8x8 . . . . NEL Electronics BIOS = T 132x43 7x9 . 16/256K . B800 Paradise VGA = T 132x43 8x9 . 16/256K . B800 Paradise VGA on multisync = T 132x43 . . . . . Taxan 565 EGA = T 132x43 . . . . . AST VGA Plus = T 132x43 . . . . . Hewlett-Packard D1180A = T 132x43 7x9 . 16 . . AT&T VDC600 = T 132x43 9x9 1188x387 16/256K . B800 WD90C = T 132x43 9x9 1188x387 16/256K . B800 Diamond Speedstar 24X = T 132x43 9x9 1188x387 16/256K . B800 Diamond Stealth 24 = T 132x43 8x8 1056x350 16/256K . . Cirrus CL-GD5420/5422/5426 = T 132x50 8x8 . 16 . A000 NCR 77C22 [9] = G 100x42 8x14 800x600 16 . A000 ATI EGA Wonder, VGA Wonder = G 100x42 8x14 800x600 16 . A000 ATI Ultra 8514A, ATI XL = G . . 800x600 256 . A000 Oak VGA = G 100x37 8x16 800x600 256 . A000 Oak OTI-067/077 chips [8] 55h = T 80x66 8x8 . 16/256K . A000 ATI VIP = T 132x25 8x14 . . . . Paradise EGA-480 = T 132x25 8x14 . . . . NEL Electronics BIOS = T 132x25 7x16 . 16/256K . B800 Paradise VGA = T 132x25 8x16 . 16/256K . B800 Paradise VGA on multisync = T 132x25 . . . . . Taxan 565 EGA = T 132x25 . . . . . AST VGA Plus = T 132x25 . . . . . Hewlett-Packard D1180A = T 132x25 7x16 . 16 . . AT&T VDC600 = T 132x25 8x16 . 16 . A000 NCR 77C22 [9] = T 132x25 9x16 1188x400 16/256K . B800 WD90C = T 132x25 9x16 1188x400 16/256K . B800 Diamond Speedstar 24X = T 132x25 9x16 1188x400 16/256K . B800 Diamond Stealth 24 = T 132x25 8x14 1056x350 16/256K . . Cirrus CL-GD5420/5422/5426 = T 132x43 8x11 . 16/256K . B800 Trident TVGA 8800/8900 = G 94x29 8x14 752x410 . . . Lava Chrome II EGA = G 128x48 8x16 1024x768 16/256K . A000 ATI VGA Wonder v4+ [5] = G . . 1024x768 16/256K . . ATI VGA Wonder Plus = G . . 1024x768 16/256K . . ATI Ultra 8514A,ATI XL = G 128x48 8x16 1024x768 4 . A000 Oak OTI-067/077 chips [8] 56h = T 132x43 8x8 . 3??? 2 B000 NSI Smart EGA+ = T 132x43 7x9 . 4 . B000 Paradise VGA = T 132x43 8x9 . 4 . B000 Paradise VGA on multisync = T 132x43 . . mono . . Taxan 565 EGA = T 132x43 7x9 . 2 . . AT&T VDC600 = T 132x43 9x8 . . . . NEL Electronics BIOS = T 132x50 8x8 . 4 . A000 NCR 77C22 [9] = T 132x60 8x8 . 16/256K . B800 Trident TVGA 8800/8900 = G . . 1024x768 16 . A000 Oak VGA = G 128x48 8x16 1024x768 16 . A000 Oak OTI-067/077 chips [8] 57h = T 132x25 8x14 . 3??? 4 B000 NSI Smart EGA+ = T 132x25 7x16 . 4 . B000 Paradise VGA = T 132x25 8x16 . 4 . B000 Paradise VGA on multisync = T 132x25 9x14 . . . . NEL Electronics BIOS = T 132x25 . . mono . . Taxan 565 EGA = T 132x25 7x16 . 2 . . AT&T VDC600 = T 132x25 9x14 . 16/256K . B800 Trident TVGA 8800/8900 = T 132x25 8x16 . 4 . A000 NCR 77C22 [9] = G 96x48 8x16 768x1024 16 . A000 Oak OTI-067/077 chips [8] 58h = T 80x33 8x14 . 16 . B800 ATI EGA Wonder,ATI VIP = T 80x32 9x16 . 16 . . Genoa 6400 = T 80x43 8x8 . . . . NEL Electronics BIOS = T 132x30 9x16 . 16/256K . B800 Trident TVGA 8800/8900 = G 100x75 8x8 800x600 16/256K . A000 Paradise VGA = G 100x75 8x8 800x600 16 . . AT&T VDC600 = G 100x75 8x8 800x600 16 . A000 NCR 77C22 [9] = G 100x75 8x8 800x600 16 . . Diamond Speedstar 24X = G 100x75 8x8 800x600 16/256K . A000 Paradise VGA, WD90C = G . . 800x600 16 . . AST VGA Plus, Compaq VGA = G . . 800x600 16 . . Dell VGA = G . . 800x600 16 . . Hewlett-Packard D1180A = G . . 800x600 ??? . . ELT VGA PLUS 16 = G 100x37 8x16 800x600 16/256K . A000 Cirrus CL-GD5420/5422/5426 = G 160x64 8x16 1280x1024 16 . A000 Oak OTI-077 chipset [8] 59h = T 80x43 9x8 . . . . NEL Electronics BIOS = T 80x66 8x8 . 16/256K . A000 ATI VIP = T 132x43 9x11 . 16/256K . B800 Trident TVGA 8800/8900 = G 100x75 8x8 800x600 2 . A000 Paradise VGA = G 100x75 8x8 800x600 2 . . AT&T VDC600 = G . . 800x600 2 . . AST VGA Plus, Compaq VGA = G . . 800x600 2 . . Dell VGA = G . . 800x600 2 . . Hewlett-Packard D1180A = G 100x75 8x8 800x600 2 . A000 NCR 77C22 [9] = G 128x48 8x16 1024x768 256 . A000 Oak OTI-077 chipset [8] 5Ah = T 80x60 8x8 . . . . NEL Electronics BIOS = T 132x60 9x8 . 16/256K . B800 Trident TVGA 8800/8900 = G 128x48 8x16 1024x768 2 . A000 NCR 77C22 [9] 5Bh = T 80x30 8x16 . . . B800 ATI VGA Wonder (undoc) = G . . 640x350 256 . . Genoa 6400 = G 80x25 8x16 640x400 32K . A000 Oak OTI-067/077 chips [8] = G . . 800x600 16 . . Maxxon, SEFCO TVGA, Imtec = G 100x75 8x8 800x600 16/256K . A000 Trident TVGA 8800, 8900 = G . . 800x600 ??? . . Vobis MVGA = G 100x37 8x16 800x600 . . . NEL Electronics BIOS = G 128x48 8x16 1024x768 16 . A000 NCR 77C22 [1,9] 5Ch = T 100x37 8x16 . . . . NEL Electronics BIOS = G . . 640x400 256 . . Logix, ATI Prism Elite = G . . 640x400 256 . . Maxxon, SEFCO TVGA, Imtec = G 80x25 8x16 640x400 256/256K . A000 Zymos Poach, Hi Res 512 = G 80x25 8x16 640x400 256/256K . A000 Trident TVGA 8800/8900 = G 80x30 8x16 640x480 256 . . Genoa 6400 = G 80x30 8x16 640x480 32K . A000 Oak OTI-077 chipset [8] = G 100x75 8x8 800x600 256 . A000 NCR 77C22 [9] = G 100x75 8x8 800x600 256/256K . A000 WD90C = G 100x75 8x8 800x600 256/256K . A000 Diamond Speedstar 24X = G 100x37 8x16 800x600 256/256K . A000 Cirrus CL-GD5420/5422/5426 5Dh = T 100x75 8x8 . . . . NEL Electronics BIOS = G 80x25 8x14 640x350 64K . . STB Lightspeed ET4000/W32P = G . . 640x480 256 . . Logix, ATI Prism Elite = G . . 640x480 256 . . Maxxon, SEFCO TVGA, Imtec = G 80x30 8x16 640x480 256/256K . A000 Zymos Poach, Hi Res 512 = G 80x30 8x16 640x480 256/256K . A000 Trident TVGA 8800 (512K) = G 128x48 8x16 1024x768 16 . A000 NCR 77C22 [9] = G 128x48 8x16 1024x768 16/256K . A000 WD90C = G 128x48 8x16 1024x768 16 . . Diamond Speedstar 24X = G 128x48 8x16 1024x768 16/256K . A000 Cirrus CL-GD5420/5422/5426 5Eh = G . . 640x400 256 . . Paradise VGA,VEGA VGA = G . . 640x400 256 . . AST VGA Plus, NCR 77C22 = G . . 640x400 256 . . Compaq VGA, Dell VGA = G 80x25 8x16 640x400 256 . . AT&T VDC600 = G 80x25 8x16 640x400 256 . A000 NCR 77C22 [9] = G 80x25 8x16 640x400 256/256K . A000 WD90C = G 80x25 8x16 640x400 256/256K . A000 Diamond Speedstar 24X = G . . 800x600 16 . . Logix, ATI Prism Elite = G 100x37 8x16 800x600 16 . . NEL Electronics BIOS = G 100x75 8x8 800x600 256 . . Genoa 6400 = G 100x75 8x8 800x600 256/256K . A000 Zymos Poach, Trident 8900 = G 100x75 8x8 800x600 256/256K . A000 Hi Res 512 5Fh = G 80x25 8x16 640x400 64K . . STB Lightspeed ET4000/W32P = G . . 640x480 256 . . Paradise VGA = G . . 640x480 256 . . AST VGA Plus, NCR 77C22 = G . . 640x480 256 . . Compaq VGA, Dell VGA = G . . 640x480 256 . . Hewlett-Packard D1180A = G 80x30 8x16 640x480 256 . . AT&T VDC600 (512K) = G 80x30 8x16 640x480 256 . A000 NCR 77C22 [9] = G 80x30 8x16 640x480 256/256K . A000 WD90C = G 80x30 8x16 640x480 256/256K . A000 Diamond Speedstar 24X = G 80x30 8x16 640x480 256/256K . A000 Cirrus CL-GD5420/5422/5426 = G . . 1024x768 16 . . Logix, ATI Prism Elite = G . . 1024x768 16 . . Maxxon, Imtec = G 128x48 8x16 1024x768 16 . . Genoa 6400 = G 128x48 8x16 1024x768 16/256K . A000 Zymos Poach, Hi Res 512 = G 128x48 8x16 1024x768 16/256K . A000 Trident TVGA 88/8900 512K 60h = T 132x25 8x14 . 16/64 8 B800 Quadram Ultra VGA = T 132x25 8x14 . 16 . . Genoa 6400 = T 132x25 8x14 . 16 . . Genoa SuperEGA BIOS 3.0+ = T 132x25 . . . . . Cirrus 5320 chipset = T 132x25 . . 16 . . Chips&Technologies chipset = G 80x??? . ???x400 . . . Corona/Cordata BIOS 4.10+ = G 80x25 8x16 640x400 256 1 A000 Ahead A, Ahead B = G . . 752x410 . . . VEGA VGA = G . . 752x410 16 . . Tatung VGA = G . . 752x410 16 . . Video7 V-RAM VGA = G 128x48 8x16 1024x768 4/256K . A000 Trident TVGA 8900 = G 128x48 8x16 1024x768 256/256K . A000 WD90C = G 128x48 8x16 1024x768 256/256K . A000 Diamond Speedstar 24X = G 128x48 8x16 1024x768 256/256K . A000 Cirrus CL-GD5420/5422/5426 61h = T 132x29 8x12 . 16/64 8 B800 Quadram Ultra VGA = T 132x29 8x8 . 16 . . Genoa 6400 = T 132x29 8x8 . 16 . . Genoa SuperEGA BIOS 3.0+ = T 132x50 . . . . . Cirrus 5320 chipset = T 132x50 . . 16 . . Chips&Technologies chipset = G . . ???x400 . . . Corona/Cordata BIOS 4.10+ = G 80x25 8x16 640x400 256 . A000 ATI VGA Wonder,VGA Wonder+ = G 80x25 8x16 640x400 256 . A000 ATI Ultra 8514A,ATI XL = G 80x30 8x16 640x480 256 1 A000 Ahead A, Ahead B (512K) = G . . 720x540 . . . VEGA VGA = G . . 720x540 16 . . Tatung VGA = G . . 720x540 16 . . Video7 V-RAM VGA = G 96x64 8x16 768x1024 16/256K . A000 Trident TVGA 88/8900 512K = G 128x48 8x16 1024x768 256 . A000 NCR 77C22 [1,9] 62h = T 132x32 8x11 . 16/64 6 B800 Quadram Ultra VGA = T 132x32 8x12 . 16 . . Genoa 6400 = T 132x32 8x11 . 16 . . Genoa SuperEGA BIOS 3.0+ = G . . 640x450 16 . . Cirrus 510/520 chipset = G 80x30 8x16 640x480 256 . A000 ATI VGA Wonder,VGA Wonder+ = G 80x30 8x16 640x480 256 . A000 ATI Ultra 8514A,ATI XL = G 80x30 8x16 640x480 32K . A000 WD90C = G 80x30 8x16 640x480 32K . A000 Diamond Speedstar 24X = G . . 800x600 . . . VEGA VGA = G . . 800x600 16 . . Tatung VGA = G . . 800x600 16 . . Video7 V-RAM VGA = G 100x75 8x8 800x600 256 1 A000 Ahead A, Ahead B (512K) = G 128x48 8x16 1024x768 256/256K . A000 Trident TVGA 8900, Zymos = G 128x48 8x16 1024x768 256 . A000 NCR 77C22 [9] 63h = T 132x44 8x8 . 16/64 5 B800 Quadram Ultra VGA = T 132x44 8x8 . 16 . . Genoa 6400 = T 132x44 8x8 . 16 . . Genoa SuperEGA BIOS 3.0+ = G . . 720x540 16 . . MORSE VGA = G . . 720x540 16 . . Cirrus 510/520 chipset = G 100x42 8x14 800x600 256 . A000 ATI VGA Wonder,VGA Wonder+ = G 100x42 8x14 800x600 256 . A000 ATI Ultra 8514A,ATI XL = G . . 800x600 32K . A000 WD90C = G . . 800x600 32K . A000 Diamond Speedstar 24X = G 128x48 7x16 1024x768 256 1 A000 Ahead B (1MB) = G . . 1024x768 2 . . Video7 V-RAM VGA 64h = T 132x60 8x8 . 16 . . Genoa 6400 = G . . 640x480 64K . A000 Cirrus CL-GD 5422/5426 = G . . 800x600 16 . . MORSE VGA = G . . 800x600 16 . . Cirrus 510/520 chipset = G . . 800x600 ??? . . SAMPO-Mira VGA = G . . 1024x768 4 . . Video7 V-RAM VGA = G 128x48 8x16 1024x768 256 . A000 ATI VGA Wonder Plus,ATI XL = G 160x64 8x16 1280x1024 16/256K . A000 WD90C [1] = G 160x64 8x16 1280x1024 16/256K . A000 Diamond Speedstar 24X [1] 65h = G . . 800x600 64K . A000 Cirrus CL-GD 5422/5426 = G . . 1024x768 16 . . Video7 V-RAM VGA = G 128x48 8x16 1024x768 16 . A000 ATI VGA Wonder 66h = T 80x50 8x8 640x400 16/256K . B800 WD90C = T 80x50 8x8 . 16 . B800 Diamond Speedstar 24X = G . . 640x400 256 . . Tatung VGA = G . . 640x400 256 . . Video7 V-RAM VGA = G . . 640x480 32K . A000 Cirrus CL-GD 5422/5426 67h = T 80x43 8x8 640x344 16/256K . B800 WD90C = T 80x43 8x8 . 16 . B800 Diamond Speedstar 24X = G . . 640x480 256 . . Video7 V-RAM VGA = G . . 800x600 32K . A000 Cirrus CL-GD 5422/5426 = G 128x48 8x16 1024x768 4 . A000 ATI VGA Wonder = G 160x64 8x16 1280x1024 16 . A000 NCR 77C22 [1,9] 69h = T 132x50 8x8 1056x400 16/256K . B800 WD90C = T 132x50 8x8 . 16 . B800 Diamond Speedstar 24X = G . . 720x540 256 . . Video7 V-RAM VGA 6Ah = G . . 800x600 16 . A000 VESA standard interface = G 100x75 8x8 800x600 16 . . Genoa 6400 = G 100x75 8x8 800x600 16 . . Diamond Speedstar 24X = G . . 800x600 16 . A000 Ahead A = G 100x75 8x8 800x600 16 1 A000 Ahead B (VESA) (see 71h) = G . . 800x600 16 . . Zymos Poach, Hi Res 512 = G . . 800x600 16 . . Epson LT-386SX in CRT Mode = G . . 800x600 16 . . Compuadd 316SL in CRT Mode = G 100x37 8x16 800x600 16/256K . A000 Cirrus CL-GD5420/5422/5426 = G 100x42 8x14 800x600 . . A000 ATI VGA Wonder (undoc) = G . . 800x600 16 . . Chips&Technologies chipset = G 160x64 8x16 1280x1024 256 . A000 NCR 77C22 [1,9] 6Bh = T 100x37 8x16 . 16 . . Genoa 6400 = T 100x37 8x16 . . . . NEL Electronics BIOS 6Ch = G 80x30 8x16 640x480 16M . A000 Trident 8900CL/BIOS C04 = G 100x75 8x8 800x600 256 . . Genoa 6400 = G 160x60 8x16 1280x960 16/256K . A000 WD90C [1] = G 160x60 8x16 1280x960 16/256K . A000 Diamond Speedstar 24X [1] = G 160x64 8x16 1280x1024 16/256K . A000 Cirrus CL-GD 5422/5426 [1] 6Dh = G 80x25 8x14 640x350 64K . . STB Lightspeed ET4000/W32P = G 160x64 8x16 1280x1024 256/256K . A000 Cirrus CL-GD 5422/5426 [1] 6Eh = G 40x25 8x8 320x200 64K . A000 Cirrus CL-GD 5422/5426 6Fh = G 40x25 8x8 320x200 16M . A000 Cirrus CL-GD 5422/5426 70h = extended mode set (see AX=0070h) . Everex Micro Enhancer EGA = T 40x25 8x8 . 16 8 B800 Quadram (CGA double scan) = T 40x25 8x8 (CGA dblscan) . . Genoa SuperEGA BIOS 3.0+ = G . . 360x480 256 . . Cirrus 510/520/5320 chips = G 90x28 8x14 720x392 16 1 A000 Ahead B = G . . 800x600 16 . . C&T chipset, Cardinal = G . . 1024x480 256 . . Trident 8900C BIOS C3.0 71h = T 80x25 8x8 . 16 8 B800 Quadram (CGA double scan) = T 80x25 8x8 (CGA dblscan) . . Genoa SuperEGA BIOS 3.0+ = G . . 528x400 256 . . Cirrus 510/520 chipset = G 80x30 8x16 640x480 16M . A000 Cirrus CL-GD 5422/5426 = G 100x35 8x16 800x600 16/64 . A000 NSI Smart EGA+ = G 100x75 8x8 800x600 16 1 A000 Ahead B (same as 6Ah) = G . . 960x720 16 . . C&T chipset, Cardinal = G . . 1024x480 256 . . Trident 8900C BIOS C3.0 72h = T 80x60 8x8 . 16 . B800 Quadram Ultra VGA = T 80x60 8x8 . 16 . B800 Genoa 6400 = T 80x60 8x8 . 16 . B800 Genoa SuperEGA BIOS 3.0+ = G . . 528x480 256 . . Cirrus 510/520 chipset = G 80x25 8x19 640x480 16 1 A000 DOS/V w/ any VGA = G . . 640x480 32K . A000 ATI = G . . 640x480 16M . A000 WD90C = G . . 640x480 16M . A000 Diamond Speedstar 24X = G . . 1024x768 16 . . C&T chipset, Cardinal 73h = G 80x60 8x8 640x480 16 . A000 Quadram Ultra VGA = G 80x60 8x8 640x480 16 . . Genoa 6400 = G 80x60 8x8 640x480 16 . . Genoa SuperEGA BIOS 3.0+ = T 80x25 8x19 640x475 16 1 none DOS/V, emulated in VGA graph 74h = T 80x66 8x8 . 16 . B800 Quadram Ultra VGA = T 80x66 8x8 . 16 . B800 Genoa 6400 = T 80x66 8x8 . 16 . B800 Genoa SuperEGA BIOS 3.0+ = G . . 640x400 2 . B800 Toshiba 3100 AT&T mode = G 80x30 8x16 640x480 32K . A000 Trident 8900C/BIOS C03 = G 128x48 8x16 1024x768 16 1 A000 Ahead A, Ahead B (512K) = G . . 1024x768 64K . A000 Cirrus CL-GD 5422/5426 [1] 75h = G 80x30 8x16 640x480 64K . A000 Trident 8900C/BIOS C03 = G 80x66 . 640x528 16??? . A000 Quadram Ultra VGA = G 80x66 . 640x528 16 . . Genoa SuperEGA BIOS 3.0+ = G 128x48 8x16 1024x768 4 1 A000 Ahead B 76h = T 94x29 8x14 . 16 . B800 Quadram Ultra VGA = T 94x29 8x14 . . . . Genoa SuperEGA BIOS 3.0+ = G 100x75 8x8 800x600 32K . A000 Trident 8900C/BIOS C03 = G 128x48 8x16 1024x768 2 1 A000 Ahead B 77h = G 94x29 . 752x410 16??? . A000 Quadram Ultra VGA = G 94x29 . 752x410 16 . . Genoa SuperEGA BIOS 3.0+ = G 100x75 8x8 800x600 64K . A000 Trident 8900C/BIOS C03 78h = T 100x37 8x16 . 16 . . Genoa 6400 = T 100x75 8x8 . 16 . B800 Quadram Ultra VGA = T 100x75 8x8 . . . . Genoa SuperEGA BIOS 3.0+ = G . . 640x400 256 . . STB VGA/EM-16 Plus = G . . 640x400 256 . . Cardinal, C&T chipset = G . . 640x400 256 . . Cirrus 5320 chipset 79h = G . . 640x480 256 . . Cardinal, C&T chipset = G 100x75 . 800x600 16??? . A000 Quadram Ultra VGA = G 100x75 8x8 800x600 16 . . Genoa SuperEGA BIOS 3.0+ = G 100x75 8x8 800x600 16 . . Genoa 6400 7Ah = T 114x60 8x8 . 16 . B800 Quadram Ultra VGA = T 114x60 8x8 . . . . Genoa SuperEGA BIOS 3.0+ = G . . 720x540 256 . . C&T chipset, Cardinal 7Bh = G . . 800x600 256 . . C&T chipset, Cardinal = G 114x60 . 912x480 16??? . A000 Quadram Ultra VGA = G . . 912x480 16 . . Genoa SuperEGA BIOS 3.0+ 7Ch = G . . 512x512 16 . . Genoa = G . . 800x600 256 . . C&T 82C453 chipset 7Dh = G 64x32 8x16 512x512 256 . . Genoa 7Eh = special mode set (see AX=007Eh) . Paradise VGA, AT&T VDC600 = G 80x25 8x16 640x400 256 . . Genoa 6400 = G . . 1024x768 256 . . C&T 82C453 chipset = G 90x43 . . mono . B000 HERCULES.COM on HGC [14] 7Fh = special function set (see AX=007Fh) . Paradise VGA, AT&T VDC600 = G 128x48 8x16 1024x768 4 . . Genoa 6400 = G 90x29 . . mono . B000 HERCULES.COM on HGC [14] 82h = T 80x25 . . B&W . . AT&T VDC overlay mode [6] 83h = T 80x25 . . . . . AT&T VDC overlay mode [6] 86h = G . . 640x200 B&W . . AT&T VDC overlay mode [6] 88h = G 90x43 8x8 720x348 mono . B000 Hercules + MSHERC.COM C0h = G . . 640x400 2/prog palette . AT&T VDC overlay mode [6] = G . . 640x400 2/prog palette . Olivetti Quaderno overlay C4h = disable output . . . . AT&T VDC overlay mode [6] C8h = G 80x50 8x8 640x400 2 . B800 Olivetti Quaderno overlay D0h = G . . 640x400 2 . B800 DEC VAXmate AT&T mode Notes: [1] interlaced only [2] for ATI EGA Wonder, mode 08h is only valid if SMS.COM is loaded resident. SMS maps mode 08h to mode 27h if the byte at location 0040:0063 is 0B4h, otherwise to mode 23h, thus selecting the appropriate (monochrome or color) 132x25 character mode. for ATI VGA Wonder, mode 08h is the same, and only valid if VCONFIG loaded resident [3] early XGA boards support 132-column text but do not have this BIOS mode [4] DESQview intercepts calls to change into these two modes (21h is page 0, 22h is page 1) even if there is no Hercules graphics board installed [5] ATI BIOS v4-1.00 has a text-scrolling bug in this mode [6] for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h, 40h, or 44h [7] BIOS text support is broken in this undocumented mode; scrolling moves only about 1/3 of the screen (and does even that portion incorrectly), while screen clears only clear about 3/4. [8] The Oak OTI-037/067/077 modes are present in the Oak VGA BIOS, which OEMs may choose to use only partially or not at all; thus, not all Oak boards support all "Oak" modes listed here [9] this card uses the full 128K A000h-BFFFh range for the video buffer, precluding the use of a monochrome adapter in the same system [10] mode 17h supported by Tseng ET4000 BIOS 8.01X dated 09/14/90, but not v8.01X dated 02/28/92; mode 21h supported by 02/28/92 version but not 09/14/90 version [11] HERKULES simulates a 90x45 text mode in Hercules graphics mode; the installation check for HERKULES.COM is the signature "Herkules" two bytes beyond the INT 10 handler [12] The Realtek RTVGA BIOS v3.C10 crashes when attempting to switch into modes 21h or 27h; this version of the BIOS also sets the BIOS data area incorrectly for extended text modes, resulting in scrolling after only 24 lines (the VMODE.EXE utility does set the data area correctly) [13] The Tandy 1000SL/TL BIOS does not actually support this mode [14] HERCULES.COM is a graphics-mode BIOS extension for Hercules-compatible graphics cards by Soft Warehouse, Inc. Its installation check is to test whether the word preceding the INT 10 handler is 4137h. [15] The Hercules-graphics video modes for HERCBIOS (shareware by Dave Tutelman) may be changed by a command-line switch; the 90x43 character-cell mode's number is always one higher than the 90x29 mode (whose default is mode 08h) Index: video modes Index: installation check;HERKULES|installation check;HERCULES.COM --------V-100070----------------------------- INT 10 - VIDEO - Everex Micro Enhancer EGA/Viewpoint VGA - EXTENDED MODE SET AX = 0070h BL = mode (see #0010) Desc: specify a proprietary display mode on the Everex Micro Enhancer or Viewpoint video adapters SeeAlso: AH=00h,AX=6F05h,AX=7000h/BX=0004h,AH=FFh"GO32" (Table 0010) Values for Everex video mode: text/ text pixel pixel colors disply scrn monitor adapter grph resol box resolution pages addr 00h = G . . 640x480 16 . . multisync EGA,VGA 01h = G . . 752x410 16 . . multisync EGA,VGA 02h = G . . 800x600 16 . . multisync EGA,VGA 03h = T 80x34 . . . . . multisync EGA,VGA 04h = T 80x60 . . . . . multisync EGA,VGA 05h = T 94x29 . . . . . multisync EGA only 06h = T 94x51 . . . . . multisync EGA only 07h = T 100x43 8x14 . 16 . . . VGA only 08h = T 100x75 8x8 . 16 . . . VGA only 09h = T 80x44 . . . . . EGA EGA only 0Ah = T 132x25 . . . . . EGA EGA,VGA 0Bh = T 132x44 . . . . . EGA EGA,VGA 0Ch = T 132x25 . . . . . CGA EGA only 0Dh = T 80x44 . . . . . mono EGA only 0Eh = T 132x25 . . . . . mono 0Fh = T 132x44 . . . . . mono 10h = reserved 11h = G . . 1280x350 4 . . . EGA only 12h = G . . 1280x600 4 . . . EGA only 13h = G . . 640x350 256 . . . EGA,EV673 14h = G . . 640x400 256 . . . 15h = G . . 512x480 256 . . . 16h = T 80x30 8x16 . 256 . . . VGA only 18h = T 100x27 8x16 . 16 . . . VGA only 20h = G . . 1024x768 16 . . . Everex 629,678 . . . . . . . Everex EV-673 21h = T 160x64 8x16 1280x1024 16 . . . 1MB VGA only 30h = G . . 640x480 256 . . . Everex 629,678 . . . . . . . Everex EV-673 31h = G . . 800x600 256 . . . Everex 629,678 . . . . . . . Everex EV-673 32h = G 128x48 8x16 1024x768 256 . . . 1MB VGA only 40h = T 132x30 8x16 . 16 . . . VGA only 50h = T 132x32 8x16 . mono . . . VGA only 62h = G 40x25 8x8 320x200 32K . . . Vwpt TC (EV629) 70h = G 64x30 8x16 512x480 32K . . . Viewpoint TC 71h = G 80x30 8x16 640x480 32K . . . Viewpoint TC 76h = G 64x30 8x16 512x480 16M . . . Viewpoint TC 77h = G 80x30 8x16 640x480 16M . . . Viewpoint TC Index: video modes;Everex --------V-10007E----------------------------- INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET SPECIAL MODE AX = 007Eh BX = horizontal dimension of the mode desired CX = vertical dimension of the mode desired (both BX/CX in pixels for graphics modes, rows for alpha modes) DX = number of colors of the mode desired (0000h for monochrome modes) Return: BH = 7Eh if successful (Paradise VGA) AL = 7Eh if successful (AT&T VDC600) Desc: specify a display mode by resolution rather than mode number SeeAlso: AH=00h,AX=0070h,AX=007Fh,AX=6F05h,AH=FFh"GO32" Index: video modes;Paradise|video modes;AT&T --------V-10007FBH00------------------------- INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET VGA OPERATION AX = 007Fh BH = 00h Return: AL = 7Fh if successful (AT&T VDC600) BH = status (Paradise/Dell) 00h invalid function 7Fh successful SeeAlso: AX=007Fh/BH=01h,AX=007Fh/BH=02h --------V-10007FBH01------------------------- INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET NON-VGA OPERATION AX = 007Fh BH = 01h Return: AL = 7Fh if successful (AT&T VDC600) BH = status (Paradise/Dell) 00h invalid function 7Fh successful Note: color modes (0,1,2,3,4,5,6) will set non-VGA CGA operation, monochrome mode 7 will set non-VGA MDA/Hercules operation SeeAlso: AX=007Fh/BH=00h,AX=007Fh/BH=02h --------V-10007FBH02------------------------- INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - QUERY MODE STATUS AX = 007Fh BH = 02h Return: AL = 7Fh if successful (AT&T VDC600) BH = status (Paradise/Dell) 00h invalid function 7Fh successful ---if successful--- BL = 00h if operating in VGA mode, 01h if non-VGA mode CH = total video RAM size in 64k byte units CL = video RAM used by the current mode Note: under Novell DOS 7 TaskMgr Multitasker, this call always returns 0K video memory in CX SeeAlso: AX=007Fh/BH=00h,AX=007Fh/BH=01h --------V-10007F----------------------------- INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - EXTENDED FUNCTIONS AX = 007Fh BH = function 03h lock current mode allows current mode (VGA or non-VGA) to survive re-boot 04h enter MDA mode 05h enter CGA mode 06h enter monochrome VGA mode (also switches to video mode 7) 07h enter color VGA mode (also switches to video mode 3) 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh WRITE PARADISE REGISTERS 0,1,2,3,4,5 (port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh) BL = value to set in the paradise register 1Ah,1Bh,1Ch,1Dh,1Eh,1Fh READ PARADISE REGISTERS 0,1,2,3,4,5 (port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh) Return: BL = value of the paradise register BH = 7Fh if successful 29h-2Fh ??? (Paradise VGA for Dell, 7/24/91) Return: AL = 7Fh if successful (AT&T VDC600) BH = status (Paradise/Dell) 00h invalid function 7Fh successful Desc: set emulation mode or access proprietary extended data registers SeeAlso: AX=007Eh,AH=FF"Oak" --------V-10007FBH60------------------------- INT 10 - Paradise VGA - ??? AX = 007Fh BH = 60h BL = ??? (00h-13h) ??? Return: BH = status (00h failed or not supported, 7Fh successful) ??? Note: this function is supported by the 5/14/93 ROM for the Dell 486D --------V-10007FBH61------------------------- INT 10 - Paradise VGA - ??? AX = 007Fh BH = 61h ES:DI -> buffer for list of ??? (see #0011) Return: BH = status (00h failed or not supported, 7Fh successful) ??? Note: this function is supported by the 5/14/93 ROM for the Dell 486D Format of Paradise VGA list entry: Offset Size Description (Table 0011) 00h BYTE ??? or 00h if end of list 01h BYTE ??? 02h WORD ??? 04h WORD ??? 06h WORD ??? --------V-10007FBXA500----------------------- INT 10 - Paradise VGA - ??? AX = 007Fh BX = A500h ??? Return: BH = status (00h failed or not supported, 7Fh successful) ??? Note: this function is supported by the 5/14/93 ROM for the Dell 486D --------V-10007FBHA5------------------------- INT 10 - Paradise VGA - ??? AX = 007Fh BH = A5h BL = ??? bits 3-0: ??? (0-4) bits 5,4: ??? ??? Return: BH = status (00h failed or not supported, 7Fh successful) ??? Note: this function is supported by the 5/14/93 ROM for the Dell 486D --------V-10007FBHA6------------------------- INT 10 - Paradise VGA - ??? AX = 007Fh BH = A6h ??? Return: BH = status (00h failed or not supported, 7Fh successful) ??? Note: this function is supported by the 5/14/93 ROM for the Dell 486D --------V-1001------------------------------- INT 10 - VIDEO - SET TEXT-MODE CURSOR SHAPE AH = 01h CH = cursor start and options (see #0012) CL = bottom scan line containing cursor (bits 0-4) Desc: specify the starting and ending scan lines to be occupied by the hardware cursor in text modes Notes: buggy on EGA systems--BIOS remaps cursor shape in 43 line modes, but returns unmapped cursor shape UltraVision scales size to the current font height by assuming 14-line monochrome and 8-line color fonts; this call is not valid if cursor emulation has been disabled applications which wish to change the cursor by programming the hardware directly on EGA or above should call INT 10/AX=1130h or read 0040h:0085h first to determine the current font height on some adapters, setting the end line greater than the number of lines in the font will result in the cursor extending to the top of the next character cell on the right BUG: AMI 386 BIOS and AST Premier 386 BIOS will lock up the system if AL is not equal to the current video mode SeeAlso: AH=03h,AX=CD05h,AH=12h/BL=34h,#2469 Bitfields for cursor start and options: Bit(s) Description (Table 0012) 7 should be zero 6,5 cursor blink (00=normal, 01=invisible, 10=erratic, 11=slow) (00=normal, other=invisible on EGA/VGA) 4-0 topmost scan line containing cursor --------V-1002------------------------------- INT 10 - VIDEO - SET CURSOR POSITION AH = 02h BH = page number 0-3 in modes 2&3 0-7 in modes 0&1 0 in graphics modes DH = row (00h is top) DL = column (00h is left) SeeAlso: AH=03h,AH=05h,INT 60/DI=030Bh,MEM 0040h:0050h --------V-1003------------------------------- INT 10 - VIDEO - GET CURSOR POSITION AND SIZE AH = 03h BH = page number 0-3 in modes 2&3 0-7 in modes 0&1 0 in graphics modes Return: AX = 0000h (Phoenix BIOS) CH = start scan line CL = end scan line DH = row (00h is top) DL = column (00h is left) Notes: a separate cursor is maintained for each of up to 8 display pages many ROM BIOSes incorrectly return the default size for a color display (start 06h, end 07h) when a monochrome display is attached SeeAlso: AH=01h,AH=02h,AH=12h/BL=34h,MEM 0040h:0050h,MEM 0040h:0060h --------V-1004------------------------------- INT 10 - VIDEO - READ LIGHT PEN POSITION (except VGA) AH = 04h Return: AH = light pen trigger flag 00h not down/triggered 01h down/triggered DH,DL = row,column of character light pen is on CH = pixel row (graphics modes 04h-06h) CX = pixel row (graphics modes with >200 rows) BX = pixel column Desc: determine the current position and status of the light pen (if present) Notes: on a CGA, returned column numbers are always multiples of 2 (320- column modes) or 4 (640-column modes) returned row numbers are only accurate to two lines --------V-1004------------------------------------ INT 10 - HUNTER 16 - GET CURSOR ADDRESS AH = 04h BH = page Return: DH = row (0..24) DL = column (0..79) CH = cursor pixel Y-address (0..199) CL = cursor pixel X-address (0..639) Notes: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk. pixel coordinates are for the lower left corner of the character cell containing the cursor SeeAlso: AH=60h"HUNTER" --------V-1005------------------------------- INT 10 - VIDEO - SELECT ACTIVE DISPLAY PAGE AH = 05h AL = new page number (00h to number of pages - 1) (see #0009) Desc: specify which of possibly multiple display pages will be visible Note: to determine whether the requested page actually exists, use AH=0Fh to query the current page after making this call SeeAlso: AH=0Fh,AH=43h,AH=45h,MEM 0040h:0062h --------V-1005------------------------------- INT 10 - VIDEO - PCjr, Tandy 1000 - MANIPULATE CRT/CPU PAGE REGISTERS AH = 05h AL = subfunction 80h read CRT and CPU page registers Return: BH = CRT page register BL = CPU page register 81h set CPU page register BL = CPU page 82h set CRT page register BH = CRT page 83h set both CPU and CRT page registers BL = CPU page BH = CRT page Notes: the CPU page determines which 16K block of the first 128K of physical memory will be mapped at B800h by the hardware the CRT page determines the start address of the memory used by the video controller --------V-1005------------------------------- INT 10 - VIDEO - Corona/Cordata BIOS v4.10+ - GRAPHICS BITMAP BUFFER AH = 05h AL = function 00h set address of graphics bitmap buffer (video modes 60h,61h) BX = segment of buffer 0Fh get address of graphics bitmap buffer (video modes 60h,61h) Return: DX = segment of graphics bitmap buffer --------V-1006------------------------------- INT 10 - VIDEO - SCROLL UP WINDOW AH = 06h AL = number of lines by which to scroll up (00h = clear entire window) BH = attribute used to write blank lines at bottom of window CH,CL = row,column of window's upper left corner DH,DL = row,column of window's lower right corner Note: affects only the currently active page (see AH=05h) BUGS: some implementations (including the original IBM PC) have a bug which destroys BP the Trident TVGA8900CL (BIOS dated 9/8/92) clears DS to 0000h when scrolling in an SVGA mode (800x600 or higher) SeeAlso: AH=07h,AH=72h,AH=73h,AX=7F07h,INT 50/AX=0014h --------V-1007------------------------------- INT 10 - VIDEO - SCROLL DOWN WINDOW AH = 07h AL = number of lines by which to scroll down (00h=clear entire window) BH = attribute used to write blank lines at top of window CH,CL = row,column of window's upper left corner DH,DL = row,column of window's lower right corner Note: affects only the currently active page (see AH=05h) BUGS: some implementations (including the original IBM PC) have a bug which destroys BP the Trident TVGA8900CL (BIOS dated 9/8/92) clears DS to 0000h when scrolling in an SVGA mode (800x600 or higher) SeeAlso: AH=06h,AH=72h,AH=73h,INT 50/AX=0014h --------V-1008------------------------------- INT 10 - VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION AH = 08h BH = page number (00h to number of pages - 1) (see #0009) Return: AH = character's attribute (text mode only) (see #0013) AL = character Notes: for monochrome displays, a foreground of 1 with background 0 is underlined the blink bit may be reprogrammed to enable intense background colors using AX=1003h or by programming the CRT controller the foreground intensity bit (3) can be programmed to switch between character sets A and B on EGA and VGA cards, thus enabling 512 simultaneous characters on screen. In this case the bit's usual function (intensity) is regularly turned off. in graphics modes, only characters drawn with white foreground pixels are matched by the pattern-comparison routine SeeAlso: AH=09h,AX=1003h,AX=1103h,AH=12h/BL=37h,AX=5001h Bitfields for character's display attribute: Bit(s) Description (Table 0013) 7 foreground blink or (alternate) background bright (see also AX=1003h) 6-4 background color (see #0014) 3 foreground bright or (alternate) alternate character set (see AX=1103h) 2-0 foreground color (see #0014) SeeAlso: #0025 (Table 0014) Values for character color: Normal Bright 000b black dark gray 001b blue light blue 010b green light green 011b cyan light cyan 100b red light red 101b magenta light magenta 110b brown yellow 111b light gray white --------V-1009------------------------------- INT 10 - VIDEO - WRITE CHARACTER AND ATTRIBUTE AT CURSOR POSITION AH = 09h AL = character to display BH = page number (00h to number of pages - 1) (see #0009) background color in 256-color graphics modes (ET4000) BL = attribute (text mode) or color (graphics mode) if bit 7 set in <256-color graphics mode, character is XOR'ed onto screen CX = number of times to write character Notes: all characters are displayed, including CR, LF, and BS replication count in CX may produce an unpredictable result in graphics modes if it is greater than the number of positions remaining in the current row SeeAlso: AH=08h,AH=0Ah,AH=4Bh"GRAFIX",INT 17/AH=60h,INT 1F,INT 43,INT 44 --------V-100A------------------------------- INT 10 - VIDEO - WRITE CHARACTER ONLY AT CURSOR POSITION AH = 0Ah AL = character to display BH = page number (00h to number of pages - 1) (see #0009) background color in 256-color graphics modes (ET4000) BL = attribute (PCjr, Tandy 1000 only) or color (graphics mode) if bit 7 set in <256-color graphics mode, character is XOR'ed onto screen CX = number of times to write character Notes: all characters are displayed, including CR, LF, and BS replication count in CX may produce an unpredictable result in graphics modes if it is greater than the number of positions remaining in the current row SeeAlso: AH=08h,AH=09h,AH=4Bh,INT 17/AH=60h,INT 1F,INT 43,INT 44 --------V-100B--BH00------------------------- INT 10 - VIDEO - SET BACKGROUND/BORDER COLOR AH = 0Bh BH = 00h BL = background/border color (border only in text modes) SeeAlso: AH=0Bh/BH=01h --------V-100B--BH01------------------------- INT 10 - VIDEO - SET PALETTE AH = 0Bh BH = 01h BL = palette ID 00h background, green, red, and brown/yellow 01h background, cyan, magenta, and white Note: this call was only valid in 320x200 graphics on the CGA, but newer cards support it in many or all graphics modes SeeAlso: AH=0Bh/BH=00h,MEM 0040h:0066h --------V-100C------------------------------- INT 10 - VIDEO - WRITE GRAPHICS PIXEL AH = 0Ch BH = page number AL = pixel color if bit 7 set, value is XOR'ed onto screen except in 256-color modes CX = column DX = row Desc: set a single pixel on the display in graphics modes Notes: valid only in graphics modes BH is ignored if the current video mode supports only one page SeeAlso: AH=0Dh,AH=46h --------V-100D------------------------------- INT 10 - VIDEO - READ GRAPHICS PIXEL AH = 0Dh BH = page number CX = column DX = row Return: AL = pixel color Desc: determine the current color of the specified pixel in grahics modes Notes: valid only in graphics modes BH is ignored if the current video mode supports only one page SeeAlso: AH=0Ch,AH=47h --------V-100E------------------------------- INT 10 - VIDEO - TELETYPE OUTPUT AH = 0Eh AL = character to write BH = page number BL = foreground color (graphics modes only) Desc: display a character on the screen, advancing the cursor and scrolling the screen as necessary Notes: characters 07h (BEL), 08h (BS), 0Ah (LF), and 0Dh (CR) are interpreted and do the expected things IBM PC ROMs dated 4/24/81 and 10/19/81 require that BH be the same as the current active page SeeAlso: AH=02h,AH=0Ah --------b-100E--CXABCD----------------------- INT 10 - V20-XT-BIOS - TELETYPE OUTPUT WITH ATTRIBUTE AH = 0Eh CX = ABCDh BP = ABCDh AL = character to write BH = page number BL = foreground color (text modes as well as graphics modes) Program: V20-XT-BIOS is a ROM BIOS replacement with extensions by Peter Koehlmann / c't magazine Desc: display a character on the screen, advancing the cursor and scrolling the screen as necessary Notes: characters 07h (BEL), 08h (BS), 0Ah (LF), and 0Dh (CR) are interpreted and do the expected things SeeAlso: INT 15/AH=84h"V20-XT-BIOS" --------V-100F------------------------------- INT 10 - VIDEO - GET CURRENT VIDEO MODE AH = 0Fh Return: AH = number of character columns AL = display mode (see #0009 at AH=00h) BH = active page (see AH=05h) Notes: if mode was set with bit 7 set ("no blanking"), the returned mode will also have bit 7 set EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h (monochrome) in all extended-row text modes HP 200LX returns AL=07h (monochrome) if mode was set to AL=21h and always 80 resp. 40 columns in all text modes regardless of current zoom setting (see AH=D0h) when using a Hercules Graphics Card, additional checks are necessary: mode 05h: if WORD 0040h:0063h is 03B4h, may be in graphics page 1 (as set by DOSSHELL and other Microsoft software) mode 06h: if WORD 0040h:0063h is 03B4h, may be in graphics page 0 (as set by DOSSHELL and other Microsoft software) mode 07h: if BYTE 0040h:0065h bit 1 is set, Hercules card is in graphics mode, with bit 7 indicating the page (mode set by Hercules driver for Borland Turbo C) SeeAlso: AH=00h,AH=05h,AX=10F2h/BL=00h,AX=1130h,AX=CD04h --------V-100F56BX4756----------------------- INT 10 - VUIMAGE DISPLAY DRIVER (v2.20 and below) AX = 0F56h BX = 4756h CX = 4944h DL = function 01h installation check Return: AX = 5649h BX = 4443h CX = 5647h DH = 01h 02h get first video mode's parameters Return: AX = BIOS mode number BX = width in pixels CX = height in pixels DX = number of colors 03h get next video mode's parameters Return: as for DL=02h 04h display line??? ES:DI -> record (see #0015) ??? Return: ??? Program: VUIMAGE is a shareware GIF/TIFF image viewer by Offe Enterprises Note: the use of TSR display drivers was discontinued after v2.20 Index: installation check;VUIMAGE display driver Format of record for VUIMAGE Function 04h: Offset Size Description (Table 0015) 00h WORD row number 02h WORD starting column??? 04h WORD ending column??? ??? --------V-100F--SIF123----------------------- INT 10 - FRIEZE v7.41+ - INSTALLATION CHECK AH = 0Fh SI = F123h DI = 321Fh Return: AH = number of character columns AL = display mode (see #0009 at AH=00h) BH = active page (see AH=05h) SI = DI = F345h if installed Notes: if mode was set with bit 7 set ("no blanking"), the returned mode will also have bit 7 set EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h (monochrome) in all extended-row text modes SeeAlso: AH=0Fh"VIDEO",AH=4Bh"FRIEZE" --------V-1010------------------------------- INT 10 - BIOS Window Extension v1.1 - SET WINDOW COORDINATES AH = 10h CH,CL = row,column of upper left corner of window DH,DL = row,column of lower right corner of window Return: AL = status 00h successful 01h failed AH destroyed Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal Note: when a window has been set, all output via AH=0Eh is restricted to the specified window SeeAlso: AH=11h"Window",AH=12h"Window" --------V-1010------------------------------- INT 10 - VIDEO - Eagle PC2 BIOS Rev. C - SET SCROLL SPEED AH = 10h AL = speed 00h fast 01h slow (scrolling only moves characters during vertical retrace) Return: AH = previous speed --------V-101000----------------------------- INT 10 - VIDEO - SET SINGLE PALETTE REGISTER (PCjr,Tandy,EGA,MCGA,VGA) AX = 1000h BL = palette register number (00h-0Fh) = attribute register number (undocumented) (see #0016) BH = color or attribute register value Notes: on MCGA, only BX = 0712h is supported under UltraVision, the palette locking status (see AX=CD01h) determines the outcome SeeAlso: AX=1002h,AX=1007h,AX=CD01h (Table 0016) Values for attribute register number: 10h attribute mode control register (should let BIOS control this) 11h overscan color register (see also AX=1001h) 12h color plane enable register (bits 3-0 enable corresponding text attribute bit) 13h horizontal PEL panning register 14h color select register --------V-101001----------------------------- INT 10 - VIDEO - SET BORDER (OVERSCAN) COLOR (PCjr,Tandy,EGA,VGA) AX = 1001h BH = border color (00h-3Fh) BUG: the original IBM VGA BIOS incorrectly updates the parameter save area and places the border color at offset 11h of the palette table rather than offset 10h Note: under UltraVision, the palette locking status (see AX=CD01h) determines the outcome SeeAlso: AX=1002h,AX=1008h,AX=CD01h --------V-101002----------------------------- INT 10 - VIDEO - SET ALL PALETTE REGISTERS (PCjr,Tandy,EGA,VGA) AX = 1002h ES:DX -> palette register list (see #0017) BH = 00h to avoid problems on some adapters Note: under UltraVision, the palette locking status (see AX=CD01h) determines the outcome SeeAlso: AX=1000h,AX=1001h,AX=1009h,AX=CD01h Format of palette register list: Offset Size Description (Table 0017) 00h 16 BYTEs colors for palette registers 00h through 0Fh 10h BYTE border color --------V-101003----------------------------- INT 10 - VIDEO - TOGGLE INTENSITY/BLINKING BIT (Jr, PS, TANDY 1000, EGA, VGA) AX = 1003h BL = new state 00h background intensity enabled 01h blink enabled BH = 00h to avoid problems on some adapters Notes: although there is no function to get the current status on adapters prior to the VGA, bit 5 of 0040h:0065h indicates the state; on the VGA, use AH=1Bh and check offset 2Dh of the returned data (see #0037) when configured for a monochrome display, the Boca Research Multi-EGA with ROM v M1.1 Type D has its screen disrupted if BH is not clear this call is reported to be "Get Cursor Position" on the Tandy 1000SL/TL SeeAlso: AH=08h,AH=1Bh --------V-101007----------------------------- INT 10 - VIDEO - GET INDIVIDUAL PALETTE REGISTER (VGA,UltraVision v2+) AX = 1007h BL = palette or attribute (undoc) register number (see #0016) Return: BH = palette or attribute register value Note: UltraVision v2+ supports this function even on color EGA systems in video modes 00h-03h, 10h, and 12h; direct programming of the palette registers will cause incorrect results because the EGA registers are write-only. To guard against older versions or unsupported video modes, programs which expect to use this function on EGA systems should set BH to FFh on entry. SeeAlso: AX=1000h,AX=1009h --------V-101008----------------------------- INT 10 - VIDEO - READ OVERSCAN (BORDER COLOR) REGISTER (VGA,UltraVision v2+) AX = 1008h Return: BH = border color (00h-3Fh) Note: (see AX=1007h) SeeAlso: AX=1001h --------V-101009----------------------------- INT 10 - VIDEO - READ ALL PALETTE REGISTERS AND OVERSCAN REGISTER (VGA) AX = 1009h ES:DX -> 17-byte buffer for palette register list (see #0017) Note: UltraVision v2+ supports this function even on color EGA systems in video modes 00h-03h, 10h, and 12h; direct programming of the palette registers will cause incorrect results because the EGA registers are write-only. To guard against older versions or unsupported video modes, programs which expect to use this function on EGA systems should set the ES:DX buffer to FFh before calling. SeeAlso: AX=1002h,AX=1007h,AX=CD02h --------V-101010----------------------------- INT 10 - VIDEO - SET INDIVIDUAL DAC REGISTER (VGA/MCGA) AX = 1010h BX = register number CH = new value for green (0-63) CL = new value for blue (0-63) DH = new value for red (0-63) SeeAlso: AX=1012h,AX=1015h --------V-101012----------------------------- INT 10 - VIDEO - SET BLOCK OF DAC REGISTERS (VGA/MCGA) AX = 1012h BX = starting color register CX = number of registers to set ES:DX -> table of 3*CX bytes where each 3 byte group represents one byte each of red, green and blue (0-63) SeeAlso: AX=1010h,AX=1017h,INT 62/AX=00A5h --------V-101013----------------------------- INT 10 - VIDEO - SELECT VIDEO DAC COLOR PAGE (VGA) AX = 1013h BL = subfunction 00h select paging mode BH = 00h select 4 blocks of 64 BH = 01h select 16 blocks of 16 01h select page BH = page number (00h to 03h) or (00h to 0Fh) Note: this function is not valid in mode 13h SeeAlso: AX=101Ah --------V-101015----------------------------- INT 10 - VIDEO - READ INDIVIDUAL DAC REGISTER (VGA/MCGA) AX = 1015h BL = palette register number Return: DH = red value CH = green value CL = blue value AX destroyed by some BIOSes (e.g. Tseng ET4000 BIOS v8.00n always returns AX=00C9h) SeeAlso: AX=1010h,AX=1017h --------V-101017----------------------------- INT 10 - VIDEO - READ BLOCK OF DAC REGISTERS (VGA/MCGA) AX = 1017h BX = starting palette register CX = number of palette registers to read ES:DX -> buffer (3 * CX bytes in size) (see also AX=1012h) Return: buffer filled with CX red, green and blue triples SeeAlso: AX=1012h,AX=1015h,INT 62/AX=00A4h --------V-101018----------------------------- INT 10 U - VIDEO - SET PEL MASK (VGA/MCGA) AX = 1018h BL = new PEL value SeeAlso: AX=1019h --------V-101019----------------------------- INT 10 U - VIDEO - READ PEL MASK (VGA/MCGA) AX = 1019h Return: BL = value read SeeAlso: AX=1018h --------V-10101A----------------------------- INT 10 - VIDEO - GET VIDEO DAC COLOR-PAGE STATE (VGA) AX = 101Ah Return: BL = paging mode 00h four pages of 64 01h sixteen pages of 16 BH = current page SeeAlso: AX=1013h --------V-10101B----------------------------- INT 10 - VIDEO - PERFORM GRAY-SCALE SUMMING (VGA/MCGA) AX = 101Bh BX = starting palette register CX = number of registers to convert Desc: convert the RGB values of one or more palette registers such that the resulting values are grays with the same intensities as the original colors SeeAlso: AH=12h/BL=33h --------V-1010E0----------------------------- INT 10 - VIDEO - Diamond Speedstar 24 - SET 24-BIT GRAPHICS MODE AX = 10E0h BL = video mode (see also #0009 at AH=00h) 2Eh = 640x480 Return: ??? SeeAlso: AH=00h,AX=10F0h --------V-1010F0----------------------------- INT 10 - VIDEO - Tseng ET-4000 BIOS - SET HiColor GRAPHICS MODE AX = 10F0h BL = video mode (see also #0009 at AH=00h) 13h = 320x200x32K 2Dh = 640x350x32K 2Eh = 640x480x32K 2Fh = 640x400x32K 30h = 800x600x32K 3Eh = 640x480x16M (Genoa 7900) FFh Tseng 24-bit color mode BH = mode 2Dh = 640x480 2Eh = 640x480x16M 2Fh = 640x400 30h = 800x600 38h = 1024x768??? (Tseng ET4000/W32i) Return: AL = 10h if supported AH = status 00h if successful other on error Desc: switch the display into a graphics mode with 15 or more bits per pixel Note: the Tseng HiColor BIOS extensions are supported by: Diamond Computer Systems SpeedStar HiColor VGA Everex Systems HC VGA Focus Information Systems 2theMax 4000 Cardinal Technologies VGA732 Orchid ProDesigner IIs Genoa 7900 SeeAlso: AH=00h,AX=10E0h,AX=10F1h,AX=10F2h Index: video modes;Tseng Hi-Color --------V-1010F1----------------------------- INT 10 - VIDEO - Tseng ET-4000 BIOS - GET DAC TYPE AX = 10F1h Return: AL = 10h if supported BL = type of digital/analog converter (see #0018) Desc: determine which type of digital-to-analog converter is installed on the display board SeeAlso: AX=10F0h,AX=10F2h (Table 0018) Values for type of DAC: 00h normal VGA DAC 01h Sierra SC1148x HiColor DAC ---Diamond SpeedStar 24--- 02h new Sierra SS24 DAC (24-bit) ---generic Tseng BIOS v8+ --- 02h Sierra Mark2 (15-bit) or Mark3 (15/16-bit) DAC 03h ATT20c490/1/2 (15/16/24-bit) 04h AcuMos ADAC1 (15/16/24-bit) 05h unknown 15/16/24-bit DAC 06h Cirrus Internal 15/16/24-bit (CL-GD54xx series adapters) 07h Diamond SS2410 (15/24-bit) 08h unknown 15/16/24-bit DAC 09h unknown 15/16/24-bit DAC else other HiColor DAC --------V-1010F2----------------------------- INT 10 u - VIDEO - Tseng ET-4000 BIOS - CHECK IF HiColor MODE/SET HiColor MODE AX = 10F2h BL = function 00h get current HiColor mode 01h set 15-bit HiColor mode 02h set 16-bit HiColor mode Return: AX = 0010h if supported BL = video mode type 00h not in HiColor mode 01h 15-bit RGB mode 02h 16-bit RGB mode 03h 24-bit RGB mode Desc: determine whether the display is in a graphics mode with 15 or more bits per pixel color resolution Note: set (BL=01h/02h) only works if already in a HiColor mode SeeAlso: AH=0Fh,AX=10F0h,AX=10F1h --------V-1011------------------------------- INT 10 - BIOS Window Extension v1.1 - GET WINDOW COORDINATES AH = 11h Return: CH,CL = row,column of upper left corner DH,DL = row,column of lower right corner Desc: determine the portion of the display to which output is restricted Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal SeeAlso: AH=10h"Window",AH=12h"Window" --------V-1011------------------------------- INT 10 - VIDEO - TEXT-MODE CHARACTER GENERATOR FUNCTIONS (PS, EGA, VGA) AH = 11h The following functions will cause a mode set, completely resetting the video environment, but without clearing the video buffer AL = 00h, 10h: load user-specified patterns ES:BP -> user table CX = count of patterns to store DX = character offset into map 2 block BL = block to load in map 2 BH = number of bytes per character pattern AL = 01h, 11h: load ROM monochrome patterns (8 by 14) BL = block to load AL = 02h, 12h: load ROM 8 by 8 double-dot patterns BL = block to load AL = 03h: set block specifier (allows dual character sets on screen) BL = block specifier (see #0019) AL = 04h, 14h: load ROM 8x16 character set (VGA) BL = block to load Notes: The routines called with AL=1xh are designed to be called only immediately after a mode set and are similar to the routines called with AL=0xh, except that: Page 0 must be active. Bytes/character is recalculated. Max character rows is recalculated. CRT buffer length is recalculated. CRTC registers are reprogrammed as follows: R09 = bytes/char-1 ; max scan line (mode 7 only) R0A = bytes/char-2 ; cursor start R0B = 0 ; cursor end R12 = ((rows+1)*(bytes/char))-1 ; vertical display end R14 = bytes/char ; underline loc (*** BUG: should be 1 less ***) the current block specifiers may be determined with INT 10/AH=1Bh, looking at offsets 2Bh and 2Ch of the returned data (VGA only) (see AH=1Bh,#0037) SeeAlso: AH=1Bh,AX=CD10h Bitfields for block specifier: Bit(s) Description (Table 0019) ---EGA/MCGA--- 0,1 block selected by characters with attribute bit 3 clear 2,3 block selected by characters with attribute bit 3 set ---VGA--- 0,1,4 block selected by characters with attribute bit 3 clear 2,3,5 block selected by characters with attribute bit 3 set --------V-1011------------------------------- INT 10 - VIDEO - Realtek RTVGA - TEXT-MODE CHARACTER GENERATOR FUNCTIONS AH = 11h AL = 07h load user-specified paterns and recalculate mode parms parameters are the same as for AL = 10h AL = 08h load monochrome patterns (8x14) and recalculate mode parms parameters are the same as for AL = 11h AL = 09h load ROM 8 by 8 double-dot patterns and recalculate mode parms parameters are the same as for AL = 12h AL = 0Bh load ROM 8x16 character set (VGA) and recalculate mode parms parameters are the same as for AL = 14h Note: these functions should only be called under the same conditions as AL=1xh (see entry above) SeeAlso: AH=11h --------V-10110F----------------------------- INT 10 - VIDEO - Realtek RTVGA - SET USER 8x8 GRAPHICS CHARACTERS AX = 110Fh ES:BP -> user table for INT 1F Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=1110h,AX=1111h,AX=1112h,AX=1120h --------V-101110----------------------------- INT 10 - VIDEO - Realtek RTVGA - SET USER GRAPHICS CHARACTERS AX = 1110h ES:BP -> user table CX = bytes per character BL = row specifier 00h user set DL = number of rows 01h 14 rows 02h 25 rows 03h 43 rows Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=110Fh,AX=1112h,AX=1121h --------V-101111----------------------------- INT 10 - VIDEO - Realtek RTVGA - SET ROM 8x14 GRAPHICS CHARACTERS AX = 1111h BL = row specifier (see AX=1121h) Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=110Fh,AX=1110h,AX=1122h --------V-101112----------------------------- INT 10 - VIDEO - Realtek RTVGA - SET ROM 8x8 DOUBLE-DOT CHARACTERS AX = 1112h BL = row specifier (see AX=1121h) Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=110Fh,AX=1110h,AX=1111h,AX=1123h --------V-101120----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER 8x8 GRAPHICS CHARS (PS,EGA,VGA) AX = 1120h ES:BP -> user table for INT 1F Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=1121h,AX=1122h,AX=1123h,AX=1124h,AX=1125h,INT 1F,INT 43 --------V-101121----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER GRAPHICS CHARACTERS (PS,EGA,VGA) AX = 1121h ES:BP -> user table CX = bytes per character BL = row specifier 00h user set DL = number of rows 01h 14 rows 02h 25 rows 03h 43 rows Note: this function is meant to be called immediately after a mode set; results are unpredictable at other times SeeAlso: AX=1120h,AX=1122h,AX=1123h,AX=1124h,AX=1129h,INT 1F,INT 43 --------V-101122----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET ROM 8x14 GRAPHICS CHARS (PS,EGA,VGA) AX = 1122h BL = row specifier (see AX=1121h) Notes: this function is meant to be called immediately after a mode set; results are unpredictable at other times UltraVision v2+ sets INT 43 to the appropriate font on this call SeeAlso: AX=1111h,AX=1120h,AX=1121h,AX=1123h,AX=1124h,AX=1129h,INT 1F,INT 43 --------V-101123----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET ROM 8x8 DOUBLE-DOT CHARS (PS,EGA,VGA) AX = 1123h BL = row specifier (see AX=1121h) Notes: this function is meant to be called immediately after a mode set; results are unpredictable at other times UltraVision v2+ sets INT 43 to the appropriate font on this call SeeAlso: AX=1112h,AX=1120h,AX=1121h,AX=1122h,AX=1124h,AX=1129h,INT 1F,INT 43 --------V-101124----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - LOAD 8x16 GRAPHICS CHARS (VGA,MCGA) AX = 1124h BL = row specifier (see AX=1121h) Notes: this function is meant to be called immediately after a mode set; results are unpredictable at other times UltraVision v2+ sets INT 43 to the appropriate font on this call SeeAlso: AX=1120h,AX=1121h,AX=1122h,AX=1123h,AX=1129h,INT 1F,INT 43 --------V-101129----------------------------- INT 10 - VIDEO - GRAPH-MODE CHARGEN - LOAD 8x16 GRAPH CHARS (Compaq Systempro) AX = 1129h BL = row specifier (see AX=1121h) Notes: this function is meant to be called immediately after a mode set; results are unpredictable at other times UltraVision v2+ sets INT 43 to the appropriate font on this call SeeAlso: AX=1120h,AX=1121h,AX=1122h,AX=1123h,AX=1124h,INT 1F, INT 43 --------V-101130----------------------------- INT 10 - VIDEO - GET FONT INFORMATION (EGA, MCGA, VGA) AX = 1130h BH = pointer specifier 00h INT 1Fh pointer 01h INT 43h pointer 02h ROM 8x14 character font pointer 03h ROM 8x8 double dot font pointer 04h ROM 8x8 double dot font (high 128 characters) 05h ROM alpha alternate (9 by 14) pointer (EGA,VGA) 06h ROM 8x16 font (MCGA, VGA) 07h ROM alternate 9x16 font (VGA only) (see #0020) 11h (UltraVision v2+) 8x20 font (VGA) or 8x19 font (autosync EGA) 12h (UltraVision v2+) 8x10 font (VGA) or 8x11 font (autosync EGA) Return: ES:BP = specified pointer CX = bytes/character of on-screen font (not the requested font!) DL = highest character row on screen Note: for UltraVision v2+, the 9xN alternate fonts follow the corresponding 8xN font at ES:BP+256N BUG: the IBM EGA and some other EGA cards return in DL the number of rows on screen rather than the highest row number (which is one less). SeeAlso: AX=1100h,AX=1120h,INT 1F,INT 43 Format of alternate font table [array]: Offset Size Description (Table 0020) 00h BYTE character to be replaced (00h = end of table) 01h N BYTEs graphics data for character, one byte per scan line --------V-101130BX4D4F----------------------- INT 10 - M10_SCR.COM v3.5+ - INSTALLATION CHECK AX = 1130h BX = 4D4Fh Return: CX = 4F4Dh if installed ES:BP -> M10_SCR INT 10 handler Program: M10_SCR is a shareware extended text mode and font driver by I.V. Morozov SeeAlso: INT 16/AX=4D4Fh --------V-1012------------------------------- INT 10 - BIOS Window Extension v1.1 - GET BLANKING ATTRIBUTE AH = 12h Return: BH = attribute to use on blanked lines when scrolling Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal SeeAlso: AH=11h"Window",AH=12h"Window" --------V-1012--BL10------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, EGA, VGA, MCGA) - GET EGA INFO AH = 12h BL = 10h Return: BH = video state 00h color mode in effect (I/O port 3Dxh) 01h mono mode in effect (I/O port 3Bxh) BL = installed memory (00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K) CH = feature connector bits (see #0021) CL = switch settings (see #0022,#0023) AH destroyed (at least by Tseng ET4000 BIOS v8.00n) Note: one possible check for the presence of an EGA or later display card is to call this function with BH=FFh; if not present, BH will be unchanged on return another installation check is used by Athena Digital's HGCIBM, which sets CX to FFFFh on calling and checks whether it has been changed on return Index: installation check;EGA Bitfields for feature connector bits: Bit(s) Description (Table 0021) 0 FEAT 1 line, state 2 1 FEAT 0 line, state 2 2 FEAT 1 line, state 1 3 FEAT 0 line, state 1 4-7 unused (0) Bitfields for switch settings: Bit(s) Description (Table 0022) 0 switch 1 OFF 1 switch 2 OFF 2 switch 3 OFF 3 switch 4 OFF 4-7 unused (Table 0023) Values for switch settings on original EGA/VGA: 00h primary MDA/HGC, secondary EGA+ 40x25 01h-03h primary MDA/HGC, secondary EGA+ 80x25 04h primary CGA 40x25, secondary EGA+ 80x25 mono 05h primary CGA 80x25, secondary EGA+ 80x25 mono 06h primary EGA+ 40x25, secondary MDA/HGC (optional) 07h-09h primary EGA+ 80x25, secondary MDA/HGC (optional) 0Ah primary EGA+ 80x25 mono,secondary CGA 40x25 (optional) 0Bh primary EGA+ 80x25 mono,secondary CGA 80x25 (optional) --------V-1012--BL11------------------------- INT 10 - VIDEO - Trident TVGA 8800/8900/9000 BIOS - GET BIOS INFO AH = 12h BL = 11h Return: AL = 12h if function supported BL = ??? (10h) ES:BP -> BIOS info structure (see #0024) SeeAlso: AH=12h/BL=12h"TRIDENT" Format of Trident BIOS Info structure: Offset Size Description (Table 0024) 00h BYTE ??? (0000h) 01h BYTE OEM Code (00h for original Trident) 02h WORD ID??? (1073h for 8800BR, 1074 for 8800CS) 04h 8 BYTEs BIOS date ('mm/dd/yy') 0Ch WORD ??? 0Eh 8 BYTEs BIOS Version (' C3-128 ', ' C3-129 ') --------V-1012--BL12------------------------- INT 10 - VIDEO - Trident TVGA 8800/8900/9000 BIOS - GET VIDEO RAM SIZE AH = 12h BL = 12h Return: AL = 12h if function supported AH = number of 256K banks of RAM installed SeeAlso: AH=12h/BL=11h"TRIDENT" --------V-1012--BL20------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS,EGA,VGA,MCGA) - ALTERNATE PRTSC AH = 12h BL = 20h select alternate print screen routine Desc: installs a PrtSc routine from the video card's BIOS to replace the default PrtSc handler from the ROM BIOS, which usually does not understand screen heights other than 25 lines Note: some adapters disable print-screen instead of enhancing it SeeAlso: INT 05 --------V-1012--BL2E------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = 2Eh Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1012--BL30------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - SELECT VERTICAL RESOLUTION AH = 12h BL = 30h AL = vertical resolution 00h 200 scan lines 01h 350 scan lines 02h 400 scan lines Return: AL = 12h if function supported Desc: specify the number of scan lines used to display text modes Note: the specified resolution will take effect on the next mode set SeeAlso: AH=00h --------V-1012--BL31------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - PALETTE LOADING AH = 12h BL = 31h AL = new state 00h enable default palette loading 01h disable default palette loading Return: AL = 12h if function supported Desc: specify whether a default palette should be loaded when the display mode is set SeeAlso: AH=00h --------V-1012--BL32------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - VIDEO ADDRESSING AH = 12h BL = 32h AL = new state 00h enable video addressing 01h disable video addressing Return: AL = 12h if function supported Desc: specify whether the CPU should have access to video memory and the display adapters I/O registers --------V-1012--BL33------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - GRAY-SCALE SUMMING AH = 12h BL = 33h AL = new state 00h enable gray scale summing 01h disable gray scale summing Return: AL = 12h if function supported Desc: specify whether or not colors should be converted to gray scale when palette or color registers are loaded SeeAlso: AX=101Bh,AX=BF06h,AX=BF08h --------V-1012--BL34------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - CURSOR EMULATION AH = 12h BL = 34h AL = new state 00h enable alphanumeric cursor emulation 01h disable alphanumeric cursor emulation Return: AL = 12h if function supported Desc: specify whether the BIOS should automatically remap cursor start/end according to the current character height in text modes SeeAlso: AH=01h,AH=03h --------V-1012--BL35------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS) - DISPLAY-SWITCH INTERFACE AH = 12h BL = 35h AL = subfunction 00h initial adapter video off 01h initial planar video on 02h switch active video off 03h switch inactive video on 80h *UNDOCUMENTED* set system board video active flag ES:DX -> buffer for 128 byte save area (if AL = 00h-03h) Return: AL = 12h if function supported Desc: switch between two video adapters which may otherwise have address conflicts --------V-1012--BL36------------------------- INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, VGA) - VIDEO REFRESH CONTROL AH = 12h BL = 36h AL = new state 00h enable refresh 01h disable refresh Return: AL = 12h if function supported Desc: specify whether the contents of video memory should be displayed on the screen; disabling refresh effectively blanks the screen Note: when display refresh is disabled, the entire screen displays the color specified by the DAC color register 00h; thus to actually blank the screen, the application must first ensure that that register has been set to black BUG: GEM/VIEWMAX ET3000 and ET4000 drivers dated 6/23/88 do not correctly reenable refresh after the screen has been blanked due to inactivity, resulting in a total loss of video synchronization SeeAlso: AX=BF05h --------V-1012--BL37------------------------- INT 10 - VIDEO - XGA - MAINFRAME INTERACTIVE SUPPORT AH = 12h BL = 37h AL = text attribute type (00h normal VGA, 01h mainframe type) Return: AL = 12h if supported SeeAlso: #0025,AH=08h Bitfields for XGA mainframe type character attributes: Bit(s) Description (Table 0025) 7 blink double rate (75% ON time) or use color 8 as background (see AX=1003h) 6 reverse video 5 underlined 4 left-most and right-most dots of underline area inverted 3 foreground intensity/character font select 2-0 foreground color SeeAlso: #0013,#0033 --------V-1012--BL53------------------------- INT 10 - Tseng ET-4000 BIOS v8.00 (06/07/91) - BUG AH = 12h BL = 53h Note: due to an omitted end-of-list marker, this version of the BIOS will crash the system on this function --------V-1012--BL57------------------------- INT 10 - Tseng ET-4000 BIOS v8.00 (06/07/91) - BUG AH = 12h BL = 57h Note: due to an omitted end-of-list marker, this version of the BIOS will crash the system on this function --------V-1012--BH55------------------------- INT 10 - VIDEO - ALTERNATE FUNC SELECT (ATI,Tatung,Taxan) - ENHANCED FEATURES AH = 12h BH = 55h BL = subfunction 00h disable enhanced features 01h enable enhanced features 02h get status Return: AL = status flags (see #0026) 03h disable register trapping (CGA emulation) 04h enable register trapping 05h program video mode ES:BP -> video mode table (see #0027) 06h get mode table AL = video mode Return: ES:BP -> table suitable for mode AL (and subfunc BL=05h) (see #0027) BP = FFFFh on error SI = 0000h (ATI Mach32) Note: the ATI Mouse driver (MOUSE.COM/MOUSE.SYS) uses subfunction 06h to get the mode table for mode 03h, and then looks for a signature string beginning within 32 bytes of the offset specified by the word at ES:000Ch SeeAlso: AH=FFh"Oak" Index: installation check;ATI video adapters Bitfields for status flags: Bit(s) Description (Table 0026) 3 set if enhanced features enabled 7-5 monitor type 000 PS/2 mono 001 PS/2 color 010 multi-sync 011 Taxan 650 25kHz 100 RGB 101 mono 110 EGA 111 Compaq internal Format of ATI VGA Wonder video mode table: Offset Size Description (Table 0027) 00h BYTE number of columns 01h BYTE maximum row (number of rows - 1) 02h BYTE scan lines per row 03h WORD video buffer size in bytes 05h 4 BYTEs values for Sequencer registers 1-4 09h BYTE value for Miscellaneous Output register 0Ah 25 BYTEs values for CRTC registers 00h-18h 00h horizontal total size (chars) 01h horizontal displayed (chars) 02h horizontal sync position (chars) 03h horizontal sync width (chars) 04h vertical total size (char rows) 05h vertical total adjust (scan lines) 06h vertical displayed (char rows) 07h vertical sync position (char rows) 08h interlace mode 09h max scan line in row 0Ah cursor start scan line 0Bh cursor end scan line 0Ch screen memory start (high) 0Dh screen memory start (low) 0Eh cursor address (high) 0Fh cursor address (low) 10h light pen (high) 11h light pen (low) 23h 20 BYTEs default palette (values for Attribute Controller regs 00h-13h) 37h 9 BYTEs values for Graphics Controller registers 00h-08h --------V-1012--BL74------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = 74h Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1012--BL80------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = 80h Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1012--BL80------------------------- INT 10 - Cirrus Logic BIOS - INQUIRE VGA TYPE AH = 12h BL = 80h Return: AX = controller type in bits 13-0 (see #0028) bit 14: ??? bit 15: ??? BL = silicon revision number (bit 7 set if not available) SeeAlso: AH=12h/BL=81h,AH=12h/BL=82h,AH=12h/BL=85h,AH=12h/BL=9Ah,AH=12h/BL=A1h (Table 0028) Values for Cirrus Logic video controller type: 0000h no extended alternate select support 0002h 510/520 0003h 610/620 0004h 5320 0005h 6410 0006h 5410 0007h 6420 0008h 6412 0010h 5401 0011h 5402 0012h 5420 0013h 5422 0014h 5424 0015h 5426 0016h 5420r1 0017h 5402r1 0018h 5428 0020h 6205/15/25 0030h 5432 0031h 5434 --------V-1012--BL81------------------------- INT 10 - Cirrus Logic BIOS - GET BIOS VERSION NUMBER AH = 12h BL = 81h Return: AH = BIOS major version AL = BIOS minor version SeeAlso: AH=12h/BL=80h,AH=12h/BL=82h --------V-1012--BL82------------------------- INT 10 - Cirrus Logic BIOS - GET DESIGN REVISION CODE AH = 12h BL = 82h Return: AL = chip revision AH = ??? (AFh for v1.01) SeeAlso: AH=12h/BL=80h,AH=12h/BL=81h --------V-1012--BL84------------------------- INT 10 - Cirrus Logic BIOS v3.02 - INQUIRE OPTIONS AH = 12h BL = 84h Return: AX = user options word (see #0029) SeeAlso: AH=12h/BL=89h,AH=12h/BL=8Ah,AH=12h/BL=8Bh,AH=12h/BL=8Ch,AH=12h/BL=8Fh SeeAlso: AH=12h/BL=90h,AH=12h/BL=9Ah Bitfields for Cirrus Logic user options word: Bit(s) Description (Table 0029) 1,0 centering 00 vertical centered, 01 from bottom, 10 from top, 11 reserved 3,2 720-dot fix-up options 00 OR every 8th and 9th pixel 01 display MGA mode from left 10 display MGA mode from right 11 skip every 9th pixel 4 ??? 7-5 video mode (001 CGA, 010 MGA, 011 EGA, 100 VGA) 8 external monitor enabled instead of LCD panel 9 vertical expand mode enabled 10 8-bit mode instead of 16-bit mode 11 normal video rather than reverse video (for LCD) 12 attribute automap rather than attribute emulation 13 bold mode disabled (default) 14 fast bandwidth 15 ??? --------V-1012--BL85------------------------- INT 10 - Cirrus Logic BIOS - GET INSTALLED MEMORY AH = 12h BL = 85h Return: AL = number of 64K banks of video memory SeeAlso: AH=12h/BL=80h,AH=12h/BL=93h --------V-1012--BL89------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - EN/DISABLE REVERSE VIDEO MODE AH = 12h BL = 89h AL = new state (00h enabled, 01h disabled) SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=8Bh --------V-1012--BL8A------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET FRAME COLOR AH = 12h BL = 8Ah AL = new gray-scale color (00h = black to 0Fh = white) SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Fh --------V-1012--BL8B------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - ENABLE/DISABLE BOLD MODE AH = 12h BL = 8Bh AL = new state (00h enabled, 01h disabled) SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Ch,AH=12h/BL=8Fh --------V-1012--BL8C------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET AUTOMAP/EMULATE ATTRIBUTES AH = 12h BL = 8Ch AL = new state 00h enable automap 01h disable automap and emulate attributes SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Bh --------V-1012--BL8F------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - ENABLE/DISABLE EXPAND MODE AH = 12h BL = 8Fh AL = new state (00h enabled, 01h disabled) Note: when expand mode is enabled, the vertical dimension is enlarged to full screen SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=8Bh,AH=12h/BL=90h --------V-1012--BL90------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET CENTERING MODE AH = 12h BL = 90h AL = new position 00h centered 01h from top 02h from bottom 03h from top SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Fh --------V-1012--BL91------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SET 720-DOT FIXUP MODE AH = 12h BL = 91h AL = new mode 00h display MGA mode from left of screen (default) 01h display MGA from right 02h skip every ninth pixel 03h OR every 8th and 9th pixel SeeAlso: AH=12h/BL=84h,AH=12h/BL=8Ah,AH=12h/BL=90h --------V-1012--BL92------------------------- INT 10 - Cirrus Logic BIOS v3.02 - LCD panel - SWITCH DISPLAY AH = 12h BL = 92h AL = new display (00h LCD, 01h external monitor) Note: the deselected display is disabled SeeAlso: AH=12h/BL=84h,AH=12h/BL=89h,AH=12h/BL=90h,AH=12h/BL=94h --------V-1012--BL93------------------------- INT 10 - Cirrus Logic BIOS - FORCE 8-BIT OR 16-BIT OPERATION AH = 12h BL = 93h AL = new I/O width (00h = 16 bits, 01h = 8 bits) SeeAlso: AH=12h/BL=9Ah --------V-1012--BL94------------------------- INT 10 - Cirrus Logic BIOS v3.02 - POWER CONSERVATION AH = 12h BL = 94h AL = new state (00h wake up monitor, 01h shut down display) Note: AL=01h is reported not to work properly on the LCD panel SeeAlso: AH=12h/BL=84h,AH=12h/BL=92h --------V-1012--BL9A------------------------- INT 10 - Cirrus Logic BIOS - GET USER OPTIONS AH = 12h BL = 9Ah Return: AX = options word 1 (see #0030) CX = options word 2 (see #0031) SeeAlso: AH=12h/BL=80h,AH=12h/BL=84h,AH=12h/BL=93h,AH=12h/BL=A0h SeeAlso: AH=12h/BL=A3h,AH=12h/BL=A4h Bitfields for Cirrus Logic options word 1: Bit(s) Description (Table 0030) 0,1 reserved 2-4 monitor type 5-6 maximum vertical resolution 7-9 reserved 10 force 8-bit operation 11-13 reserved 14 vertical refresh frequency at 640x480 15 reserved Bitfields for Cirrus Logic options word 2: Bit(s) Description (Table 0031) 0-3 reserved 4-5 vertical refresh frequency at 1280x1024 6-10 reserved 11-12 vertical refresh frequency at 800x600 13-15 vertical refresh frequency at 1024x768 --------V-1012--BLA0------------------------- INT 10 - Cirrus Logic BIOS - GET VIDEO MODE AVAILABILITY AH = 12h BL = A0h AL = video mode number (00h-7Fh) Return: AH bit 0: video mode supported BX = offset of BIOS subroutine to fixup standard video parameters (call subroutine with DS:SI and ES:DI as returned by this call) DS:SI -> standard video parameters or FFFFh:FFFFh ES:DI -> supplemental video parameters or FFFFh:FFFFh SeeAlso: AH=00h,AH=12h/BL=9Ah,AH=12h/BL=A1h --------V-1012--BLA1------------------------- INT 10 - Cirrus Logic BIOS - READ MONITOR TYPE AND ID FROM 15-PIN CONNECTOR AH = 12h BL = A1h Return: BH = monitor ID (see #0032) BL = monitor type (00h color, 01h grayscale, 02h no display) SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A2h (Table 0032) Values for Cirrus Logic monitor ID: 00h-08h reserved 09h IBM 8604/8507 or equivalent 0Ah IBM 8514 or equivalent 0Bh IBM 8515 or equivalent 0Dh IBM 8503 or equivalent 0Eh IBM 8512/8513 or equivalent 0Fh no monitor --------V-1012--BLA2------------------------- INT 10 - Cirrus Logic BIOS - SET MONITOR HORIZONTAL RETRACE FREQUENCY AH = 12h BL = A2h AL = retrace rate 00h standard VGA (31.5 kHz) 01h 8514-compatible (31.5 kHz and 35.5 kHz interlaced) 02h SuperVGA (31.5-35.1 kHz) 03h extended SuperVGA (31.5-35.5 kHz) 04h multi-frequency (31.5-37.8 kHz) 05h extended multi-frequency (31.5-48.0 kHz) 06h super multi-frequency (31.5-56.0 kHz) 07h extended super multi-frequency (31.5-64.0 kHz) SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A0h,AH=12h/BL=A4h --------V-1012--BLA3------------------------- INT 10 - Cirrus Logic BIOS - SET VGA REFRESH AH = 12h BL = A3h AL = refresh rate for 640x480 (00h normal, 01h high) SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A4h --------V-1012--BLA4------------------------- INT 10 - Cirrus Logic BIOS - SET MONITOR TYPE AH = 12h BL = A4h AL bits 3-0 = maximum vertical resolution (0 = 480 scanlines, 1 = 600, 2 = 768, 3 = 1024, other reserved) AL bits 7-4 = vertical refresh at 640x480 (0 = 60Hz, 1 = 72Hz, other reserved) BH bits 3-0 = vertical refresh at 800x600 (0 = 56Hz, 1 = 60Hz, 2 = 72Hz, other reserved) BH bits 7-4 = vertical refresh at 1024x768 (0=87Hz-int, 1=60Hz, 2=70Hz, 3=72Hz, 4=76Hz, other reserved) CH bits 4-7 = vertical refresh at 1280x1024 (0=87Hz-int, 1=60Hz, 2=70Hz, other reserved) SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A3h --------V-1012--BLBE------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = BEh Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1012--BLC6------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = C6h Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1012--BLF0------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 12h BL = F0h Note: due to an omitted end-of-list marker, these versions of the BIOS will crash the system on this function --------V-1013------------------------------- INT 10 - VIDEO - WRITE STRING (AT and later,EGA) AH = 13h AL = write mode bit 0: update cursor after writing bit 1: string contains alternating characters and attributes bits 2-7: reserved (0) BH = page number BL = attribute if string contains only characters CX = number of characters in string DH,DL = row,column at which to start writing ES:BP -> string to write Notes: recognizes CR, LF, BS, and bell; for the ET4000 BIOS, scrolling, backspace, and CR only take place in the active page also available PC or XT with EGA or higher HP 95LX only supports write mode 00h BUG: on the IBM VGA Adapter, any scrolling which may occur is performed on the active page rather than the requested page SeeAlso: AH=09h,AH=0Ah,AH=13h"DOS/V" --------J-1013------------------------------- INT 10 - DOS/V - READ/WRITE DOUBLE-BYTE CHARACTER SET CHARACTERS/ATTRIBUTES AH = 13h AL = function 10h read characters and standard attributes 11h read characters and extended attributes 12h write characters and standard attributes 13h write characters and extended attributes BH = 00h CX = number of characters to transfer DH,DL = row,column at which to start transfer ES:BP -> buffer for/containing characters and attributes (see #0033) Return: ES:BP buffer filled if reading Program: DOS/V is a Japanese-language version of MS-DOS which can run on standard (non-Japanese) ATs and compatible equipped with a VGA or newer video adapter Notes: subfunctions 11h and 13h are only valid when DOS/V is using video mode 73h the cursor position is not changed by these functions extended attributes consist of three bytes; the first is the standard character attribute byte, the second is as described below, and the third is always zero in current versions SeeAlso: AH=00h,AH=13h"VIDEO" Bitfields for DOS/V second extended attribute byte: Bit(s) Description (Table 0033) 7 underline using foreground color 6 reverse foreground/background specified in standard attribute byte 5-4 unused 3 vertical white grid line in cell 2 horizontal white grid line in cell 1-0 unused SeeAlso: #0013,#0025 --------V-101400----------------------------- INT 10 - VIDEO - LOAD USER-SPECIFIED LCD CHARACTER FONT (CONV,Compaq Port 386) AX = 1400h ES:DI -> character font BH = number of bytes per character 08h or 10h (Compaq) BL = 00h load main font (block 0) 01h load alternate font (block 1) CX = number of characters to store DX = character offset into RAM font area SeeAlso: AH=11h,AX=1401h --------V-101401----------------------------- INT 10 - VIDEO - LOAD SYSTEM ROM DEFAULT LCD CHARACTER FONT (CONV,CP386) AX = 1401h BL = font to load 00h main font (block 0) 01h alternate font (block 1) SeeAlso: AH=11h,AX=1400h --------V-101402----------------------------- INT 10 - VIDEO - SET MAPPING OF LCD HIGH INTENSITY ATTRIBUTES (CONV,CP386) AX = 1402h BL = function 00h ignore high intensity attribute 01h map high intensity to reverse video 02h map high intensity to underscore 03h map high intensity to selected alternate font B0h half intensity (Compaq) B1h toggle active intensity bit interpretation (CP386) --------V-1015------------------------------- INT 10 - VIDEO - GET PHYSICAL DISPLAY PARAMETERS (CONVERTIBLE) AH = 15h Return: AX = alternate display adapter type (see #0034) ES:DI -> parameter table (see #0035) SeeAlso: AH=1Bh (Table 0034) Values for PC Convertible alternate display adapter type: 0000h none 5140h LCD 5153h CGA 5151h mono Format of PC Convertible display parameter table: Offset Size Description (Table 0035) 00h WORD monitor model number 02h WORD vertical pixels per meter 04h WORD horizontal pixels per meter 06h WORD total vertical pixels 08h WORD total horizontal pixels 0Ah WORD horizontal pixel separation in micrometers (width, center-to-center) 0Ch WORD vertical pixel separation in micrometers (height, center-to-center) --------V-1015------------------------------- INT 10 - VIDEO - SET SUPERIMPOSE MODE (Sperry PC) AH = 15h AL = superimpose mode 00h show graphics screen 01h show text screen 02h show text screen superimposed on graphics screen --------J-1018------------------------------- INT 10 - VIDEO - DOS/V - GET/SET FONT PATTERN AH = 18h AL = function 00h get font pattern 01h set font pattern BX = 0000h CL = character size in bytes (01h,02h) CH = 00h DH = character width in pixels DL = character height in pixels ES:DI -> buffer for/containing font image Return: AL = status (00h successful, else error) ES:DI buffer filled for function 00h if successful Note: the supported font sizes are 8x16 single-byte, 8x19 single-byte, 16x16 double-byte, and 24x24 double-byte SeeAlso: AH=19h,INT 16/AH=14h --------V-1019------------------------------- INT 10 - Japanese VIDEO - DOUBLE-BYTE CHARACTER SET SHIFT INFORMATION AH = 19h ??? Return: ??? SeeAlso: AH=18h,INT 16/AH=14h --------V-101A00----------------------------- INT 10 - VIDEO - GET DISPLAY COMBINATION CODE (PS,VGA/MCGA) AX = 1A00h Return: AL = 1Ah if function was supported BL = active display code (see #0036) BH = alternate display code (see #0036) Notes: this function is commonly used to check for the presence of a VGA this function is supported on the ATI EGA Wonder with certain undocumented configuration switch settings, even though the EGA Wonder does not support VGA graphics; to distinguish this case, call AX=1C00h with CX nonzero, which the EGA Wonder does not support SeeAlso: AH=12h/BL=35h,AX=1A01h,AH=1Bh Index: installation check;VGA (Table 0036) Values for display combination code: 00h no display 01h monochrome adapter w/ monochrome display 02h CGA w/ color display 03h reserved 04h EGA w/ color display 05h EGA w/ monochrome display 06h PGA w/ color display 07h VGA w/ monochrome analog display 08h VGA w/ color analog display 09h reserved 0Ah MCGA w/ digital color display 0Bh MCGA w/ monochrome analog display 0Ch MCGA w/ color analog display FFh unknown display type --------V-101A01----------------------------- INT 10 - VIDEO - SET DISPLAY COMBINATION CODE (PS,VGA/MCGA) AX = 1A01h BL = active display code (see #0036) BH = alternate display code Return: AL = 1Ah if function was supported SeeAlso: AH=12h/BL=35h,AX=1A00h --------V-101B------------------------------- INT 10 - VIDEO - FUNCTIONALITY/STATE INFORMATION (PS,VGA/MCGA) AH = 1Bh BX = implementation type 0000h return funtionality/state information ES:DI -> 64-byte buffer for state information (see #0037) Return: AL = 1Bh if function supported ES:DI buffer filled with state information BUG: Trident 8900 (BIOS D3.0 11/12/91) and Trident 9000 (C3.0 10/25/91) do not correctly set the fields at offsets 27h and 29h of the state information SeeAlso: AH=15h,AX=1A00h,AX=1F01h Format of MCGA+ state information: Offset Size Description (Table 0037) 00h DWORD address of static funtionality table (see #0040) 04h BYTE video mode in effect 05h WORD number of columns 07h WORD length of regen buffer in bytes 09h WORD starting address of regen buffer 0Bh WORD cursor position for page 0 0Dh WORD cursor position for page 1 0Fh WORD cursor position for page 2 11h WORD cursor position for page 3 13h WORD cursor position for page 4 15h WORD cursor position for page 5 17h WORD cursor position for page 6 19h WORD cursor position for page 7 1Bh WORD cursor "type" (start/stop scan lines) 1Dh BYTE active display page 1Eh WORD CRTC port address 20h BYTE current setting of register (3?8) 21h BYTE current setting of register (3?9) 22h BYTE number of rows - 1 23h WORD bytes/character 25h BYTE display combination code of active display 26h BYTE DCC of alternate display 27h WORD number of colors supported in current mode (0000h = mono) 29h BYTE number of pages supported in current mode 2Ah BYTE number of scan lines active (0,1,2,3) = (200,350,400,480) Tseng ET3000: (4,5,6 = 512,600,768) 2Bh BYTE primary character block 2Ch BYTE secondary character block 2Dh BYTE miscellaneous flags (see #0038) 2Eh 3 BYTEs reserved (00h) 31h BYTE video memory available 00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K 32h BYTE save pointer state flags (see #0039) 33h 13 BYTEs reserved (00h) Bitfields for miscellaneous flags: Bit(s) Description (Table 0038) 0 all modes on all displays on 1 gray summing on 2 monochrome display attached 3 default palette loading disabled 4 cursor emulation enabled 5 0 = intensity; 1 = blinking 6 PS/2 P70 plasma display (without 9-dot wide font) active 7 unused (0) Bitfields for save pointer state flags: Bit(s) Description (Table 0039) 0 512 character set active 1 dynamic save area present 2 alpha font override active 3 graphics font override active 4 palette override active 5 DCC override active 6-7 unused (0) Format of Static Functionality Table: Offset Size Description (Table 0040) 00h BYTE modes supported 1 bit 0 to bit 7 = 1 modes 0,1,2,3,4,5,6,7 supported 01h BYTE modes supported 2 bit 0 to bit 7 = 1 modes 8,9,0Ah,0Bh,0Ch,0Dh,0Eh,0Fh supported 02h BYTE modes supported 3 bit 0 to bit 3 = 1 modes 10h,11h,12h,13h supported bit 4 to bit 7 unused (0) 03h BYTE (IBM) reserved (Tseng ET3000/4000) modes supported 4 bit 0 to bit 7 = modes 18h-1Fh supported 04h BYTE (IBM) reserved (Tseng ET3000/4000) modes supported 5 bit 0 to bit 7 = modes 20h-27h supported 05h BYTE (IBM) reserved (Tseng ET3000/4000) modes supported 6 bit 0 to bit 7 = modes 28h-2Fh supported 06h BYTE (IBM) reserved (Tseng ET3000/4000) modes supported 7 bit 0 to bit 7 = modes 30h-37h supported 07h BYTE scan lines supported bit 0 to bit 2 = 1 if scan lines 200,350,400 supported bits 3-7 = unused (0) 08h BYTE total number of character blocks available in text modes 09h BYTE maximum number of active character blocks in text modes 0Ah WORD miscellaneous function support flags (see #0041) 0Ch WORD reserved 0Eh BYTE save pointer function flags (see #0042) 0Fh BYTE reserved Bitfields for miscellaneous function support flags: Bit(s) Description (Table 0041) 0 all modes on all displays function supported 1 gray summing function supported 2 character font loading function supported 3 default palette loading enable/disable supported 4 cursor emulation function supported 5 EGA palette present 6 color palette present 7 color-register paging function supported 8 light pen supported (see AH=04h) 9 save/restore state function 1Ch supported 10 intensity/blinking function supported (see AX=1003h) 11 Display Combination Code supported (see #0036) 12-15 unused (0) Bitfields for save pointer function flags: Bit(s) Description (Table 0042) 0 512 character set supported 1 dynamic save area supported 2 alpha font override supported 3 graphics font override supported 4 palette override supported 5 DCC extension supported 6-7 unused (0) --------V-101C------------------------------- INT 10 - VIDEO - SAVE/RESTORE VIDEO STATE (PS50+,VGA) AH = 1Ch AL = function 00h return state buffer size Return: BX = number of 64-byte blocks needed 01h save video state ES:BX -> buffer 02h restore video state ES:BX -> buffer containing previously saved state CX = requested states (see #0043) Return: AL = 1Ch if function supported Notes: many BIOSes corrupt the video registers when saving the state, so a program should restore the state immediately after saving it (the saved data is uncorrupted) the BIOS data area consists of the 96 bytes from 0040h:0049h-00A8h this function is not supported when DOS/V is running Bitfields for requested states: Bit(s) Description (Table 0043) 0 video hardware (see #0044) 1 BIOS data areas 2 color registers and DAC state (see #0045) 3-15 unused (0) Format of VGA video hardware state: Offset Size Description (Table 0044) 00h BYTE sequencer index register 01h BYTE CRTC index register 02h BYTE graphics controller index register 03h BYTE attribute controller index register 04h BYTE feature controller register 05h 4 BYTEs sequencer registers 09h BYTE sequencer register 0 0Ah 25 BYTEs CRTC registers 0-8 23h 16 BYTEs palette registers 00h-0Fh 33h 4 BYTEs attribute registers 10h-13h 37h 9 BYTEs graphics controller registers 0-8 40h BYTE CRTC base address (low) 41h BYTE CRTC base address (high) 42h BYTE plane 0 latch 43h BYTE plane 1 latch 44h BYTE plane 2 latch 45h BYTE plane 3 latch Format of VGA DAC state: Offset Size Description (Table 0045) 00h BYTE read/write mode DAC 01h BYTE pixel address 02h BYTE pixel mask 03h 768 BYTEs color data (256 triples) 303h BYTE color select register --------J-101D------------------------------- INT 10 - VIDEO - DOS/V - SHIFT STATUS LINE CONTROL AH = 1Dh AL = function 00h enable shift status line(s) BX = number of lines to reserve at bottom of screen (usu. 1) 01h disable shift status line BX = number of lines reserved at bottom of screen (usually 1) 02h get number of status lines Return: BX = number of lines reserved for shift status SeeAlso: AH=19h --------V-101D------------------------------- INT 10 - SpeedSTAR Plus BIOS v4.23+ - SET SYNC PARAMETERS AH = 1Dh AL = video mode ES = caller's segment Return: nothing Note: the caller's segment contains at offset 5Ch (FCB field in PSP) or 100h a table with sync parameters (see #0046) (BIOS looks at both offsets) Format of SpeedSTAR Plus sync table: Offset Size Description (Table 0046) 00h 9 BYTEs ID contains string 'ey5CENTER' 09h 5 BYTEs sync parameters for 640x480 modes 11h,12h,25h,26h,2Eh 0Bh 5 BYTEs sync parameters for 800x600 modes 29h,30h,2Ah 13h 5 BYTEs sync parameters for 1024x768 modes 37h,38h --------V-101D------------------------------- INT 10 - Tseng ET-4000 BIOS v3.00 and v8.00 - BUG AH = 1Dh Note: these versions of the BIOS jump to a random location on this function due to a fencepost error --------V-101F00----------------------------- INT 10 - VIDEO - XGA - GET DMQS (Display Mode Query and Set) DATA LENGTH AX = 1F00h Return: AL = 1Fh if supported BX = number of bytes of DMQS data Note: not supported on the original IBM XGA, only on XGA-NI (non-interlaced) and later models. SeeAlso: AX=1F01h --------V-101F01----------------------------- INT 10 - VIDEO - XGA - READ DMQS DATA AX = 1F01h ES:DI -> user buffer for return data (call AX=1F00h for size) Return: AL = 1Fh if function supported user buffer filled with DMQS data (see #0047) Note: not supported on the original IBM XGA, only on XGA-NI (non-interlaced) and later models. SeeAlso: AH=1Bh,AX=1F00h,AX=3000h Format of XGA DMQS buffer: Offset Size Description (Table 0047) 00h WORD offset (in bytes) to DMQS data for next XGA instance 02h BYTE slot number 03h BYTE XGA implementation function level identifier 04h BYTE XGA implementation resolution level identifier 05h WORD vendor identifier - identifies card vendor 07h WORD vendor defined field 09h WORD XGA adapter I/O register base address 0Bh WORD XGA coprocessor register base address (paragraph--multiply by 10h to get physical address) 0Dh WORD 1 Megabyte system video memory aperture 0000h if not allocated (Multiply by 100000h to get physical address) 0Fh WORD 4 Megabyte system video memory aperture 0000h if not allocated (multiply by 100000h to get physical address) 11h WORD video memory base address (multiply by 100000h to get physical address) 13h WORD composite ID of the attached display 15h BYTE amount of video memory available, in multiples of 256K bytes 16h DWORD alternate XGA coprocessor register base address. 0 = none. 1Ah var DMQS Data for further XGA Instances (as above) Note: "Instances" refers to the capability of having up to 8 XGA adapters in one computer. --------V-103000CX0000----------------------- INT 10 - VIDEO - LOCATE 3270PC CONFIGURATION TABLE (INSTALLATION CHECK) AX = 3000h CX = 0000h DX = 0000h Return: CX:DX -> 3270PC configuration table (see #0048) CX:DX = 0000h:0000h if 3270PC Control Program not active SeeAlso: AX=1F01h Format of 3270 PC configuration table: Offset Size Description (Table 0048) 00h BYTE aspect ratio X 01h BYTE aspect ratio Y 02h BYTE monitor type (see #0049) 03h BYTE reserved 04h BYTE adapter ID 00h = 5151/5272 adapter 04h = 5151/5272 with XGA adapter 30h = 3295 or 3270PC G/GX adapter 05h BYTE reserved 06h BYTE function flags 1 (see #0050) 07h BYTE function flags 2 bit 6: GPI graphics supported 08h WORD segment address of Control Program Level table (see #0051) 0Ah 10 BYTEs reserved (Table 0049) Values for 3270 PC monitor type: 00h 5151 (mono) or 5272 (color) 01h 3295 02h 5151 or 5272 with XGA (???) graphics adapter 03h 5279 with 3270PC G adapter 04h 5379 model C01 with 3270PC GX adapter 05h 5379 model M01 with 3270PC GX adapter 07h non-3270PC with 3270 Workstation Program FFh 3270PC Control Program not loaded Bitfields for 3270 PC function flags 1: Bit(s) Description (Table 0050) 7 mono text, 1 page 6 color text, 1 page 5 color text, 4 pages 4 CGA color graphics 3 720x350 two-color graphics 2 360x350 four-color graphics 1 720x350 eight-color graphics Format of Control Program Level table: Offset Size Description (Table 0051) 00h WORD program version 02xxh = 3270PC Control Program v2.xx 03xxh = 3270PC Control Program v3.xx 04xxh = 3270 Workstation Program v1.xx 02h BYTE Control Program ID (00h) 03h 27 BYTEs Control Program Descriptor ("IBM 3270 PC CONTROL PROGRAM") --------a-103800----------------------------- INT 10 - Tinytalk Personal v1.09f+ - GET CONFIGURATION INFO AX = 3800h Return: ES:DI -> configuration info (see #0052) Program: Tinytalk is a shareware screen reader by OMS Development/Eric Bohlman Notes: this call is also used as the installation check by verifying that the returned ES:DI points at valid configuration info Tinytalk v1.09f ignores AL and always returns the configuration info; v1.10 adds several subfunctions selected with AL SeeAlso: AX=3801h,AX=3803h,AX=3806h,AH=39h,INT 14/AX=F0F1h SeeAlso: INT 2F/FB00h"AutoBraille" Index: installation check;Tinytalk Personal Format of Tinytalk Personal configuration info: Offset Size Description (Table 0052) 00h 8 BYTEs signature "TTCONFIG" 08h WORD size of configuration data, not counting signature, this WORD, or the following byte 0Ah BYTE ??? 0Bh ??? configuration data --------a-103801----------------------------- INT 10 - Tinytalk Personal v1.10 - ??? AX = 3801h DL = ??? Return: ??? SeeAlso: AX=3800h,AX=3802h --------a-103802----------------------------- INT 10 - Tinytalk Personal v1.10 - ??? AX = 3802h DL = ??? Return: ??? SeeAlso: AX=3800h,AX=3801h --------a-103803----------------------------- INT 10 - Tinytalk Personal v1.10 - GET ??? AX = 3803h Return: AL = ??? SeeAlso: AX=3800h,AX=3804h,AX=3805h --------a-103804----------------------------- INT 10 - Tinytalk Personal v1.10 - GET ??? AX = 3804h Return: AX = ??? SeeAlso: AX=3800h,AX=3803h,AX=3805h --------a-103805----------------------------- INT 10 - Tinytalk Personal v1.10 - GET ??? AX = 3805h Return: AL = ??? SeeAlso: AX=3800h,AX=3803h,AX=3804h --------a-103806----------------------------- INT 10 - Tinytalk Personal v1.10 - ??? AX = 3806h ES:DX -> ASCIZ ??? Return: ??? SeeAlso: AX=3800h --------a-1039------------------------------- INT 10 - Tinytalk Personal v1.10 - ??? AH = 39h Program: Tinytalk is a shareware screen reader by OMS Development/Eric Bohlman Note: this function was a NOP in TTDEMO.EXE, but may be implemented in other variants of Tinytalk --------V-1040------------------------------- INT 10 - VIDEO - SET GRAPHICS MODE (Hercules GRAFIX) AH = 40h Desc: switch the Hercules Graphics Card into graphics mode (720x348) SeeAlso: AH=00h,AH=41h Index: video modes;Hercules --------V-1041------------------------------- INT 10 - VIDEO - SET TEXT MODE (Hercules GRAFIX) AH = 41h Desc: switch the Hercules Graphics Card into text mode SeeAlso: AH=00h,AH=40h Index: video modes;Hercules --------V-1042------------------------------- INT 10 - VIDEO - CLEAR CURRENT PAGE (Hercules GRAFIX) AH = 42h SeeAlso: AH=45h --------V-1043------------------------------- INT 10 - VIDEO - SELECT DRAWING PAGE (Hercules GRAFIX) AH = 43h AL = page number (0,1) Desc: specify which of the two pages of video memory is to be used for output SeeAlso: AH=05h,AH=44h,AH=45h --------V-1044------------------------------- INT 10 - VIDEO - SELECT DRAWING FUNCTION (Hercules GRAFIX) AH = 44h AL = drawing function 00h clear pixels 01h set pixels 02h invert pixels Desc: specify how graphics output will change the display SeeAlso: AH=45h,AH=46h,AH=4Ch,AH=4Dh --------V-1045------------------------------- INT 10 - VIDEO - SELECT PAGE TO DISPLAY (Hercules GRAFIX) AH = 45h AL = page number (0,1) Desc: specify which of the two pages of video memory is visible on screen SeeAlso: AH=05h,AH=42h,AH=43h --------V-1046------------------------------- INT 10 - VIDEO - DRAW ONE PIXEL (Hercules GRAFIX) AH = 46h DI = x (0-719) BP = y (0-347) Note: function 44h determines operation and function 43h which page to use SeeAlso: AH=0Ch,AH=47h,AH=49h,AH=4Ch,AH=4Dh --------V-1047------------------------------- INT 10 - VIDEO - FIND PIXEL VALUE (Hercules GRAFIX) AH = 47h DI = x (0-719) BP = y (0-347) Return: AL = 00h pixel clear AL = 01h pixel set Note: function 43h specifies which page is used SeeAlso: AH=0Dh,AH=46h --------V-1048------------------------------- INT 10 - VIDEO - MOVE TO POINT (Hercules GRAFIX) AH = 48h DI = x (0-719) BP = y (0-347) Desc: specify the location from which to start the next graphics output SeeAlso: AH=49h --------V-1049------------------------------- INT 10 - VIDEO - DRAW TO POINT (Hercules GRAFIX) AH = 49h DI = x (0-719) BP = y (0-347) Note: function 48h or 49h specify first point, 44h operation and 43h page to use SeeAlso: AH=43h,AH=44h,AH=48h,AH=4Ch,AH=4Dh --------V-104A------------------------------- INT 10 - VIDEO - BLOCK FILL (Hercules GRAFIX) AH = 4Ah DI = x coordinate of lower left corner BP = y coordinate of lower left corner BX = height in pixels CX = width in pixels Desc: draw a solid rectangle of the specified size at the given location SeeAlso: AH=4Eh --------V-104B------------------------------- INT 10 - VIDEO - DISPLAY CHARACTER (Hercules GRAFIX) AH = 4Bh AL = character to display DI = x (0-719) BP = y (0-347) Note: unlike the other BIOS character functions character position is specified in pixels rather than rows and columns SeeAlso: AH=09h,AH=0Ah ----------104B------------------------------- INT 10 - FRIEZE - API AH = 4Bh CL = function 00h (v6.x-) print window AL = mode 00h character 01h normal 02h sideways 01h load window ES:BX -> ASCIZ filename from which to read 02h save window ES:BX -> ASCIZ filename to which to write 03h set print width AL = width in 1/4 inches 04h set print height AL = height in 1/4 inches 05h reserved 06h set left margin AL = printout margin in 1/4 inches 07h set window size ES:BX -> four-WORD structure with Xmin, Ymin, Xmax, Ymax 08h reserved 09h set patterns ES:BX -> 16-BYTE vector of screen->printer color correspondnces 0Ah get patterns ES:BX -> 16-BYTE buffer for color correspondences 0Bh set mode AL = mode 0Ch (v7.41) ??? AL = ??? 00h ??? (calls original INT 05) else ??? 0Dh (v7.41) ??? AL = ??? 00h ??? (calls original INT 05) else ??? 0Eh (v7.41) ??? ??? 0Fh get window ES:BX -> four-WORD buffer for Xmin, Ymin, Xmax, Ymax 10h set print options ES:BX -> printer options in same format as FRIEZE cmdline 11h initialize ES:BX -> three-WORD array from CARDS.DAT for HRes, VRes, code 12h (v7.41) ??? ??? 13h (v7.41) ??? ??? 14h get version Return: AH = major version (00h if FRIEZE version before 7) AL = minor version 15h set parameters ES:BX -> parameter table (see #0054) 16h get parameters ES:BX -> buffer for parameter table (see #0054) 17h get printer resolution ES:BX -> 12-WORD table for six horizontal/vertical resol pairs 18h (v8.0 only) reserved 50h (v7.41) get ??? Return: AX = ??? 51h (v7.41) get ??? Return: ES = ??? (seen 2348h) AX = ??? (seen 8432h) Return: AX = status (see #0053) SeeAlso: AH=0Fh/SI=F123h (Table 0053) Values for FRIEZE function status: 00h successful 01h user aborted printout with ESC 02h reserved 03h file read error 04h file write error or printer error 05h file not found 06h invalid header (not an image or wrong screen mode) or can't create file 07h file close error 08h disk error 09h (v7.0+) printer error 0Ah invalid function 0Bh (v7.0+) can't create file 0Ch (v7.0+) wrong video mode Format of FRIEZE parameter table: Offset Size Description (Table 0054) 00h WORD top margin (1/100 inch) 02h WORD left margin (1/100 inch) 04h WORD horizontal size (1/100 inch) 06h WORD vertical size (1/100 inch) 08h WORD quality/draft mode 00h draft mode 01h quality mode 02h use horizontal/vertical resolution for output resolution 0Ah WORD printer horizontal resolution (dots per inch) 0Ch WORD printer vertical resolution (dots per inch) 0Eh WORD reserved (FFFFh) Note: any field which should remain unchanged may be filled with FFFFh --------V-104C------------------------------- INT 10 - VIDEO - DRAW ARC (Hercules GRAFIX) AH = 4Ch AL = quadrant (1 = upper right, 2 = upper left, etc) DI = x coordinate of center BP = y coordinate of center BX = radius SeeAlso: AH=49h,AH=4Dh --------V-104D------------------------------- INT 10 - VIDEO - DRAW CIRCLE (Hercules GRAFIX) AH = 4Dh DI = x of center BP = y of center BX = radius SeeAlso: AH=49h,AH=4Ch --------V-104E------------------------------- INT 10 - VIDEO - FILL AREA (Hercules GRAFIX) AH = 4Eh DI = x coordinate of an interior point BP = y coordinate of an interior point Desc: fill a convex polygonal area bounded by a contiguous line of the opposite color with the border color Note: the first fill makes the figure solid, the second erases it SeeAlso: AH=4Ah --------V-104E00----------------------------- INT 10 - VESA XGA BIOS Extensions - GET XGA ENVIRONMENT INFORMATION AX = 4E00h ES:DI -> 256-byte buffer for XGA information (see #0055) Return: AL = 4Eh if function supported AH = status 00h successful else error code Desc: determine whether VESA XGA extensions are present and the capabilities supported by the display adapter SeeAlso: AX=4E01h,AX=4E02h,AX=4F00h Index: installation check;VESA XGA Format of XGA information buffer: Offset Size Description (Table 0055) 00h 4 BYTEs signature ("VESA") 04h WORD VESA version number 06h DWORD pointer to ASCIZ OEM string 0Ah DWORD environment flags (see #0056) 0Eh WORD number of XGA adapters installed (other VESA XGA functions require a handle indicating which adapter to use) 10h 240 BYTEs reserved Bitfields for XGA environment flags: Bit(s) Description (Table 0056) 0-1 system bus (00 = MCA, 01 = ISA, 10 = EISA) 2 bus mastering available 3-31 reserved --------V-104E01---------------------------- INT 10 - VESA XGA BIOS Extensions - RETURN XGA SUBSYSTEM INFORMATION AX = 4E01h DX = XGA handle (0 to number of XGAs-1) ES:DI -> 256-byte buffer for subsystem information (see #0057) Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E02h Format of XGA subsystem information: Offset Size Description (Table 0057) 00h DWORD pointer to null-terminated board OEM string 04h DWORD capabilities (see #0058) 08h DWORD pointer to 8KB XGA ROM (or NULL) 0Ch DWORD pointer to the XGA memory mapped registers 10h WORD base address of XGA I/O registers (21x0h) 12h DWORD pointer to start of physical video memory (A000h:0000h or B000h:0000h) 16h DWORD physical address of 4MB aperture (or NULL if none) 1Ah DWORD physical address of 1MB aperture (or NULL if none) 1Eh DWORD physical address of 64KB aperture (or NULL if not enabled) 22h DWORD physical address of OEM aperture (or NULL if none) 26h WORD size of OEM aperture in 64KByte units 28h DWORD pointer to list of video modes The list is a series of WORDs terminated by FFFFh 2Ch WORD number of 64KB blocks on the board 2Eh DWORD XGA manufacturer ID byte 0 POS data index 1 byte 1 is index 2 byte 2 is 21xAh index 75h 32h 206 BYTEs reserved Bitfields for XGA capabilities: Bit(s) Description (Table 0058) 0-1 board bus architecture: 0=MCA, 1=ISA, 3=EISA 2-3 reserved 4-6 DMA Channel assigned for acquiring bus mastership (only for ISA bus) 7 DMA Channel Status (ISA only). enabled if set 8-31 reserved --------V-104E02----------------------------------- INT 10 - VESA XGA BIOS Extensions - RETURN XGA MODE INFORMATION AX = 4E02h CX = Video mode DX = XGA handle ES:DI -> 256 byte buffer for mode information (see #0059) Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E01h Format of XGA mode information: Offset Size Description (Table 0059) 00h WORD attributes of the mode (see #0060) 02h WORD bytes per logical scanline 04h WORD horizontal resolution in pixels 06h WORD vertical resolution in scanlines 08h BYTE character Width in pixels 09h BYTE character Height in pixels 0Ah BYTE number of planes 0Bh BYTE bits per pixels 0Ch BYTE memory model (see #0061) 0Dh BYTE number of Image Pages 0Eh BYTE number of Red bits 0Fh BYTE bit position of Red bit field 10h BYTE number of Green bits 11h BYTE bit position of Green bit field 12h BYTE number of Blue bits 13h BYTE bit position of Blue bit field 14h BYTE number of Reserved bits 15h BYTE bit position of Reserved bit field 16h 235 BYTEs reserved Bitfields for XGA mode attributes: Bit(s) Description (Table 0060) 0 set if mode is supported 1 reserved 2 output is supported by the BIOS 3 reserved 4 if set this is a graphics mode (VGA registers inactive, XGA active), if clear this is a text mode (VGA registers active, XGA inactive) (Table 0061) Values for XGA video memory model: 00h Text Mode 01h CGA graphics 02h Hercules graphics 03h 4-planar graphics 04h Packed Pixel 05h Non-chain 4, 256 color 06h Direct Color 07h YUV-24 --------V-104E03----------------------------------- INT 10 - VESA XGA BIOS Extensions - SET XGA VIDEO MODE AX = 4E03h BX = video mode CX = other command flags bit 0 If clear the feature connector is set to the default state DX = XGA handle ES:DI -> 256 byte buffer Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AH=00h,AX=4E04h,AX=4F02h --------V-104E04----------------------------------- INT 10 - VESA XGA BIOS Extensions - RETURN CURRENT VIDEO MODE AX = 4E04h DX = XGA handle Return: AL = 4Eh if function supported AH = status 00h function successful BX??? = current mode else error code SeeAlso: AH=0Fh,AX=4E03h,AX=4F03h --------V-104E05----------------------------------- INT 10 - VESA XGA BIOS Extensions - SET FEATURE CONNECTOR STATE AX = 4E05h BX = Feature Connector State (see #0062) DX = XGA handle Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E06h Bitfields for XGA Feature Connector State: Bit(s) Description (Table 0062) 0 Feature Connector is enabled 1 Feature Connector is in Output Mode rather than Input Mode 2-15 reserved (0) --------V-104E06----------------------------------- INT 10 - VESA XGA BIOS Extensions - RETURN FEATURE CONNECTOR STATE AX = 4E06h DX = XGA handle Return: AL = 4Eh if function supported AH = status 00h function successful else error code BX = Feature Connector State (see #0062) SeeAlso: AX=4E00h,AX=4E05h --------V-104F00----------------------------- INT 10 - VESA SuperVGA BIOS (VBE) - GET SuperVGA INFORMATION AX = 4F00h ES:DI -> buffer for SuperVGA information (see #0063) Return: AL = 4Fh if function supported AH = status 00h successful ES:DI buffer filled 01h failed ---VBE v2.0--- 02h function not supported by current hardware configuration 03h function invalid in current video mode Desc: determine whether VESA BIOS extensions are present and the capabilities supported by the display adapter SeeAlso: AX=4E00h,AX=4F01h,AX=7F00h,AX=A00Ch Index: installation check;VESA SuperVGA Format of SuperVGA information: Offset Size Description (Table 0063) 00h 4 BYTEs (ret) signature ("VESA") (call) VESA 2.0 request signature ("VBE2"), required to receive version 2.0 info 04h WORD VESA version number (one-digit minor version) 06h DWORD pointer to OEM name "761295520" for ATI 0Ah DWORD capabilities flags (see #0064) 0Eh DWORD pointer to list of supported VESA and OEM video modes (list of words terminated with FFFFh) 12h WORD total amount of video memory in 64K blocks ---VBE v1.x --- 14h 236 BYTEs reserved ---VBE v2.0 --- 14h WORD OEM software version 16h DWORD pointer to vendor name 1Ah DWORD pointer to product name 1Eh DWORD pointer to product revision string 22h 222 BYTEs reserved 100h 256 BYTEs OEM scratchpad Notes: the list of supported video modes is stored in the reserved portion of the SuperVGA information record by some implementations, and it may thus be necessary to either copy the mode list or use a different buffer for all subsequent VESA calls the 1.1 VESA document specifies 242 reserved bytes at the end, so the buffer should be 262 bytes to ensure that it is not overrun; for v2.0, the buffer should be 512 bytes the S3 specific video modes will most likely follow the FFFFH terminator at the end of the standard modes. A search must then be made to find them, FFFFH will also terminate this second list Bitfields for VESA capabilities: Bit(s) Description (Table 0064) 0 DAC can be switched into 8-bit mode 1 non-VGA controller 2 programmed DAC with blank bit 3-31 reserved --------V-104F01----------------------------- INT 10 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION AX = 4F01h CX = SuperVGA video mode ES:DI -> 256-byte buffer for mode information (see #0065) Return: AL = 4Fh if function supported AH = status 00h successful ES:DI buffer filled 01h failed Desc: determine the attributes of the specified video mode SeeAlso: AX=4F00h,AX=4F02h Format of VESA SuperVGA mode information: Offset Size Description (Table 0065) 00h WORD mode attributes (see #0066) 02h BYTE window attributes, window A (see #0067) 03h BYTE window attributes, window B (see #0067) 04h WORD window granularity in KB 06h WORD window size in KB 08h WORD start segment of window A 0Ah WORD start segment of window B 0Ch DWORD -> FAR window positioning function (equivalent to AX=4F05h) 10h WORD bytes per scan line ---remainder is optional for VESA modes in v1.0/1.1, needed for OEM modes--- 12h WORD width in pixels (graphics) or characters (text) 14h WORD height in pixels (graphics) or characters (text) 16h BYTE width of character cell in pixels 17h BYTE height of character cell in pixels 18h BYTE number of memory planes 19h BYTE number of bits per pixel 1Ah BYTE number of banks 1Bh BYTE memory model type (see #0068) 1Ch BYTE size of bank in KB 1Dh BYTE number of image pages 1Eh BYTE reserved (0) ---VBE v1.2+--- 1Fh BYTE red mask size 20h BYTE red field position 21h BYTE green mask size 22h BYTE green field size 23h BYTE blue mask size 24h BYTE blue field size 25h BYTE reserved mask size 26h BYTE reserved mask position 27h BYTE direct color mode info bit 0: color ramp is programmable bit 1: bytes in reserved field may be used by application ---VBE v2.0 --- 28h DWORD physical address of linear video buffer 2Ch DWORD pointer to start of offscreen memory 30h WORD KB of offscreen memory 32h 206 BYTEs reserved (0) Bitfields for VESA SuperVGA mode attributes: Bit(s) Description (Table 0066) 0 mode supported 1 optional information available 2 BIOS output supported 3 set if color, clear if monochrome 4 set if graphics mode, clear if text mode ---VBE v2.0 --- 5 mode is not VGA-compatible 6 bank-switched mode not supported 7 linear framebuffer mode supported Bitfields for VESA SuperVGA window attributes: Bit(s) Description (Table 0067) 0 exists 1 readable 2 writable 3-7 reserved (Table 0068) Values for VESA SuperVGA memory model type: 00h text 01h CGA graphics 02h HGC graphics 03h 16-color (EGA) graphics 04h packed pixel graphics 05h "sequ 256" (non-chain 4) graphics 06h direct color (HiColor, 24-bit color) 07h YUV (luminance-chrominance, also called YIQ) 08h-0Fh reserved for VESA 10h-FFh OEM memory models --------V-104F02----------------------------- INT 10 - VESA SuperVGA BIOS - SET SuperVGA VIDEO MODE AX = 4F02h BX = mode (see #0069,#0070) bit 15 set means don't clear video memory bit 14 set means enable linear framebuffer mode (VBE v2.0+) Return: AL = 4Fh if function supported AH = status 00h successful 01h failed SeeAlso: AX=4E03h,AX=4F01h,AX=4F03h (Table 0069) Values for VESA video mode: 00h-FFh OEM video modes (see #0009 at AH=00h) 100h 640x400x256 101h 640x480x256 102h 800x600x16 103h 800x600x256 104h 1024x768x16 105h 1024x768x256 106h 1280x1024x16 107h 1280x1024x256 108h 80x60 text 109h 132x25 text 10Ah 132x43 text 10Bh 132x50 text 10Ch 132x60 text ---VBE v1.2--- 10Dh 320x200x32K 10Eh 320x200x64K 10Fh 320x200x16M 110h 640x480x32K 111h 640x480x64K 112h 640x480x16M 113h 800x600x32K 114h 800x600x64K 115h 800x600x16M 116h 1024x768x32K 117h 1024x768x64K 118h 1024x768x16M 119h 1280x1024x32K 11Ah 1280x1024x64K 11Bh 1280x1024x16M ---VBE 2.0--- 81FFh special full-memory access mode Note: the special mode 81FFh preserves the contents of the video memory and gives access to all of the memory; VESA recommends that the special mode be a packed-pixel mode SeeAlso: #0009,#0070 Index: video modes;VESA (Table 0070) Values for S3 OEM video mode: 201h 640x480x256 202h 800x600x16 203h 800x600x256 204h 1024x768x16 205h 1024x768x256 206h 1280x960x16 207h 1152x864x256 (Diamond Stealth 64) 208h 1280x1024x16 20Ah 1152x864x64K (Diamond Stealth 64) 211h 640x480x64K (Diamond Stealth 24) 212h 640x480x16M (Diamond Stealth 24) 301h 640x480x32K Note: these modes are only available on video cards using S3's VESA driver SeeAlso: #0069 Index: video modes;S3 --------V-104F03----------------------------- INT 10 - VESA SuperVGA BIOS - GET CURRENT VIDEO MODE AX = 4F03h Return: AL = 4Fh if function supported AH = status 00h successful BX = video mode (see #0069,#0070) bit 14: linear frame buffer enabled (VBE v2.0+) bit 15: don't clear video memory 01h failed SeeAlso: AH=0Fh,AX=4E04h,AX=4F02h --------V-104F04----------------------------- INT 10 - VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE AX = 4F04h DL = subfunction 00h get state buffer size Return: BX = number of 64-byte blocks needed 01h save video states ES:BX -> buffer 02h restore video states ES:BX -> buffer CX = states to save/restore (see #0071) Return: AL = 4Fh if function supported AH = status 00h successful 01h failed Bitfields for VESA SuperVGA states to save/restore: Bit(s) Description (Table 0071) 0 video hardware state 1 video BIOS data state 2 video DAC state 3 SuperVGA state --------V-104F05----------------------------- INT 10 - VESA SuperVGA BIOS - CPU VIDEO MEMORY CONTROL AX = 4F05h BH = subfunction 00h select video memory window DX = window address in video memory (in granularity units) 01h get video memory window Return: DX = window address in video memory (in gran. units) BL = window number 00h window A 01h window B Return: AL = 4Fh if function supported AH = status 00h successful 01h failed SeeAlso: AX=4F01h,AX=4F06h,AX=4F07h,AX=7000h/BX=0004h --------V-104F06----------------------------- INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET LOGICAL SCAN LINE LENGTH (PIXELS) AX = 4F06h BL = function 00h set scan line length CX = desired width in pixels 01h get scan line length Return: AL = 4Fh if function supported AH = status 00h successful 01h failed BX = bytes per scan line CX = number of pixels per scan line DX = maximum number of scan lines Notes: if the desired width is not achievable, the next larger width will be set the scan line may be wider than the visible area of the screen this function is valid in text modes, provided that pixel values are multiplied by the character cell width/height SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h/BL=02h,AX=4F06h/BL=03h,AX=4F07h --------V-104F06BL02------------------------- INT 10 - VESA SuperVGA BIOS v2.0+ - SET LOGICAL SCAN LINE LENGTH (BYTES) AX = 4F06h BL = 02h CX = desired scanline width in bytes Return: AL = 4Fh if function supported AH = status 00h successful 01h failed BX = bytes per scan line CX = number of pixels per scan line DX = maximum number of scan lines Notes: if the desired width is not achievable, the next larger width will be set the scan line may be wider than the visible area of the screen this function is valid in text modes, provided that pixel values are multiplied by the character cell width/height SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h,AX=4F06h/BL=03h,AX=4F07h --------V-104F06BL03------------------------- INT 10 - VESA SuperVGA BIOS v2.0+ - GET MAXIMUM SCAN LINE LENGTH AX = 4F06h BL = 03h Return: AL = 4Fh if function supported AH = status 00h successful 01h failed BX = maximum bytes per scan line CX = maximum number of pixels per scan line Notes: this function is valid in text modes, provided that pixel values are multiplied by the character cell width/height SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h,AX=4F06h/BL=02h,AX=4F07h --------V-104F07----------------------------- INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET DISPLAY START AX = 4F07h BL = function 00h,80h set display start CX = leftmost displayed pixel in scan line DX = first displayed scan line 01h get display start Return: BH = 00h CX = leftmost displayed pixel in scan line DX = first displayed scan line BH = 00h (reserved) Return: AL = 4Fh if function supported AH = status 00h successful 01h failed Notes: this function is valid in text modes, provided that values are multiplied by the character cell width/height subfunction 80h waits until vertical retrace before changing the display start address (VBE v2.0+) SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h --------V-104F08----------------------------- INT 10 - VESA SuperVGA BIOS v1.2+ - GET/SET DAC PALETTE CONTROL AX = 4F08h BL = function 00h set DAC palette width BH = desired number of bits per primary color 01h get DAC palette width Return: AL = 4Fh if function supported AH = status 00h successful 01h failed BH = current number of bits per primary (06h = standard VGA) --------V-104F09----------------------------- INT 10 - VESA SuperVGA BIOS v2.0+ - GET/SET PALETTE ENTRIES AX = 4F09h BL = function 00h set palette 01h get palette 02h set secondary palette data 03h get secondary palette data 80h set palette during vertical retrace CX = number of entries to change DX = starting palette index ES:DI -> palette buffer (see #0072) Return: AL = 4Fh if function supported AH = status 00h successful 01h failed Format of VESA VBE palette entry: Offset Size Description (Table 0072) 00h BYTE red 01h BYTE green 02h BYTE blue 03h BYTE alpha or alignment byte --------V-104F0A----------------------------- INT 10 - VESA SuperVGA BIOS v2.0+ - GET PROTECTED-MODE CODE AX = 4F0Ah BX = function to be copied (see #0073) Return: AL = 4Fh if function supported AH = status 00h successful CX = number of bytes to copy ES:DI -> code for requested function 01h failed (Table 0073) Values for VESA VBE protected-mode function identifiers: 0001h set bank (see AX=4F05h) 0002h set display start (see AX=4F07h) 0003h set palette (see AX=4F09h) --------p-104F10BL00------------------------- INT 10 - VESA VBE/PM (Power Management) v1.0+ - GET CAPABILITIES AX = 4F10h BL = 00h ES:DI = 0000h:0000h (reserved for future use) Return: AL = 4Fh if function supported (installed) AH = call status 00h successful else failed ---if successful--- BL = VBE/PM version (bits 7-4: major, bits 3-0: minor) BH = supported states (see #0074) ES:DI unchanged Index: installation check;VESA VBE/Power Management SeeAlso: AX=4F10h/BL=01h,AX=4F10h/BL=02h Bitfields for VESA VBE/PM supported power states: Bit(s) Description (Table 0074) 0 standby 1 suspend 2 off 3 reduced on --------p-104F10BL01------------------------- INT 10 - VESA VBE/PM (Power Management) v1.0+ - SET DISPLAY POWER STATE AX = 4F10h BL = 01h BH = new state (see #0075) Return: AL = 4Fh if function supported AH = call status 00h successful else failed SeeAlso: AX=4F10h/BL=00h,AX=4F10h/BL=02h,AX=A00Ch (Table 0075) Values for VESA VBE/PM power state: 00h On 01h standby 02h suspend 04h Off 08h reduced On (for flat screens) --------p-104F10BL02------------------------- INT 10 - VESA VBE/PM (Power Management) v1.0+ - GET DISPLAY POWER STATE AX = 4F10h BL = 02h Return: AL = 4Fh if function supported AH = call status 00h successful BH = current power state (see #0075) else failed SeeAlso: AX=4F10h/BL=00h,AX=4F10h/BL=01h --------s-104F13BX0000----------------------- INT 10 - VESA Audio Interface - VBE/AI INSTALLATION CHECK AX = 4F13h BX = 0000h Return: AL = 4Fh if function supported AH = status 00h successful BX = version (0010h for 1.00 -- note nonstandard value!) 01h failed SeeAlso: AX=4F13h/BX=0001h,AX=4F13h/BX=0005h --------s-104F13BX0001----------------------- INT 10 - VESA Audio Interface - LOCATE DEVICE AX = 4F13h BX = 0001h CX = 0000h ??? DX = type of device 0001h Wave device 0002h MIDI device 0003h Volume device Return: AL = 4Fh if function supported AH = status 00h successful CX = handle [returned 1 for DX=1 and 3, and 2 for DX=2] 01h failed SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0002h --------s-104F13BX0002----------------------- INT 10 - VESA Audio Interface - QUERY DEVICE AX = 4F13h BX = 0002h CX = handle DX = query 0001h return length of GeneralDeviceClass 0002h return copy of GeneralDeviceClass (see #0076) 0003h return length of Volume Info Structure 0004h return copy of Volume Info Structure (see #0086) 0005h return length of Volume Services Structure 0006h return copy of Volume Services Structure (see #0088) 0007h-000Fh reserved 0010h-FFFFh device-specific SI:DI -> buffer (functions 0002h,0004h,0006h) Return: AL = 4Fh if function supported AH = status 00h successful SI:DI = length (functions 1,3,5) SI:DI buffer filled (functions 2,4,6) 01h failed Note: functions 0003h to 0006h are only supported for the Volume device Format of GeneralDeviceClass structure: Offset Size Description (Table 0076) 00h 4 BYTEs name of the structure ("GENI") 04h DWORD structure length 08h WORD type of device (1=Wave, 2=MIDI) 0Ah WORD version of VESA driver support (0100h for 1.00) 10h var for CX=handle for Wave device: Wave Info structure (see #0077) some bytes ??? for CX=handle for MIDI device: MIDI Info Structure (see #0082) first 8 bytes of MIDI Service Structure ??? SeeAlso: #0086,#0088 Format of WAVE Info Structure: Offset Size Description (Table 0077) 00h 4 BYTEs name of the structure ("WAVI") 04h DWORD structure length [0000007Eh] 08h DWORD driver software version [00000003h] 0Ch 32 BYTEs vendor name, etc. (ASCIZ string) 2Ch 32 BYTEs vendor product name 4Ch 32 BYTEs vendor chip/hardware description 6Ch BYTE installed board number 6Dh 3 BYTEs unused data 70h DWORD feature bits (see #0078) 74h WORD user determined preference field 76h WORD memory required for driver use [0200h] 78h WORD number of timer tick callbacks per second [0000h] 7Ah WORD channels: 1 = mono, 2 = stereo stereo is assumed to be interleaved data 7Ch WORD bitfield of max sample sizes (see #0079) SeeAlso: #0082 Bitfields for Wave feature bits: Bit(s) Description (Table 0078) 0 8000hz Mono Playback 1 8000hz Mono Record 2 8000hz Stereo Record 3 8000hz Stereo Playback 4 8000hz Full Duplex Play/Record 5 11025hz Mono Playback 6 11025hz Mono Record 7 11025hz Stereo Record 8 11025hz Stereo Playback 9 11025hz Full Duplex Play/Record 10 22050hz Mono Playback 11 22050hz Mono Record 12 22050hz Stereo Record 13 22050hz Stereo Playback 14 22050hz Full Duplex Play/Record 15 44100hz Mono Playback 16 44100hz Mono Record 17 44100hz Stereo Record 18 44100hz Stereo Playback 19 44100hz Full Duplex Play/Record 20-26 reserved (0) 27 driver must pre-handle the data 28 Variable Sample mono playback 29 Variable Sample stereo playback 30 Variable Sample mono record 31 Variable Sample stereo record (Table 0079) Values for Sample data size: 01h 8bit play 02h 16bit play 10h 8bit record 20h 16bit record Format of WAVE Audio Services structure: Offset Size Description (Table 0080) 00h 4 BYTEs name of the structure 04h DWORD structure length 08h 16 BYTEs for future expansion ---entry points (details???)--- 18h DWORD DeviceCheck 11h compression (see also #0081) 12h driver state 13h get current pos 14h sample rate 15h set preference 16h get DMA,IRQ 17h get IO address 18h get mem address 19h get mem free 1Ah full duplex 1Bh get block size 1Ch get PCM format 1Dh enable PCM format 80h-.. vendors can add DevChks above 0x80 1Ch DWORD PCMInfo 20h DWORD PlayBlock 24h DWORD PlayCont 28h DWORD RecordBlock 2Ch DWORD RecordCont 30h DWORD PauseIO 34h DWORD ResumeIO 38h DWORD StopIO 3Ch DWORD WavePrepare 40h DWORD WaveRegister 44h DWORD GetLastError 01h unsupported feature/function 02h bad sample rate 03h bad block length 04h bad block address 05h app. missed an IRQ 06h don't understand the PCM size/format 80h-.. vendors specific errors 48h DWORD TimerTick 4Ch DWORD ApplPSyncCB: CallBack: play filled in by the app 50h DWORD ApplRSyncCB: CallBack: rec filled in by the app SeeAlso: #0084,#0088 (Table 0081) Values for type of compression: 01h IMA play 02h ALAW play 03h ULAW play 11h IMA record 12h ALAW record 13h ULAW record Format of MIDI Info Structure: Offset Size Description (Table 0082) 00h 4 BYTEs name of the structure ("MIDI") 04h DWORD structure length 08h DWORD driver software version [00000003h] 0Ch 32 BYTEs vendor name, etc. (ASCIZ string) 2Ch 32 BYTEs vendor product name 4Ch 32 BYTEs vendor chip/hardware description 6Ch BYTE installed board number 6Dh 3 BYTEs unused data 70h 14 BYTEs the patch library file name [OPL2.BNK 00..] 7Eh DWORD feature bits (see #0083) 80h WORD user determined preference field 82h WORD memory required for driver use 84h WORD # of timer tick callbacks per second 86h WORD max # of tones (voices, partials) SeeAlso: #0076,#0084,#0086 Bitfields for MIDI feature bits: Bit(s) Description (Table 0083) 0-3 reserved for GM extensions 4 Transmitter/Receiver only 5 Patches preloaded 6 MIDI receive has time stamp 8 MIDI interrupt driven input supported 9 MIDI polled input supported 10 MIDI remote patches supported Format of MIDI Service structure: Offset Size Description (Table 0084) 00h 4 BYTEs name of the structure ("MIDS") 04h DWORD structure length 08h 16 WORDs patches loaded table bit field 28h 16 BYTEs for future expansion ---entry points (details???)--- 38h DWORD device check 11h return available tones 12h return TRUE/FALSE if patch is understood 13h set preference 14h allow/disallow voice stealing 15h get FIFO sizes 16h get DMA,IRQ 17h get IO address 18h get mem address 19h get mem free 80h-.. vendors can add DevChks above 0x80 3Ch DWORD global reset 40h DWORD MIDI msg 44h DWORD poll MIDI 48h DWORD preload patch 4Ch DWORD unload patch 50h DWORD timer tick 54h DWORD get last error 01h unsupported feature/function 02h unknown patch type (see #0085) 03h all tones are used 04h messages are out of sync 05h an incoming patch was incomplete 06h an incoming patch couldn't be stored 07h had to drop an incoming byte 08h driver is failing a patch download 80h-.. vendors specific errors 58h DWORD Patch Block free callback 5Ch DWORD MIDI byte avail. callback SeeAlso: #0080,#0088 (Table 0085) Values for MIDI Registered Patch Types: 10h OPL2 11h OPL3 Format of Volume Info Structure: Offset Size Description (Table 0086) 00h 4 BYTEs name of the structure ("VOLI") 04h DWORD structure length (00000092h) 08h DWORD driver software version [00000001h] 0Ch 32 BYTEs vendor name, etc. (ASCIZ string) 2Ch 32 BYTEs vendor product name 4Ch 32 BYTEs vendor chip/hardware description 6Ch BYTE installed board number (0 for 1st/only board) 6Dh 3 BYTEs unused data (0) 70h 24 BYTEs text name of the mixer channel 88h DWORD features bits (see #0087) 8Ch WORD minimum volume setting 8Eh WORD maximum volume setting 90h WORD attenuation/gain crossover SeeAlso: #0076,#0088 Bitfields for Volume feature bits: Bit(s) Description (Table 0087) 0 Stereo Volume control available 2 Low Pass Filter is available 3 High Pass Filter is available 4 Parametric Tone Control is available 5 selectable output paths 8 Azimuth Field positioning supported 9 Phi Field positioning supported 10-30 unused??? 31 Master Volume device Format of Volume Services Structure: Offset Size Description (Table 0088) 00h 4 BYTEs name of the structure ("VOLS") 04h DWORD structure length (00000038h) 08h 16 BYTEs 16 bytes for future expansion (0) ---entry points (details???)--- 18h DWORD device check 0011h filter range 0012h filter setting 0013h filter current 0014h tone range 0015h tone setting 0016h tone current 0017h path 0018h get IO address 0080h-.. vendors can add DevChks above 0x80 1Ch DWORD set vol to an absolute setting 01h User master volume setting 02h application master volume setting 20h DWORD set 3D volume 24h DWORD tone control 28h DWORD filter control 2Ch DWORD output path 30h DWORD reset channel 34h DWORD get last error 01h unsupported feature/function 02h out of range parameter value 80h+ vendor-specific errors SeeAlso: #0080,#0084 --------s-104F13BX0003----------------------- INT 10 - VESA Audio Interface - OPEN DEVICE AX = 4F13h BX = 0003h CX = handle DX = API set (16/32-bit) SI = segment ??? Return: AL = 4Fh if function supported AH = status 00h successful SI:CX -> memory ??? 01h failed SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0002h,AX=4F13h/BX=0004h --------s-104F13BX0004----------------------- INT 10 - VESA Audio Interface - CLOSE DEVICE AX = 4F13h BX = 0004h CX = handle Return: AL = 4Fh if function supported AH = status 00h successful 01h failed SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0003h,AX=4F13h/BX=0005h --------s-104F13BX0005----------------------- INT 10 - VESA Audio Interface - UNINSTALL DRIVER AX = 4F13h BX = 0005h Return: AL = 4Fh if function supported AH = status 00h successful 01h failed SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0006h --------s-104F13BX0006----------------------- INT 10 - VESA Audio Interface - DRIVER CHAIN/UNCHAIN AX = 4F13h BX = 0006h Return: AL = 4Fh if function supported AH = status 00h successful 01h failed SeeAlso: AX=4F13h/BX=0000h,AX=4F13h/BX=0005h --------V-104F4D----------------------------- INT 10 - VESA - VIDEO CURSOR INTERFACE REQUEST AX = 4F4Dh BX = number of bytes available for VCI use DS:0000h -> buffer for VCI ES:DI -> VCI driver callback function Return: AL = 4Fh if supported AH = status 00h successful BX = number of bytes used by VCI ES:DI -> VCI request handler 01h failed Desc: allow the VESA BIOS Extensions to cooperate with a pointing-device (typically mouse) driver --------V-104FFF----------------------------- INT 10 - VESA SuperVGA BIOS - Everex - TURN VESA ON/OFF AX = 4FFFh DL = new state (00h off, 01h on) Return: AX = 0000h if successful --------V-104FFF----------------------------- INT 10 - Diamond Stealth 24 - SET/RESET DUAL DISPLAY MODE AX = 4FFFh BX = dual display mode 00h reset 01h set dual display, 32KB VGA test 02h set dual display, 64KB VGA test Return: AX = 4F00h if successful BX = number of scanlines off screen for test mode --------U-1050------------------------------- INT 10 - SCROLOCK.COM - INSTALLATION CHECK AH = 50h Return: BX = 1954h if installed AL = 00h if inactive, nonzero if active Program: SCROLOCK is a utility supplied with System Enhancement Associates' ARC SeeAlso: AH=51h --------J-105000----------------------------- INT 10 - VIDEO - AX PC - SET SCREEN COUNTRY CODE AX = 5000h BX = country code 0001h USA (English), 0051h Japan Return: AL = status 00h successful 01h bad country code 02h other error SeeAlso: AX=5001h,INT 16/AX=5000h --------J-105001----------------------------- INT 10 - VIDEO - AX PC - GET SCREEN COUNTRY CODE AX = 5001h Return: AL = status 00h successful BX = country code 02h error SeeAlso: AH=00h,AX=5000h,INT 16/AX=5001h,INT 21/AH=38h --------V-105049----------------------------- INT 10 - VIDEO - SCREENR v1.55+ - API AX = 5049h ('PI') BX = function 0000h installation check 0001h lock mode 0002h unlock mode 0003h lock palette 0004h unlock palette Return: AX = 0000h if installed BX = TSR version (BH=major,BL=minor) CL = mode locking status 00h mode not locked 01h mode locked: INT 10/AH=00h disabled CH = palette locking status 00h palette not locked 01h palette locked, the following functions are disabled: AX=1000h, AX=1001h, AX=1002h, AX=1010h, AX=1012h Program: SCREENR is a TSR supplied with Patrick Ibbetson's SCREEN display utility. Index: installation check;SCREENR --------U-1051------------------------------- INT 10 - SCROLOCK.COM - ENABLE/DISABLE AH = 51h AL = state 00h disable nonzero enable Program: SCROLOCK is a utility supplied with System Enhancement Associates' ARC SeeAlso: AH=50h"SCROLOCK" --------J-105100----------------------------- INT 10 - VIDEO - AX PC - REGISTER EXTERNAL CHARACTER AX = 5100h BH = character width in bits (10h) BL = character height (10h) DX = character code (DH = F0h-F3h, DL=40h-7Eh,80h-FCh) ES:BP -> character bitmap Return: AL = status (00h successful, 01h failed) SeeAlso: AX=5101h,INT 1F --------J-105101----------------------------- INT 10 - VIDEO - AX PC - READ CHARACTER AX = 5101h BH = character width in bits BL = character height DX = character code (DH = 00h if 8-bit character) ES:BP -> buffer for character bitmap Return: AL = status (00h successful, 01h failed) SeeAlso: AH=09h,AX=5100h --------J-105200----------------------------- INT 10 - VIDEO - AX PC - SET VIRTUAL TEXT RAM BUFFER AX = 5200h BX = segment of buffer SeeAlso: AX=5201h --------J-105201----------------------------- INT 10 - VIDEO - AX PC - GET VIRTUAL TEXT RAM BUFFER AX = 5201h Return: BX = segment of buffer or 0000h if failed SeeAlso: AX=8300h,AH=FEh ----------1053------------------------------- INT 10 - Show Partner F/X v3.6 - START PRESENTATION AH = 53h DS:DX -> ASCIZ name of presentation file (no path, extension forced to .PR2) Return: ??? SeeAlso: AH=55h ----------1055------------------------------- INT 10 - Show Partner F/X v3.6 - UNINSTALL AH = 55h Return: FXSHOW.EXE removed from memory SeeAlso: AH=53h --------V-105555----------------------------- INT 10 - VIDEO - ATI EGA/VGA Wonder Super Switch - INSTALLATION CHECK AX = 5555h Return: AX = AAAAh if installed BX:CX -> ??? routine in SMS.COM resident portion -> data area (see #0089) in VCONFIG Program: Super Switch (SMS.COM) is a video mode switch program supplied with ATI EGA Wonder. It also maps video mode 08h to 27h or 23h. SeeAlso: INT 10/AH=00h,INT 14/AX=AA01h,INT 2F/AX=6400h Index: screen saver;ATI Wonder SMS.COM Format of ATI Super Switch data area: Offset Size Description (Table 0089) 00h DWORD original INT 09 vector 04h DWORD original INT 10 vector 08h DWORD original INT 1C vector 0Ch WORD screen saver state, 0=off, 1=on 0Eh WORD blanking interval in clock ticks --------V-105F00----------------------------- INT 10 - Chips & Technologies Extended BIOS - RETURN CHIP INFORMATION AX = 5F00h Return: AL = 5Fh function supported BL = chip type (see #0090) BH = video memory size (00h 256KB, 01h 512KB, 02h 1MB) CX = miscellaneous information (see #0091) SeeAlso: AX=5F01h Bitfields for Chips&Technologies chip type: Bit(s) Description (Table 0090) 7-4 chip type 0000: 82c451 0001: 82c452 0010: 82c455 0011: 82c453 0101: 82c456 0110: 82c457 0111: F65520 1000: F65530 1100: F65535/F65545 ??? 1101: F65540 3-0 revision number Bitfields for Chips&Technologies miscellaneous information: Bit(s) Description (Table 0091) 0 DAC size (0=6-bit, 1=8-bit) 1 system type (0=PC/AT, 1=PS/2) 2 extended text modes supported by BIOS 3 reserved 4 extended graphics modes supported by BIOS 5 reserved 6 BIOS supports graphics cursor 7 BIOS supports anti-aliased font 8 BIOS supports pre-programmed emulation 9 BIOS supports auto emulation 10 BIOS supports variable mode set at cold boot 11 BIOS supports variable mode set on warm boot 12 BIOS supports emulation mode set at cold boot 13 BIOS supports emulation mode set on warm boot 14-15 reserved --------V-105F00----------------------------- INT 10 - VIDEO - Realtek RTVGA - RETURN CHIP VERSION AX = 5F00h Return: AH = 00h, if successful AL = chip version (the same value that VTEST.EXE reads) 00h RTG3103??? 01h RTG31030/RTG3105 02h RTG3106??? 3Fh non-Realtek chip BUG: in v3.C10, AX=5F00h on return due to improper stack restoration code SeeAlso: AX=5F01h"RTVGA" --------V-105F01----------------------------- INT 10 - Chips & Technologies Extended BIOS - SET PREPROGRAMMED EMULATION AX = 5F01h BL = emulation type (see #0092) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F00h,AX=5F02h,AH=FFh"Oak" (Table 0092) Values for Chips&Technologies emulation type: 00h,01h reserved 02h CGA 03h MDA 04h Hercules 05h EGA 06h VGA --------V-105F01----------------------------- INT 10 - VIDEO - Realtek RTVGA - WRITE RTVGA BIOS STRING TO DESTINATION AX = 5F01h ES:DI -> zero-filled buffer for BIOS ID string Return: AH = 00h if successful ES:DI -> ASCII signature "REALTEK VGA BIOS Version 3C.10" BUG: in v3.C10, AX=5F01h on return due to improper stack restoration code SeeAlso: AX=5F00h"RTVGA",AX=5F02h"RTVGA" --------V-105F02----------------------------- INT 10 - Chips & Technologies Extended BIOS - AUTO EMULATION CONTROL AX = 5F02h BL = new state of autmatic emulation (00h enabled, 01h disabled) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F01h,AX=5F03h --------V-105F02----------------------------- INT 10 - VIDEO - Realtek RTVGA - RETURN RTVGA ON-BOARD MEMORY SIZE AX = 5F02h Return: AH = 00h, if successful AL = on-board memory size (00h = 256K, 01h = 512K, 02h = 768K, 03h = 1024K) BUG: in v3.C10, AX=5F02h on return due to improper stack restoration code SeeAlso: AX=5F01h"RTVGA",AX=5F03h"RTVGA" --------V-105F03----------------------------- INT 10 - VIDEO - Realtek RTVGA - SET ??? AX = 5F03h BL = 0-3 (???) Return: AH = 00h if successful BUG: in v3.C10, AX=5F03h on return due to improper stack restoration code SeeAlso: AX=5F02h"RTVGA" --------V-105F03----------------------------- INT 10 - Chips & Technologies Extended BIOS - SET POWER-ON VIDEO CONDITIONS AX = 5F03h BL = configuration 00h power-up display mode CL = display mode CH = mode (see #0093) 01h power-up emulation mode CL = emulation mode (see #0092) CH = permanence (00h reset after next boot, 01h until changed) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F02h,AX=5F03h/BL=01h,AX=5F90h Bitfields for Chips&Technologies display mode: Bit(s) Description (Table 0093) 1-0 scanlines (00 = 200, 01 = 350, 10 = 400) 7 persistence (0 reset on next boot, 1 until changed) --------V-105F03BL01------------------------- INT 10 - Chips & Technologies Extended BIOS - SET POWER-ON EMULATION MODE AX = 5F03h BL = 01h CL = emulation mode CH = mode bit 7 persistence (0 reset on next boot, 1 until changed) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F02h,AX=5F03h/BL=00h,AX=5F90h --------V-105F10----------------------------- INT 10 - Chips & Technologies Extended BIOS - ??? AX = 5F10h DX = ??? Return: DX = ??? --------V-105F50----------------------------- INT 10 - Chips & Technologies Extended BIOS - GET LAPTOP DISPLAY STATUS AX = 5F50h Return: DL = display status (see #2710) Note: this call can be used on Toshiba laptops since ~1995 instead of INT 42/AX=7503h which is no longer supported with the F655xx chips SeeAlso: INT 42/AX=7503h Bitfields for display status: Bit(s) Description (Table 2710) 7-4 always 0 ??? 3 1: both displays active (bit 1 also set) 2 1: normal (monochrome display only), 0: inverse or color 1 1: internal display active, 0: external only 0 always set ??? --------V-105F51----------------------------- INT 10 - Chips & Technologies Extended BIOS - SET DISPLAY STATUS ??? AX = 5F51h BX = ??? Return: nothing --------V-105F5EBL00------------------------- INT 10 - Chips & Technologies Extended BIOS - SET ??? AX = 5F5Eh BL = 00h or 01h Return: nothing --------V-105F------------------------------- INT 10 - Chips & Technologies Extended BIOS - SAVE/RESTORE SUPERVGA STATE AH = 5Fh AL = subfunction 90h determine size of save buffer 91h save state 92h restore state CX = state mask (see #0094) ES:BX -> save buffer (subfunctions 91h,92h only) Return: AL = 5Fh if function supported ---subfunction 90h--- BX = number of 64-byte blocks required ---subfunction 92h--- buffer at ES:BX filled SeeAlso: AH=1Ch,AX=5F03h Bitfields for Chips&Technologies state mask: Bit(s) Description (Table 0094) 0 video hardware 1 BIOS data state 2 DAC state 15 type (0 all state info, 1 SuperVGA state only) --------V-1060------------------------------------ INT 10 - HUNTER 16 - SET GRAPHICS FONT AH = 60h AL = new font bit 7 output characters in reverse video bits 0-6 font number (see #0108 at AH=77h) Return: BH = cell width BL = cell height Desc: select the font to use for output in mode 6; this can be used to mix fonts on the screen Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk. SeeAlso: AH=04h"HUNTER",AH=73h"HUNTER",AH=77h"HUNTER" --------V-1061------------------------------------ INT 10 - HUNTER 16 - MOVE CURSOR TO GRAPHICS CO-ORDINATES AH = 61h CX = column DX = row Note: this function is only valid in graphics modes SeeAlso: AH=62h --------V-1062------------------------------------ INT 10 - HUNTER 16 - GET CURSOR POSITION IN GRAPHICS CO-ORDINATES AH = 62h Return: CX = column DX = row Note: this function is only valid in graphics modes SeeAlso: AH=61h --------V-1063------------------------------------ INT 10 - HUNTER 16 - SET CONTRAST AH = 63h AL = contrast (0..127) Desc: set the LCD screen contrast to improve visibility SeeAlso: AH=64h,AH=75h --------V-1064------------------------------------ INT 10 - HUNTER 16 - SET BACKLIGHT LEVEL AH = 64h AL = level (0..15) Desc: set the LCD backlight level to improve visibility in bad lighting SeeAlso: AH=63h,AH=65h,AH=74h,AH=78h"HUNTER",INT 15/AH=74h --------V-106500---------------------------------- INT 10 - HUNTER 16 - GET BACKLIGHT TIMEOUT AX = 6500h Return: BX = timeout in seconds (0-300) Desc: returns the time after which the backlight will turn off SeeAlso: AH=63h,AH=64h,AX=6501h,INT 15/AH=74h --------V-106501---------------------------------- INT 10 - HUNTER 16 - SET BACKLIGHT TIMEOUT AX = 6501h BX = timeout in seconds (0-300) Desc: set the idle time after which the backlight will turn off SeeAlso: AH=64h,AX=6500h --------V-1066------------------------------------ INT 10 - HUNTER 16 - SPLIT DISPLAY AH = 66h AL = control bits (see #0095) BH = top row of lower section of LCD (0..7) BL = top row of lower section of the virtual screen (0..24) Desc: split the LCD screen horizontally into two parts; each part may be individually scrollable or fixed. Note: the Hunter 16 has a 240x64 LCD display which serves as a window into a 640x200 virtual screen Bitfields for HUNTER 16 control bits: Bit(s) Description (Table 0095) 0-1 01: no split, 10: allow split 2 allow scrolling the upper part 3 allow scrolling the lower part --------V-106A00BX0000----------------------- INT 10 - Direct Graphics Interface Standard (DGIS) - INQUIRE AVAILABLE DEVICES AX = 6A00h BX = 0000h CX = 0000h DX = buffer length (may be 0) ES:DI -> buffer Return: BX = number of bytes stored in buffer CX = bytes required for all descriptions (0 if no DGIS) Note: buffer contains descriptions and addresses of DGIS-compatible display(s) and printer(s) SeeAlso: AX=6A02h --------V-106A01CX0000----------------------- INT 10 - Direct Graphics Interface Standard (DGIS) - REDIRECT CHARACTER OUTPUT AX = 6A01h CX = 0000h ES:DI = address of device to send INT 10 output to Return: CX = 0000h output could not be redirected else INT 10h output now routed to requested display SeeAlso: AX=6A02h --------V-106A02----------------------------- INT 10 - DGIS - INQUIRE INT 10 OUTPUT DEVICE AX = 6A02h ES:DI = 0000h:0000h Return: ES:DI = 0000h:0000h if current display is non-DGIS else address of the current DGIS INT 10 display SeeAlso: AX=6A00h,AX=6A01h --------V-106E00----------------------------- INT 10 - Paradise VGA internal - GET ??? AX = 6E00h Return: BX = 5744h ('WD') if supported DH:AH:AL = last three ASCII digits of ROM serial number CL = ??? CH = ??? SeeAlso: AX=6E04h,AX=6E05h --------V-106E04----------------------------- INT 10 - Paradise VGA internal - GET SCREEN SIZE AND ??? AX = 6E04h Return: BX = screen width (columns) CX = screen height (lines) AH = ??? (05h or FFh) AL = ??? (04h or video mode) SeeAlso: AX=6E00h,AX=6E05h --------V-106E05----------------------------- INT 10 - Paradise VGA internal - SET MODE AX = 6E05h BL = mode Note: like AH=00h, AL=BL. SeeAlso: AH=00h,AX=6E00h,AX=6E04h,AX=6F05h --------V-106F00----------------------------- INT 10 - HP Vectra EX-BIOS - INSTALLATION CHECK AX = 6F00h BX <> 4850h (usually set to 0000h for simplicity) Return: BX = 4850h ('HP') indicates HP Extended BIOS video functions present AX destroyed SeeAlso: AX=6F00h"Video7",AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h SeeAlso: INT 14/AX=6F00h,INT 16/AX=6F00h,INT 17/AX=6F00h,INT 33/AX=6F00h --------V-106F00BX0000----------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA - INSTALLATION CHECK AX = 6F00h BX = 0000h Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h --------V-106F01----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP EX-BIOS - GET MONITOR INFO AX = 6F01h Return: AL = monitor type code (HP,VEGA VGA only) (see #0096) AH = status register information (see #0097) CL = current value of Extended Control register (HP Ext BIOS, and only if AL=41h) (see #0098) Notes: bits 0-3 are the same as the EGA/VGA status register bits 0-3 supported by original HP Vectra AT and by ES/QS/RS series Vectras (Table 0096) Values for monitor type code (HP Extended BIOS): 00h non-HP card with ROM and possibly its own INT 10h driver 41h MultiMode video display adapter 42h-44h reserved 45h industry standard monochrome display adapter 46h industry standard color display adapter 51h reserved Bitfields for status register information: Bit(s) Description (Table 0097) 0 display enable 0 = display enabled 1 = vertical or horizontal retrace in progress 1 light pen flip flop set 2 light pen switch activated 3 vertical sync 4 monitor resolution 0 = high resolution (>200 lines) 1 = low resolution (<=200 lines) 5 display type (0 = color, 1 = monochrome) 6,7 diagnostic bits Note: bits 0-3 are the same as the EGA/VGA status register bits 0-3 --------V-106F02----------------------------- INT 10 - HP Vectra EX-BIOS - SET MONITOR INFO AX = 6F02h BL = new value for extended control register (see #0098) Return: AX,BL destroyed Notes: this function is only valid when an HP MultiMode Video Display Adapter is installed the Extended Control register is at I/O address 3DDh SeeAlso: AX=6F01h,AX=6F03h Bitfields for HP Vectra extended control register: Bit(s) Description (Table 0098) 0 screen resolution (0 = 200 lines, 1 = 400 lines) 1 underline enable (if set, 'blue' of fg color = underline) 2 font (0 = Standard-8, 1 = HP-Roman-8) 3 memory disabled for CPU access 4 allow access to full 32K memory instead of wrapping at 16K 5 select second 16K page instead of first 6,7 unused --------V-106F03----------------------------- INT 10 - HP Vectra EX-BIOS - MODIFY MONITOR INFO AX = 6F03h BH = exclude mask (set bits are not modified) BL = new values for bits indicated by BH (see #0098) Return: AX destroyed Notes: this function is only valid when an HP MultiMode Video Display Adapter is installed supported by original HP Vectra AT and by ES/QS/RS series Vectras SeeAlso: AX=6F01h,AX=6F02h --------V-106F04----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP Vectra - GET MODE AND SCREEN RESOLUTION AX = 6F04h Return: AL = current video mode (see #0099) BX = horizontal columns (text) or pixels (graphics) CX = vertical columns (text) or pixels (graphics) SeeAlso: AX=6F05h --------V-106F05----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA EXTENDED EGA/VGA,HP Vectra - SET VIDEO MODE AX = 6F05h BL = mode (see #0099) Return: AX,BL destroyed Notes: also supported by the HP Vectra Extended BIOS on the original HP Vectra AT and by ES/QS/RS series Vectras on the HP Vectra, this function rather than AH=00h must be used to return to an IBM-standard mode after setting an HP-specified mode from 08h to 0Fh. SeeAlso: AH=00h,AX=0070h,AX=007Eh,AX=6F04h (Table 0099) Values for Video7/VEGA video mode: text/ text pixel pixel colors disply scrn system grph resol box resolution pages addr 00h-13h = standard IBM modes (see #0009 at AH=00h) 08h = T 80x27 . . mono . . HP MultiMode Video 09h = T 80x27 . . . . . HP MultiMode Video 0Ah = T 40x27 . . mono . . HP MultiMode Video 0Bh = T 40x27 . . . . . HP MultiMode Video 0Ch = reserved HP MultiMode Video 0Dh = G . . 640x400 . . . HP MultiMode Video 0Eh = G . . 320x400 . . . HP MultiMode Video 0Fh = G . . 320x400 . . . HP MultiMode Video 40h = T 80x43 8x8 . . . . Video7/VEGA VGA 41h = T 132x25 8x14 . . . . Video7/VEGA VGA 42h = T 132x43 8x8 . . . . Video7/VEGA VGA 43h = T 80x60 8x8 . . . . Video7/VEGA VGA 44h = T 100x60 8x8 . . . . Video7/VEGA VGA 45h = T 132x28 8x8 . . . . Video7/VEGA VGA 60h = G . . 752x410 16 . . Video7 VGA, VEGA VGA 61h = G . . 720x540 16 . . Video7 VGA, VEGA VGA = G . . 720x540 16 . . Northgate, Headland 1024i 62h = G . . 800x600 16 . . Video7 VGA, VEGA Ext EGA = G . . 800x600 16 . . Headland 1024i 63h = G . . 1024x768 2 . . Video7 VGA 64h = G . . 1024x768 4 . . Video7 VGA 65h = G . . 1024x768 16 . . Video7 VGA, VEGA Ext EGA = G . . 1024x768 16 . . Headland 1024i 66h = G . . 640x400 256 . . Video7 VGA, VEGA Ext VGA = G . . 640x400 256 . . Northgate, Headland 1024i 67h = G . . 640x480 256 . . Video7 VGA, VEGA Ext VGA = G . . 640x480 256 . . Headland 1024i 68h = G . . 720x540 256 . . Video7 VGA, VEGA Ext VGA = G . . 720x540 256 . . Headland 1024i 69h = G . . 800x600 256 . . Video7 VGA, VEGA Ext VGA = G . . 800x600 256 . . Headland 1024i 70h = G . . 752x410 16gray . . Video7 VGA, VEGA VGA 71h = G . . 720x540 16gray . . Video7 VGA, VEGA VGA 72h = G . . 800x600 16gray . . Video7 VGA 73h = G . . 1024x768 2gray . . Video7 VGA 74h = G . . 1024x768 4gray . . Video7 VGA 75h = G . . 1024x768 16gray . . Video7 VGA 76h = G . . 640x400 256gray . . Video7 VGA 77h = G . . 640x480 256gray . . Video7 VGA 78h = G . . 720x540 256gray . . Video7 VGA 79h = G . . 800x600 256gray . . (future) SeeAlso: AH=00h,AX=0070h,AX=007Eh,AX=6F04h Index: video modes;Video 7|video modes;VEGA|video modes;Headland --------V-106F06----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA - SELECT AUTOSWITCH MODE AX = 6F06h BL = Autoswitch mode select 00h select EGA/VGA-only modes 01h select Autoswitched VGA/EGA/CGA/MGA modes 02h select 'bootup' CGA/MGA modes BH = enable/disable (00h enable, 01h = disable selection) --------V-106F07----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA - GET VIDEO MEMORY CONFIGURATION AX = 6F07h Return: AL = 6Fh AH = memory configuration bits 0-6 = number of 256K blocks of video memory bit 7 = DRAM/VRAM (0: DRAM, 1: VRAM) BH = chip revision (SR8F) (S/C Chip in VEGA VGA) BL = chip revision (SR8E) (G/A Chip in VEGA VGA) CX = 0000h SeeAlso: AH=12h/BL=10h --------V-1070------------------------------- INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF VIDEO RAM AH = 70h Return: AX:BX -> WORD containing green plane's offset AX:CX -> WORD containing green plane's segment AX:DX -> WORD containing segment of red (offset 0) and blue (offset 4000) planes SeeAlso: AH=71h --------V-1070------------------------------------ INT 10 - HUNTER 16 - DRAW ELLIPSE/CIRCLE AH = 70h DS:BX -> control block (see #0100) Desc: Draws a circle or ellipse. Only valid in graphics modes. Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk. SeeAlso: AH=71h"HUNTER" Format of HUNTER 16 control block: Offset Size Description (Table 0100) 00h WORD center X co-ordinate 02h BYTE center Y co-ordinate 03h WORD radius in pixels 05h BYTE color (00h white, 01h black, FFh invert) 06h BYTE aspect ratio x:x (1-127) 07h BYTE aspect ratio y:y (1-127) --------V-107000BX0000----------------------- INT 10 - Everex Extended Video BIOS - RETURN EMULATION STATUS AX = 7000h BX = 0000h Return: AL = 70h if Trident-based Everex card CL = monitor type (see #0101) CH = feature bits (see #0102) DX = video board info bits 4-15: board ID model (see #0103) bits 0-3: board ID revision DI = BCD BIOS version number SeeAlso: AX=5F01h,AH=FF"Oak" (Table 0101) Values for Everex monitor type: 00h mono 01h CGA 02h EGA 03h digital multifrequency 04h IBM PS/2 05h IBM 8514 06h SuperVGA 07h analog multifrequency 08h super multifrequency Bitfields for Everex feature bits: Bit(s) Description (Table 0102) 7-6 memory size 00 = 256K 01 = 512K 10 = 1024K 11 = 2048K 5 special oscillator present 4 VGA protect enabled 0 6845 emulation (Table 0103) Values for board model for Trident-based Everex cards: 0236h Ultragraphics II 0620h Vision VGA 0673h EVGA 0678h Viewpoint --------V-107000BX0004----------------------- INT 10 - Everex Extended Video BIOS - GET PAGING FUNCTION POINTER FOR CURR MODE AX = 7000h BX = 0004h Return: ES:DI -> FAR paging function (call with DL = page to set) Note: the word preceding ES:DI is the length of the function in bytes, and the last byte of the function is a FAR return instruction. SeeAlso: AX=4F05h,AX=7000h/BX=0000h,AX=7000h/BX=0005h --------V-107000BX0005----------------------- INT 10 - Everex Extended Video BIOS - GET SUPPORTED MODE INFO AX = 7000h BX = 0005h CL = maximum number of modes to get info for CH = mode type to get info for (see #0104) DL = monitor type to get info for ES:DI -> buffer for mode info (see #0105) Return: CL = total number of modes fitting criteria CH = size of each info record SeeAlso: AX=7000h/BX=0000h,AX=7000h/BX=0004h (Table 0104) Values for Everex mode type: 00h all modes 01h monochrome text modes 02h color text modes 03h four-color CGA graphics modes 04h two-color CGA graphics modes 05h 16-color graphics modes 06h 256-color graphics modes Format of Everex mode information record: Offset Size Description (Table 0105) 00h BYTE mode number (bit 7 set if extended mode) 01h BYTE mode type (see #0104) 02h BYTE info bits (see #0106) 03h BYTE font height 04h BYTE text columns on screen 05h BYTE text rows on screen 06h WORD number of scan lines 08h BYTE color information bits 7-4 reserved 3-0 bits per pixel Bitfields for Everex info bits: Bit(s) Description (Table 0106) 7,6 reserved 5 monochrome mode 4 interlaced display 3 requires special oscillator 2,1 memory required (00 = 256K, 01 = 512K, 10 = 1024K, 11 = 2048K) 0 reserved --------V-1071------------------------------- INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF INCRAM AH = 71h Return: AX:BX -> WORD containing segment address of INCRAM AX:CX -> WORD containing offset of INCRAM SeeAlso: AH=70h"TANDY" --------V-1071------------------------------------ INT 10 - HUNTER 16 - DRAW LINE/BOX AH = 71h DS:BX -> control block (see #0107) Desc: Draws a line or box. Only valid in graphics modes. SeeAlso: AH=70h"HUNTER" Format of HUNTER 16 control block: Offset Size Description (Table 0107) 00h WORD left edge X co-ordinate 02h BYTE lower edge Y co-ordinate 03h WORD right edge X co-ordinate 05h BYTE upper edge Y co-ordinate 06h BYTE color (00h white, 01h black, FFh invert) 07h BYTE type (00h line, 01h box) 08h BYTE if non-zero (and type is BOX) fill with color --------V-1072------------------------------- INT 10 - VIDEO - TANDY 2000 only - SCROLL RIGHT PART OR ALL OF SCREEN AH = 72h AL = number of columns to shift scroll area, 00h to clear entire area BH = new attributes for blanked columns at left CH,CL = row, column of upper left corner of scroll area DH,DL = row, column of lower right corner of scroll area SeeAlso: AH=06h,AH=07h,AH=73h"TANDY",INT 15/AH=12h/BH=05h --------V-1072------------------------------------ INT 10 - HUNTER 16 - SELECT TEXT-MODE INVERSE VIDEO MECHANISM AH = 72h AL = mechanism to use 00h do not use inverse video 01h emulate MDA. Display attribute 07h is normal video and 70h is inverse video. 02h use inverse video if background is non-black. 03h use inverse video for high intensity text. 04h use inverse video for text with background intensity greater than foreground intensity. 05h use inverse video for text with background color other than black or high intensity foreground. SeeAlso: AH=70h"HUNTER",AH=71h"HUNTER" --------V-1073------------------------------- INT 10 - VIDEO - TANDY 2000 only - SCROLL LEFT PART OR ALL OF SCREEN AH = 73h AL = number of columns to shift scroll area, 00h to clear entire area BH = new attributes for blanked columns at right CH,CL = row, column of upper left corner of scroll area DH,DL = row, column of lower right corner of scroll area SeeAlso: AH=06h,AH=07h,AH=72h"TANDY",INT 15/AH=12h/BH=05h --------V-1073------------------------------------ INT 10 - HUNTER 16 - SELECT TEXT FONT AH = 73h AL = new font 00h 7x7 in a 8x8 cell 01h 5x7 in a 6x8 cell 06h 3x5 in a 4x6 cell Retuen: BH = cell width BL = cell height SeeAlso: AH=60h"HUNTER",AH=77h"HUNTER" --------V-1074------------------------------------ INT 10 - HUNTER 16 - SET LCD WINDOWS POSITION AH = 74h DH = row (0..24) DL = column (0..79) Desc: set the position in the virtual screen being displayed in the LCD screen. If Split Screen (INT 10/AH=66h) is used, this call sets the position for the window which has the cursor. SeeAlso: AH=66h"HUNTER",AH=75h,AH=76h --------V-1075------------------------------------ INT 10 - HUNTER 16 - SET ZOOM AH = 75h AL = new Zoom state (00h off, nonzero on) SeeAlso: AH=74h,AH=76h --------V-1076------------------------------------ INT 10 - HUNTER 16 - LOOKING KEYS AH = 76h AL = Action 00h home the window 01h move up one line 02h move down one line 03h move left one character 04h move right one character 05h flip window to other side of virtual screen Desc: moves the displayed screen around the virtual screen SeeAlso: AH=74h,AH=75h --------V-1077------------------------------------ INT 10 - HUNTER 16 - GET GRAPHICS FONT AH = 77h Return: AL = font number (see #0108) SeeAlso: AH=60h"HUNTER",AH=73h"HUNTER" (Table 0108) Values for HUNTER 16 graphics font number: 00h 7x7 in a 8x8 cell 01h 5x7 in a 6x8 cell 02h 7x9 in a 8x10 cell 03h 14x9 in a 16x10 cell 04h 7x18 in a 8x20 cell 05h 14x18 in a 16x20 cell 06h 3x5 in a 4x6 cell Note: size is X * Y --------V-1078------------------------------------ INT 10 - HUNTER 16 - TURN BACKLIGHT ON/OFF AH = 78h AL = new state of backlight (00h on, 01h off) SeeAlso: AH=64h,INT 15/AH=74h --------V-107F------------------------------- INT 10 - Paradise SVGA - WD90C24 INSTALLATION CHECK AH = 7Fh Return: AX = 1234h if WD90C24 chip installed --------V-107F00----------------------------- INT 10 - SOLLEX SuperVGA - GET EXTENSIONS INFO AX = 7F00h Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful ES:DI -> info structure (see #0109) 01h failed Program: the SOLLEX (Smos videO controLLer EXtensions) SuperVGA functions are an extension to the VESA SuperVGA BIOS Extensions (see AX=4F00h) by Seiko Epson Corporation intended to provided a standardized interface to SuperVGA functionality not addressed by the VESA standard SeeAlso: AX=4F00h Format of SOLLEX SuperVGA info structure: Offset Size Description (Table 0109) 00h DWORD pointer to VESA function dispatch table 04h DWORD pointer to SOLLEX function dispatch table 08h DWORD pointer to VESA SuperVGA info (see #0063 at AX=4F00h) 0Ch DWORD pointer to mode info structure table, consisting of alternating ResInfo (see #0110) and VESA mode information (see #0065 at AX=4F01h) blocks, terminated with an FFFFh word 10h DWORD pointer to font info structure table (see #0111) 14h WORD high resolution crystal frequency in Hz (0000h = not present) 16h DWORD pointer to ASCIZ ID string 1Ah DWORD pointer to timeout reset table array of bytes, each a multiple of the minimum time increment 1Eh WORD minimum time increment in timer ticks 20h BYTE inverse options supported bit 0: inverse supported bits 1-7: reserved 21h BYTE normal color value 22h BYTE inverse color value 23h WORD port to be accessed for normal/inverse settings 25h WORD type of interface chip (currently undefined) 27h WORD program operational mode bits 1-0: 00 no preference 01 terse (minimum detail in program messages) 10 verbose 11 use menus if supported, verbose mode otherwise bits 7-2: reserved 29h WORD SOLLEX specification version 2Bh WORD version of VESA/SOLLEX implementation 2Dh DWORD offset to relocatable portion of SOLLEX extensions (for CONFIG) 2Eh DWORD offset to unused section of the extensions ROM 31h 16 BYTEs reserved Note: all DWORD pointers initially require segment fixups; if the segment is 0000h, it should be changed to the returned ES, otherwise it may be assumed to be correct Format of SOLLEX SuperVGA ResInfo: Offset Size Description (Table 0110) 00h WORD 16-bit mode number 02h WORD adapter type (00h VGA, 01h EGA, 02h CGA, 03h MDA) 04h WORD display info (see #0114) 06h DWORD pointer to video parameter table 0Ah BYTE replacement entry in master Video Parameter 0Bh BYTE mode requested for mode set by BIOS 0Ch DWORD pointer to LoadReg table 10h BYTE index into table of clock values (see #0112) Format of SOLLEX SuperVGA font info table [array] entry: Offset Size Description (Table 0111) 00h BYTE required font height 01h BYTE parameter to load text mode font 02h BYTE parameter to load graphics mode font (Table 0112) Values for SOLLEX SuperVGA clock value index: 00h 25 MHz 01h 28 MHz 02h PCLK 03h 31.5 MHz (VESA 640x480) 04h reserved 05h 16 MHz (EGA) 06h PCLK 07h 24 MHz (EGA) 08h 25 MHz 09h 28 MHz 0Ah 36 MHz 0Bh 45 MHz (for 1024x768) 0Ch 80 MHz 0Dh 40 MHz 0Eh 65 MHz 0Fh 1 MHz (for powerdown) --------V-107F00BX4000----------------------- INT 10 - Diamond Stealth 24 - GET S3 INFORMATION BLOCK AX = 7F00h BX = 4000h Return: AX = 007Fh if supported DX:BX -> DAC set mode routine SeeAlso: AX=7F00h/BX=4001h,AX=7F00h/BX=4002h --------V-107F00BX4001----------------------- INT 10 - Diamond Stealth 24 - GET LINEAR ADDRESS AX = 7F00h BX = 4001h Return: AX = 007Fh if supported CX = current linear address base (high word) SeeAlso: AX=7F00h/BX=4000h,AX=7F00h/BX=4002h --------V-107F00BX4002----------------------- INT 10 - Diamond Stealth 24 - SET LINEAR ADDRESS AX = 7F00h BX = 4002h CX = new linear address base (high word) Return: AX = 007Fh if supported SeeAlso: AX=7F00h/BX=4000h,AX=7F00h/BX=4001h --------V-107F01BL00------------------------- INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - SET ADAPTER AX = 7F01h BL = 00h CX = adapter request (see #0113) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed Note: initializes video hardware to a particular standard SeeAlso: AX=7F00h,AX=7F01h/BL=01h,AX=7F01h/BL=02h Bitfields for SOLLEX SuperVGA adapter request: Bit(s) Description (Table 0113) 1-0 adapter type (00 VGA, 01 EGA, 10 CGA, 11 MDA) 2 reserved 4-3 change displays (00 none, 01 analog 10 digital 11 panel) 6-5 desired monitor sense (01 color, 10 mono, 11=8514) 7 lock override 8 alternate adapter mode 15-9 reserved --------V-107F01BL01------------------------- INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - GET ADAPTER AX = 7F01h BL = 01h Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed BX = adapter type (see #0113) DX = display type (see #0114) SeeAlso: AX=7F00h,AX=7F01h/BL=00h,AX=7F01h/BL=02h Bitfields for SOLLEX SuperVGA display type: Bit(s) Description (Table 0114) 15-9 reserved 8 alternate display active 7 Enhanced Color Display monitor active 6 multi-frequency digital monitor active 5 PS/2-type monitor active 4 plasma/electroluminescent panel active 3 LCD panel active 2 multi-frequency analog monitor active 1-0 monitor sense (00 none, 01 color, 10 mono, 11=8514) --------V-107F01BL02------------------------- INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - DETERMINE ADAPTER SUPPORT AX = 7F01h BL = 02h CX = adapter request (see #0113) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h requested setting can successfully be made 01h requested setting not available in this configuration SeeAlso: AX=7F00h,AX=7F01h/BL=00h --------V-107F02BL00------------------------- INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - SET DISPLAY OUTPUT AX = 7F02h BL = 00h CX = display output setting (see #0115) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AX=7F00h,AX=7F02h/BL=00h Bitfields for SOLLEX SuperVGA display output setting: Bit(s) Description (Table 0115) 0 CRTC control in 2,1 valid 1 enable digital output 2 enable analog output 3 panel control in 5,4 valid 4 enable LCD output 5 enable plasma/EL output 6 inverse control in 7 valid 7 0=normal, 1=inverse 15-8 reserved --------V-107F02BL01------------------------- INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - GET DISPLAY OUTPUT AX = 7F02h BL = 01h Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful BX = display output setting (see #0115) CX = displays attached (see #0116) 01h failed SeeAlso: AX=7F00h,AX=7F02h/BL=00h Bitfields for SOLLEX SuperVGA displays attached: Bit(s) Description (Table 0116) 0 PS/2 display on analog output 1 multi-frequency monitor on analog output 2 LCD panel attached 3 plasma/electroluminescent panel attached 4 multi-frequency monitor on digital output 5 Enhanced Color Display attached to digital outpt 6 alternate display 15-7 reserved --------V-107F03BL00------------------------- INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GET SUPPORT INFO AX = 7F03h BL = 00h CX = support type 0000h VGA, 0001h EGA, 0002h CGA, 0003h MDA, 0004h extensions, 0005h-0012h reserved for SOLLEX, 0013h Hercules, 0014h-001Fh reserved for SOLLEX, 0020h-00FFh reserved for OEM Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful CX = size of video support code DX = segment of physical video support (0000h if no ROM) ES = segment of active video support ES:DI -> information block (DI = 0000h if none available) 01h failed SeeAlso: AX=7F03h/BL=01h --------V-107F03BL01------------------------- INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - INITIALIZE VIDEO SUPPORT AX = 7F03h BL = 01h CX = support request ES = segment of support code Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed Note: initializes the indicated video support by calling ES:0003h; this function may be used to switch the active video support back to ROM after AX=7F03h/BL=02h SeeAlso: AX=7F03h/BL=00h --------V-107F03BL02------------------------- INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GO RAM RESIDENT AX = 7F03h BL = 02h CX = support request ES = destination segment Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AX=7F00h,AX=7F03h/BL=01h --------V-107F04BL00------------------------- INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET POWER STATE AX = 7F04h BL = 00h CX = new power state Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed Note: higher values progressively reduce the operations available on the video adapter while yielding increasing power savings SeeAlso: AX=7F00h,AX=7F04h/BL=01h --------V-107F04BL01------------------------- INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET POWER STATE AX = 7F04h BL = 01h Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful CX = current power state DX = maximum state 01h failed SeeAlso: AX=7F00h,AX=7F04h/BL=00h --------V-107F04BL02------------------------- INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET TIMEOUT RESET AX = 7F04h BL = 02h CX = timeout reset Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AX=7F00h,AX=7F04h/BL=03h --------V-107F04BL03------------------------- INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET TIMEOUT RESET AX = 7F04h BL = 03h Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful BX = time increment CX = current timeout reset DX = maximum timeout reset ES:DI -> timeout reset table (array of bytes) 01h failed Note: the timeout period is computed as (BYTE ES:[DI+CX]) * BX timer ticks SeeAlso: AX=7F00h,AX=7F04h/BL=02h --------V-107F05----------------------------- INT 10 - SOLLEX SuperVGA - LOAD REGISTER AX = 7F05h ES:DI -> register value table (see #0117) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AH=F1h,AH=F3h,AH=F5h Format of SOLLEX SuperVGA register value table: Offset Size Description (Table 0117) 00h WORD base I/O register (FFFFh = end of list) 02h 2N BYTEs pairs of values to be written to the base I/O register as an index value and the following register as a data byte 2N+2 WORD FFFFh (end of data list) ... (repeats until FFFFh base address) --------V-107F06----------------------------- INT 10 - SOLLEX SuperVGA - MULTIPLE FONT CONTROL AX = 7F06h BL = subfunction 00h set multiple font state CX = new state (00h off, 01h on) 01h get multiple font state Return: BL = current state (00h off, 01h on) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AH=11h --------V-107F07----------------------------- INT 10 - SOLLEX SuperVGA - FILL VIDEO RAM AX = 7F07h BL = how much to fill 00h regen size 01h all video memory CX = pattern to write (normally 0720h for text modes and 0000h for gr) Return: AL <> 7Fh if not supported AL = 7Fh if supported AH = status 00h successful 01h failed SeeAlso: AH=06h --------A-1080------------------------------- INT 10 - CU Writer v1.4 - GET OPTION AH = 80h AL = desired option Return: ??? Program: CU Writer is a public-domain Thai-English word processor from Chulalongkorn University, Bangkok SeeAlso: AH=81h"CU Writer" --------Q-1080--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - SET ??? HANDLER AH = 80h DX = 4456h ('DV') ES:DI -> FAR subroutine to be called on ??? Return: DS = segment of DESQview data structure for video buffer Note: this function is probably meant for internal use only, due to the magic value required in DX the subroutine seems to be called when the DESQview menu is accessed; on entry, AL = 03h or 04h --------A-1081------------------------------- INT 10 - CU Writer v1.4 - SET OPTION AH = 81h ??? Return: ??? SeeAlso: AH=80h"CU Writer" --------Q-1081--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - GET ??? AH = 81h DX = 4456h ('DV') Return: ES = segment of DESQview data structure for video buffer BYTE ES:[0] = current window number in DV 2.0x Note: this function is probably meant for internal use only, due to the magic value required in DX SeeAlso: AH=82h"DESQview" --------Q-1082--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - GET CURRENT WINDOW INFO AH = 82h DX = 4456h ('DV') Return: DS = segment in DESQview for data structure in DV 2.00, BYTE DS:[0] = window number WORD DS:[1] = segment of other data structure WORD DS:[3] = segment of window's object handle ES = segment of DESQview data structure for video buffer AL = current window number AH = ??? BL = direct screen writes 00h program does not do direct writes 01h program does direct writes, so shadow buffer not usable BH = ??? CL = current video mode CH = ??? Note: this function is probably meant for internal use only, due to the magic value required in DX SeeAlso: AH=81h"DESQview" --------J-108200----------------------------- INT 10 - VIDEO - AX PC - GET/SET SCROLL MODE AX = 8200h BL = new scroll mode or FFh to get current mode 00h dynamic, 01h software Return: AL = scroll mode (current mode if BL=FFh, previous mode otherwise) SeeAlso: AH=06h,AH=07h --------J-108300----------------------------- INT 10 - VIDEO - AX PC - GET VIDEO RAM ADDRESS AX = 8300h Return: AX = offset of video RAM ES:BX -> virtual text RAM buffer SeeAlso: AX=5201h --------N-108B------------------------------- INT 10 - Alloy MW386 - FORCE WORKSTATION SCREEN UPDATE AH = 8Bh SeeAlso: AH=92h,AH=93h --------N-1090------------------------------- INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION DISPLAY MODE AH = 90h Return: AL = current video mode (see #0009 at AH=00h) SeeAlso: AH=91h --------N-1091------------------------------- INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION ADAPTER TYPE AH = 91h Return: AL = video adapter type (see #0118) Note: types less than 80h do not imply that the current user is on the host SeeAlso: AH=90h (Table 0118) Values for Alloy MW386 video adapter type: 00h monochrome 01h Hercules monochrome graphics 02h CGA 03h EGA 04h VGA 80h monochrome text terminal 81h Hercules graphics terminal 82h color graphics terminal --------N-1092------------------------------- INT 10 - Alloy MW386 - INHIBIT WORKSTATION SCREEN UPDATES AH = 92h Note: the terminal will be updated even when screen updates are inhibited if TTY output is used SeeAlso: AH=8Bh --------N-1093------------------------------- INT 10 - Alloy MW386 - REDRAW SCREEN AH = 93h SeeAlso: AH=8Bh,AH=FFh --------A-10A0------------------------------- INT 10 - CU Writer v1.4 - SET PIXEL WRITE MODE AH = A0h ??? Return: ??? Program: CU Writer is a public-domain Thai-English word processor from Chulalongkorn University, Bangkok SeeAlso: AH=80h"CU Writer",AH=B0h --------p-10A0------------------------------- INT 10 - ATI Mach64 BIOS - Display Power Management Signalling API??? AH = A0h AL = function (00h-13h) ??? Return: AH = status 00h successful 01h failed ??? SeeAlso: AX=4F10h/BL=00h --------V-10A004----------------------------- INT 10 - PhoenixVIEW/LC - VIDEO DISPLAY TYPE AX = A004h ??? Return: ??? Desc: configure display parameters SeeAlso: AX=A01Bh"PhoenixVIEW/LC" --------p-10A00C----------------------------- INT 10 - ATI Mach64 BIOS - SET SLEEP MODE AX = A00Ch CL = new state 01h standby 02h suspend 03h off Return: AH = status 00h successful 01h failed SeeAlso: AX=4F00h,AX=4F10h/BL=01h --------V-10A01B----------------------------- INT 10 - PhoenixVIEW/LC - CRT MONITOR DETECTION AX = A01Bh ??? Return: ??? Desc: determine whether an external display is currently attached SeeAlso: AX=A004h"PhoenixVIEW/LC" --------A-10B0------------------------------- INT 10 - CU Writer v1.4 - PUT PIXEL AH = B0h ??? Return: ??? SeeAlso: AH=A0h"CU Writer",AH=B1h,AH=B2h,AH=B3h,AH=B4h,AH=B5h,AH=D0h --------A-10B1------------------------------- INT 10 - CU Writer v1.4 - MOVE TO AH = B1h ??? Return: ??? SeeAlso: AH=B0h,AH=B2h,AH=C0h"CU Writer" --------A-10B2------------------------------- INT 10 - CU Writer v1.4 - DRAW LINE TO AH = B2h ??? Return: ??? SeeAlso: AH=B0h,AH=B1h,AH=B3h,AH=B4h,AH=B5h --------A-10B3------------------------------- INT 10 - CU Writer v1.4 - FLOOD FILL AH = B3h ??? Return: ??? SeeAlso: AH=B2h,AH=B5h --------A-10B4------------------------------- INT 10 - CU Writer v1.4 - DRAW RECTANGLE AH = B4h ??? Return: ??? SeeAlso: AH=B0h,AH=B2h,AH=B3h,AH=B5h --------A-10B5------------------------------- INT 10 - CU Writer v1.4 - DRAW FILLED RECTANGLE AH = B5h ??? Return: ??? SeeAlso: AH=B0h,AH=B2h,AH=B3h,AH=B4h --------V-10BD44----------------------------- INT 10 U - Compaq QVision - ??? AX = BD44h ??? Return: ??? Note: called by Compaq's MTX132.COM, which places the QVision in 132-column mode --------V-10BF--CX0000----------------------- INT 10 - Athena Digital HGCIBM.COM - INSTALLATION CHECK AH = BFh CX = 0000h (???) Return: CX = 0202h DL = ??? (internal data, possibly version number) --------b-10BF00----------------------------- INT 10 - VIDEO - Compaq Extensions - SELECT EXTERNAL MONITOR AX = BF00h Desc: specify that the external monitor become the active monitor Note: all registers preserved and the internal monitor is blanked SeeAlso: AX=BF01h,AX=BF12h --------b-10BF01----------------------------- INT 10 - VIDEO - Compaq Extensions - SELECT INTERNAL MONITOR AX = BF01h Desc: specify that the internal monitor become the active monitor Note: all registers preserved and the external monitor is blanked SeeAlso: AX=BF00h,AX=BF12h --------b-10BF02----------------------------- INT 10 - VIDEO - Compaq Extensions - SET MASTER MODE OF CURRENT CONTROLLER AX = BF02h BH = master mode 04h CGA 05h EGA 07h MDA SeeAlso: AX=BF03h --------b-10BF03BX0000----------------------- INT 10 - VIDEO - Compaq Extensions - GET ENVIRONMENT AX = BF03h BX = 0000h Return: BH = active monitor (00h = external, 01h = internal, 03h both, 04h neither) BL = master mode (see #0119) CH = ASIC type and version 00h (reserved, very early Compaq VGCs) 31h if QVision VGA CL = switchable VDU modes supported (see #0120) DH = internal monitor type (see #0121) DL = external monitor type (see #0121) SeeAlso: AX=1A00h,AX=BF00h,AX=BF01h,AX=BF02h,AX=BF11h (Table 0119) Values for Compaq video master mode: 00h switchable VDU not present 04h CGA 05h EGA 07h MDA 08h switchable LCD controller present 09h plasma VGA 0Ah TFT (active-matrix) VGA Bitfields for Compaq switchable VDU modes support: Bit(s) Description (Table 0120) 0 CGA supported 1,2 reserved (1) 3 MDA supported 4 BitBLT engine available 5 132-column support availble 6 640x480x256 mode available 7 8-bit DAC mode available (Table 0121) Values for Compaq monitor type: 00h none 01h dual-mode monitor 02h 5153 RGB monitor (RGBI 16-color) 03h Compaq Color monitor 04h 640x400 flat panel (Plasma CGA) 05h VGC monochrome 06h VGC color 07h 8-level mono LCD VGA (internal) 1024x768 mono VGA (external) 08h 16-level mono plasma VGA (internal) 1024x768 color VGA (external) 09h 4-level mono LCD CGA 0Ah 16-level mono LCD VGA 0Bh active-matrix color VGA 0Ch active-matrix mono VGA 0Dh STN color VGA --------b-10BF04----------------------------- INT 10 - VIDEO - Compaq Extensions - SET MODE SWITCH DELAY AX = BF04h BH = new state of delay (00h enabled, 01h disabled) Note: the 04/08/93 sytem ROM appears to use BL instead of BH; a future version of the list will provide more definite information SeeAlso: AX=BF05h --------b-10BF05----------------------------- INT 10 - VIDEO - Compaq Extensions - ENABLE/DISABLE DISPLAY AX = BF05h BH = new state of video 00h off 01h on Note: the 04/08/93 sytem ROM appears to use BL instead of BH; a future version of the list will provide more definite information SeeAlso: AH=12h/BL=36h,AX=BF04h --------b-10BF06----------------------------- INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE AX = BF06h CL = address to be read from gray scale table Return: AL = bit 3-0 - Value read from gray scale table CL = address to be read from gray scale table SeeAlso: AH=12h/BL=33h,AX=BF07h --------b-10BF07----------------------------- INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE AX = BF07h CH = value to write to gray scale table CL = address to be written to gray scale table SeeAlso: AX=BF06h,AX=BF08h --------b-10BF08----------------------------- INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS AX = BF08h CH = bits 7-4 green weight bits 3-0 blue weight CL = bits 7-4 unused bits 3-0 red weight SeeAlso: AH=12h/BH=33h,AX=BF07h --------b-10BF09----------------------------- INT 10 - VIDEO - Compaq Extensions - TURN ON REVERSE VIDEO AX = BF09h Return: CF clear Notes: sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h to 6Fh and index 83h to 04h supported by at least the QVision board and the LTE Lite ROM BIOS SeeAlso: AX=BF0Ah,AX=BF0Bh --------b-10BF0A----------------------------- INT 10 - VIDEO - Compaq Extensions - TURN OFF REVERSE VIDEO AX = BF0Ah Return: CF clear Notes: clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h to 80h and index 83h to FBh supported by at least the QVision board and the LTE Lite ROM BIOS SeeAlso: AX=BF09h,AX=BF0Bh --------b-10BF0B----------------------------- INT 10 - VIDEO - Compaq Extensions - CHECK WHETHER VIDEO REVERSED AX = BF0Bh Return: CF clear AX = state (0000h normal video, 0001h reverse video) Note: supported by at least the QVision board and the LTE Lite ROM BIOS SeeAlso: AX=BF09h,AX=BF0Ah --------b-10BF0C----------------------------- INT 10 - VIDEO - Compaq Extensions - SET DAC 6-BIT MODE AX = BF0Ch Return: CF clear Desc: specify that video DAC registers use only six bits of color info Note: supported by at least the QVision board and the SystemPro XL ROM BIOS SeeAlso: AX=BF0Dh,AX=BF0Eh --------b-10BF0D----------------------------- INT 10 - VIDEO - Compaq Extensions - SET DAC 8-BIT MODE AX = BF0Dh Return: CF clear Desc: specify that video DAC registers use all eight bits of color info Note: supported by at least the QVision board and the SystemPro XL ROM BIOS SeeAlso: AX=BF0Ch,AX=BF0Eh --------b-10BF0E----------------------------- INT 10 - VIDEO - Compaq Extensions - CHECK DAC 6-BIT/8-BIT mode AX = BF0Eh Return: CF clear AL = DAC mode 00h in 6-bit mode 01h in 8-bit mode Note: supported by at least the QVision board and the SystemPro XL ROM BIOS SeeAlso: AX=BF0Ch,AX=BF0Dh --------b-10BF0F----------------------------- INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER AX = BF0Fh BX = high address map location in megabytes, or 0000h to disable high address map, or FFFFh to let ROM configure high address map Return: CF clear AX = previous value of high address map register Notes: supported by at least the QVision board and the SystemPro XL and LTE Lite ROM BIOSes SeeAlso: AX=BF10h --------b-10BF10----------------------------- INT 10 - VIDEO - Compaq Extensions - GET HIGH ADDRESS MAP REGISTER AX = BF10h Return: CF clear AX = current value of high address map register Notes: supported by at least the QVision board and the SystemPro XL and LTE Lite ROM BIOSes the Compaq QVision documentation (October 1993) says the value is returned in BX, but this appears to be one of many typos SeeAlso: AX=BF0Fh --------b-10BF11----------------------------- INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT AX = BF11h Return: AL = BFh if supported CF clear ES:DI -> ASCII signature "COMPAQ" ES:SI -> advanced functionality table (see #0122) Note: supported by at least the QVision board and the LTE Lite and ProSignia ROM BIOSes SeeAlso: AX=1A00h,AX=BF03h Bitfields for Compaq advanced video functionality: Bit(s) Description (Table 0122) 31 future graphics extensions (reserved, set to 0) 30-16 reserved 15-12 available video memory in 256K blocks, less one (0000 = 256K, etc.) 11-8 reserved 7 QVision modes supported 6 Advanced VGA modes supported 5 Accelerated VGA modes supported 4 standard VGA modes supported 3-2 reserved 1 132-column modes supported 0 reserved --------b-10BF12----------------------------- INT 10 - VIDEO - Compaq Extensions - NEW ACTIVE MONITOR AX = BF12h BH reserved BL = function mask (see #0123) Return: CF clear Notes: this function is a NOP if the VGA subsystem is inactive or the current Display Combination Code is 10h or higher supported by at least the QVision board and the LTE Lite and ProSignia ROM BIOSes SeeAlso: AX=BF01h,AX=BF02h Bitfields for function mask: Bit(s) Description (Table 0123) 7 command mode if set, bits 1 and 0 make the monitor active when set if clear, bits 1 and 0 toggle the monitor's state when set 6-2 reserved 1 internal monitor 0 external monitor --------b-10BF13----------------------------- INT 10 - VIDEO - Compaq QVision - GAMMA CORRECTION AX = BF13h BL = subfunction 00h load gamma correction table for true-color mode DS = BIOS data segment 01h set palette RAM bypass BH = 00h Return: nothing Note: these functions must be called after a video mode set, and are in effect only for the current video mode --------V-10BFA0BXADAD----------------------- INT 10 - VIDEO - Compaq ADAPT.COM - INSTALLATION CHECK AX = BFA0h BX = ADADh Return: AX = BDBDh if newer ADAPT.COM installed BX = BCD version (BH = major, BL = minor) CL = ??? CH = ??? DL = ??? AX = ADADh if older version of ADAPT.COM installed Program: ADAPT is Compaq's Advanced Display Attribute Programming Tool, an optionally-resident utility for setting display colors and cursor size; when resident, it also includes a screen blanker SeeAlso: AX=BFA1h,AX=BFA2h,AX=DFA5h Index: screen saver;ADAPT --------V-10BFA1----------------------------- INT 10 - VIDEO - Compaq ADAPT.COM - GET ??? AX = BFA1h Return: AX = BDBEh if supported CH = current value of ??? DL = current value of ??? SeeAlso: AX=BFA0h,AX=BFA2h --------V-10BFA2----------------------------- INT 10 - VIDEO - Compaq ADAPT.COM - SET ??? AX = BFA2h CH = new value for ??? DL = new value for ??? Return: AX = BDBEh if supported SeeAlso: AX=BFA0h,AX=BFA1h --------A-10C0------------------------------- INT 10 - CU Writer v1.4 - GO TO TEXT ROW AND COLUMN AH = C0h ??? Return: ??? SeeAlso: AH=B1h,AH=C1h,AH=C2h,AH=C3h,AH=C4h --------A-10C1------------------------------- INT 10 - CU Writer v1.4 - OUTPUT TEXT AH = C1h ??? Return: ??? SeeAlso: AH=C0h,AH=C2h,AH=C3h,AH=C4h --------A-10C2------------------------------- INT 10 - CU Writer v1.4 - REVERSE TEXT AH = C2h ??? Return: ??? SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=C4h --------A-10C3------------------------------- INT 10 - CU Writer v1.4 - TEXT BAR AH = C3h ??? Return: ??? SeeAlso: AH=C0h,AH=C1h,AH=C4h --------A-10C4------------------------------- INT 10 - CU Writer v1.4 - TEXT MENU AH = C4h ??? Return: ??? SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=D0h --------V-10CB00----------------------------- INT 10 - UNCHAIN - SAVE CURRENT VGA REGISTERS AX = CB00h Note: combined with AX=CB06h, this function permits the use of video mode 13h together with the VGA's unchained mode SeeAlso: AX=CB06h,AX=CBFFh --------V-10CB01----------------------------- INT 10 - UNCHAIN - UPDATE PAGE 1 OFFSET AX = CB01h BX = offset of page 1 Desc: inform UNCHAIN of the location of video page 1 in video memory; the default is 0000h SeeAlso: AX=CB02h,AX=CB03h,AX=CB04h,AX=CBFFh --------V-10CB02----------------------------- INT 10 - UNCHAIN - UPDATE PAGE 2 OFFSET AX = CB02h BX = offset of page 2 Desc: inform UNCHAIN of the location of video page 2 in video memory; the default is 3E80h (16000, for 320x200) SeeAlso: AX=CB00h,AX=CB01h,AX=CB03h,AX=CB04h --------V-10CB03----------------------------- INT 10 - UNCHAIN - UPDATE PAGE 3 OFFSET AX = CB03h BX = offset of page 3 Desc: inform UNCHAIN of the location of video page 3 in video memory; the default is 7D00h (32000, for 320x200) SeeAlso: AX=CB01h,AX=CB02h,AX=CB04h --------V-10CB04----------------------------- INT 10 - UNCHAIN - UPDATE PAGE 4 OFFSET AX = CB04h BX = offset of page 4 Desc: inform UNCHAIN of the location of video page 4 in video memory; the default is BB80h (48000, for 320x200) SeeAlso: AX=CB01h,AX=CB02h,AX=CB03h,AX=CB05h --------V-10CB05----------------------------- INT 10 - UNCHAIN - SAVE PALETTE AX = CB05h SeeAlso: AX=CB00h,AX=CB06h --------V-10CB06----------------------------- INT 10 - UNCHAIN - RESTORE VGA REGISTERS AX = CB06h SeeAlso: AX=CB00h,AX=CB05h,AX=CBFFh --------V-10CBFF----------------------------- INT 10 - UNCHAIN - INSTALLATION CHECK AX = CBFFh Return: AX = CCBBh if installed Program: UNCHAIN is a TSR by Colin Buckley which permits use of Borland development tools with Mode X video in the absence of a second monitor SeeAlso: AX=CB00h,AX=CB01h,AX=CB06h --------V-10CC00----------------------------- INT 10 - VIDEO - UltraVision - GET STATUS (INSTALLATION CHECK) AX = CC00h SI = magic value 0000h (if checking version) Return: CX = product signature ABCDh UltraVision 5546h ('UF') UltraFont AL = Ultravision extensions 00h enabled FFh disabled AH = card designator BX:00F0h -> palette values (for compatibility with NEWFONT) DX = support for high resolution modes 00h not active 01h active SI = UltraVision version number (v1.2+), high byte=major,low byte=minor unchanged for versions <1.2 Note: UltraFont is a simplified version of UltraVision for Toshiba; only the signature in CX and the status in AL will be returned SeeAlso: AX=CC01h,AX=CC02h --------V-10CC01----------------------------- INT 10 - VIDEO - UltraVision - DISABLE EXTENSIONS AX = CC01h Notes: subsequent BIOS calls will be passed through to previous handler should be followed immediately by mode set to restore normal EGA/VGA state SeeAlso: AX=CC02h --------V-10CC02----------------------------- INT 10 - VIDEO - UltraVision - ENABLE EXTENSIONS AX = CC02h Note: should be followed immediately by mode set to restore previous UltraVision state SeeAlso: AX=CC01h --------V-10CD00----------------------------- INT 10 - VIDEO - UltraVision - LOAD ULTRAVISION PALETTE (color EGA,VGA) AX = CD00h CL = palette table number (01h-07h for v1.x, 01h-0Fh for v2+) DS:DX -> 16-byte palette register list (colors for registers 00h-0Fh) Notes: if palette locking is in effect for the current mode, the new colors will be displayed immediately; otherwise, the system reverts to the default palette palette table 0 is reserved for the default palette and cannot be set UltraVision always sets the border color to black SeeAlso: AX=CD01h,AX=CD02h --------V-10CD01----------------------------- INT 10 - VIDEO - UltraVision - SET PALETTE LOCKING STATUS (color EGA,VGA) AX = CD01h CL = palette locking value 00h none 01h text modes only (02h,03h) FFh all modes (all standard color text and graphics modes) Notes: intended for video modes with 16 or fewer colors SeeAlso: AX=1000h,AX=1002h,AX=CD00h,AX=CD03h --------V-10CD02----------------------------- INT 10 - VIDEO - UltraVision - GET ULTRAVISION PALETTE (EGA,VGA) AX = CD02h Return: CL = palette table number DS:DX -> 17-byte palette register list (see #0124) DS:SI -> current font names table (see #0125,#0126) Note: only the font names are valid on monochrome EGA systems SeeAlso: AX=1009h,AX=CD00h Format of UltraVision palette register list: Offset Size Description (Table 0124) 00h 16 BYTEs colors for palette registers 00h through 0Fh 10h BYTE border color Format of UltraVision v2+ current font names table: Offset Size standard EGA HiRes EGA VGA (Table 0125) 00h 8 BYTEs N/A F19 font F20 font 08h 8 BYTEs F14 font F14 font F14 font 10h 8 BYTEs N/A F11 font F10 font 18h 8 BYTEs F8 font F8 font F8 font Format of UltraVision v1.x current font names table: Offset Size HiRes EGA (Table 0126) 00h 8 BYTEs F19/F14 font 08h 8 BYTEs F11/F8 font --------V-10CD03----------------------------- INT 10 - VIDEO - UltraVision - GET PALETTE LOCKING STATUS (color EGA,VGA) AX = CD03h Return: CL = palette locking value 00h none 01h text modes only FFh all modes SeeAlso: AX=CD01h --------V-10CD04----------------------------- INT 10 - VIDEO - UltraVision - GET UltraVision TEXT MODE (EGA,VGA) AX = CD04h Return: AL = mode number (see #0127) SeeAlso: AH=0Fh,AX=CC00h,AH=CDh (Table 0127) Values for UltraVision video mode number: 11h 80x25 12h 80x43, 80x50 13h 80x34, 80x36 14h 80x60, 80x63 19h 94x25 1Ah 94x43, 94x50 1Bh 94x36 1Ch 94x63 21h 108x25 22h 108x43, 108x50 23h 107x34, 108x36 24h 108x60, 108x63 31h 120x25 32h 120x43, 120x50 33h 132x25 34h 132x44, 132x50 39h 120x36 3Ah 120x63 3Bh 132x36 3Ch 132x60 Index: video modes;UltraVision --------V-10CD05----------------------------- INT 10 - VIDEO - UltraVision - SET CURSOR TYPE (EGA,VGA) AX = CD05h CL = type 00h line cursor FFh box cursor Note: sets default cursor type for text-based programs SeeAlso: AH=01h,AX=CD06h --------V-10CD06----------------------------- INT 10 - VIDEO - UltraVision - GET CURSOR TYPE (EGA,VGA) AX = CD06h Return: CL = type 00h line cursor FFh box cursor SeeAlso: AH=03h,AX=CD05h --------V-10CD07----------------------------- INT 10 - VIDEO - UltraVision v1.2+ - SET UNDERLINE STATUS (EGA,VGA) AX = CD07h CL = hardware underline status (see #0128) BL = foreground color for normal text (FFh = current) BH = foreground color for bright text (FFh = current) Return: CL = hardware underline status BL = current foreground color for normal text BH = current foreground color for bright text Notes: when underline or strikeout is enabled in color text modes, the specified colors will be assigned temporarily to colors 01h and 09h, allowing affected text to match non-underlined text. The color remapping uses values from the current onscreen palette regardless of the palette locking status (see AX=CD01h) specify the standard colors (BL=01h,BH=09h) to enable underline or strikeout without color remapping SeeAlso: AX=CD08h (Table 0128) Values for hardware underline status: 00h off (color systems only) 01h underline below characters 02h strike through characters --------V-10CD08----------------------------- INT 10 - VIDEO - UltraVision v1.2+ - GET UNDERLINE STATUS (EGA,VGA) AX = CD08h Return: CL = hardware underline status (see #0128) BL = foreground color for normal text BH = foreground color for bright text Note: only CL is valid on monochrome EGA systems SeeAlso: AX=CD07h --------V-10CD10----------------------------- INT 10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA) AX = CD10h BH = bytes per character (08h,0Ah,0Bh,0Eh,13h,14h) CX = ABCDh load 9xN alternate font (v2+) else number of characters to load DX = character offset into font table DS:SI -> 8-byte ASCII font name ES:BP -> font definitions Return: AX = FFFFh if invalid font parameters Notes: loads the designated characters into UltraVision's resident font area should be followed by a video mode set to reload character generator SeeAlso: AX=1100h --------V-10CD------------------------------- INT 10 - VIDEO - UltraVision - SET ULTRAVISION TEXT MODE (EGA,VGA) AH = CDh AL = text mode number (see #0127) Return: AX = CDCDh if invalid mode SeeAlso: AX=CD04h --------A-10D0------------------------------- INT 10 - CU Writer v1.4 - LOAD PICTURE AH = D0h ??? Return: ??? SeeAlso: AH=B0h"CU Writer",AH=C4h --------V-10D0------------------------------- INT 10 U VIDEO - HP 100LX/200LX - SET ZOOM MODE AH = D0h AL = zoom mode 02h 80x25 mono 03h 80x25 color 80h 64x18 mono 81h 64x18 color 82h 40x25 mono 83h 40x25 color 84h 40x16 mono 85h 40x16 color Note: zoom mode can only be changed within zoom modes of the same color scheme; if needed, set to mono/color with AH=00h,AL=02h/03h; with mono video modes AL=07h or AL=21h only 80x25 and 40x16 will work the current zoom mode is stored in the BIOS data area at 0040h:009Fh SeeAlso: AH=D1h,AH=D4h --------V-10D1------------------------------- INT 10 U VIDEO - HP 100LX/200LX - INTERNAL - ??? AH = D1h AL = 01h Return: ??? Note: called by AH=D0h SeeAlso: AH=D0h,AH=D4h --------V-10D4------------------------------- INT 10 U VIDEO - HP 100LX/200LX - INTERNAL - ??? AH = D4h AL = 29h Return: ??? Note: called by AH=D0h SeeAlso: AH=D0h,AH=D1h --------V-10D5------------------------------- INT 10 - Netroom SCRNCLK - ??? AH = D5h ??? Return: ??? Program: SCRNCLK is a "cloaked" screen accelerator included with Netroom --------V-10DFA5----------------------------- INT 10 U - VIDEO - Compaq ADAPT.COM - GET ??? DATA AREA AX = DFA5h Return: AX = BDBFh if supported ES:DI -> ??? data area BX = ES SeeAlso: AX=BFA0h --------V-10EF------------------------------- INT 10 - VIDEO - MSHERC.COM - GET VIDEO ADAPTER TYPE AND MODE AH = EFh Return: DL = video adapter type 00h original Hercules 01h Hercules Plus (port 03BAh reads x001xxxxx) 02h Hercules InColor (port 03BAh reads x101xxxxx) FFh not a Hercules-compatible card (port 03BAh bit 7 not pulsing) DH = memory mode byte 00h "half" mode 01h "full" mode FFh not a Hercules-compatible card Program: MSHERC.COM is a support program for the Microsoft Quick languages which makes their graphics libraries compatible with a Hercules card by adding video modes 08h and 88h, and supporting text in the new graphics modes. Notes: while in mode 08h or 88h, INT 10 supports the Hercules card much like a CGA. MSHERC performs an installation check by setting DL=FFh and testing whether it has been changed on return, which causes it to reinstall itself when no HGC is present (or HGC emulation has temporarily been disabled); a better installation check would be to use DX=80FFh and check whether DX has been changed reportedly returns DH=00h on some not-entirely-Hercules-compatible cards Index: installation check;MSHERC --------V-10F0------------------------------- INT 10 - EGA Register Interface Library - READ ONE REGISTER AH = F0h BL = register number BH = 00h DX = group index (see #0129) Return: BL = data Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AH=F1h,AH=F2h,INT 2F/AX=BC00h (Table 0129) Values for group index: Pointer/data chips 00h CRT Controller (25 reg) 3B4h mono modes, 3D4h color modes 08h Sequencer (5 registers) 3C4h 10h Graphics Controller (9 registers) 3CEh 18h Attribute Controller (20 registers) 3C0h Single registers 20h Miscellaneous Output register 3C2h 28h Feature Control register (3BAh mono modes, 3DAh color modes) 30h Graphics 1 Position register 3CCh 38h Graphics 2 Position register 3CAh --------V-10F1------------------------------- INT 10 - EGA Register Interface Library - WRITE ONE REGISTER AH = F1h DX = group index (see #0129) if single register: BL = value to write otherwise BL = register number BH = value to write Return: BL = data Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AX=7F05h,AH=F0h,AH=F3h --------V-10F2------------------------------- INT 10 - EGA Register Interface Library - READ REGISTER RANGE AH = F2h CH = starting register number CL = number of registers (>1) DX = group index (00h,08h,10h,18h) (see #0129) ES:BX -> buffer, CL bytes Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AH=F0h,AH=F3h --------V-10F3------------------------------- INT 10 - EGA Register Interface Library - WRITE REGISTER RANGE AH = F3h CH = starting register CL = number of registers (>1) DX = group index (00h,08h,10h,18h) (see #0129) ES:BX -> buffer, CL bytes Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AX=7F05h,AH=F1h,AH=F2h --------V-10F4------------------------------- INT 10 - EGA Register Interface Library - READ REGISTER SET AH = F4h CX = number of registers to read (>1) ES:BX -> table of register records (see #0130) Return: register values in table filled in Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AH=F0h,AH=F2h,AH=F5h Format of EGA RIL entries in table of register records: Offset Size Description (Table 0130) 00h WORD group index Pointer/data chips 00h CRTC (3B4h mono modes, 3D4h color modes) 08h Sequencer 3C4h 10h Graphics Controller 3CEh 18h Attribute Controller 3C0h Single registers 20h Miscellaneous Output register 3C2h 28h Feature Control register (3BAh mono modes, 3DAh color) 30h Graphics 1 Position register 3CCh 38h Graphics 2 Position register 3CAh 02h BYTE register number (0 for single registers) 03h BYTE register value --------V-10F5------------------------------- INT 10 - EGA Register Interface Library - WRITE REGISTER SET AH = F5h CX = number of registers to write (>1) ES:BX -> table of records (see #0130) Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AX=7F05h,AH=F1h,AH=F3h,AH=F4h --------V-10F6------------------------------- INT 10 - EGA Register Interface Library - REVERT TO DEFAULT REGISTERS AH = F6h Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and others SeeAlso: AH=F7h --------V-10F7------------------------------- INT 10 - EGA Register Interface Library - DEFINE DEFAULT REGISTER TABLE AH = F7h DX = port number Pointer/data chips 00h CRTC (3B4h mono modes, 3D4h color modes) 08h Sequencer 3C4h 10h Graphics Controller 3CEh 18h Attribute Controller 3C0h Single registers 20h Miscellaneous Output register 3C2h 28h Feature Control register (3BAh mono modes, 3DAh color modes) 30h Graphics 1 Position register 3CCh 38h Graphics 2 Position register 3CAh ES:BX -> table of one-byte entries, one byte to be written to each register Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AH=F6h --------V-10FA--BX0000----------------------- INT 10 - EGA Register Interface Library - INTERROGATE DRIVER AH = FAh BX = 0000h Return: BX = 0000h if RIL driver not present ES:BX -> EGA Register Interface version number, if present: byte 0 = major release number byte 1 = minor release number Note: the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2 compatibility box, and others SeeAlso: AH=F6h,INT 2F/AX=BC00h --------K-10FA------------------------------- INT 10 - FASTBUFF.COM - INSTALLATION CHECK AH = FAh Return: AX = 00FAh if installed ES = segment of resident code Program: FASTBUFF.COM is a keyboard speedup/screen blanking utility by David Steiner Index: screen saver;FASTBUFF --------V-10FE------------------------------- INT 10 - TopView - GET SHADOW BUFFER AH = FEh ES:DI -> assumed video buffer B800h:0000h color text/CGA graphics, B000h:0000h mono text, or A000h:0000h EGA/VGA graphics (RSIS environments only) Return: ES:DI -> actual video buffer for calling process Desc: Determine the address of the virtual screen to which the program should write instead of the actual video memory; this permits programs to be multitasked without interfering with each other's output, and allows memory managers to move the video memory to permit larger programs to be loaded. Notes: if no multitasker or RSIS-compliant environment is installed, ES:DI is returned unchanged; RSIS is the Relocated Screen Interface Specification for display pages other than 0, use AH=05h and AH=0Fh to determine whether a particular page exists TopView requires a call to AH=FFh to notify it that the screen has changed; DESQview will check for changes itself until the first call to AH=FFh SeeAlso: AH=05h,AX=5201h,AH=FFh,INT 15/AX=1024h,INT 21/AH=2Bh"DESQview" SeeAlso: INT 21/AH=ECh"DoubleDOS" --------V-10FF------------------------------- INT 10 - TopView - UPDATE SCREEN FROM SHADOW BUFFER AH = FFh CX = number of consecutive changed characters ES:DI -> first changed character in shadow buffer Notes: avoid CX=0000h DESQview will discontinue the automatic screen updating initiated by AH=FEh after this call not supported (ignored) by DESQview/X 1.0x SeeAlso: AH=93h,AH=FEh --------E-10FF------------------------------- INT 10 - DJ GO32.EXE 80386+ DOS extender - VIDEO EXTENSIONS AH = FFh AL = video mode (see #0131) Program: GO32.EXE is a DOS extender included as part of the 80386 port of the GNU C/C++ compiler by DJ Delorie and distributed as DJGPP SeeAlso: AH=00h,INT 21/AH=FFh"GO32" (Table 0131) Values for GO32 video mode number: 00h 80x25 text 01h default text 02h CXxDX text 03h biggest text 04h 320x200 graphics 05h default graphics 06h CXxDX graphics 07h biggest non-interlaced graphics 08h biggest graphics Index: video modes;GO32 --------V-10FF------------------------------- INT 10 - VIDEO - Oak VGA BIOS v1.02+ - SET EMULATION AH = FFh AL = emulation 43h ('C') CGA emulation 45h ('E') EGA emulation 4Dh ('M') Hercules emulation 56h ('V') VGA emulation ES:DI -> signature string "Calamity" Return: VGA switched to suggested mode SeeAlso: AH=00h,AX=007Fh,AX=5F01h --------R-10FF00----------------------------- INT 10 - CARBON COPY PLUS v5.0 - CHECK IF CC CONNECTED TO CCHELP AX = FF00h Return: BL = state 00h not connected 01h connected SeeAlso: AX=FF01h,AX=FF02h --------R-10FF01----------------------------- INT 10 - CARBON COPY PLUS v5.0 - DISCONNECT AND RESET LINE AX = FF01h SeeAlso: AX=FF00h,AX=FF02h --------R-10FF02----------------------------- INT 10 - CARBON COPY PLUS v5.0 - GET LAST PHONE NUMBER DIALED AX = FF02h Return: ES:DI -> ASCIZ phone number SeeAlso: AX=FF00h,AX=FF01h --------C-11--------------------------------- INT 11 - CPU-generated (80486+) - ALIGNMENT CHECK Desc: automatically generated by the CPU when the AC flag is set, the current privilege level is 3, and a misaligned memory access (WORD not on an even address or DWORD not on a multiple of 4) is made Note: not all V86 monitors allow the AC flag to be set, such as Turbo Debugger 386 --------B-11--------------------------------- INT 11 - BIOS - GET EQUIPMENT LIST Return: (E)AX = BIOS equipment list word (see #0132) Note: since older BIOSes do not know of the existence of EAX, the high word of EAX should be cleared before this call if any of the high bits will be tested Bitfields for BIOS equipment list: Bit(s) Description (Table 0132) 0 floppy disk(s) installed (see 6-7) 1 80x87 coprocessor installed 3-2 number of 16K banks of RAM on motherboard (PC only) number of 64K banks of RAM on motherboard (XT only) 2 pointing device installed (PS) 3 unused (PS) 5-4 initial video mode 00 EGA, VGA, or PGA 01 40x25 color 10 80x25 color 11 80x25 monochrome 7-6 number of floppies installed less 1 (if 0 set) 8 DMA support installed (PCjr, Tandy 1400LT) DMA support *not* installed (Tandy 1000's) 11-9 number of serial ports installed 12 game port installed 13 serial printer attached (PCjr) internal modem installed (PC/Convertible) 15-14 number of parallel ports installed ---Compaq, Dell, and many other 386/486 machines-- 23 page tables set so that Weitek coprocessor addressable in real mode 24 Weitek math coprocessor present ---Compaq Systempro--- 25 internal DMA parallel port available 26 IRQ for internal DMA parallel port (if bit 25 set) 0 = IRQ5 1 = IRQ7 28-27 parallel port DMA channel 00 DMA channel 0 01 DMA channel 0 ??? 10 reserved 11 DMA channel 3 SeeAlso: INT 12 --------d-11----SI6A6A----------------------- INT 11 - Columbia Data Products Standard Device Level Protocol (SDLP) 1.6 SI = 6A6Ah AH = command (see #0133) AL = SCSI Addressing (see #0134) Return: CF clear if successful DI = 6A6Ah if AH=01h on entry (maybe for all functions???) AH = ??? for command 01h CF set on error AL = error code SeeAlso: INT 21/AX=4402h"ASPI" (Table 0133) Values for SDLP command: 00h SDLP initialization 01h SDLP System Identify 02h simple read sectors 03h simple write sectors 04h simple verify sectors/seek to sector 05h get device size/type 06h ready unit 07h format unit 08h diagnostics 09h rewind 0Ah erase 0Bh write filemarks 0Ch space 0Dh prevent/allow media removal 0Eh load/unload media 0Fh reserved - returns good status 10h set block size 11h write setmark 12h set error level 13h get address of Request Sense Buffer 14h get SDLP error via Request Sense F0h Vendor Unique Function (WD7000-FASST2 only) FDh reset current SCSI HAC FEh get/set current SCSI HAC FFh execute SCSI command Bitfields for SDLP SCSI addressing: Bit(s) Description (Table 0134) 7-6 Host Adapter 5-3 SCSI Target ID 2-0 SCSI Target LUN (logical unit number) --------V-110225BX6900----------------------- INT 11 - Blank-It Screen Blanker - INSTALLATION CHECK AX = 0225h BX = 6900h Return: BL = 23h ES:DI -> ASCIZ "BLNKIT" Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems, Inc. SeeAlso: AX=0225h/BX=6902h,AX=0225h/BX=6908h,AX=0225h/BX=6909h,INT 14/AX=AA01h Index: screen saver;Blank-It --------V-110225BX6901----------------------- INT 11 - Blank-It Screen Blanker - SET TIMEOUT FOR SCREEN BLANKING AX = 0225h BX = 6901h CX = timeout in timer ticks (18.2/second) or 0000h to disable timeout largest value is 59 minutes (FBACh or 64428) Return: CF clear if successful DI = 6A6Ah (possibly also 6A6Ah for all following functions) AH = ??? CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6904h Index: screen saver;Blank-It --------V-110225BX6902----------------------- INT 11 - Blank-It Screen Blanker - ENABLE THE SOFTWARE AX = 0225h BX = 6902h Return: CF clear if successful CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6903h Index: screen saver;Blank-It --------V-110225BX6903----------------------- INT 11 - Blank-It Screen Blanker - DISABLE THE SOFTWARE AX = 0225h BX = 6903h Return: CF clear if successful CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6902h Index: screen saver;Blank-It --------V-110225BX6904----------------------- INT 11 - Blank-It Screen Blanker - GET BLANKING TIMEOUT AX = 0225h BX = 6904h Return: CF clear if successful BX = timeout (see BX=6901h) CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6901h Index: screen saver;Blank-It --------V-110225BX6905----------------------- INT 11 - Blank-It Screen Blanker - ENABLE WINDOWS COMPATIBILITY MODE AX = 0225h BX = 6905h Return: CF clear if successful CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6906h Index: screen saver;Blank-It --------V-110225BX6906----------------------- INT 11 - Blank-It Screen Blanker - DISABLE WINDOWS COMPATIBILITY MODE AX = 0225h BX = 6906h Return: CF clear if successful CF set on error AL = error code Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems, Inc. SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6905h Index: screen saver;Blank-It --------V-110225BX6907----------------------- INT 11 - Blank-It Screen Blanker - UNBLANK THE SCREEN AX = 0225h BX = 6907h Return: CF clear if successful CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6908h Index: screen saver;Blank-It --------V-110225BX6908----------------------- INT 11 - Blank-It Screen Blanker - BLANK THE SCREEN AX = 0225h BX = 6908h Return: CF clear if successful CF set on error AL = error code SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6907h Index: screen saver;Blank-It --------V-110225BX6909----------------------- INT 11 - Blank-It Screen Blanker - SET HOTKEY FOR MANUAL BLANKING AX = 0225h BX = 6909h CL = key scan code (see #0135) Return: CF clear if successful CF set on error AL = error code Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems, Inc. SeeAlso: AX=0225h/BX=6900h Index: screen saver;Blank-It|hotkeys;Blank-It (Table 0135) Values for Blank-It hotkey scan code: 00h No hot key 1Dh Left CTRL 2Ah Left Shift 36h Right Shift 57h F11 58h F12 --------G-1105D7----------------------------- INT 11 CU - Borland C++ IDE - INSTALLED CALLOUT AX = 05D7h BX = product ID (0088h) Note: called by the BC++ IDE when an application calls INT 12/AX=05D7h/BX=05D7h SeeAlso: INT 12/AX=05D7h/BX=05D7h Index: installation check;Borland C++ IDE --------F-1177------------------------------- INT 11 - RainbowFAX v1.3 - SFENGINE API - OPERATIONAL CONTROL AH = 77h AL = subfunction 01h request SFENGINE start Return: AX = 0001h 02h check if SFENGINE started Return: AX = 0000h or 0001h 03h request SFENGINE stop Return: AX = 0001h 04h check if SFENGINE stopped Return: AX = 0000h or 0001h 05h installation check Return: AX = 0001h 06h uninstall??? BX:DX -> return address for successful uninstall??? Return: (at caller's address) AX = 0000h else Return: AX = FFFFh Return: ES:DX -> ASCIZ signature string "SFAX ENGINE V1.0" followed by internal data area??? SeeAlso: AH=78h,AH=79h,AH=7Ah,AH=7Ch Index: installation check;RainbowFAX|installation check;SFENGINE Index: uninstall;RainbowFAX|uninstall;SFENGINE --------F-1178------------------------------- INT 11 - RainbowFAX v1.3 - SFENGINE API - ??? AH = 78h AL = subfunction 7801h set ??? BX = new state for ??? 0000h ??? else ??? Return: AX = 0001h 7802h set ??? BX = ??? CX = ??? Return: AX = 0001h 7803h set ??? BX = new state for ??? 0000h ??? else ??? Return: AX = 0001h 78XXh invalid subfunction Return: AX = FFFFh SeeAlso: AH=77h,AH=79h,AH=7Ah,AH=7Ch --------F-1179------------------------------- INT 11 - RainbowFAX v1.3 - SFENGINE API - ??? AH = 79h AL = subfunction 01h set ??? flag Return: AX = previous state (0000h already set, 0001h clear) 02h clear ??? flag (see subfunc 01h) Return: AX = 0001h 03h set ??? flag (different from subfn 02h or 04h) Return: AX = 0001h 04h clear ??? flag (different from subfn 02h or 03h) Return: AX = 0001h else Return: AX = FFFFh SeeAlso: AH=77h,AH=78h,AH=7Ah,AH=7Ch --------F-117A------------------------------- INT 11 - RainbowFAX v1.3 - SFENGINE API - ??? AH = 7Ah AL = subfunction 01h set ??? flag Return: AX = previous state (0000h already set, 0001h clear) 02h clear ??? flag Return: AX = 0001h 03h set ??? flag (different from subfn 02h) Return: AX = 0001h else Return: AX = FFFFh SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ch --------F-117C------------------------------- INT 11 - RainbowFAX v1.3 - SFENGINE API - ??? AH = 7Ch AL = subfunction 01h set ??? flag (see also subfn 02h) Return: AX = 0001h 02h clear ??? flag (see also subfn 01h) Return: AX = 0001h else Return: AX = FFFFh SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ah --------S-11BC--DX1954----------------------- INT 11 - BNU FOSSIL - INSTALLATION CHECK AH = BCh DX = 1954h Return: AX = 1954h ES:DX -> entry point of driver (instead of INT 14) SeeAlso: INT 14/AH=04h"FOSSIL" --------d-11FF--SI6A6A----------------------- INT 11 - WD7000 SDLP interface - EXECUTE GENERIC SCSI COMMAND AH = FFh SI = 6A6Ah AL = SCSI Addressing (see #0136) CX = bytes of data to be transmitted (max FFF0h) DH = 00h DL = length of SCSI Command Descriptor Block DS:DI -> SCSI Command Descriptor Block ES:BX -> data buffer Return: CF set on error AL = error code CF clear if successful Note: because of busmaster operations with WD7000FASST avoid accessing video memory directly; check 386 memory manager for VDS support. The WD7000XTAT works with programmed IO and does not have this limitation. SeeAlso: INT 21/AX=4402h"ASPI",INT 2F/AX=7F01h Bitfields for SDLP SCSI addressing: Bit(s) Description (Table 0136) 2-0 SCSI Target LUN (logical unit number) 5-3 SCSI Target ID 7 write flag, set for write operations, clear otherwise --------T-11FFFECXFFFE----------------------- INT 11 - BACK&FORTH (before v1.62) API AX = FFFEh CX = FFFEh BX = function 00h installation check Return: AX = installation state 0001h BNFHIGH and BNFLOW both loaded 0003h only BNFHIGH loaded else neither loaded 01h ??? Return: DX:AX -> ??? 02h ??? 03h ??? 04h ??? 05h ??? switches current PSP segment and stack if BNFLOW has not yet announced itself installed 06h ??? Return: AX = ??? SeeAlso: INT 12/AX=FFFEh Index: installation check;BACK&FORTH --------B-12--------------------------------- INT 12 - BIOS - GET MEMORY SIZE Return: AX = kilobytes of contiguous memory starting at absolute address 00000h Note: this call returns the contents of the word at 0040h:0013h; in PC and XT, this value is set from the switches on the motherboard SeeAlso: INT 11,INT 2F/AX=4A06h --------K-12----CX1806----------------------- INT 12 - KEYBUI v2.0+ - INSTALLATION CHECK CX = 1806h Return: AX = kilobytes of contiguous memory starting at absolute address 00000h CX = 1960h if installed Program: KEYBUI is a resident keyboard driver by Johan Zwiekhorst which allows accented characters and box drawing on standard QWERTY keyboards; it also provides break-to-DOS and screen blanking capabilities SeeAlso: INT 14/AX=AA01h Index: screen saver;KEYBUI --------d-12----CX1807----------------------- INT 12 - PARKER v2.0+ - INSTALLATION CHECK CX = 1807h Return: AX = kilobytes of contiguous memory starting at absolute address 00000h CX = 1961h if installed Program: PARKER is an optionally-resident hard disk parking program by Johan Zwiekhorst --------G-1205D7BX05D7----------------------- INT 12 U - Borland C++ IDE - INSTALLATION CHECK AX = 05D7h (1495d) BX = 05D7h Note: the BC++ IDE will call INT 11/AX=05D7h/BX=0088h if it is loaded SeeAlso: INT 11/AX=05D7h/BX=0088h --------v-124350BX4920----------------------- INT 12 C - CPI-standard virus - "FRIEND" CHECK AX = 4350h BX = 4920h CX = AB46h DX = 554Eh Return: if friendly (not to be infected) CX:DX -> ASCIZ identity code (changes yearly) SeeAlso: AX=EC00h"VIRUS",INT 13/AX=5001h,INT 21/AX=0B56h --------T-12FFFECXFFFE----------------------- INT 12 - Back&Forth v1.62+ - API AX = FFFEh CX = FFFEh BX = function 00h installation check Return: AX = 0001h installed else not loaded 01h (reserved) 02h build program ID list (shareware Back&Forth) ES:DI -> buffer of at least 100 bytes, to be filled with words Return: AX = number of programs defined ES:DI buffer filled with AX words 02h get memory statistics (Back&Forth Professional) Return: AX = available swap memory, KBytes BX = maximum task size, KBytes DX = fixed overhead per task, excluding video/macro storage 03h switch to specified task (task need not be open yet) DX = two-letter program ID Return: AX = status 0000h if task undefined 0001h task switch will occur when safe 04h (reserved) 05h (reserved) 06h get version (documented only for Back&Forth Professional) Return: AX = version * 100 (v1.71 = 00ABh) 07h spawn program (Back&Forth Professional only???) ES:DI -> BF_SPAWN record (see #0138) Return: AX = status 0000h if no task handles free 0001h spawn will occur when safe 08h get open tasks (documented only for Back&Forth Professional) ES:DI -> task info buffer (see #0137,#0139) Return: AX = number of open tasks (max 20) Note: the supplied buffer must be large enough to hold 21 task entries 09h (reserved) ---Back&Forth Professional--- 0Ah get active clipboard filename Return: DX:AX -> ASCIZ clipboard filename 0Bh get active task number AX = active task number (00h-13h) BX = number of tasks allocated DX = maximum number of tasks 0Ch (reserved) 0Dh (reserved) 0Eh (reserved) 0Fh stuff string into keyboard buffer ES:DI -> ASCIZ string to be stuffed Return: nothing 10h check if in graphics mode Return: AX = state 0000h color text mode 0004h mono text mode FFFFh graphics mode 11h get Back&Forth Professional user number Return: AX = user number (0000h-00FFh) 12h switch task by task number DX = task number Return: AX = status 0000h attempted to switch to active task 0001h task switch will occur when safe FFFFh invalid task number 13h delete (kill) task DX = task number Return: AX = status 0000h attempted to delete the active task 0001h successfully deleted FFFFh invalid task number Note: the active task number will change if the deleted task was lower in the task list than the active task 14h get next available task handle Return: AX = next available task handle FFFFh if task table is full Program: Back & Forth is a task switcher by Progressive Solutions, Inc. SeeAlso: INT 11/AX=FFFEh Index: installation check;BACK&FORTH Format of Back&Forth task info buffer: Offset Size Description (Table 0137) 00h 21 BYTEs ASCIZ task name 15h BYTE hotkey shift state (as for INT 16/AH=02h) 16h WORD hotkey scan code 18h WORD program ID Index: hotkeys;Back&Forth SeeAlso: #0138,#0139 Format of Back&Forth Professional BF_SPAWN record: Offset Size Description (Table 0138) 00h 21 BYTEs task description 15h BYTE flag: disable hotkeys 16h WORD environment size in bytes 18h BYTE hotkey shift flags 19h WORD hotkey scancode 1Bh WORD maximum number of EMS pages 1Dh WORD required memory in KBytes 1Fh 3 BYTEs DESQview-style two-letter program ID 22h 13 BYTEs base name of program to be run (no path or extension) 2Fh 66 BYTEs directory from which to start program 71h 66 BYTEs initial current directory for program SeeAlso: #0137,#0139 Format of Back&Forth Professional BF_TASK record: Offset Size Description (Table 0139) 00h DWORD Unix-style task start time (seconds since 1/1/1970) 04h 21 BYTEs task description 19h DWORD elapsed time in task (seconds) 1Dh WORD task ID 1Fh BYTE task hotkey keyboard flags 20h WORD task hotkey scan code 22h DWORD time task was suspended/exited 26h WORD task handle SeeAlso: #0137,#0138 --------B-1300------------------------------- INT 13 - DISK - RESET DISK SYSTEM AH = 00h DL = drive (if bit 7 is set both hard disks and floppy disks reset) Return: AH = status (see #0140) CF clear if successful (returned AH=00h) CF set on error Note: forces controller to recalibrate drive heads (seek to track 0) for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems, both the master drive and the slave drive respond to the Reset function that is issued to either drive SeeAlso: AH=0Dh,AH=11h,INT 21/AH=0Dh,INT 4D/AH=00h"TI Professional" --------B-1301------------------------------- INT 13 - DISK - GET STATUS OF LAST OPERATION AH = 01h DL = drive (bit 7 set for hard disk) Return: CF clear if successful (returned status 00h) CF set on error AH = status of previous operation (see #0140) Note: some BIOSes return the status in AL; the PS/2 Model 30/286 returns the status in both AH and AL SeeAlso: AH=00h,INT 4D/AH=01h,MEM 0040h:0074h (Table 0140) Values for disk operation status: 00h successful completion 01h invalid function in AH or invalid parameter 02h address mark not found 03h disk write-protected 04h sector not found/read error 05h reset failed (hard disk) 05h data did not verify correctly (TI Professional PC) 06h disk changed (floppy) 07h drive parameter activity failed (hard disk) 08h DMA overrun 09h data boundary error (attempted DMA across 64K boundary or >80h sectors) 0Ah bad sector detected (hard disk) 0Bh bad track detected (hard disk) 0Ch unsupported track or invalid media 0Dh invalid number of sectors on format (PS/2 hard disk) 0Eh control data address mark detected (hard disk) 0Fh DMA arbitration level out of range (hard disk) 10h uncorrectable CRC or ECC error on read 11h data ECC corrected (hard disk) 20h controller failure 31h no media in drive (IBM/MS INT 13 extensions) 32h incorrect drive type stored in CMOS (Compaq) 40h seek failed 80h timeout (not ready) AAh drive not ready (hard disk) B0h volume not locked in drive (INT 13 extensions) B1h volume locked in drive (INT 13 extensions) B2h volume not removable (INT 13 extensions) B3h volume in use (INT 13 extensions) B4h lock count exceeded (INT 13 extensions) B5h valid eject request failed (INT 13 extensions) BBh undefined error (hard disk) CCh write fault (hard disk) E0h status register error (hard disk) FFh sense operation failed (hard disk) --------B-1302------------------------------- INT 13 - DISK - READ SECTOR(S) INTO MEMORY AH = 02h AL = number of sectors to read (must be nonzero) CH = low eight bits of cylinder number CL = sector number 1-63 (bits 0-5) high two bits of cylinder (bits 6-7, hard disk only) DH = head number DL = drive number (bit 7 set for hard disk) ES:BX -> data buffer Return: CF set on error if AH = 11h (corrected ECC error), AL = burst length CF clear if successful AH = status (see #0140) AL = number of sectors transferred Notes: errors on a floppy may be due to the motor failing to spin up quickly enough; the read should be retried at least three times, resetting the disk with AH=00h between attempts most BIOSes support "multitrack" reads, where the value in AL exceeds the number of sectors remaining on the track, in which case any additional sectors are read beginning at sector 1 on the following head in the same cylinder; the CONFIG.SYS command MULTITRACK can be used to force DOS to split disk accesses which would wrap across a track boundary into two separate calls the IBM AT BIOS and many other BIOSes use only the low four bits of DH (head number) since the WD-1003 controller which is the standard AT controller (and the controller that IDE emulates) only supports 16 heads AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH SeeAlso: AH=03h,AH=0Ah,AH=06h"V10DISK.SYS",AH=21h"PS/1",INT 4D/AH=02h --------B-1303------------------------------- INT 13 - DISK - WRITE DISK SECTOR(S) AH = 03h AL = number of sectors to write (must be nonzero) CH = low eight bits of cylinder number CL = sector number 1-63 (bits 0-5) high two bits of cylinder (bits 6-7, hard disk only) DH = head number DL = drive number (bit 7 set for hard disk) ES:BX -> data buffer Return: CF set on error CF clear if successful AH = status (see #0140) AL = number of sectors transferred Notes: errors on a floppy may be due to the motor failing to spin up quickly enough; the write should be retried at least three times, resetting the disk with AH=00h between attempts most BIOSes support "multitrack" writes, where the value in AL exceeds the number of sectors remaining on the track, in which case any additional sectors are written beginning at sector 1 on the following head in the same cylinder; the CONFIG.SYS command MULTITRACK can be used to force DOS to split disk accesses which would wrap across a track boundary into two separate calls the IBM AT BIOS and many other BIOSes use only the low four bits of DH (head number) since the WD-1003 controller which is the standard AT controller (and the controller that IDE emulates) only supports 16 heads AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH SeeAlso: AH=02h,AH=0Bh,AH=07h"V10DISK.SYS",AH=22h"PS/1",INT 4D/AH=03h --------B-1304------------------------------- INT 13 - DISK - VERIFY DISK SECTOR(S) AH = 04h AL = number of sectors to verify (must be nonzero) CH = low eight bits of cylinder number CL = sector number 1-63 (bits 0-5) high two bits of cylinder (bits 6-7, hard disk only) DH = head number DL = drive number (bit 7 set for hard disk) ES:BX -> data buffer (PC,XT,AT with BIOS prior to 11/15/85) Return: CF set on error CF clear if successful AH = status (see #0140) AL = number of sectors verified Notes: errors on a floppy may be due to the motor failing to spin up quickly enough; the write should be retried at least three times, resetting the disk with AH=00h between attempts this function does not compare the disk with memory, it merely checks whether the sector's stored CRC matches the data's actual CRC the IBM AT BIOS and many other BIOSes use only the low four bits of DH (head number) since the WD-1003 controller which is the standard AT controller (and the controller that IDE emulates) only supports 16 heads AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH SeeAlso: AH=02h,INT 4D/AH=04h,INT 4D/AH=06h --------B-1305------------------------------- INT 13 - FLOPPY - FORMAT TRACK AH = 05h AL = number of sectors to format CH = track number DH = head number DL = drive number ES:BX -> address field buffer (see #0141) Return: CF set on error CF clear if successful AH = status (see #0140) Notes: on AT or higher, call AH=17h first the number of sectors per track is read from the diskette parameter table pointed at by INT 1E SeeAlso: AH=05h"FIXED",AH=17h,AH=18h,INT 1E Format of floppy format address field buffer entry (one per sector in track): Offset Size Description (Table 0141) 00h BYTE track number 01h BYTE head number (0-based) 02h BYTE sector number 03h BYTE sector size (00h=128 bytes, 01h=256 bytes, 02h=512, 03h=1024) --------B-1305------------------------------- INT 13 - FIXED DISK - FORMAT TRACK AH = 05h AL = interleave value (XT-type controllers only) ES:BX -> 512-byte format buffer the first 2*(sectors/track) bytes contain F,N for each sector F = sector type 00h for good sector 20h to unassign from alternate location 40h to assign to alternate location 80h for bad sector N = sector number CH = cylinder number (bits 8,9 in high bits of CL) CL = high bits of cylinder number (bits 7,6) DH = head DL = drive Return: CF set on error CF clear if successful AH = status code (see #0140) Notes: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH for XT-type controllers on an AT or higher, AH=0Fh should be called first the IBM AT BIOS and many other BIOSes use only the low four bits of DH (head number) since the WD-1003 controller which is the standard AT controller (and the controller that IDE emulates) only supports 16 heads not all controller support sector types 20h and 40h SeeAlso: AH=05h"FLOPPY",AH=06h"FIXED",AH=07h"FIXED",AH=0Fh,AH=18h,AH=1Ah --------d-1305------------------------------- INT 13 - Future Domain SCSI BIOS - SEND SCSI MODE SELECT COMMAND AH = 05h DL = hard drive ID ES:BX -> mode select data (see #0142) Return: CF set on error CF clear if successful AH = status code (see #0140) Notes: this function can be called before AH=07h"SCSI" or AH=06h"SCSI" to format a SCSI disk with the desired parameters the mode select data below is from the SCSI-1 specification the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=06h"SCSI",AH=07h"SCSI",INT 4F/AX=8100h Format of Future Domain SCSI mode select data: Offset Size Description (Table 0142) 00h BYTE number of bytes of remaining data (12 + vendor unique length) 01h BYTE reserved (0) 02h BYTE medium type (0 for hard disk) 03h BYTE reserved (0) 04h BYTE block descriptor length (8) 05h BYTE density code (0 for hard disk) 06h 3 BYTEs (big-endian) number of blocks (000000h for entire disk) 09h BYTE reserved (0) 0Ah 3 BYTEs (big-endian) block length (512 standard, or 256) 0Dh ??? vendor-specific parameter bytes (optional) --------B-13057FSI324D----------------------- INT 13 - 2M - FORMAT TRACK AX = 057Fh SI = 324Dh ("2M") CH = track number DH = head number DL = drive number ES:BX -> boot sector of future 2M diskette Return: CF set on error CF clear if successful AH = status (see #0140) Program: 2M is a TSR developed by Ciriaco Garcia de Celis to support non standard diskettes with 820-902/1476-1558K (5.25 DD/HD) and 984-1066/1804-1886K/3608-3772K (3.5 DD/HD/ED) Notes: it is not necessary to call AH=17h/AH=18h first (will be ignored) the diskette format must always begin on cylinder 0 head 0 the boot sector can be obtained from an already-formatted 2M diskette (by calling AH=02h with head number 00h in 2M v1.x and with head number 80h for 2M v2+) the installation check for 2M must search for a "CiriSOFT:2M:1.3" or "CiriSOFT:2MX:3.0" or similar (recomended ":2M:", ":2MX:", or ":2MB:" substrings) in CiriSOFT TSR interface since 2M v2.0, the BOOT sector is emulated using the first physical sector of FAT2; the second-sixth physical sectors of FAT2 in HD or ED diskettes store the SuperBOOT code. To skip the FAT2 emulation (using FAT1) of 2M, in order to read the SuperBOOT code, head number must be 80h-81h instead 0-1 (bit 7 active) in standard read/write functions. This lets diskcopy programs format 2M target diskettes copying SuperBOOT code. If the target diskette is already 2MF formatted (containing boot code) this trick it is not necessary. when using STV technology (offset 65 of boot sector equal to 1) it is necessary to write the full track before formatting (except track 0 side 0) to complete the format and skip future CRC errors on read; in track 0 side 1 the head used must be 81h instead 1. Diskcopy programs may do a format-write-verify sequential phases to improve performance SeeAlso: AH=05h"FLOPPY",INT 2F"CiriSOFT TSR interface" --------B-1306------------------------------- INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XT,PORT) AH = 06h AL = interleave value CH = cylinder number (bits 8,9 in high bits of CL) CL = sector number DH = head DL = drive Return: AH = status code (see #0140) Note: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH SeeAlso: AH=05h"FIXED",AH=07h"FIXED" --------d-1306------------------------------- INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE WITH BAD SECTOR MAPPING AH = 06h AL = interleave (0 = default, 1 = consecutive sectors, 2 - 255 = vendor unique) DL = hard drive ID DH = defect list info (see #0143) ES:BX -> defect table A, B or C (see #0144,#0145,#0146) Return: CF set on error CF clear if successful AH = status code (see #0140) Notes: block addresses must be in ascending order (for table B, cylinder is most significant, byte from index least significant; for table C, cylinder is most significant, sector number least significant) table B defect bytes from index of FFFFFFFFh indicates that the entire track shall be reassigned table C defect sector number of FFFFFFFFh indicates that the entire track shall be reassigned the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=05h"SCSI",AH=06h"FIXED",AH=07h"SCSI" Bitfields for Future Domain SCSI defect list info: Bit(s) Description (Table 0143) 7-5 drive LUN 4 defect list is available 3 defect list is complete (erase drive's defect list) 2-0 defect table format (000=use defect table A, 100=use defect table B, 101=use defect table C) Format of Future Domain SCSI defect table A: Offset Size Description (Table 0144) 00h WORD number of bytes remaining in table 02h BYTE reserved (0) 03h BYTE reserved (0) 04h WORD (big-endian) defect list length (4*number of defects) 06h 4 DWORDs (big-endian) defect block addresses Format of Future Domain SCSI defect table B: Offset Size Description (Table 0145) 00h WORD number of bytes remaining in table 02h BYTE reserved (0) 03h BYTE reserved (0) 04h WORD (big-endian) defect list length (8*number of defects) 06h 8N BYTEs defect list [array] (see #0147) Format of Future Domain SCSI defect table C: Offset Size Description (Table 0146) 00h WORD number of bytes remaining in table 02h BYTE reserved (0) 03h BYTE reserved (0) 04h WORD (big-endian) defect list length (8*number of defects) 06h 8N BYTEs defect list [array] (see #0147) Format of Future Domain SCSI defect list entry: Offset Size Description (Table 0147) 00h 3 BYTEs (big-endian) cylinder number of defect 03h BYTE head number of defect 04h DWORD (big-endian) defect bytes from index --------d-1306------------------------------- INT 13 - Adaptec AHA-154xA/Bustek BT-542 BIOS - IDENTIFY SCSI DEVICES AH = 06h Return: AH = status code (see #0140) CF clear if successful AL = first drive supported (80h nonconcurrent operation, 81h concurrent operation) CF set on error Desc: determine the number of the first supported SCSI drive Note: the return value is 80h when two SCSI drives are supported, 81h if only one SCSI drive is installed SeeAlso: AH=08h --------d-1306------------------------------- INT 13 - V10DISK.SYS - READ DELETED SECTORS AH = 06h AL = number of sectors CH = cylinder number (bits 8,9 in high bits of CL) CL = sector number DH = head DL = drive ES:BX -> buffer Return: AH = status code (see #0140) Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies SeeAlso: AH=02h,AH=07h"V10DISK.SYS" --------B-1307------------------------------- INT 13 - FIXED DISK - FORMAT DRIVE STARTING AT GIVEN TRACK (XT,PORT) AH = 07h AL = interleave value (XT only) ES:BX = 512-byte format buffer (see AH=05h) CH = cylinder number (bits 8,9 in high bits of CL) CL = sector number DH = head DL = drive Return: AH = status code (see #0140) Note: AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more than 1024 cylinders by placing bits 10 and 11 of the cylinder number into bits 6 and 7 of DH SeeAlso: AH=05h"FIXED",AH=06h"FIXED",AH=1Ah --------d-1307------------------------------- INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE AH = 07h AL = interleave (0 = default, 1 = consecutive sectors, 2 - 255 = vendor unique) DL = hard drive ID Return: CF set on error CF clear if successful AH = status code (see #0140) SeeAlso: AH=05h"SCSI",AH=06h"SCSI",AH=07h"FIXED" --------d-1307------------------------------- INT 13 - V10DISK.SYS - WRITE DELETED SECTORS AH = 07h AL = number of sectors CH = cylinder number (bits 8,9 in high bits of CL) CL = sector number DH = head DL = drive ES:BX -> buffer Return: AH = status code (see #0140) Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies SeeAlso: AH=03h,AH=06h"V10DISK.SYS" --------B-1308------------------------------- INT 13 - DISK - GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI) AH = 08h DL = drive (bit 7 set for hard disk) Return: CF set on error AH = status (07h) (see #0140) CF clear if successful AH = 00h BL = drive type (AT/PS2 floppies only) (see #0148) CH = low eight bits of maximum cylinder number CL = maximum sector number (bits 5-0) high two bits of maximum cylinder number (bits 7-6) DH = maximum head number DL = number of drives ES:DI -> drive parameter table (floppies only) Notes: may return successful even though specified drive is greater than the number of attached drives of that type (floppy/hard); check DL to ensure validity for systems predating the IBM AT, this call is only valid for hard disks, as it is implemented by the hard disk BIOS rather than the ROM BIOS Toshiba laptops with HardRAM return DL=02h when called with DL=80h, but fail on DL=81h. The BIOS data at 40h:75h correctly reports 01h. may indicate only two drives present even if more are attached; to ensure a correct count, one can use AH=15h to scan through possible drives for BIOSes which reserve the last cylinder for testing purposes, the cylinder count is automatically decremented SeeAlso: AH=06h"Adaptec",AH=13h"SyQuest",AH=48h,AH=15h,INT 1E,INT 41 (Table 0148) Values for diskette drive type: 01h 360K 02h 1.2M 03h 720K 04h 1.44M 05h ??? (reportedly an obscure drive type shipped on some IBM machines) 2.88M on some machines (at least AMI 486 BIOS) 06h 2.88M --------d-1308------------------------------- INT 13 - V10DISK.SYS - SET FORMAT AH = 08h AL = number of sectors CH = cylinder number (bits 8,9 in high bits of CL) CL = sector number DH = head DL = drive Return: AH = status code (see #0140) Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies Note: details not available SeeAlso: AH=03h,AH=06h"V10DISK.SYS" --------y-130800DLF0------------------------- INT 13 - SecureDrive - INSTALLATION CHECK AX = 08000h DL = F0h Return: AX = EDCBh for version 1.0-1.2 AX = EDCCh for version 1.3 CX = code segment DX = data address within code segment Program: SecureDrive by Mike Ingle <mikeingle@delphi.com> allows you to create an encrypted partition on your harddisk. --------B-1309------------------------------- INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (AT,PS) AH = 09h DL = drive (80h for first, 81h for second) Return: CF clear if successful CF set on error AH = status (see #0140) Notes: on the PC and XT, this function uses the parameter table pointed at by INT 41 on the AT and later, this function uses the parameter table pointed at by INT 41 if DL=80h, and the parameter table pointed at by INT 46 if DL=81h SeeAlso: INT 41,INT 46 --------B-130A------------------------------- INT 13 - HARD DISK - READ LONG SECTOR(S) (AT and later) AH = 0Ah AL = number of sectors CH = low eight bits of cylinder number CL = sector number (bits 5-0) high two bits of cylinder number (bits 7-6) DH = head number DL = drive number (80h = first, 81h = second) ES:BX -> data buffer Return: CF clear if successful CF set on error AH = status (see #0140) AL = number of sectors transferred Notes: this function reads in four to seven bytes of error-correcting code along with each sector's worth of information data errors are not automatically corrected, and the read is aborted after the first sector with an ECC error used for diagnostics only on PS/2 systems SeeAlso: AH=02h,AH=0Bh --------B-130B------------------------------- INT 13 - HARD DISK - WRITE LONG SECTOR(S) (AT and later) AH = 0Bh AL = number of sectors CH = low eight bits of cylinder number CL = sector number (bits 5-0) high two bits of cylinder number (bits 7-6) DH = head number DL = drive number (80h = first, 81h = second) ES:BX -> data buffer Return: CF clear if successful CF set on error AH = status (see #0140) AL = number of sectors transferred Notes: each sector's worth of data must be followed by four to seven bytes of error-correction information used for diagnostics only on PS/2 systems SeeAlso: AH=03h,AH=0Ah --------B-130C------------------------------- INT 13 - HARD DISK - SEEK TO CYLINDER AH = 0Ch CH = low eight bits of cylinder number CL = sector number (bits 5-0) high two bits of cylinder number (bits 7-6) DH = head number DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status (see #0140) SeeAlso: AH=00h,AH=02h,AH=0Ah,AH=47h --------d-130D------------------------------- INT 13 - HARD DISK - RESET HARD DISKS AH = 0Dh DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status (see #0140) Notes: reinitializes the hard disk controller, resets the specified drive's parameters, and recalibrates the drive's heads (seek to track 0) for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems, both the master drive and the slave drive respond to the Reset function that is issued to either drive not for PS/2 ESDI drives SeeAlso: AH=00h,INT 21/AH=0Dh --------B-130E------------------------------- INT 13 - HARD DISK - READ SECTOR BUFFER (XT only) AH = 0Eh DL = drive number (80h = first, 81h = second hard disk) ES:BX -> buffer Return: CF set on error CF clear if successful AH = status code (see #0140) Notes: transfers controller's sector buffer. No data is read from the drive used for diagnostics only on PS/2 systems SeeAlso: AH=0Ah --------B-130F------------------------------- INT 13 - HARD DISK - WRITE SECTOR BUFFER (XT only) AH = 0Fh DL = drive number (80h = first, 81h = second hard disk) ES:BX -> buffer Return: CF set on error CF clear if successful AH = status code (see #0140) Notes: does not write data to the drive should be called before formatting to initialize an XT-type controller's sector buffer used for diagnostics only on PS/2 systems SeeAlso: AH=0Bh --------B-1310------------------------------- INT 13 - HARD DISK - CHECK IF DRIVE READY AH = 10h DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) --------B-1311------------------------------- INT 13 - HARD DISK - RECALIBRATE DRIVE AH = 11h DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) Note: causes hard disk controller to seek the specified drive to cylinder 0 SeeAlso: AH=00h,AH=0Ch,AH=19h"FIXED DISK" --------B-1312------------------------------- INT 13 - HARD DISK - CONTROLLER RAM DIAGNOSTIC (XT,PS) AH = 12h DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status code (see #0140 at AH=01h) AL = 00h SeeAlso: AH=13h,AH=14h --------d-1312------------------------------- INT 13 - Future Domain SCSI CONTROLLER - STOP SCSI DISK AH = 12h DL = hard drive ID Return: CF set on error CF clear if successful AH = status code (see #0140 at AH=01h) Notes: available at least on the TMC-870 8-bit SCSI controller BIOS v6.0A if the given drive is a SCSI device, the SCSI Stop Unit command is sent and either "Disk prepared for shipping" or "Disk Stop command failed" is displayed the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) --------d-1312------------------------------- INT 13 - SyQuest - START/STOP SCSI DISK AH = 12h AL = subfunction 00h start disk 01h stop disk CX = wait flag 00h wait for ready 01h don't wait for ready DL = hard drive ID (bit 7 for hard disks must be set) Return: CF set on error CF clear if successful AH = status 00h successful 01h invalid function request 80h timeout SeeAlso: AH=12h"Future Domain",AH=13h"SyQuest" --------B-1313------------------------------- INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XT,PS) AH = 13h DL = drive number (80h = first, 81h = second hard disk) Return: CF set on error CF clear if successful AH = status code (see #0140 at AH=01h) AL = 00h SeeAlso: AH=12h"HARD DISK",AH=14h"HARD DISK" --------d-1313------------------------------- INT 13 - SyQuest - READ DRIVE PARAMATERS (for DOS 5+) AH = 13h DL = drive ID (bit 7 set for hard disks) Return: CF set on error AH = status (07h) (see #0140 at AH=01h) CF clear if successful AH = 00h BL = drive type (AT/PS2 floppies only) (see #0148) CH = low eight bits of maximum cylinder number CL = maximum sector number (bits 5-0) high two bits of maximum cylinder number (bits 7-6) DH = maximum head number DL = number of drives ES:DI -> drive parameter table (floppies only) Notes: the return values are identical to the standard INT 13/AH=08h, but the number of drives is not limited to 2, so scanning all possible drive numbers with the Read DASD Type call (AH=15h) should generally be preferred to determine the number of drives attached to the system. SeeAlso: AH=08h,AH=12h"SyQuest",AH=15h,AH=59h"SyQuest" --------B-1314------------------------------- INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC AH = 14h Return: CF set on error CF clear if successful AH = status code (see #0140 at AH=01h) AL = 00h SeeAlso: AH=12h,AH=13h --------B-1315------------------------------- INT 13 - DISK - GET DISK TYPE (XT 1/10/86 or later,XT286,AT,PS) AH = 15h DL = drive number (bit 7 set for hard disk) Return: CF clear if successful AH = type code 00h no such drive 01h floppy without change-line support 02h floppy with change-line support 03h hard disk CX:DX = number of 512-byte sectors CF set on error AH = status (see #0140 at AH=01h) Note: SyQuest can report type 01h or 02h for 'hard disks', since its media is removable SeeAlso: AH=08h,AH=16h,AH=17h,AH=19h"SCSI" --------B-1316------------------------------- INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XT 1/10/86 or later,XT286,AT,PS) AH = 16h DL = drive number (00h-7Fh) Return: CF clear if change line inactive AH = 00h (disk not changed) CF set if change line active AH = status 01h invalid command (SyQuest) 06h change line active or not supported 80h drive not ready or not present Notes: call AH=15h first to determine whether the drive supports a change line this call also clears the media-change status, so that a disk change is only reported once SeeAlso: AH=15h,AH=49h --------B-1317------------------------------- INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS) AH = 17h AL = format type 01h = 320/360K disk in 360K drive 02h = 320/360K disk in 1.2M drive 03h = 1.2M disk in 1.2M drive 04h = 720K disk in 720K or 1.44M drive DL = drive number Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) Note: this function does not handle 1.44M drives; use AH=18h instead SeeAlso: AH=15h,AH=18h --------d-131700----------------------------- INT 13 - Future Domain SCSI CONTROLLER - GET INQUIRY INFO FROM SCSI DEVICE AX = 1700h CL = length of buffer DL = hard drive ID ES:BX -> buffer for info (see #0149) Return: CF clear if successful CH = number of bytes returned in buffer??? CF set on error AH = status code (see #0140 at AH=01h) Notes: this function is not available with 8-bit controller ROM versions < 7.0 information block bytes 5-n are vendor-specific in older SCSI devices the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=18h"SCSI",AH=1Bh"SCSI" Format of Future Domain SCSI inquiry information block: Offset Size Description (Table 0149) 00h BYTE device type bits 0-4: peripheral device type (see #0150) bits 5-7: peripheral qualifier (see #0151) 01h BYTE device type modifier bits 0-6: device type modifier bit 7: removable medium 02h BYTE SCSI version (see #0152) 03h BYTE data format/capabilities (see #0153) 04h BYTE additional data length (total remaining bytes) 05h 2 BYTEs reserved 07h BYTE device capabilities (see #0154) 08h 8 BYTEs vendor identification (space-padded ASCII) 10h 8 BYTEs product identification (space-padded ASCII) 20h 4 BYTEs product revision level (space-padded ASCII) 24h 20 BYTEs vendor specific 38h 40 BYTEs reserved 60h var vendor specific parameters (Table 0150) Values for Future Domain SCSI peripheral device type: 00h direct-access device (e.g., magnetic disk) 01h sequential-access device (e.g., magnetic tape) 02h printer device 03h processor device 04h write-once device (e.g., some optical disks) 05h CD-ROM device 06h scanner device 07h optical memory device (e.g., some optical disks) 08h medium changer device (e.g., jukeboxes) 09h communications device 0Ah (defined by ASC IT8) 0Bh (defined by ASC IT8) 0Ch-1Eh reserved 1Fh unknown or no device type (Table 0151) Values for Future Domain SCSI peripheral qualifier: 000b device is currently connected to this logical unit and available 001b target is capable of supporting the specified peripheral, but the physical device is not currently connected to this logical unit 010b reserved 011b target can't support a physical device on this logical unit 1xxb vendor specific Bitfields for Future Domain SCSI version: Bit(s) Description (Table 0152) 0-2 ANSI-approved version 000 device might or might not comply to ANSI standard 001 device complies to ANSI SCSI-1 010 device complies to ANSI SCSI-2 other reserved 3-5 ECMA version 6-7 ISO version Bitfields for Future Domain SCSI data format/capabilities: Bit(s) Description (Table 0153) 0-2 response data format 000 information block is as specified in SCSI-1 001 information block is as specified in CCS 010 information block is as specified in SCSI-2 other reserved 4-5 reserved 6 terminate I/O process supported 7 asynchronous event notification supported Bitfields for Future Domain SCSI device capabilities: Bit(s) Description (Table 0154) 0 device responds to RESET with a hard RESET 1 tagged command queuing supported 2 reserved 3 linked commands supported 4 synchronous data transfer supported 5 16-transfers supported 6 32-transfers supported 7 relative addressing supported --------B-1318------------------------------- INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS) AH = 18h DL = drive number CH = lower 8 bits of highest cylinder number (number of cylinders - 1) CL = sectors per track (bits 0-5) top 2 bits of highest cylinder number (bits 6,7) Return: AH = status 00h requested combination supported 01h function not available 0Ch not supported or drive type unknown 80h there is no disk in the drive ES:DI -> 11-byte parameter table (see #0572 at INT 1E) SeeAlso: AH=05h,AH=07h,AH=17h --------d-1318------------------------------- INT 13 - Future Domain SCSI BIOS - GET SCSI CONTROLLER INFORMATION AH = 18h DL = hard drive ID Return: CF set on error AH = status code (see #0140 at AH=01h) CF clear if successful AX = 4321h (magic number) CX = controller family code (see #0155) ---if family code=0200h DH = number of exclusively ROM-controlled SCSI devices DL = canonical SCSI device number for specified drive ---if family code <> 0200h BH = number of exclusively ROM-controlled SCSI devices BL = canonical SCSI device number for specified drive Notes: also sets an internal flag (non-resettable) which prevents some controller messages from being displayed, allows writes to removable devices (use caution!), and enables the INT 13 interface for more than one drive (i.e. DL >= 81h) in at least some ROM versions the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=05h"SCSI",AX=1700h"SCSI",AH=1Bh"SCSI",INT 4F/AX=8100h (Table 0155) Values for Future Domain SCSI controller family code: 0200h TMC-1680/? (ROM 3.0) 0203h TMC-1650/1660/1670/1680 (ROM 2.0) 040Ah TMC-820/830/840/850/860/870/875/880/885 (ROM <= 6.0A) 050Dh TMC-840/841/880/881 (ROM 5.2D) 0700h TMC-830/850/860/875/885 (ROM 7.0) --------B-1318--CXD2C9----------------------- INT 13 - XDF.COM - API AH = 18h CX = D2C9h ("R"+80h, "I"+80h = Roger Ivey) DX = 0 BX = function 0000h installation check Return: AH = 0Ch CX = 7269h ("ri" = Roger Ivey) ES = segment of driver CF set 2F64h ("/d") disable the driver Return: AH = 0Ch ES:BX = pointer to activation flag (it is set to 0: set it to 1 to enable the driver again) CX = 7269h CF set 2F75h ("/u") unload the driver (restore interrupts & free memory) Return: AH = 0Ch DL = 55h ("U") if successful = 0h if fails CX = 7269h ES = segment of driver CF set AL, BX, DH, and DI destroyed Program: XDF is a TSR provided with PC-DOS 7.0 to support XDF 1.84M disks, developed by Roger D. Ivey Note: After disabling or enabling the driver, a disk change must be performed or simulated to reset the driver. --------B-1319------------------------------- INT 13 - FIXED DISK - PARK HEADS ON ESDI DRIVE (XT286,PS) AH = 19h DL = drive Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) SeeAlso: AH=11h --------d-1319------------------------------- INT 13 - Future Domain SCSI CONTROLLER - REINITIALIZE DRIVE AH = 19h DL = hard drive ID Return: CF set on error AH = status code (see #0140 at AH=01h) CF clear if successful AH = disk type (03h = fixed disk) CX:DX = number of 512-byte sectors Notes: sends SCSI Read Capacity command to get number of logical blocks and adjusts the result for 512-byte sectors displays either "Error in Read Capacity Command" or "nnn Bytes per sector" (nnn=256 or 512, the only sizes supported in the translation code) should probably be called when a removable device has its media changed returns the same values as AH=15h the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=15h,AH=1Ah,INT 4F/AX=8100h --------d-131A------------------------------- INT 13 - ESDI FIXED DISK - FORMAT UNIT (PS) AH = 1Ah AL = defect table entry count CL = format modifiers (see #0156) DL = drive (80h,81h) ES:BX -> defect table (see #0157), ignored if AL=00h Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) Note: if periodic interrupt selected, INT 15/AH=0Fh is called after each cylinder is formatted SeeAlso: AH=07h,INT 15/AH=0Fh Bitfields for ESDI format modifiers: Bit(s) Description (Table 0156) 4 generate periodic interrupt 3 perform surface analysis 2 update secondary defect map 1 ignore secondary defect map 0 ignore primary defect map Format of defect table entry [array]: Offset Size Description (Table 0157) 00h 3 BYTEs relative sector address (little-endian) 03h BYTE flags and defect count bit 7: last logical sector on track bit 6: first logical sector on track bit 5: last logical sector on cylinder bit 4: logical sectors are pushed onto next track bits 3-0: number of defects pushed from previous cylinder --------d-131A------------------------------- INT 13 - Future Domain SCSI CONTROLLER - GET SCSI PARTIAL MEDIUM CAPACITY AH = 1Ah CH = track (bits 8,9 in high bits of CL) CL = sector (01h to number of sectors/track for drive) DH = head DL = hard drive ID Return: CF set on error AH = status code (see #0140 at AH=01h) CX:DX = logical block number of last quickly-accessible block after given block Notes: sends SCSI Read Capacity command with the PMI bit set to obtain the logical block address of the last block after which a substantial delay in data transfer will be encountered (usually the last block on the current cylinder). No translation to 512 byte sectors is performed on the result if data is stored on the disk in other than 512 byte sectors. the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=15h,AH=19h"SCSI" --------d-131B------------------------------- INT 13 - ESDI FIXED DISK - GET MANUFACTURING HEADER AH = 1Bh AL = number of sectors to read DL = drive ES:BX -> buffer for manufacturing header (defect list) Return: CF set on error CF clear if successful AH = status Note: manufacturing header format (Defect Map Record format) can be found in IBM 70MB, 115MB Fixed Disk Drives Technical Reference the first sector read contains the manufacturing header with the number of defect entries and the beginning of the defect map; the remaining sectors contain the remainder of the defect map --------d-131B------------------------------- INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO SCSI DISK INFO BLOCK AH = 1Bh DL = hard drive ID Return: CF set on error AH = status code (see #0140 at AH=01h) CF clear if successful ES:BX -> SCSI disk information block (see #0158) Notes: also sets a non-resettable flag which prevents some controller messages from being displayed the TMC-950 does not support any Future Domain BIOS calls; instead, it provides a full CAM implementation (see INT 4F/AX=8100h) SeeAlso: AH=18h"SCSI",AH=1Ch"SCSI" Format of Future Domain SCSI disk information block: Offset Size Description (Table 0158) 00h BYTE drive physical information (see #0159) 01h WORD translated number of cylinders 03h BYTE translated number of heads 04h BYTE translated number of sectors per track (17, 34, or 63) 05h BYTE drive address bits 0-2: logical unit number bits 3-5: device number 06h BYTE 01h at initialization 07h BYTE sense code byte 00h, or extended sense code byte 0Ch 08h BYTE 00h 09h BYTE 00h or extended sense code byte 02h (sense key) 0Ah BYTE 00h 0Bh 10 BYTEs copy of Command Descriptor Block (CDB) 15h DWORD translated number of sectors on device Bitfields for Future Domain SCSI device physical information: Bit(s) Description (Table 0159) 0 ??? 1 device uses parity 2 256 bytes per sector instead of 512 3 don't have capacity yet??? 4 disk is removable 5 logical unit number is not present --------d-131C------------------------------- INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO FREE CONTROLLER RAM AH = 1Ch DL = hard drive ID (any valid SCSI hard disk) Return: CF set on error AH = status code (see #0140 at AH=01h) CF clear if successful ES:BX -> first byte of free RAM on controller Notes: the Future Domain TMC-870 contains 1024 bytes of RAM at offsets 1800h to 1BFFh on-board the controller for storing drive information and controller status; ES:BX points to the first byte available for other uses ES contains the segment at which the controller resides; the controller's two memory-mapped I/O ports are at offsets 1C00h, 1E00h SeeAlso: AH=1Bh"SCSI" --------d-131C------------------------------- INT 13 U - ESDI FIXED DISK - ??? AH = 1Ch AL = subfunction (01h-06h) DL = drive (80h,81h) ??? Return: ??? Note: these functions perform a controller command 0612h without DMA --------d-131C08----------------------------- INT 13 U - ESDI FIXED DISK - GET COMMAND COMPLETION STATUS AX = 1C08h DL = drive (80h,81h) ES:BX -> buffer for Command Complete Status Block (see #0160) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) SeeAlso: AX=1C09h,AX=1C0Ah Format of ESDI Command Complete Status Block: Offset Size Description (Table 0160) 00h BYTE 07h 01h BYTE size of block in words (07h) 02h BYTE command error code (see #0161) 03h BYTE command status code (see #0162) 04h BYTE device error code, group 1 (see #0163) 05h BYTE device error flags, group 2 (see #0164) 06h WORD number of unprocessed sectors due to abnormal termination 08h DWORD last Relative Sector Address processed by command 0Ch WORD number of sectors corrected by ECC codes (Table 0161) Values for ESDI command error code: 00h successful 01h parameter invalid 02h unknown function 03h unsupported command 04h command cancelled 05h unknown function 06h controller diagnostics failed 07h formatting failed 08h format error in primary map 09h format error in secondary map 0Ah diagnostic failure during formatting 0Bh warning: secondary map too large during formatting 0Ch warning: non-zero defect 0Dh system checksum error during formatting 0Eh warning: incompatible device 0Fh warning: push table overflowed 10h warning: more than 15 sectors pushed to next cylinder 11h internal hardware error 12h warning: errors found while verifying sectors 13h invalid device FFh device error (Table 0162) Values for ESDI command status code: 01h successful 03h successful after ECC 05h successful after retries 06h format partially completed 07h successful after ECC and retries 08h command completed with warning (see #0161) 09h abort complete 0Ah reset complete 0Bh data transfer ready (no status block) 0Ch command completed with failure (see #0163,#0164) 0Dh DMA error 0Eh command block error (see #0161) 0Fh bad attention code (Table 0163) Values for ESDI device error code, group 1: 00h successful 01h seek fault detected by device 02h interface fault 03h sector ID not found 04h disk not formatted 05h unrecoverable ECC error 06h ECC error in sector ID 07h invalid relative sector address 08h timeout 09h sector defective 0Ah disk changed (removable media) 0Bh selection error 0Ch write protected (removable media) 0Dh write fault 0Eh read fault 0Fh no index or sector pulse 10h device not ready 11h seek error detected by adapter 12h bad format 13h volume overflow 14h data address mark not found 15h sector ID not found 16h missing device configuration data 17h first/last relative sector flags missing 18h track empty 81h timeout while waiting for stop 82h timeout while waiting for end of data transfer 84h stopped awaiting data transfer during formatting 85h timeout while waiting for head switch 86h timeout while awaiting DMA completion Bitfields for ESDI device error flags, group 2: Bit(s) Description (Table 0164) 7-5 unused 4 ready 3 selected 2 write fault 1 on track 0 0 seek/command complete --------d-131C09----------------------------- INT 13 U - ESDI FIXED DISK - GET DEVICE STATUS AX = 1C09h DL = drive (80h,81h) ES:BX -> buffer for Device Status Block (see #0165) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) SeeAlso: AX=1C08h,AX=1C0Ah Format of ESDI Device Status Block: Offset Size Description (Table 0165) 00h BYTE 08h 01h BYTE number of words in block (09h) 02h BYTE error flags 03h BYTE unused 04h BYTE command error code (see #0161) 05h BYTE command status code (see #0162) 06h WORD ESDI standard status 08h 5 WORDs ESDI vendor-specific status codes --------d-131C0A----------------------------- INT 13 U - ESDI FIXED DISK - GET DEVICE CONFIGURATION AX = 1C0Ah DL = drive (80h,81h) ES:BX -> buffer for Drive Configuration Status Block (see #0166) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) Note: device configuration format can be found in IBM ESDI Fixed Disk Drive Adapter/A Technical Reference SeeAlso: AX=1C08h,AX=1C0Bh,AX=1C0Ch Format of ESDI Drive Configuration Status Block: Offset Size Description (Table 0166) 00h BYTE 09h 01h BYTE number of words in block (06h) 02h BYTE flags 03h BYTE number of spare sectors per cylinder 04h DWORD total number of usable sectors 08h WORD total number of cylinders 0Ah BYTE tracks per cylinder 0Bh BYTE sectors per track --------d-131C0B----------------------------- INT 13 U - ESDI FIXED DISK - GET ADAPTER CONFIGURATION AX = 1C0Bh ES:BX -> buffer for Controller Configuration Status Block (see #0167) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) SeeAlso: AX=1C0Ch Format of ESDI Controller Configuration Status Block: Offset Size Description (Table 0167) 00h BYTE E9h 01h BYTE number of words in block (06h) 02h WORD unused (0000h) 04h DWORD controller microcode revision level 08h 2 WORDs unused (0000h) --------d-131C0C----------------------------- INT 13 U - ESDI FIXED DISK - GET POS INFORMATION AX = 1C0Ch ES:BX -> buffer for POS Information Status Block (see #0168) Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) SeeAlso: AX=1C0Bh Format of ESDI POS Information Status Block: Offset Size Description (Table 0168) 00h BYTE EAh 01h BYTE number of words in block (05h) 02h WORD magic value FFDDh 04h BYTE POS register 3 05h BYTE POS register 2 06h BYTE POS register 5 (unused, FFh) 07h BYTE POS register 4 (unused, FFh) 08h BYTE POS register 7 (unused, FFh) 09h BYTE POS register 6 (unused, FFh) --------d-131C0D----------------------------- INT 13 U - ESDI FIXED DISK - ??? AX = 1C0Dh DL = drive (80h,81h) ??? Return: ??? Note: invokes controller command 0614h without DMA SeeAlso: AH=1Ch"ESDI",AX=1C0Fh --------d-131C0E----------------------------- INT 13 U - ESDI FIXED DISK - TRANSLATE RBA TO ABA AX = 1C0Eh CH = low 8 bits of cylinder number CL = sector number, high two bits of cylinder number in bits 6 and 7 DH = head number DL = drive number (80h,81h) ES:BX -> ABA number Return: CF set on error CF clear if successful AH = status (see #0140 at AH=01h) Note: ABA (absolute block address) format can be found in IBM ESDI Adapter Technical Reference by using its Device Configuration Status Block --------d-131C0F----------------------------- INT 13 U - ESDI FIXED DISK - ??? AX = 1C0Fh DL = drive (80h,81h) ??? Return: ??? Note: invokes controller command 0614h without DMA SeeAlso: AH=1Ch"ESDI",AX=1C0Dh,AX=1C12h --------d-131C12----------------------------- INT 13 U - ESDI FIXED DISK - ??? AX = 1C12h DL = drive (80h,81h) ??? Return: ??? Note: invokes controller command 0612h without DMA SeeAlso: AH=1Ch"ESDI",AX=1C0Fh --------c-131D------------------------------- INT 13 - IBMCACHE.SYS - CACHE STATUS AH = 1Dh AL = subfunction 01h get status record DL = drive??? Return: ES:BX -> status record (see #0169) CF set on error AH = error code 02h set cache status ES:BX -> status record (see #0169) DL = drive??? Return: CF set on error Format of IBMCACHE.SYS status record: Offset Size Description (Table 0169) 00h DWORD total number of read requests 04h DWORD total number of hits 08h DWORD number of physical disk reads 0Ch DWORD total number of sectors requested by physical disk reads 10h 6 BYTEs ??? 16h DWORD pointer to start of error list (see #0170) 1Ah DWORD pointer to end of error list 1Eh WORD ??? 20h BYTE using extended memory if nonzero 21h BYTE ??? 22h 4 BYTEs ASCII version number 26h WORD cache size in KB 28h WORD sectors per page Format of IBMCACHE.SYS error list: Offset Size Description (Table 0170) 00h DWORD relative block address of bad page 04h BYTE drive 05h BYTE sector bit-map 06h WORD next error --------d-131F------------------------------- INT 13 - SyQuest - DOOR LATCH/DOOR BUTTON DETECT AH = 1Fh AL = subfunction 00h allow media removal 01h prevent media removal (lock door) DL = drive ID (bit 7 set for hard disks) Return: CF clear if successful AH = 00h CF set on error AH = error code 00h successful 01h invalid function request 80h timeout DDh media change requested SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=59h"SyQuest" --------d-1320------------------------------- INT 13 - DISK - ??? (Western Digital "Super BIOS") AH = 20h ??? Return: ??? Notes: returns some kind of status related to whether the drive contains its default media type QEMM v6.00 calls INT 13/AX=2000h/DL=81h in some cases --------b-1320------------------------------- INT 13 U - Compaq DESKPRO/i - GET CURRENT MEDIA FORMAT AH = 20h DL = drive number (00h,01h) Return: CF clear if successful AL = media type (see #0171) CF set on error AH = error code 31h no such drive 32h incorrect drive type stored in CMOS Note: this function is supported by the 3/8/93 ROM BIOS, but only partially (AL is always 00h when successful) by the 8/3/93 version (Table 0171) Values for Compaq diskette media type: 03h 720K 04h 1.44M 06h 2.88M 0Ch 360K 0Dh 1.2M 0Eh ??? 0Fh ??? (1024-byte sectors) --------c-1320------------------------------- INT 13 u - QUICKCACHE II v4.20 - DISMOUNT AH = 20h AL = drive (00h = A:, etc. or 7Fh for all removable drives??? or FFh for all drives) Return: AX = status (0000h successful) Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and Associates, Inc. Desc: flush any dirty buffers for the specified drive(s) and then discard those sector buffers SeeAlso: AH=21h"QUICKCACHE",AH=22h"QUICKCACHE",AH=28h --------d-1321------------------------------- INT 13 - HARD DISK - PS/1 and newer PS/2 - READ MULTIPLE DISK SECTORS AH = 21h AL = number of sectors to write CH = low byte of 12-bit cylinder number CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7) DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7) DL = drive number (80h,81h) ES:BX -> buffer for data to be read Return: CF clear if successful ES:BX buffer filled CF set on error AH = status (see #0140 at AH=01h) Desc: read from the disk using the Multiple Block mode available on newer IDE drives and some hard disk controllers, which generates an interrupt only after the end of transferring a group of sectors rather than after each sector Notes: must call AH=24h"PS/1" before using this function input values in CL and DH are not range-checked the byte at address 0040h:0074h is set to the status of the operation SeeAlso: AH=02h,AH=22h"PS/1",AH=23h"PS/1",AH=24h"PS/1" --------c-1321------------------------------- INT 13 u - QUICKCACHE II v4.20 - FLUSH CACHE AH = 21h Return: AX = status (0000h successful) Desc: immediately write all dirty sectors back to disk SeeAlso: AH=25h"QUICKCACHE",AH=2Eh,AH=2Fh --------d-1322------------------------------- INT 13 - HARD DISK - PS/1 and newer PS/2 - WRITE MULTIPLE DISK SECTORS AH = 22h AL = number of sectors to write CH = low byte of 12-bit cylinder number CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7) DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7) DL = drive number (80h,81h) ES:BX -> buffer containing data to be written Return: CF clear if successful CF set on error AH = status (see #0140 at AH=01h) Desc: write to the disk using the Multiple Block mode available on newer IDE drives and some hard disk controllers, which generates an interrupt only after the end of transferring a group of sectors rather than after each sector Notes: must call AH=24h"PS/1" before using this function input values in CL and DH are not range-checked the byte at address 0040h:0074h is set to the status of the operation SeeAlso: AH=03h,AH=21h"PS/1",AH=23h"PS/1",AH=24h"PS/1" --------c-1322------------------------------- INT 13 u - QUICKCACHE II v4.20 - ENABLE/DISABLE CACHE AH = 22h AL = new state (00h disabled, 01h enabled) Return: AX = status (0000h successful) Note: enables/disables caching of all drives SeeAlso: AH=2Ch,AH=2Dh,AH=32h,AH=33h,AH=A3h,AH=A4h --------d-1323------------------------------- INT 13 U - HARD DISK - PS/1 and newer PS/2 - SET CONTROLLER FEATURES REGISTER AH = 23h AL = feature number (see #0172) DL = drive number (80h,81h) ??? Return: CF clear if successful CF set on error AH = status (see #0140 at AH=01h) SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=24h"PS/1",AH=25h"PS/1" (Table 0172) Values for PS/1 hard disk feature number: 01h select 8-bit data transfers instead of 16-bit 02h enable write cache 22h Write Same, user-specified area 33h disable retries 44h set number of ECC bytes for read long/write long (see AH=0Ah,AH=0Bh) 54h set cache segments 55h disable lookahead 66h disable reverting to power-on defaults 77h disable error correctioni 81h select 16-bit data transfers (default) 82h disable write cache 88h enable error correction (default) 99h enable retries (default) AAh enable lookahead BBh set ECC length for read long/write long to four bytes CCh enable reverting to power-on defaults DDh Write Same, entire disk --------c-1323------------------------------- INT 13 U - QUICKCACHE II v4.20 - GET ??? ADDRESS AH = 23h Return: AX = status (0000h successful) ES = segment of ??? data --------d-1324------------------------------- INT 13 - HARD DISK - PS/1 and newer PS/2 - SET MULTIPLE MODE AH = 24h AL = number of sectors per block (2,4,8,16) DL = drive number (80h,81h) Return: CF clear if successful CF set onerror AH = status (see #0140 at AH=01h) Desc: specify how many sectors the controller should transfer as a group between operation-complete interrupts when using the Read Multiple and Write Multiple functions (AH=21h,AH=22h) Notes: set the number of sectors to 0 to disable multiple-transfer mode the maximum value for the block size depends on the fixed disk drive type. The value is stored in byte 15h of the fixed disk drive parameter table that is created by POST. the byte at address 0040h:0074h is set to status of operation. SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=23h"PS/1",AH=25h"PS/1" --------c-1324------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET SECTORS AH = 24h BX = new number of sector buffers in cache Return: AX = status 0000h successful 0001h failed--size adjusted 8000h cache cannot be resized while enabled SeeAlso: AH=36h --------d-1325------------------------------- INT 13 - HARD DISK - PS/1 and newer PS/2 - IDENTIFY DRIVE AH = 25h DL = drive number (80h,81h) ES:BX-> 512 byte buffer for reply packet Return: CF clear if successful CF set on error AH = status (see #0140 at AH=01h) buffer filled with ATA/IDE-style drive information block (see #0173) Desc: retrieves the 256 words of drive data stored on an IDE hard disk Note: the byte at address 0040h:0074h is set to the status of the operation SeeAlso: AH=23h"PS/1" Format of drive information block: Offset Size Description (Table 0173) 00h WORD general drive configuration (see #0174) 02h WORD number of cylinders 04h WORD reserved 06h WORD number of heads 08h WORD number of unformatted bytes per track 0Ah WORD number of unformatted bytes per sector 0Ch WORD number of sectors per track 0Eh 6 BYTEs vendor unique 14h 20 BYTEs serial number in ASCII, 0000h=not specified) 28h WORD buffer type 2Ah WORD buffer size in 512 byte increments (0000h=not specified) 2Ch WORD number of ECC bytes passed on Read/Write Long cmds 0000h = not specified 2Eh 8 BYTEs firmware revision in ASCII, 0000h=not specified 36h 40 BYTEs model number in ASCII, 0000h=not specified 5Eh WORD bits 15-8 Vendor Unique bits 7-0 00h = Read/Write Multiple commands not implemented xxh = Maximum number of sectors that can be transferred per interrupt on Read and Write Multiple commands 60h WORD 0000h = cannot perform doubleword I/O 0001h = can perform doubleword I/O 62h WORD capabilities bit 15-9 0=reserved bit 8 1=DMA Supported bit 7-0 Vendor Unique 64h WORD reserved 66h WORD bits 15-8 PIO data transfer cycle timing mode bits 7-0 Vendor Unique 68h WORD bits 15-8 DMA data transfer cycle timing mode bits 7-0 Vendor Unique 6Ah WORD bits 15-1 reserved bit 0 1=the fields reported in tranlation mode are valid 0=the fields reported in translation mode may be valid 6Ch WORD number of current cylinders 6Eh WORD number of current heads 70h WORD number of current sectors per track 72h DWORD current capacity in sectors 76h WORD reserved 78h 136 BYTEs not defined by ATA spec 2.6 100h 64 BYTEs vendor unique 140h 96 BYTEs reserved Note: the above description is as in the ATA (AT Attachment) Specification. Bitfields for general drive configuration: Bit(s) Description (Table 0174) 15 0 reserved for non-magnetic drives 14 format speed tolerance gap required 13 track offset option available 12 data strobe offset option available 11 rotational speed tolerance is > 0.5% 10 disk transfer rate > 10 Mbs 9 disk transfer rate > 5Mbs but <= 10Mbs 8 disk transfer rate <= 5Mbs 7 removable cartridge drive 6 fixed drive 5 spindle motor control option implemented 4 head switch time > 15 usec 3 not MFM encoded 2 soft sectored 1 hard sectored 0 reserved (0) --------c-1325------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET FLUSH INTERVAL AH = 25h BX = interval Return: AX = status (0000h successful) Desc: specify how often the cache should write dirty buffers to disk when buffered writes are enabled SeeAlso: AH=21h"QUICKCACHE",AH=2Ch,AH=2Eh --------c-1326------------------------------- INT 13 U - QUICKCACHE II v4.20 - UNINSTALL AH = 26h Return: AX = status 0000h successful 0001h-00FFh interrupt vector which was hooked by another TSR SeeAlso: AH=27h --------c-1327--BX0000----------------------- INT 13 u - QUICKCACHE II v4.20 - INSTALLATION CHECK AH = 27h BX = 0000h Return: AX = 0000h if installed BX nonzero if installed BH = major version BL = binary minor version Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and Associates, Inc. SeeAlso: AH=26h,AH=A0h,INT 16/AX=FFA5h/CX=1111h --------c-1328------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET AUTOMATIC DISMOUNT AH = 28h AL = new state (00h disabled, 01h enabled) Return: AX = status (0000h successful) SeeAlso: AH=20h"QUICKCACHE" --------c-1329------------------------------- INT 13 U - QUICKCACHE II v4.20 - NOP AH = 29h Return: AX = 0000h --------c-132A------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET BUFFER SIZE AH = 2Ah AL = buffer size (1-30) Return: AX = status (0000h successful) Desc: specify the number of cache sector buffers to dedicate to buffered read and write operations SeeAlso: AH=2Ch,AH=2Dh,AH=39h,AH=3Ah --------c-132B------------------------------- INT 13 U - QUICKCACHE II v4.20 - DRIVE ACCESS SOUNDS AH = 2Bh AL = new state (00h disabled, 01h enabled) Return: AX = status (0000h successful) --------c-132C------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED WRITES AH = 2Ch AL = new state (00h disabled, 01h enabled) Return: AX = status (0000h successful) Desc: specify whether the cache should delay disk writes Note: this function enables or disables delayed writes for all drives; use AH=38h to change a single drive SeeAlso: AH=25h"QUICKCACHE",AH=2Dh,AH=2Eh,AH=38h --------c-132D------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED READ AH = 2Dh AL = new state (00h disabled, 01h enabled) Return: AX = status (0000h successful) Desc: specify whether the cache should attempt to read ahead of actual requests Note: this function enables or disables read-ahead for all drives; use AH=37h to change a single drive SeeAlso: AH=2Ch,AH=37h --------c-132E------------------------------- INT 13 u - QUICKCACHE II v4.20 - SET FLUSH COUNT AH = 2Eh BX = flush count Return: AX = status (0000h successful) Desc: specify how many dirty sectors the cache should write after each flush interval (see AH=25h"QUICKCACHE") when buffered writes are enabled SeeAlso: AH=21h"QUICKCACHE",AH=25h"QUICKCACHE",AH=2Ch --------c-132F------------------------------- INT 13 - QUICKCACHE II v4.20 - FORCE IMMEDIATE INCREMENTAL FLUSH AH = 2Fh Return: AX = status (0000h successful) Desc: immediately flush up to "flushcount" dirty sectors to disk as if the flush interval had expired SeeAlso: AH=21h"QUICKCACHE" --------!---Section--------------------------