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Interrupt List Release 40 Last change 4/3/94 This compilation is Copyright (c) 1989,1990,1991,1992,1993,1994 Ralf Brown --------!---FILELIST------------------------- Please redistribute the following files unmodified as a group, in a trio of archives named INTER40A through INTER40C (preferably the original authenticated PKZIP archives): INTERRUP.1ST the read-me file, containing credits, availability info INTERRUP.A INT 00 through INT 13 \ INTERRUP.B INT 14 through INT 15/7F \ INTERRUP.C INT 15/80 through INT 19 \ INTERRUP.D INT 1A through INT 21/44 \ total 1489 pages at INTERRUP.E INT 21/45 through INT 21/BF \ 60 lines per page, INTERRUP.F INT 21/C0 through INT 2C > 1594 with INTPRINT -p INTERRUP.G INT 2D through INT 2F/7F / (6281 entries) INTERRUP.H INT 2F/80 through INT 2F/FF / INTERRUP.I INT 30 through INT 60 / INTERRUP.J INT 61 through INT 69 / INTERRUP.K INT 6A 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 86BUGS.LST a listing of CPU bugs and undocumented features CMOS.LST a description of the CMOS RAM data bytes GLOSSARY.LST a glossary of terms, abbreviations, and acronyms MEMORY.LST format of the BIOS data area PORTS.LST a listing of I/O ports COMBINE.BAT combine the pieces of the list into a single file The following files should be distributed in an archive called INTER40D: INT.COM invoke interrupts from commandline INT2GUID.* convert list into TurboPower GUIDE or POPHELP database INT2HLP.BAT Perl script to convert list into QuickHelp database INT2QH.* program to convert list into QuickHelp database INTERVUE.EXE indexed interrupt list browser INTHELP.* convert list into TurboPower GUIDE database INTLIST.E Epsilon extension for handling list INTLIST.ICO Windows icon for INTERVUE INTPRINT.C source code for INTPRINT RB2NG.* convert list into Norton Guides database --------!---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 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 - 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 - 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 - 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 - 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 - 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 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-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. --------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 00h BPM (breakpoint register types) 01h I/O 02h INTerrupt 03h BPX (INT 03h-style breakpoint) 04h reserved 05h range DH = entry number of last breakpoint to be triggered DL = type of last triggered breakpoint (see above) Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc. SeeAlso: AX=0913h,AX=0914h --------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 below) 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 breakpoint structure: Offset Size Description 00h BYTE breakpoint type (see below) 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 below) (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 below) 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 Values for breakpoint type: 00h memory location 01h memory range 03h I/O 04h interrupt 05h execution break Values for 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 - 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 SeeAlso: INT 10/AH=12h/BL=20h --------C-05--------------------------------- INT 05 - 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 - 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 --------C-07--------------------------------- INT 07 - 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 - 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 - 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 - 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 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 SysRq invoke INT 15/AH=85h 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 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 51"DESQview",INT 59"DoubleDOS",INT 79"GO32" Values for 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 E0h prefix code 21h F 51h PgDn E1h prefix code 22h G 52h Ins FAh ACK 23h H 53h Del FEh RESEND 24h J 54h SysRq FFh kbd error/buffer full 25h K 26h L 56h left \| (102-key) 27h ; : 57h F11 28h ' " 58h F12 29h ` ~ 2Ah Left Shift 5Ah PA1 2Bh \ | 5Bh F13 2Ch Z 5Ch F14 2Dh X 5Dh F15 2Eh C 2Fh V 30h B Note: scan codes 56h-E1h are only available on the extended (101/102-key) keyboard and Host Connected (122-key) keyboard; scan codes 5Ah-76h are only available on the 122-key keyboard --------C-09--------------------------------- INT 09 - 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 Note: 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 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 - 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 - 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 P - 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 - 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 P - 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 - 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 - 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 is offset 100h in the segment pointed at by this vector Call the 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) Return: ??? Format of emulator's data area (offset from interrupt handler's segment): Offset Size Description 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" --------H-0D--------------------------------- INT 0D - 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 - 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 - 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 - 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 - 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 - HP 95LX - EXTERNAL CARD INTERRUPT SeeAlso: INT 0D"HP 95LX",INT 0F"HP 95LX",INT 15/AX=4DD4h --------H-0F--------------------------------- INT 0F - 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 - HP 95LX - REAL-TIME CLOCK SeeAlso: INT 0E"HP 95LX",INT 15/AX=4DD4h,INT 70 --------C-10--------------------------------- INT 10 - 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 = mode (see below) Return: AL = video mode flag (Phoenix 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 below) 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 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 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 4 B800 EGA = T 80x25 8x16 640x400 16 4 B800 MCGA = T 80x25 9x16 720x400 16 4 B800 VGA 03h = T 80x25 8x8 640x200 16 4 B800 CGA,PCjr,Tandy = T 80x25 8x14 640x350 16/64 4 B800 EGA = T 80x25 8x16 640x400 16 4 B800 MCGA = T 80x25 9x16 720x400 16 4 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 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 720x352 mono . B000 Hercules + MSHERC.COM = G 90x45 8x8 720x360 mono . B000 Hercules + HERKULES [11] 09h = G 40x25 8x8 320x200 16 . . PCjr, Tandy 1000 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 . . 240x128 . . B000 HP 95LX = G 120x45 8x16 960x720 16 1 A000 Realtek RTVGA 21h = 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 . . 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 8x13 1056x364 16/256K 4 B800 Tseng ET4000 chipset = T 132x28 8x12 1056x336 16 1 B800 Ahead B = 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 . . 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 = 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 . . 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 . . 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) 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) 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 . . 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 3Dh = G . . 1280x1024 16 . . Definicon = G 128x64 8x16 1280x1024 16 1 A000 Tseng ET4000 v3.00 [1,7] 3Eh = G . . 1280x961 16 . . Definicon 3Fh = G . . 1280x1024 256 . . Hercules ??? (ET4000W32) 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 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 4Eh = T 120x43 . . . . . VEGA VGA = T 80x60 8x8 . 16/256K . B800 Oak OTI-067/OTI-077 [8] 4Fh = T 132x25 . . . . . VEGA VGA = T 132x60 . . . . . some Oak Tech VGA [8] 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 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 . . 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 . . 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 . . 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 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 . . 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+ 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 7Fh = special function set (see AX=007Fh) . Paradise VGA, AT&T VDC600 = G 128x48 8x16 1024x768 4 . . Genoa 6400 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 720x352 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 Index: video modes Index: installation check|HERKULES --------V-100070----------------------------- INT 10 - VIDEO - Everex Micro Enhancer EGA/Viewpoint VGA - EXTENDED MODE SET AX = 0070h BL = mode (see below) 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" Values for 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 --------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 --------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 SeeAlso: AX=007Fh/BH=01h,AX=007Fh/BH=02h --------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 below) 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 list entry: Offset Size Description 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 below) 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 Bitfields for cursor start and options: Bit(s) Description 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 --------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 --------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 AH=00h) 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 --------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) Warning: some implementations have a bug which destroys BP 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) Warning: some implementations have a bug which destroys BP 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 AH=00h) Return: AH = charater's attribute (see below) 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. SeeAlso: AH=09h,AX=1003h,AX=5001h Bitfields for character's attribute: Bit(s) Description 7 blink 6-4 background color 000 black 100 red 001 blue 101 magenta 010 green 110 brown 011 cyan 111 white 3-0 foreground color 0000 black 1000 dark gray 0001 blue 1001 light blue 0010 green 1010 light green 0011 cyan 1011 light cyan 0100 red 1100 light red 0101 magenta 1101 light magenta 0110 brown 1110 yellow 0111 light gray 1111 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 AH=00h) BL = attribute (text mode) or color (graphics mode) if bit 7 set in 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 AH=00h) BL = attribute (PCjr, Tandy 1000 only) or color (graphics mode) if bit 7 set in 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 SeeAlso: AH=0Bh/BH=00h --------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) 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 --------V-100F------------------------------- INT 10 - VIDEO - GET CURRENT VIDEO MODE AH = 0Fh Return: AH = number of character columns AL = display mode (see 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 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 below) ??? 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 DL=04h: Offset Size Description 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 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) 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 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 --------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 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 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 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 AX=1000h) 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 (see AX=1002h) 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 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 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 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 --------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 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 Desc: determine which type of digital-to-analog converter is installed on the display board SeeAlso: AX=10F0h,AX=10F2h --------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 BL = block specifier (see below) 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) SeeAlso: AH=1Bh,AX=CD10h Bitfields for block specifier: Bit(s) Description ---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) 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 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 = 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 bits CL = switch settings (see below) 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 Bitfields for switch settings: Bit(s) Description 0 switch 1 OFF 1 switch 2 OFF 2 switch 3 OFF 3 switch 4 OFF 4-7 unused --------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 ES:BP -> BIOS info structure SeeAlso: AH=12h/BL=12h"TRIDENT" Format of Info structure: Offset Size Description 00h BYTE ??? (=0) 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 SeeAlso: AX=BF05h --------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 below) 03h disable register trapping (CGA emulation) 04h enable register trapping 05h program video mode ES:BP -> video mode table (see below) 06h get mode table AL = video mode Return: ES:BP -> table suitable for mode AL (and subfnc BL=05h) BP = FFFFh on error SeeAlso: AH=FFh"Oak" Bitfields for status flags: Bit(s) Description 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 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 below) 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 Values for 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 ----------1012--BL84------------------------- INT 10 - Cirrus Logic BIOS v3.02 - INQUIRE OPTIONS AH = 12h BL = 84h Return: AX = user options word (see below) 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 user options word: Bit(s) Description 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 below) CX = options word 2 (see below) 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 options word 1: Bit(s) Description 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 options word 2: Bit(s) Description 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 below) BL = monitor type (00h color, 01h grayscale, 02h no display) SeeAlso: AH=12h/BL=9Ah,AH=12h/BL=A2h Values for 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 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 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 --------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 underscore 02h map high intensity to reverse video 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 below) ES:DI -> parameter table (see below) SeeAlso: AH=1Bh Values for alternate display adapter type: 0000h none 5140h LCD 5153h CGA 5151h mono Format of display parameter table: Offset Size Description 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 0Ch WORD vertical pixel separation in micrometers --------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 --------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 below) BH = alternate display code SeeAlso: AH=12h/BL=35h,AX=1A01h,AH=1Bh 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 AX=1A00h) 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 below) 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 state information: Offset Size Description 00h DWORD address of static funtionality table (see below) 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 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 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 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 below) 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 below) 33h 13 BYTEs reserved (00h) Bitfields for miscellaneous flags: Bit(s) Description 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 reserved Bitfields for save pointer state flags: Bit(s) Description 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 reserved Format of Static Functionality Table: Offset Size Description 00h BYTE modes supported 1 bit 0 to bit 7 = 1 modes 0,1,2,3,4,5,6 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 reserved 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 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 below) 0Ch WORD reserved 0Eh BYTE save pointer function flags (see below) 0Fh BYTE reserved Bitfields for miscellaneous function support flags: Bit(s) Description 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 paging function supported 8 light pen supported 9 save/restore state function 1Ch supported 10 intensity blinking function supported 11 Display Combination Code supported 12-15 reserved Bitfields for save pointer function flags: Bit(s) Description 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 reserved --------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 below) 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 Bitfields for requested states: Bit(s) Description 0 video hardware 1 BIOS data areas 2 color registers and DAC state 3-15 reserved Format of video hardware state: Offset Size Description 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 DAC state: Offset Size Description 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 --------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 (BIOS looks at both offsets) Format of sync table: Offset Size Description 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 below. 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 DMQS buffer: Offset Size Description 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 below) CX:DX = 0000h:0000h if 3270PC Control Program not active SeeAlso: AX=1F01h Format of 3270 PC configuration table: Offset Size Description 00h BYTE aspect ratio X 01h BYTE aspect ratio Y 02h BYTE monitor type (see below) 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 below) 07h BYTE function flags 2 bit 6: GPI graphics supported 08h WORD segment address of Control Program Level table (see below) 0Ah 10 BYTEs reserved Values for 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 function flags 1: Bit(s) Description 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 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 below) 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 configuration info: Offset Size Description 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 --------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 --------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 (0-720) 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 (0-720) 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 (0-720) 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 (0-720) 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 (0-720) 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 below) 16h get parameters ES:BX -> buffer for parameter table (see below) 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 below) SeeAlso: AH=0Fh/SI=F123h Values for 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 parameter table: Offset Size Description 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 below) 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 00h 4 BYTEs signature ("VESA") 04h WORD VESA version number 06h DWORD pointer to ASCIZ OEM string 0Ah DWORD environment flags (see below) 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 environment flags: Bit(s) Description 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 below) Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E02h Format of subsystem information: Offset Size Description 00h DWORD pointer to null-terminated board OEM string 04h DWORD capabilities (see below) 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 capabilities: Bit(s) Description 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 Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E01h Format of mode information: Offset Size Description 00h WORD attributes of the mode (see below) 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 below) 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 mode attributes: Bit(s) Description 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) Values for 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 below) DX = XGA handle Return: AL = 4Eh if function supported AH = status 00h function successful else error code SeeAlso: AX=4E00h,AX=4E06h Bitfields for Feature Connector State: Bit(s) Description 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 AX=4E05h) SeeAlso: AX=4E00h,AX=4E05h --------V-104F00----------------------------- INT 10 - VESA SuperVGA BIOS - GET SuperVGA INFORMATION AX = 4F00h ES:DI -> 256-byte buffer for SuperVGA information (see below) Return: AL = 4Fh if function supported AH = status 00h successful ES:DI buffer filled 01h failed Desc: determine whether VESA BIOS extensions are present and the capabilities supported by the display adapter SeeAlso: AX=4E00h,AX=4F01h,AX=7F00h Index: installation check;VESA SuperVGA Format of SuperVGA information: Offset Size Description 00h 4 BYTEs signature ("VESA") 04h WORD VESA version number 06h DWORD pointer to OEM name "761295520" for ATI 0Ah 4 BYTEs capabilities 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 14h 236 BYTEs reserved 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 --------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 below) Return: AL = 4Fh 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 mode information: Offset Size Description 00h WORD mode attributes (see below) 02h BYTE window attributes, window A (see below) 03h BYTE window attributes, window B (see below) 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 below) 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 28h 216 BYTEs reserved (0) Bitfields for window attributes: Bit(s) Description 0 exists 1 readable 2 writable 3-7 reserved Bitfields for mode attributes: Bit(s) Description 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 Values for 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 bit 15 set means don't clear video memory Return: AL = 4Fh function supported AH = status 00h successful 01h failed SeeAlso: AX=4E03h,AX=4F01h,AX=4F03h Values for VESA video mode: 00h-FFh OEM video modes (see 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 Index: video modes Values for S3 OEM video mode: 201h 640x480x256 202h 800x600x16 203h 800x600x256 204h 1024x768x16 205h 1024x768x256 206h 1280x960x16 208h 1280x1024x16 211h 640x480x64K (Diamond Stealth 24) 212h 640x480x16M (Diamond Stealth 24) 301h 640x480x32K Index: video modes --------V-104F03----------------------------- INT 10 - VESA SuperVGA BIOS - GET CURRENT VIDEO MODE AX = 4F03h Return: AL = 4Fh function supported AH = status 00h successful BX = video mode (see AX=4F02h) 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 below) Return: AL = 4Fh function supported AH = status 00h successful 01h failed Bitfields for states to save/restore: Bit(s) Description 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 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 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 values are multiplied by the character cell width/height SeeAlso: AX=4F01h,AX=4F05h,AX=4F07h --------V-104F07BH00------------------------- INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET DISPLAY START AX = 4F07h BH = 00h (reserved) BL = function 00h 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 Return: AL = 4Fh if function supported AH = status 00h successful 01h failed Note: this function is valid in text modes, provided that values are multiplied by the character cell width/height 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 BH = current number of bits per primary (06h = standard VGA) ----------104F13----------------------------- INT 10 - VESA Audio Interface - API AX = 4F13h ??? details not yet available --------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 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 data area: Offset Size Description 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 82C45X CHIP INFORMATION AX = 5F00h Return: AL = 5Fh function supported BL = chip type (see below) BH = video memory size (00h 256KB, 01h 512KB, 02h 1MB) CX = miscellaneous information (see below) SeeAlso: AX=5F01h Bitfields for chip type: Bit(s) Description 7-4 chip type 0000: 82c451 0001: 82c452 0010: 82c455 0011: 82c453 0101: 82c456 0110: 82c457 0111: F65520 1000: F65530 3-0 revision number Bitfields for miscellaneous information: Bit(s) Description 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 below) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F00h,AX=5F02h,AH=FFh"Oak" Values for 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 bits 1-0 scanlines 00: 200 01: 350 10: 400 bit 7 persistence (0 reset on next boot, 1 until changed) 01h power-up emulation mode CL = emulation mode (see AX=5F01h"Chips") 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 --------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-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 below) 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 state mask: Bit(s) Description 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 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 below) 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 control bits: Bit(s) Description 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-106F00BX0000----------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP Ext BIOS - INSTALLATION CHECK AX = 6F00h BX = 0000h Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present BX = 4850h ('HP') indicates HP Extended BIOS video functions present SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,AX=6F05h --------V-106F01----------------------------- INT 10 - VIDEO - Video7 VGA,VEGA VGA,HP Ext BIOS - GET MONITOR INFO AX = 6F01h Return: AL = monitor type code (HP,VEGA VGA only) (see below) AH = status register information (see below) CL = current value of Extended Control register (HP Ext BIOS, and only if AL=41h) Note: bits 0-3 are the same as the EGA/VGA status register bits 0-3 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 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 --------V-106F02----------------------------- INT 10 - VIDEO - HP Vectra EXTENDED BIOS - SET MONITOR INFO AX = 6F02h BL = new value for extended control register (see below) Return: nothing 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 extended control register: Bit(s) Description 0 screen resolution (0 = 200 lines, 1 = 400 lines) 1 underline enable (if set, 'blue' of fg color = underl) 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 - VIDEO - HP Vectra EXTENDED BIOS - MODIFY MONITOR INFO AX = 6F03h BH = exclude mask (set bits are not modified) BL = new values for bits indicated by BH (see AX=6F02h) Return: nothing Note: this function is only valid when an HP MultiMode Video Display Adapter is installed 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 AX=6F05h) 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 - SET VIDEO MODE AX = 6F05h BL = mode (see below) Notes: also supported by the HP Vectra Extended BIOS 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 Values for video mode: text/ text pixel pixel colors disply scrn system grph resol box resolution pages addr 00h-13h = standard IBM modes (see 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 --------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 below) 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 control block: Offset Size Description 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 below) CH = feature bits (see below) DX = video board info bits 4-15: board ID model bits 0-3: board ID revision DI = BCD BIOS version number SeeAlso: AX=5F01h,AH=FF"Oak" Values for 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 Values for board model for Trident-based Everex cards: 0236h Ultragraphics II 0620h Vision VGA 0673h EVGA 0678h Viewpoint Bitfields for feature bits: Bit(s) Description 7-6 memory size 00 = 256K 01 = 512K 10 = 1024K 11 = 2048K 5 special oscillator present 4 VGA protect enabled 0 6845 emulation --------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 below) DL = monitor type to get info for ES:DI -> buffer for mode info (see below) Return: CL = total number of modes fitting criteria CH = size of each info record SeeAlso: AX=7000h/BX=0000h,AX=7000h/BX=0004h Values for 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 mode information record: Offset Size Description 00h BYTE mode number (bit 7 set if extended mode) 01h BYTE mode type (see above) 02h BYTE info bits (see below) 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 info bits: Bit(s) Description 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 below) Desc: Draws a line or box. Only valid in graphics modes. SeeAlso: AH=70h"HUNTER" Format of control block: Offset Size Description 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 below) SeeAlso: AH=60h"HUNTER",AH=73h"HUNTER" Values for 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-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 below) 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 info structure: Offset Size Description 00h DWORD pointer to VESA function dispatch table 04h DWORD pointer to SOLLEX function dispatch table 08h DWORD pointer to VESA SuperVGA info (see AX=4F00h) 0Ch DWORD pointer to mode info structure table, consisting of alternating ResInfo (see below) and VESA mode information (see AX=4F01h) blocks, terminated with an FFFFh word 10h DWORD pointer to font info structure table (see below) 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 ResInfo: Offset Size Description 00h WORD 16-bit mode number 02h WORD adapter type (00h VGA, 01h EGA, 02h CGA, 03h MDA) 04h WORD display info (see AX=7F01h/BL=01h) 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 below) Format of font info table [array] entry: Offset Size Description 00h BYTE required font height 01h BYTE parameter to load text mode font 02h BYTE parameter to load graphics mode font Values for 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 below) Return: AL = 7Fh if supported AH = status 00h successful 01h failed AL <> 7Fh if not supported Note: initializes video hardware to a particular standard SeeAlso: AX=7F00h,AX=7F01h/BL=01h,AX=7F01h/BL=02h Bitfields for adapter request: Bit(s) Description 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 AX=7F01h/BL=00h) DX = display type (see below) SeeAlso: AX=7F00h,AX=7F01h/BL=00h,AX=7F01h/BL=02h Bitfields for display type: Bit(s) Description 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 AX=7F01h/BL=00h) 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 below) 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 display output setting: Bit(s) Description 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 AX=7F02h/BL=00h) CX = displays attached (see below) 01h failed SeeAlso: AX=7F00h,AX=7F02h/BL=00h Bitfields for displays attached: Bit(s) Description 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 below) 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 register value table: Offset Size Description 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 AH=00h) SeeAlso: AH=91h --------N-1091------------------------------- INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION ADAPTER TYPE AH = 91h Return: AL = video adapter type (see below) Note: types less than 80h do not imply that the current user is on the host SeeAlso: AH=90h Values for 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 --------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 --------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 --------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 --------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) BL = master mode (see below) CH = 00h (reserved) = 31h if QVision VGA CL = switchable VDU mode supported (see below) DH = internal monitor type (see below) DL = external monitor type (see below) SeeAlso: AH=1Ah,AX=BF00h,AX=BF01h,AX=BF02h Values for master mode: 00h switchable VDU not present 04h CGA 05h EGA 07h MDA 08h switchable LCD controller present 09h plasma VGA Values for 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 08h 16-level mono plasma VGA 09h 4-level mono LCD CGA 0Ah 16-level mono LCD VGA 0Bh active-matrix color VGA 0Ch active-matrix mono VGA Bitfields for switchable VDU mode support: Bit(s) Description 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 --------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 LTE Lite - ENABLE ??? AX = BF09h Return: CF clear Note: sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h to 6Fh and index 83h to 04h SeeAlso: AX=BF0Ah,AX=BF0Bh --------b-10BF0A----------------------------- INT 10 - VIDEO - Compaq LTE Lite - DISABLE ??? AX = BF0Ah Return: CF clear Note: clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h to 80h and index 83h to FBh SeeAlso: AX=BF09h,AX=BF0Bh --------b-10BF0B----------------------------- INT 10 - VIDEO - Compaq LTE Lite - CHECK WHETHER ??? ENABLED AX = BF0Bh Return: CF clear AX = state (0000h disabled, 0001h enabled) SeeAlso: AX=BF09h,AX=BF0Ah --------b-10BF0C----------------------------- INT 10 - VIDEO - Compaq SystemPro XL - CLEAR ??? AX = BF0Ch Return: CF clear SeeAlso: AX=BF0Dh,AX=BF0Eh --------b-10BF0D----------------------------- INT 10 - VIDEO - Compaq SystemPro XL - SET ??? AX = BF0Dh Return: CF clear SeeAlso: AX=BF0Ch,AX=BF0Eh --------b-10BF0E----------------------------- INT 10 - VIDEO - Compaq SystemPro XL - CHECK WHETHER ??? SET AX = BF0Eh Return: CF clear AL = ??? (00h clear [AX=BF0Ch called] or 01h set [AX=BF0Dh called]) SeeAlso: AX=BF0Ch,AX=BF0Dh --------b-10BF0F----------------------------- INT 10 - VIDEO - Compaq SystemPro XL, LTE Lite - ??? AX = BF0Fh BX = ??? or FFFFh to get current value Return: CF clear AX = ??? Note: this function calls AX=BF10h if BX=FFFFh and an EISA System ROM is present SeeAlso: AX=BF10h --------b-10BF10----------------------------- INT 10 - VIDEO - Compaq SystemPro XL, LTE Lite - GET ??? AX = BF10h Return: CF clear AX = ??? SeeAlso: AX=BF0Fh --------b-10BF11----------------------------- INT 10 - VIDEO - Compaq LTE Lite, ProSignia - GET ??? AX = BF11h Return: AL = BFh if supported CF clear ES:BX -> ASCII signature "COMPAQ" ES:DI -> ??? --------b-10BF12----------------------------- INT 10 - VIDEO - Compaq LTE Lite, ProSignia - ??? AX = BF12h BL = ??? Return: CF clear Note: this function is a NOP if the VGA subsystem is inactive or the current Display Combination Code is 10h or higher --------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------10CB05----------------------------- INT 10 - UNCHAIN - SAVE PALETTE AX = CB05h SeeAlso: AX=CB00h,AX=CB06h ----------10CB06----------------------------- INT 10 - UNCHAIN - RESTORE VGA REGISTERS AX = CB06h SeeAlso: AX=CB00h,AX=CB05h,AX=CBFFh ----------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-10CC00SI0000----------------------- INT 10 - VIDEO - UltraVision - GET STATUS (INSTALLATION CHECK) AX = CC00h SI = 0000h (if checking version) Return: CX = ABCDh 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 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 DS:SI -> current font names table (see below) Note: only the font names are valid on monochrome EGA systems SeeAlso: AX=1009h,AX=CD00h Format of palette register list: Offset Size Description 00h 16 BYTEs colors for palette registers 00h through 0Fh 10h BYTE border color Format of current font names table (v2+): Offset Size standard EGA HiRes EGA VGA 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 current font names table (v1.x): Offset Size HiRes EGA 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 below) SeeAlso: AH=0Fh,AX=CC00h,AH=CDh Values for 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 --------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 00h off (color systems only) 01h underline below characters 02h strike through characters 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 --------V-10CD08----------------------------- INT 10 - VIDEO - UltraVision v1.2+ - GET UNDERLINE STATUS (EGA,VGA) AX = CD08h Return: CL = hardware underline status (see AX=CD07h) 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 AX=CD04h) 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-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 02h Hercules InColor??? DH = memory mode byte 01h "half" mode 03h "full" mode 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 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 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 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 --------V-10F1------------------------------- INT 10 - EGA Register Interface Library - WRITE ONE REGISTER AH = F1h DX = group index (see AH=F0h) 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 CRTC (3B4h mono modes, 3D4h color modes) 08h Sequencer 3C4h 10h Graphics Controller 3CEh 18h Attribute Controller 3C0h 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 (see AH=F2h) 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 records (see below) 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 entries in table of register records: Offset Size Description 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 AH=F4h) 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 below) 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" Values for 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 --------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 = 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 below) 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 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 below) AL = SCSI Addressing (see below) 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" Bitfields for SCSI addressing: Bit(s) Description 7-6 Host Adapter 5-3 SCSI Target ID 2-0 SCSI Target LUN (logical unit number) 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 --------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=0252h/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=0252h/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=0252h/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=0252h/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=0252h/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=0252h/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=0252h/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=0252h/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 below) 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 Values for key scan code: 00h No hot key 1Dh Left CTRL 2Ah Left Shift 36h Right Shift 57h F11 58h F12 ----------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 below) 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 SCSI addressing: Bit(s) Description 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 = 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 ----------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 ----------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: 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 02h build program ID list 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 03h switch to specified task (task need not be open yet) DX = two-letter program ID Return: AX = 0000h if task undefined 04h ??? 05h ??? 06h get version (undoc) Return: AX = version * 100 (v1.71 = 00ABh) 07h ??? 08h get open tasks (undoc) ES:DI -> task info buffer (see below) Return: AX = number of open tasks (max 20) 09h ??? Program: Back & Forth is a task switcher by Progressive Solutions, Inc. SeeAlso: INT 11/AX=FFFEh Index: installation check;BACK&FORTH Format of task info buffer: Offset Size Description 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 --------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 AH=01h) CF clear if successful (returned AH=00h) CF set on error Note: forces controller to recalibrate drive heads (seek to track 0) SeeAlso: AH=0Dh,AH=11h,INT 21/AH=0Dh,INT 4E"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 below) Note: some BIOSes return the status in AL; the PS/2 Model 30/286 returns the status in both AH and AL Values for 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) 06h disk changed (floppy) 07h drive parameter activity failed (hard disk) 08h DMA overrun 09h attempted DMA across 64K boundary 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 (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 such drive (Compaq) 32h incorrect drive type stored in CMOS (Compaq) 40h seek failed 80h timeout (not ready) AAh drive not ready (hard disk) 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 AH=01h) 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 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 --------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 AH=01h) 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 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 --------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 AH=01h) 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 --------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 below) Return: CF set on error CF clear if successful AH = status (see AH=01h) 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 address field buffer entry (one per sector in track): Offset Size Description 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 = 00h for good sector, 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: AH = status code (see AH=01h) 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 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 below) Return: CF set on error AH = status code (see AH=01h) 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 mode select data: Offset Size Description 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 AH=01h) 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 (3.5 DD/HD) Notes: it is not necessary to call AH=17h/AH=18h first (will be ignored) the boot sector can be obtained from a 2M diskette already formatted the installation check for 2M must search a "CiriSOFT:2M:1.3" string or similar (recomended ":2M:" substring) in CiriSOFT TSR interface 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 AH=01h) 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 below) ES:BX -> defect table A, B or C (see below) Return: CF set on error AH = status code (see AH=01h) 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 defect list info: Bit(s) Description 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 defect table A: Offset Size Description 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 defect table B: Offset Size Description 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 below) Format of defect table C: Offset Size Description 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 below) Format of defect list entry: Offset Size Description 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 AH=01h) 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 --------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 AH=01h) 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 AH = status code (see AH=01h) SeeAlso: AH=05h"SCSI",AH=06h"SCSI",AH=07h"FIXED" --------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 AH=01h) CF clear if successful AH = 00h BL = drive type (AT/PS2 floppies only) (see below) 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. SeeAlso: AH=06h"Adaptec",AH=15h,INT 1E,INT 41 Values for 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 --------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 AH=01h) 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 AH=01h) 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 AH=01h) 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 AH=01h) SeeAlso: AH=00h,AH=02h,AH=0Ah --------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 AH=01h) Notes: reinitializes the hard disk controller, resets the specified drive's parameters, and recalibrates the drive's heads (seek to track 0) 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 AH=01h) 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 AH=01h) 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 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 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 AH=01h) 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 AH = status code (see 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) --------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 AH=01h) SeeAlso: AH=12h,AH=14h --------B-1314------------------------------- INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC AH = 14h Return: CF set on error CF clear if successful AH = status code (see AH=01h) 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 AH=01h) 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 Return: CF clear if change line inactive AH = 00h (disk not changed) CF set if change line active AH = status 06h change line active or not supported 80h drive not ready or not present Note: call AH=15h first to determine whether the drive supports a change line SeeAlso: AH=15h --------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 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 Return: CF clear if successful CH = number of bytes returned in buffer??? CF set on error AH = status code (see 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 SCSI inquiry information block: Offset Size Description 00h BYTE device type bits 0-4: peripheral device type (see below) bits 5-7: peripheral qualifier (see below) 01h BYTE device type modifier bits 0-6: device type modifier bit 7: removable medium 02h BYTE SCSI version (see below) 03h BYTE data format/capabilities (see below) 04h BYTE additional data length (total remaining bytes) 05h 2 BYTEs reserved 07h BYTE device capabilities (see below) 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 Values for 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 Values for 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 SCSI version: Bit(s) Description 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 data format/capabilities: Bit(s) Description 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 device capabilities: Bit(s) Description 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 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 AH=01h) CF clear if successful AX = 4321h (magic number) CX = controller family code (see below) ---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 Values for 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-1319------------------------------- INT 13 - FIXED DISK - PARK HEADS (XT286,PS) AH = 19h DL = drive Return: CF set on error AH = status (see 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 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 count CL = format modifiers (see below) DL = drive ES:BX -> defect table Return: CF set on error AH = status (see 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 format modifiers: Bit(s) Description 4 generate periodic interrupt 3 perform surface analysis 2 update secondary defect map 1 ignore secondary defect map 0 ignore primary defect map --------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 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 record DL = drive ES:BX -> buffer for manufacturing header (defect list) Return: CF set on error AH = status Note: manufacturing header format (Defect Map Record format) can be found in IBM 70MB, 115MB Fixed Disk Drives Technical Reference --------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 AH=01h) CF clear if successful ES:BX -> SCSI disk information block 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 SCSI disk information block: Offset Size Description 00h BYTE drive physical information (see below) 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 device physical information: Bit(s) Description 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 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-131C0A----------------------------- INT 13 - ESDI FIXED DISK - GET DEVICE CONFIGURATION AX = 1C0Ah DL = drive ES:BX -> buffer for device configuration (drive physical parameter) Return: CF set on error AH = status Note: device configuration format can be found in IBM ESDI Fixed Disk Drive Adapter/A Technical Reference --------d-131C0B----------------------------- INT 13 - ESDI FIXED DISK - GET ADAPTER CONFIGURATION AX = 1C0Bh ES:BX -> buffer for adapter configuration Return: CF set on error AH = status SeeAlso: AX=1C0Ch --------d-131C0C----------------------------- INT 13 - ESDI FIXED DISK - GET POS INFORMATION AX = 1C0Ch ES:BX -> POS information Return: CF set on error AH = status SeeAlso: AX=1C0Bh --------d-131C0E----------------------------- INT 13 - 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 ES:BX -> ABA number Return: CF set on error AH = status Note: ABA (absolute block address) format can be found in IBM ESDI Adapter Technical Reference by using its Device Configuration Status Block --------c-131D------------------------------- INT 13 - IBMCACHE.SYS - CACHE STATUS AH = 1Dh AL = subfunction 01h get status record DL = drive??? Return: ES:BX -> status record (see below) CF set on error AH = error code 02h set cache status ES:BX -> status record (see below) DL = drive??? Return: CF set on error Format of status record: Offset Size Description 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 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 error list: Offset Size Description 00h DWORD relative block address of bad page 04h BYTE drive 05h BYTE sector bit-map 06h WORD next error --------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 below) 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 Values for 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,AH=22h,AH=28h --------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,AH=2Eh,AH=2Fh --------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 --------c-1323------------------------------- INT 13 U - QUICKCACHE II v4.20 - GET ??? ADDRESS AH = 23h Return: AX = status (0000h successful) ES = segment of ??? data --------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 --------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,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,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) when buffered writes are enabled SeeAlso: AH=21h,AH=25h,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 --------c-1330------------------------------- INT 13 u - QUICKCACHE II v4.20 - GET INFO AH = 30h AL = what to get 00h system info (see below) 01h drive info (see below) 02h access frequency (array of 30 words) 03h drive index (array of 32 bytes indicating BIOS drive for DOS drive) DS:DX -> buffer for info Return: AX = status (0000h successful, 8000h invalid info specifier) Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and Associates, Inc. Format of system info: Offset Size Description 00h BYTE flag: cache enabled 01h BYTE flag: buffered writes enabled 02h BYTE flag: buffered reads enabled 03h BYTE flag: sounds enabled 04h BYTE flag: autodismount enabled 05h BYTE ??? 06h BYTE flag: ??? 07h BYTE flag: ??? 08h BYTE flag: "em_assigned" 09h BYTE flag: emulated EMS 0Ah BYTE single sector bonus 0Bh BYTE "sticky_max" 0Ch BYTE write sector bonus 0Dh BYTE bonus threshold 0Eh WORD flush interval 10h WORD flush count 12h WORD reserve pool size 14h WORD remaining space in reserve pool 16h WORD required free memory 18h WORD total cache sectors 1Ah WORD dirty cache sectors 1Ch BYTE trace buffer size 1Dh BYTE reserved (padding) Format of drive info [16-element array, one element]: Offset Size Description 00h BYTE DOS drive number 01h BYTE BIOS drive number 02h BYTE maximum sector number 03h BYTE maximum head number 04h BYTE read buffer size 05h BYTE write buffer size 06h BYTE last status 07h BYTE flag: enabled 08h BYTE flag: buffered write enabled 09h BYTE flag: buffered read enabled 0Ah BYTE flag: in use (drive info is valid) 0Bh BYTE flag: cylinder flush 0Ch BYTE reserved (padding) 0Dh BYTE sectors per track 0Eh WORD sector size 10h WORD sectors assigned 12h WORD dirty sectors 14h WORD reserved sectors 16h WORD number of read errors 18h WORD number of write errors 1Ah DWORD "rio_count" 1Eh DWORD number of cache misses 22h DWORD "wio_count" 26h DWORD "dio_count" --------c-1331------------------------------- INT 13 U - QUICKCACHE II v4.20 - RESERVE MEMORY AH = 31h BX = number of paragraphs of conventional memory to reserve for apps Return: AX = status (0000h successful) --------c-1332------------------------------- INT 13 U - QUICKCACHE II v4.20 - ENABLE CACHING FOR SPECIFIC DRIVE AH = 32h AL = drive number (00h=A:) Return: AX = status (0000h successful) SeeAlso: AH=22h,AH=33h --------c-1333------------------------------- INT 13 U - QUICKCACHE II v4.20 - DISABLE CACHING FOR SPECIFIC DRIVE AH = 33h AL = drive number (00h=A:) Return: AX = status (0000h successful) SeeAlso: AH=22h,AH=32h --------c-1334------------------------------- INT 13 U - QUICKCACHE II v4.20 - SECTOR LOCKING AH = 34h AL = function 00h end sector locking/unlocking 01h lock all accessed sectors into cache 02h unlock all accessed sectors and discard from cache Return: AX = status (0000h successful) SeeAlso: AH=20h,AH=35h --------c-1335------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET LOCK POOL SIZE AH = 35h BX = number of sectors in lock pool Return: AX = status (0000h successful) Desc: specify the number of cache sector buffers which may be dedicated to data locked into the cache SeeAlso: AH=34h --------c-1336------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET TRACE BUFFER SIZE AH = 36h AL = new size of trace buffer Return: AX = status (0000h successful) Note: called with AL=05h during an INT 13/AH=24h call SeeAlso: AH=24h --------c-1337------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED READS FOR SPECIFIC DRIVE AH = 37h AL = new state (00h disabled, else enabled) DL = drive number (00h = A:) Return: AX = status (0000h successful) SeeAlso: AH=2Dh,AH=38h --------c-1338------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED WRITES FOR SPECIFIC DRIVE AH = 38h AL = new state (00h disabled, else enabled) DL = drive number (00h = A:) Return: AX = status (0000h successful) SeeAlso: AH=2Ch,AH=37h --------c-1339------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET READ BUFFER SIZE FOR SPECIFIC DRIVE AH = 39h AL = new size of read buffer DL = drive number (00h = A:) Return: AX = status (0000h successful) Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and Associates, Inc. SeeAlso: AH=2Ah,AH=3Ah --------c-133A------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET WRITE BUFFER SIZE FOR SPECIFIC DRIVE AH = 3Ah AL = new size of write buffer DL = drive number (00h = A:) Return: AX = status (0000h successful) SeeAlso: AH=2Ah,AH=39h --------c-133B------------------------------- INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ??? AH = 3Bh AL = new state of ??? (01h enabled, else disabled) Return: AX = status (0000h successful) Note: is affected by the flag reported at offset 05h of the system info returned by AH=30h, and sets the flag at offset 06h SeeAlso: AH=3Ch --------c-133C------------------------------- INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ??? AH = 3Ch AL = new state of ??? (01h enabled, else disabled) Return: AX = status (0000h successful) Note: is affected by the flag reported at offset 05h of the system info returned by AH=30h, and sets the flag at offset 07h SeeAlso: AH=3Bh --------c-133D------------------------------- INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE CYLINDER FLUSH FOR DRIVE AH = 3Dh AL = new state (01h enabled, else disabled) DL = drive number (00h = A:) Return: AX = status (0000h successful) --------c-133E------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET SINGLE-SECTOR BONUS AH = 3Eh AL = new value for bonus Return: AX = status (0000h successful) Desc: specify the bonus score to give to single-sector transfers in order to keep those sectors in the cache longer --------c-133F------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET BONUS THRESHOLD AH = 3Fh AL = new value for bonus threshold Return: AX = status (0000h successful) --------c-1340------------------------------- INT 13 U - QUICKCACHE II v4.20 - SET "sticky_max" AH = 40h AL = new value for "sticky_max" Return: AX = status (0000h successful) --------c-1341------------------------------- INT 13 U - QUICKCACHE II v4.20 - SAVE/RESTORE ??? AH = 41h AL = direction 01h save to file else restore from file ES:DI -> 1024-byte buffer for ??? Return: AX = status (0000h successful, 8000h failed) Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and Associates, Inc. --------N-134257DX1234----------------------- INT 13 U - Beame&Whiteside BWLPD - INSTALLATION CHECK AX = 4257h ("BW") DX = 1234h Return: BX = 414Ch if installed Program: BWLPD is the printer daemon from the BW-NFS package SeeAlso: INT 62/AH=00h"ETHDEV" --------v-135342CX0001----------------------- INT 13 - ScanBoot - INSTALLATION CHECK AX = 5342h ("SB") CX = 0001h DX = 0000h Return: CF clear if ScanBoot installed AX = 0000h CX = serial number ("SW" if shareware release) DX = version BX,SI,ES destroyed Program: ScanBoot is a virus-detection TSR by PanSoft --------d-135504----------------------------- INT 13 - Seagate - GET CONTROLLER TYPE??? AX = 5504h DX = drive (bit 7 set for hard disk) Return: CF clear if successful AX = 4321h,4322h if Seagate controller CF set on error SeeAlso: AX=5505h,AX=5514h --------d-135505----------------------------- INT 13 - Seagate - PARK HEADS??? AX = 5505h DX = drive (bit 7 set for hard disk) Return: CF clear if successful CF set on error SeeAlso: AX=5504h,AX=5515h --------d-135514----------------------------- INT 13 - Seagate - ??? AX = 5514h DX = drive (bit 7 set for hard disk) Return: CF clear if successful CF set on error AX = return value (FEBEh,FEBFh,FEDAh,FEDBh) SeeAlso: AX=5504h,AX=5515h --------d-135515----------------------------- INT 13 - Seagate - PARK HEADS??? AX = 5515h DX = drive (bit 7 set for hard disk) Return: CF clear if successful CF set on error Note: appears to be identical to AX=5505h SeeAlso: AX=5504h,AX=5505h --------d-1370------------------------------- INT 13 - Priam EDVR.SYS DISK PARTITIONING SOFTWARE??? AH = 70h ??? Return: ??? Note: Priam's EDISK.EXE (FDISK replacement) and EFMT.EXE (low-level formatting program) make this call, presumably to EDVR.SYS (the partitioning driver) SeeAlso: AH=ADh ----------1375------------------------------- INT 13 - ??? AH = 75h ??? Return: AH = ??? ??? Note: intercepted by PC-Cache (v5.1 only) ----------1376------------------------------- INT 13 - ??? AH = 76h ??? Return: AH = ??? ??? Note: intercepted by PC-Cache (v5.1 only) --------c-137B00----------------------------- INT 13 - NOW! v3.05 - GET INFORMATION AX = 7B00h CX:DX -> 1F8h-byte buffer for information record (see below) Return: AX = 0000h BX = segment of main resident code ES = ??? Program: NOW! is a disk cache by Vertisoft Systems, Inc. SeeAlso: AX=7B02h,AH=EFh Format of information record: Offset Size Description 00h 80 BYTEs name of directory from which NOW! was started 50h 424 BYTEs ??? 81h ? BYTEs array of bytes for ??? F7h 250 BYTEs array of 25 entries, one per drive??? Offset Size Description 00h 2 BYTEs ??? 02h WORD ??? 04h WORD ??? 06h 4 BYTEs ??? 1F1h 7 BYTEs ??? --------c-137B01----------------------------- INT 13 - NOW! v3.05 - ??? AX = 7B01h Return: DX = segment of ??? SeeAlso: AX=7B00h --------c-137B02----------------------------- INT 13 - NOW! v3.05 - SET INFORMATION AX = 7B02h BX = segment of ??? (10h above a PSP) CX:DX -> 1F8h-byte information record (see AX=7B00h) Return: ??? Program: NOW! is a disk cache by Vertisoft Systems, Inc. Note: NOW! grabs the INT 24h value from the PSP reached via the segment in BX SeeAlso: AX=7B00h --------c-137B03----------------------------- INT 13 - NOW! v3.05 - ??? AX = 7B03h ??? Return: ??? SeeAlso: AX=7B00h,AX=7B04h --------c-137B04----------------------------- INT 13 - NOW! v3.05 - ??? AX = 7B04h ??? Return: ??? SeeAlso: AX=7B03h --------c-137B05----------------------------- INT 13 - NOW! v3.05 - GET DISK ACCESSES??? AX = 7B05h Return: BX:AX = number of physical accesses??? DX:CX = total disk accesses??? SeeAlso: AX=7B00h,AX=7B06h --------c-137B06----------------------------- INT 13 - NOW! v3.05 - GET ??? AX = 7B06h BX = ??? Return: AX = 0000h BX = ??? SeeAlso: AX=7B05h,AX=7B07h --------c-137B07----------------------------- INT 13 - NOW! v3.05 - GET ??? AX = 7B07h Return: AX = ??? BX = ??? CX = ??? DX = ??? SeeAlso: AX=7B06h --------c-137B08----------------------------- INT 13 - NOW! v3.05 - ??? AX = 7B08h CX = ??? (default 00h) Return: ??? SeeAlso: AX=7B00h --------c-1380--CX6572----------------------- INT 13 - FAST! v4.02+ - API AH = 80h CX = 6572h DX = 1970h ES:BX -> request packet (see below) AL = function 01h get cache information (see separate entry) 04h disable cache 05h enable cache and reset statistics 06h installation check (see separate entry) 07h unhook interrupts (see separate entry) 09h flush cache 0Ah (v4.02+) enable staged writes 0Bh (v4.02+) disable staged writes 0Ch (v4.02+) enable beep on flush 0Dh (v4.02+) disable beep on flush 0Eh ??? 0Fh ??? 10h (v4.12+) enable hotkeys 11h (v4.12+) disable hotkeys 12h (v4.13+) set idle delay 13h (v4.13+) set flush dirty percentage 14h (v5.00+) enable mouse checks 15h (v5.00+) disable mouse checks 16h (v5.00d+) reduce cache size to minimum 17h (v5.00d+) increase cache size to maximum Return: AH = status (except function 06h) 00h if successful 01h invalid function 05h not supported by the installed variant CF clear if successful CF set on error AL may be destroyed Program: FAST! is a disk cache by Future Computing Systems and marketed by BLOC Publishing Corp. SeeAlso: AX=8001h,AX=8006h,AX=8007h Index: hotkeys;FAST! Format of request packet: Offset Size Description 00h DWORD pointer to 19-byte signature string (see below) 04h DWORD pointer to buffer for data (if needed by function) Values for v4.04-v5.03 signature string: 13h 07h 06h 08h 11h 18h 0Fh 0Eh 02h 18h 13h 08h 0Bh 08h 01h 00h 04h 08h 15h --------c-138001CX6572----------------------- INT 13 - FAST! v4.02+ - GET CACHE INFORMATION AX = 8001h CX = 6572h DX = 1970h ES:BX -> request packet (see below) Return: AH = 00h if successful SeeAlso: AH=80h,AX=8006h Format of request packet: Offset Size Description 00h DWORD -> 19-byte signature string (see AH=80h) 04h DWORD -> buffer for cache information (see below) Format of cache information (v5.00-5.03): Offset Size Description 00h WORD binary version number of FAST! (v5.00 = 01F4h) 02h BYTE revision letter (61h = X.XXa, 62h = X.XXb, etc.) 03h BYTE FAST! variant (01h = FASTE, 02h = FASTX BIOS, 04h = FASTC, 20h = FASTX XMS) 04h DWORD total number of read requests 08h DWORD number of physical disk reads 0Ch DWORD grabbed hash buckets 10h DWORD "st_386mem" 14h DWORD total number of writes (only counted when staging enabled) 18h DWORD number of physical disk writes (only when staging enabled) 1Ch DWORD number of write errors while flushing cache 20h WORD flags1 (see below) 22h WORD flags bit 0: ??? bit 1: staged writes enabled 24h WORD ??? 26h WORD maximum cache size in KB 28h WORD minimum cache size in KB 2Ah WORD segment of first cache buffer (FASTC) segment of EMS page frame (FASTE) XMS handle (FASTX XMS) 2Ch WORD number of hash buckets containing no entries 2Eh WORD number of hash buckets containing one entry 30h WORD number of hash buckets containing two entries 32h WORD number of hash buckets containing three entries 34h WORD number of hash buckets containing four entries 36h WORD number of hash buckets containing five entries 38h WORD maximum contiguous sectors 3Ah WORD hash factor 3Ch WORD number of paragraphs of memory used below 1M 3Eh WORD entries per hash bucket 40h WORD idle delay in seconds 42h 2 BYTEs ??? 44h WORD staged write threshold percentage 46h 2 BYTEs ??? 48h WORD number of dirty sectors 4Ah WORD number of staged write buffers 4Ch WORD current cache size in KB 4Eh WORD beep frequency in Hz 50h WORD ??? 52h WORD ??? Bitfields for flags1: Bit(s) Description 0 beep on flush 3 hotkeys enabled 4 mouse idle check enabled 8 caching enabled 13 ??? --------c-138006CX6572----------------------- INT 13 - FAST! v4.02+ - INSTALLATION CHECK AX = 8006h CX = 6572h DX = 1970h ES:BX -> request packet (see below) Return: AX = 1965h if installed SeeAlso: AH=80h,AX=8001h,AX=8007h Format of request packet: Offset Size Description 00h DWORD -> 19-byte signature string (see AH=80h) --------c-138007CX6572----------------------- INT 13 - FAST! v4.02+ - UNHOOK INTERRUPTS AX = 8007h CX = 6572h DX = 1970h ES:BX -> request packet (see below) Return: AX = 1965h if installed SeeAlso: AH=80h,AX=8006h Index: uninstall;FAST! Format of request packet: Offset Size Description 00h DWORD -> 19-byte signature string (see AH=80h) --------c-1381--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = 81h SI = 4358h ??? Return: ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds to PC-Kwik v3.20 and PC-Cache v5.5 to PC-Kwik v3.27) returns immediately in PC-Cache v5.x Index: PC-Cache|Qualitas Qcache --------c-1382--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = 82h SI = 4358h ??? Return: AL = ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call SeeAlso: AH=84h Index: PC-Cache|Qualitas Qcache --------c-1383--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = 83h SI = 4358h AL = ??? ES:BX -> ??? ??? Return: ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call SeeAlso: AH=85h Index: PC-Cache|Qualitas Qcache --------c-1384--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = 84h SI = 4358h AL = ??? ??? Return: AL = ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call SeeAlso: AH=82h Index: PC-Cache|Qualitas Qcache --------c-1385--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = 85h SI = 4358h AL = ??? DL = ??? ??? Return: ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds to PC-Kwik v3.20) SeeAlso: AH=83h Index: PC-Cache|Qualitas Qcache --------c-1386--SI4358----------------------- INT 13 - Super PC-Kwik v4.00+ - ??? AH = 86h SI = 4358h ??? Return: ??? Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and thus supports this call Index: Qualitas Qcache --------c-1387--SI4358----------------------- INT 13 - Super PC-Kwik v4.00+ - ??? AH = 87h SI = 4358h ??? Return: AH = status??? (00h) CX = ??? DX = ??? (0000h) Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and thus supports this call Index: Qualitas Qcache --------c-1388--SI4358----------------------- INT 13 - Super PC-Kwik v4.00+ - ??? AH = 88h SI = 4358h ??? Return: AH = status??? (00h) CX = ??? DX = ??? (0000h) Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and thus supports this call Index: Qualitas Qcache --------c-1389--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 89h SI = 4358h ??? Return: ??? --------c-138A--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 8Ah SI = 4358h ??? Return: ??? --------c-138EED----------------------------- INT 13 - HyperDisk v4.01+ - ??? AX = 8EEDh ??? Return: ??? Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross) SeeAlso: AX=8EEEh,AX=8EEFh,AH=EEh,INT 2F/AH=DFh --------c-138EEE----------------------------- INT 13 - HyperDisk v4.01+ - ??? AX = 8EEEh Return: CF set AX = CS of HyperDisk resident code ??? Note: identical to AX=8EEFh in HYPERDKX v4.21-4.30 SeeAlso: AX=8EEDh,AX=8EEFh,AH=EEh --------c-138EEF----------------------------- INT 13 - HyperDisk v4.01+ - ??? AX = 8EEFh Return: CF set AX = CS of HyperDisk resident code ??? Note: identical to AX=8EEEh in HYPERDKX v4.21-4.30 SeeAlso: AX=8EEDh,AX=8EEEh,AH=EEh --------c-1392--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 92h SI = 4358h ??? Return: AH = status??? (00h) DL = ??? SeeAlso: AH=93h --------c-1393--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 93h SI = 4358h ??? Return: AH = status??? (00h) AL = ??? SeeAlso: AH=92h --------c-1394--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 94h SI = 4358h ??? Return: ??? --------c-1395--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 95h SI = 4358h ??? Return: AH = status??? (00h) DX = ??? --------c-1396--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 96h SI = 4358h AL = ??? (01h) BX = ??? (0790h) DL = ??? Return: AH = status??? (00h) DX = ??? --------c-1397--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 97h SI = 4358h ??? Return: ??? --------c-1398--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 98h SI = 4358h ??? Return: ??? --------c-1399--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 99h SI = 4358h ??? Return: ??? --------c-139A--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 9Ah SI = 4358h ??? Return: ??? --------c-139B--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 9Bh SI = 4358h ??? Return: ??? --------c-139C--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 9Ch SI = 4358h ??? Return: ??? Note: functions 9Ch and 9Dh are the only ones which are fully reentrant; all other PC-Kwik API calls (INT 13/81h-B0h) return AX=0200h and CF clear if a previous call is still in progress --------c-139D--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = 9Dh SI = 4358h ??? Return: ??? --------c-13A0--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - GET RESIDENT CODE SEGMENT AH = A0h SI = 4358h Return: AX = segment of resident code Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call (note that PC-Cache v5.5 corresponds to PC-Kwik v3.27) SeeAlso: INT 16/AX=FFA5h/CX=1111h Index: PC-Cache|Qualitas Qcache --------c-13A1--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - FLUSH CACHE AH = A1h SI = 4358h Return: CF clear AH = 00h (v5.10) Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call (note that PC-Cache v5.1 corresponds to PC-Kwik v3.20) SeeAlso: INT 16/AX=FFA5h/CX=FFFFh Index: PC-Cache|Qualitas Qcache --------c-13A2--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = A2h SI = 4358h ??? Return: ??? Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of Super PC-Kwik, and thus support this call (note that PC-Cache v5.1 corresponds to PC-Kwik v3.20) Index: PC-Cache|Qualitas Qcache --------c-13A3--SI4358----------------------- INT 13 U - Super PC-Kwik v5.10+ - DISABLE CACHE AH = A3h SI = 4358h Return: CF clear SeeAlso: AH=A4h --------c-13A4--SI4358----------------------- INT 13 U - Super PC-Kwik v5.10+ - ENABLE CACHE AH = A4h SI = 4358h Return: CF clear SeeAlso: AH=A3h --------c-13A5--SI4358----------------------- INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM TERMINATION NOTIFICATION AH = A5h SI = 4358h Return: AX = ??? SI = ??? Notes: called and used internally by Super PC-Kwik when a program terminates via INT 21/AH=00h, INT 21/AH=31h, or INT 21/AH=4Ch this call is not supported by Qualitas Qcache 4.00 Index: PC-Cache SeeAlso: AH=A6h,AH=A9h,INT 21/AH=00h,INT 21/AH=31h,INT 21/AH=4Ch --------c-13A6--SI4358----------------------- INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM LOAD NOTIFICATION AH = A6h SI = 4358h DS:DX -> ASCIZ program name ES:BX -> EXEC data block (see INT 21/AH=4Bh) Return: ??? Note: called and used internally by Super PC-Kwik when a program is loaded with INT 21/AX=4B00h SeeAlso: AH=A5h,AH=A9h,INT 21/AH=4Bh --------c-13A7--SI4358----------------------- INT 13 CU - Super PC-Kwik 5.1 - ??? AH = A7h SI = 4358h Return: ??? Note: called and used internally by Super PC-Kwik on some INT 21 calls SeeAlso: AH=A5h,AH=A6h,AH=A8h --------v-13A759----------------------------- INT 13 U - Novell DOS 7 - SDRes v27.03 - ??? AX = A759h Return: AX = 59A7h if installed DX:BX -> ??? data Program: SDRes is the resident portion of the Search&Destroy antiviral by Fifth Generation Systems, as bundled with Novell DOS 7 SeeAlso: INT 21/AH=0Eh/DL=ADh --------c-13A8--SI4358----------------------- INT 13 CU - Super PC-Kwik 5.1 - ??? AH = A8h SI = 4358h Return: ??? Note: called and used internally by Super PC-Kwik on some INT 21 calls SeeAlso: AH=A5h,AH=A6h,AH=A7h --------c-13A9--SI4358----------------------- INT 13 CU - Super PC-Kwik 5.1 - EXITCODE RETRIEVAL NOTIFICATION AH = A9h SI = 4358h Return: ??? Note: called and used internally by Super PC-Kwik when an application issues INT 21/AH=4Dh SeeAlso: AH=A5h,AH=A6h,INT 21/AH=4Dh --------c-13AA--SI4358----------------------- INT 13 - Super PC-Kwik v4+ - ??? AH = AAh SI = 4358h ??? Return: ??? Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports this call --------c-13AB--SI4358----------------------- INT 13 - Super PC-Kwik v4+ - ??? AH = ABh SI = 4358h ??? Return: ??? Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports this call --------c-13AC--SI4358----------------------- INT 13 - Super PC-Kwik v4+ - ??? AH = ACh SI = 4358h ??? Return: ??? Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports this call --------d-13AD------------------------------- INT 13 - Priam HARD DISK CONTROLLER??? AH = ADh ??? Return: ??? Note: this call is made from Priam's EFMT.EXE (low-level formatter), probably to check the ROM type on the controller for their hard disk kits SeeAlso: AH=70h --------c-13AD--SI4358----------------------- INT 13 - Super PC-Kwik v4+ - ??? AH = ADh SI = 4358h ??? Return: ??? Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports this call --------c-13AE--SI4358----------------------- INT 13 - Super PC-Kwik v5.10+ - ??? AH = AEh SI = 4358h ??? Return: ??? --------c-13B0--SI4358----------------------- INT 13 - Super PC-Kwik v3.20+ - ??? AH = B0h SI = 4358h ??? Return: ??? Note: PC Tools PC-Cache 5.x is an OEM version of Super PC-Kwik, and thus supports this call; Qualitas Qcache does not support it Index: PC-Cache --------d-13EE------------------------------- INT 13 - SWBIOS - SET 1024-CYLINDER FLAG AH = EEh DL = drive number (80h, 81h) Return: CF clear AH = 00h Program: SWBIOS is a TSR by Ontrack Computer Systems Desc: the following INT 13 call will add 1024 to the specified cylinder number to get the actual cylinder number desired Notes: the flag is cleared by all INT 13 calls except AH=EEh and AH=EFh Disk Manager also supports these calls this function is also supported by HyperDisk v4.01+ and PC-Cache v5.5+, in order to allow caching of drives using SWBIOS to access more than 1024 cylinders for software which supports that call, this function is equivalent to calling AH=EFh with CX=0400h SeeAlso: AH=F9h,AH=FEh,INT 16/AX=FFA5h/CX=1111h,INT 2F/AH=DFh Index: PC-Cache;huge disks|Disk Manager --------c-13EF------------------------------- INT 13 - Ontrack Drive Rocket - SET CYLINDER OFFSET AH = EFh CX = cylinder offset for next INT 13 call DL = drive number (80h, 81h) Return: CF clear AH = 00h Program: Drive Rocket is a drive accelerator by Ontrack Computer Systems for IDE drives supporting the read multiple and write multiple commands Desc: the following INT 13 call will add the number given by this call to the specified cylinder to get the actual cylinder number, then reset the offset to zero Note: this function is also supported by the NOW! disk cache, and presumably newer versions of SWBIOS and Disk Manager for software which supports this call, AH=EEh is equivalent to calling this function with CX=0400h the cylinder offset is reset to 0 by all INT 13 called except AH=EEh and AH=EFh SeeAlso: AX=7B00h --------d-13F9------------------------------- INT 13 - SWBIOS - INSTALLATION CHECK AH = F9h DL = drive number (80h,81h) Return: CF clear DX = configuration word bit 15 set if other SWBIOS extensions available CF set on error Program: SWBIOS is a TSR by Ontrack Computer Systems Note: Disk Manager also supports these calls SeeAlso: AH=EEh Index: Disk Manager --------v-13FA--DX5945----------------------- INT 13 - PC Tools v8+ VSAFE, VWATCH - API AH = FAh DX = 5945h AL = function (00h-07h) Return: varies by function if not installed: CF set AH = 01h Note: this API is identical to the ones on INT 16/AH=FAh and INT 21/AH=FAh, so it is listed in its entirety under INT 16/AX=FA00h and following SeeAlso: INT 16/AX=FA00h --------d-13FE------------------------------- INT 13 - SWBIOS - GET EXTENDED CYLINDER COUNT AH = FEh DL = drive number (80h, 81h) Return: CF clear DX = number of cylinders beyond 1024 on drive Program: SWBIOS is a TSR by Ontrack Computer Systems Notes: standard INT 13/AH=08h will return a cylinder count truncated to 1024 BIOS without this extension would return count modulo 1024 Disk Manager also supports these calls SeeAlso: AH=EEh --------U-13FFFFBHAA------------------------- INT 13 - UNIQUE UX Turbo Utility - SET TURBO MODE AX = FFFFh BH = AAh BL = subfunction 00h installation check Return: AX = 1234h if installed 01h turn on Turbo mode 02h turn off Turbo mode 03h set Turbo mode according to hardware switch 04h set disk access to Turbo mode 05h set disk access to Normal mode SeeAlso: INT 15/AH=DFh Index: installation check;UNIQUE UX Turbo Utility --------!------------------------------------