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Interrupt List, part 2 of 9 This compilation is Copyright (c) 1989,1990,1991,1992,1993 Ralf Brown --------t-15--------------------------------- INT 15 - Microsoft TSR Specification No additional information available at this time. --------B-1500------------------------------- INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only) AH = 00h Return: CF set on error AH = 86h no cassette present CF clear if successful SeeAlso: AH=01h"CASSETTE" --------M-1500------------------------------- INT 15 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS AH = 00h Return: CX = signed X count DX = signed Y count --------O-1500------------------------------- INT 15 - VMiX v2+ - INSTALLATION CHECK AH = 00h Return: DX = 0798h if installed AX = version (AH = major, AL = minor) --------T-1500------------------------------- INT 15 - MultiDOS Plus - GIVE UP TIME SLICE AH = 00h Note: if issued by the highest-priority task while MultiDOS is using priority-based rather than round-robin scheduling, control will be returned to the caller immediately SeeAlso: AH=03h"MultiDOS",AX=1000h --------B-1501------------------------------- INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only) AH = 01h Return: CF set on error AH = 86h no cassette present CF clear if successful SeeAlso: AH=00h"CASSETTE" --------b-1501------------------------------- INT 15 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM AH = 01h AL = NVRAM location (00h to 3Fh) BL = NVRAM data value Return: AH = return code 00h OK 01h address bad 02h write error SeeAlso: AH=02h"Amstrad" Format of NVRAM: Offset Size Description 00h BYTE time of day: seconds 01h BYTE alarm time: seconds 02h BYTE time of day: minutes 03h BYTE alarm time: minutes 04h BYTE time of day: hours 05h BYTE alarm time: hours 06h BYTE day of week, 1 = Sunday 07h BYTE day of month 08h BYTE month 09h BYTE year mod 100 0Ah BYTE RTC status register A bit 7: set if date/time being updated bits 6-4: time base speed, default 010 = 32768 Hz bits 3-0: interrupt rate selection, default 0110 = 1024 Hz 0Bh BYTE RTC status register B (see below) 0Ch BYTE RTC status register C (read-only) bit 7: IRQF flag bit 6: PF flag bit 5: AF flag bit 4: UF flag 0Dh BYTE RTC status register D bit 7: battery good 0Eh 6 BYTEs time and date machine last used 14h BYTE user RAM checksum 15h WORD Enter key scancode/ASCII code 17h WORD Forward delete key scancode/ASCII code 19h WORD Joystick fire button 1 scancode/ASCII code 1Bh WORD Joystick fire button 2 scancode/ASCII code 1Dh WORD mouse button 1 scancode/ASCII code 1Fh WORD mouse button 2 scancode/ASCII code 21h BYTE mouse X scaling factor 22h BYTE mouse Y scaling factor 23h BYTE initial VDU mode and drive count 24h BYTE initial VDU character attribute 25h BYTE size of RAM disk in 2K blocks 26h BYTE initial system UART setup byte 27h BYTE initial external UART setup byte 28h 24 BYTEs available for user application Note: bytes 00h-0Dh are the same on the IBM AT as they are used/updated by the clock chip Bitfields for RTC status register B: bit 7 clear if normal update, set if abort update bit 6 periodic interrupt enable bit 5 alarm interrupt enable bit 4 update end interrupt enable bit 3 square wave enable bit 2 date mode (clear = BCD, set = binary) bit 1 24-hour format bit 0 daylight saving time enable --------O-1501------------------------------- INT 15 - VMiX - "sys_chanreq" - I/O CHANNEL OBJECT MANAGER AH = 01h STACK: WORD object ID of requestor DWORD pointer to ASCIZ name of requested method "assign" assign channel to object "deassign" deassign channel "cursor" set cursor on/off "init" initialize comm port "open" open I/O channel "position" set cursor position "receive" get buffered packet from comm port "send" send buffered packet to comm port "vio" set current virtual I/O to specified channel "window" make window at cursor position ---if "assign"--- WORD object UID WORD caller UID/PID DWORD CSL with port ---if "deassign"--- WORD channel ID ---if "cursor"--- WORD channel ID (must be a SRCSINK) WORD new state (0000h off, 0001h on) ---if "init"--- WORD channel ID (must be a SRCSINK) WORD comm port number (00h-03h) WORD UART init code ---if "open"--- WORD channel ID ---if "position"--- WORD channel ID (must be a SRCSINK) WORD position (high byte = row, low byte = column) ---if "receive"--- DWORD pointer to buffer ---if "send"--- WORD length of buffer DWORD pointer to buffer ---if "vio"--- WORD channel ID (must be a SRCSINK) ---if "window"--- WORD top left (high byte = row, low byte = column) WORD bottom right (high byte = row, low byte = column) Return: DX:AX -> IRP structure or 0000h:0000h SeeAlso: AH=00h"VMiX",AH=02h"VMiX" --------T-1501------------------------------- INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE AH = 01h AL = semaphore number (00h-3Fh) Return: AH = status 00h successful 02h invalid semaphore number Notes: if the semaphore is not owned, ownership is assigned to the calling task and the call returns immediately if the semaphore is already owned by another task, the calling task is placed on a queue for the semaphore and suspended until it can become owner of the semaphore semaphore 0 is used internally by MultiDOS to synchronize DOS access SeeAlso: AH=02h"MultiDOS",AH=10h"MultiDOS",AH=1Bh"MultiDOS" --------B-1502------------------------------- INT 15 - CASSETTE - READ DATA AH = 02h CX = number of bytes to read ES:BX -> buffer Return: CF clear if successful DX = number of bytes read ES:BX -> byte following last byte read CF set on error AH = status (see below) SeeAlso: AH=00h"CASSETTE",AH=03h"CASSETTE" Values for status: 00h successful 01h CRC error 02h bad tape signals 04h no data 80h invalid command 86h no cassette present --------b-1502------------------------------- INT 15 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM AH = 02h AL = NVRAM location (00h to 3Fh) Return: AH = return code 00h OK 01h address bad 02h checksum error AL = NVRAM data value SeeAlso: AH=01h"Amstrad" --------O-1502------------------------------- INT 15 - VMiX - "sys_memreq" - MEMORY OBJECT MANAGER AH = 02h STACK: WORD object ID of requestor DWORD pointer to ASCIZ name of requested method "assign" allocate low memory block "assign extended" allocate extended memory pages "assign gdt" allocate GDT selector "paged" allocate low paged memory "paged extended" alllocate extended memory pages "deassign" free memory block "deassign gdt" free GDT selector "getvpage" get physical address for virtual page "setvpage" set physical address for virtual page "info" get VMiX memory usage info block "move" move contents of 32-bit memory "newmcb" make new DOS memory control block "owner" get process ID of MCB or PSP owner "umb" allocate upper memory block "video" toggle system use of vidoe memory and get stat ---if "assign"--- WORD number of objects WORD size in bytes (multiple of 512 bytes) ---if "assign extended"--- WORD number of objects WORD size in bytes (multiple of 4K) ---if "assign gdt"--- WORD access type (low byte) WORD segment size in paragraphs DWORD pointer to start of physical segment ---if "paged"--- WORD number of 512-byte pages ---if "paged extended" WORD number of 4K pages ---if "deassign"--- DWORD pointer returned by previous allocation call ---if "deassign gdt"--- WORD GDT selector ---if "getvpage"--- WORD owner's process ID DWORD pointer to buffer for page structure (struct VPGE) ---if "setvpage"--- WORD owner's process ID DWORD pointer to new page structure (struct VPGE) ---if "info"--- no additional arguments ---if "move" DWORD 32-bit source address DWORD 32-bit destination address WORD number of words to move ---if "newmcb"--- DWORD pointer to new MCB's location WORD size of memory block DWORD pointer to ASCIZ name string (max 8 chars) ---if "owner"--- WORD MCB or PSP segment ---if "umb"--- WORD size in paragraphs ---if "video"--- no additional arguments Return: DX:AX -> memory block or VPGE struct or 0000h:0000h SeeAlso: AH=00h"VMiX",AH=01h"VMiX" --------T-1502------------------------------- INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE AH = 02h AL = semaphore number (00h-3Fh) Return: AH = status 00h successful 01h not semaphore owner 02h invalid semaphore number Notes: if any tasks are waiting for the semaphore, the first task on the wait queue will become the new owner and be reawakened do not use within an interrupt handler SeeAlso: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS" --------B-1503------------------------------- INT 15 - CASSETTE - WRITE DATA (PC and PCjr only) AH = 03h CX = number of bytes to write ES:BX -> data buffer Return: CF clear if successful ES:BX -> byte following last byte written CF set on error AH = status (see AH=02h"CASSETTE") CX = 0000h SeeAlso: AH=00h"CASSETTE",AH=02h"CASSETTE" --------V-1503------------------------------- INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER AH = 03h AL = value (I,R,G,B bits) SeeAlso: AH=04h"Amstrad" --------O-1503------------------------------- INT 15 - VMiX - "sys_pinput" - PROMPTED CONSOLE INPUT AH = 03h STACK: DWORD pointer to ASCII prompt WORD field outline character WORD length of input field (max 7Fh) DWORD address of pointer to input buffer Return: AX = length of input (input buffer is padded with blanks) SeeAlso: AH=04h"VMiX" --------T-1503------------------------------- INT 15 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL AH = 03h DX = number of time slices to remain suspended Return: after specified interval has elapsed Note: when priority-based scheduling is in use, high-priority tasks should use this function to yield the processor SeeAlso: AH=00h"MultiDOS",AH=0Ah"MultiDOS" --------B-1504------------------------------- INT 15 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS) AH = 04h ES:DI -> results buffer length 20h for System Parameter Table DS = segment containing ABIOS RAM extensions (zero if none) Return: AH = 00h success: results at ES:DI CF set on failure SeeAlso: AH=05h"ABIOS",C1h Format of ABIOS System Parameter Table: Offset Size Description 00h DWORD FAR address of ABIOS Common Start Routine 04h DWORD FAR address of ABIOS Interrupt Routine 08h DWORD FAR address of ABIOS Time-out Routine 0Ch WORD number of bytes of stack required by this ABIOS implementation 0Eh 16 BYTEs reserved 1Eh WORD number of entries in initialization table --------V-1504------------------------------- INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER AH = 04h AL = value (RDSEL1 and RDSEL0) SeeAlso: AH=03h"Amstrad",05h"Amstrad" --------O-1504------------------------------- INT 15 - VMiX - "sys_vprintf" - FORMATTED OUTPUT TO STREAM AH = 04h STACK: DWORD control string DWORD array of arguments SeeAlso: AH=03h"VMiX" --------T-1504------------------------------- INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK AH = 04h AL = mailbox number (00h-3Fh) CX = message length in bytes DS:SI -> message Return: AH = status 00h successful 01h out of message memory 02h invalid mailbox number Note: the message is copied into a system buffer; the caller may immediately reuse its buffer SeeAlso: AH=05h"MultiDOS" --------B-1505------------------------------- INT 15 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS) AH = 05h ES:DI -> results buffer length (18h * Number_of_Entries) DS = segment containing ABIOS RAM extensions (zero if none) Return: AH = 00h success: results at ES:DI CF set on failure SeeAlso: AH=04h"ABIOS",C1h Format of one entry of ABIOS Initialization Table: Offset Size Description 00h WORD device ID 02h WORD number of Logical IDs 04h WORD Device Block length (zero for ABIOS patch or extension) 06h DWORD -> init routine for Device Block and Function Transfer Table 0Ah WORD request block length 0Ch WORD Function Transfer Table length (zero for a patch) 0Eh WORD Data Pointers length (in Common Data Area) 10h BYTE secondary device ID (hardware level this ABIOS ver supports) 11h BYTE revision (device driver revision level this ABIOS supports) 12h 6 BYTEs reserved --------V-1505------------------------------- INT 15 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER AH = 05h AL = value (I,R,G,B bits) SeeAlso: AH=04h"Amstrad" --------O-1505------------------------------- INT 15 - VMiX - "sys_getpid" - GET PROCESS ID OF CURRENT PROCESS AH = 05h Return: AX = process ID SeeAlso: AH=06h"VMiX",AH=0Bh"VMiX" --------T-1505------------------------------- INT 15 - MultiDOS Plus - CHECK MAILBOX AH = 05h AL = mailbox number (00h-3Fh) Return: AH = status 00h successful DX = length of first message in queue, 0000h if no message 02h invalid mailbox number SeeAlso: AH=04h"MultiDOS",AH=06h"MultiDOS" --------b-1506------------------------------- INT 15 - Amstrad PC1512 - GET ROS VERSION NUMBER AH = 06h Return: BX = version number --------O-1506------------------------------- INT 15 - VMiX - "sys_getpcb" - GET POINTER TO PROCESS CONTROL BLOCK AH = 06h STACK: WORD process ID Return: DX:AX -> process control block SeeAlso: AH=05h"VMiX",AH=07h"VMiX",AH=08h"VMiX" --------T-1506------------------------------- INT 15 - MultiDOS Plus - READ MAILBOX AH = 06h AL = mailbox number (00h-3Fh) CX = size of buffer in bytes ES:DI -> buffer for message Return: AH = status 00h successful CX = number of bytes copied DX = actual length of message 02h invalid mailbox number Note: if the caller's buffer is not large enough, the message is truncated and the remainder is lost SeeAlso: AH=04h"MultiDOS",AH=05h"MultiDOS" --------O-1507------------------------------- INT 15 - VMiX - "sys_getocb" - GET POINTER TO OBJECT CONTROL BLOCK AH = 07h STACK: WORD object type Return: DX:AX -> object control block SeeAlso: AH=06h"VMiX",AH=08h"VMiX" --------T-1507------------------------------- INT 15 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD) AH = 07h BX:CX = entry point of new task DX = stack size in paragraphs Return: AH = status 00h successful 01h no free task control blocks 02h no free memory for task's stack Note: execution returns immediately to calling task SeeAlso: AH=08h"MultiDOS",AH=09h"MultiDOS",AH=13h"MultiDOS" --------O-1508------------------------------- INT 15 - VMiX - "sys_getccb" - GET CHANNEL CONTROL BLOCK AH = 08h STACK: WORD channel ID Return: DX:AX -> channel control block SeeAlso: AH=06h"VMiX",AH=07h"VMiX" --------T-1508------------------------------- INT 15 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD) AH = 08h Return: calling task terminated, so execution never returns to caller Notes: an internal task must be terminated with this function rather than a DOS termination function task's stack space is returned to parent task's memory pool SeeAlso: AH=07h"MultiDOS" --------O-1509------------------------------- INT 15 - VMiX - "sys_getqueue" - GET ID OF QUEUED ELEMENT AH = 09h STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type) WORD subqueue ID Return: AX = queue ID SeeAlso: AH=0Ah"VMiX" --------T-1509------------------------------- INT 15 - MultiDOS Plus - CHANGE TASK'S PRIORITY AH = 09h AL = new priority Note: the priority has different meanings depending on whether priority- based or round-robin scheduling is used SeeAlso: AH=07h"MultiDOS" --------O-150A------------------------------- INT 15 - VMiX - "sys_qetqnext" - GET ID OF NEXT QUEUED ELEMENT AH = 0Ah STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type) WORD ID of current element in queue chain Return: AX = ID of next element SeeAlso: AH=09h"VMiX",AH=0Fh"VMiX" --------T-150A------------------------------- INT 15 - MultiDOS Plus - CHANGE TIME SLICE INTERVAL AH = 0Ah AL = new interval 00h = 55.0 ms (default) 80h = 27.5 ms 40h = 13.75 ms 20h = 6.88 ms 10h = 3.44 ms 08h = 1.72 ms SeeAlso: AH=03h"MultiDOS" --------O-150B------------------------------- INT 15 - VMiX - "sys_sysreq" - SYSTEM CONFIGURATION MANAGER AH = 0Bh STACK: WORD caller's UID DWORD pointer to ASCIZ name of requested method "abort" abort current send/receive on comm port "block" start/end critical section "close" terminate interrupt-drive comm I/O "open" prepare comm port for interrupt-driven I/O "delay" set delay timer and wait "hibernate" put process to sleep "ints" enable/disable interrupt-driven INT 14h "length" get current send/receive buffer offsets "kswitch" switch stacks "numproc" get number of active processes "protocol" set protocol function for comm interrupts "relocate" set/reset VMiX flag for relocating to himem "status" get current open comm port status "wake" awaken a process "xport" get comm port polled for logins ---if "abort"--- no additional arguments ---if "block"--- WORD 0000h end, 0001h start ---if "close"--- no additional arguments ---if "open"--- WORD comm port (00h-03h) WORD BIOS parameter byte (see INT 14/AH=00h), except bits 7-5 = 000 for 19200, 001 for 38400, 011 for 115200 ---if "delay"--- WORD time in seconds ---if "hibernate"--- WORD process ID ---if "ints"--- WORD 0000h if no, 0001h if yes ---if "length","numproc","relocate","status","xport"--- no additional arguments ---if "kswitch"--- DWORD pointer to new stack ---if "protocol"--- DWORD pointer to function (must be in low "assign"ed memory when in 386 mode) ---if "wake"--- WORD process ID Return: DX:AX -> result or 0000h:0000h ---if "length"--- BYTE receive offset BYTE send offset ---if "kswitch"--- DWORD old stack pointer ---if "numproc"--- WORD number of active processes ---if "status"--- current open comm port status ---if "xport"--- current comm port being polled for logins SeeAlso: AH=05h"VMiX",AH=0Eh"VMiX" --------T-150B------------------------------- INT 15 - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY AH = 0Bh Notes: sets calling task's screen pointer to actual screen memory; the pointer may be restored with AH=0Ch caller's video mode must be same as foreground task's video mode any text written while in the background will be saved to the foreground task's virtual screen when it switches to the background useful if a background task wants to display a message on the foreground screen SeeAlso: AH=0Ch"MultiDOS" --------O-150C------------------------------- INT 15 - VMiX - "sys_getstack" - GET POINTER TO PROCESS TSS STACK AH = 0Ch STACK: WORD process ID Return: DX:AX -> TSS stack store SeeAlso: AH=00"VMiX" --------T-150C------------------------------- INT 15 - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY AH = 0Ch Note: restores task's screen pointer saved by AH=0Bh; must not be called unless AH=0Bh has been called first SeeAlso: AH=0Bh"MultiDOS" --------O-150D------------------------------- INT 15 - VMiX - "sys_spawn" - START A CHILD PROCESS JOB SHELL AH = 0Dh STACK: DWORD ASCIZ string starting with requested I/O channel and followed by standard VMiX shell command string Return: AX = process ID or error code "SYS_ERROR" Note: the maximum string length is 7Fh characters SeeAlso: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh --------T-150D------------------------------- INT 15 - MultiDOS Plus - DISABLE MULTITASKING AH = 0Dh Note: calling task receives all time slices until AH=0Eh is called; this allows time-critical events or nonreentrant code to be processed SeeAlso: AH=0Eh"MultiDOS",AH=10h"MultiDOS",AX=101Bh,AH=20h"MultiDOS" --------O-150E------------------------------- INT 15 - VMiX - "sys_kill" - HARD TERMINATE PROCESS AH = 0Eh STACK: WORD process ID Return: AX = status (SYS_OK or SYS_ERROR) SeeAlso: AH=0Bh"VMiX",AH=0Dh"VMIX" --------T-150E------------------------------- INT 15 - MultiDOS Plus - ENABLE MULTITASKING AH = 0Eh SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AH=20h"MultiDOS" --------d-150F------------------------------- INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only) AH = 0Fh AL = phase code 00h reserved 01h surface analysis 02h formatting Return: CF clear if formatting should continue, set if it should terminate Note: called during ESDI drive formatting after each cylinder is completed SeeAlso: INT 13/AH=1Ah --------O-150F------------------------------- INT 15 - VMiX - "sys_getqkey" - GET KEY FIELD OF QUEUED ELEMENT AH = 0Fh STACK: WORD queue ID (0 = process queue, 1 = object q, 3 = type q) WORD ID of element in queue chain Return: AX = key SeeAlso: AH=0Ah"VMiX" --------T-150F------------------------------- INT 15 - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND AH = 0Fh DS:BX -> ASCIZ command Return: after command has been processed Notes: specified string is executed as if it had been typed at the MultiDOS command prompt the task is placed on a queue which MultiDOS examines periodically and is suspended until MultiDOS has processed the command all lowercase characters up to the first blank are converted to upper case within the given buffer --------O-1510------------------------------- INT 15 - VMiX - "sys_virtual" - EXECUTE CONFORMING FUNCTION IN PROTECTED MODE AH = 10h STACK: DWORD pointer to function N WORDs function args Return: AX = function's return value??? (not specified in documentation) Note: while the function is executing, the following global descriptors are available: 20h stack segment 38h code segment of function 40h data alias for function's code segment additional GDT descriptors can be allocated using AH=02h with function "assign gdt" SeeAlso: AH=02h"VMiX",AH=51h"VMiX" --------T-1510------------------------------- INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE AH = 10h AL = semaphore number (00h-3Fh) Return: AH = status 00h semaphore not in use 01h semaphore owned by another task 02h invalid semaphore number 03h semaphore owned by caller SeeAlso: AH=02h"MultiDOS",AH=0Dh"MultiDOS",AH=1Dh"MultiDOS" --------Q-151000----------------------------- INT 15 - TopView - "PAUSE" - GIVE UP CPU TIME AX = 1000h Return: after other processes run Note: under DESQview, if the process issuing this call has hooked INT 08h, the current time-slice is set to expire at the next clock tick rather than immediately SeeAlso: AH=00h"MultiDOS",AX=5305h,INT 21/AH=89h,INT 21/AH=EEh"DoubleDOS" SeeAlso: INT 2F/AX=1680h,INT 60/DI=0106h,INT 62/AH=01h,INT 7A/BX=000Ah SeeAlso: INT 7F/AH=E8h --------Q-151001----------------------------- INT 15 - TopView - "GETMEM" - ALLOCATE "SYSTEM" MEMORY AX = 1001h BX = number of bytes to allocate Return: ES:DI -> block of memory or 0000h:0000h (DV v2.26+) AX = status (DV v2.42) 0000h successful 0001h failed Note: use SETERROR (AX=DE15h) to avoid a user prompt if there is insufficient common memory. Under DV v2.42, this call never generates a user prompt regardless of the SETERROR value; instead, it always returns AX=0001h and ES:DI=0000h:0000h if out of memory SeeAlso: AX=1002h,AX=102Eh,AX=DE0Ch,AX=DE15h --------Q-151002----------------------------- INT 15 - TopView - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY AX = 1002h ES:DI -> previously allocated block Return: block freed SeeAlso: AX=1001h,AX=DE0Dh --------Q-151003----------------------------- INT 15 - TopView - "PRINTC" - DISPLAY CHARACTER/ATTRIBUTE ON SCREEN AX = 1003h BH = attribute BL = character DX = segment of object handle for window Note: BX=0 does not display anything, it only positions the hardware cursor --------Q-1510------------------------------- INT 15 - TopView - UNIMPLEMENTED IN DV 2.x AH = 10h AL = 04h thru 12h Return: pops up "Programming error" window in DV 2.x --------Q-151013----------------------------- INT 15 - TopView - "GETBIT" - DEFINE A 2ND-LEVEL INTERRUPT HANDLER AX = 1013h ES:DI -> FAR service routine Return: BX = bit mask indicating which bit was allocated 0000h if no more bits available SeeAlso: AX=1014h,AX=1015h Note: only a few TopView/DESQview API calls are allowed during a hardware interrupt; if other calls need to be made, the interrupt handler must schedule a 2nd-level interrupt with "SETBIT" (AX=1015h) --------Q-151014----------------------------- INT 15 - TopView - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER AX = 1014h BX = bit mask from INT 15/AX=1013h SeeAlso: AX=1013h,AX=1015h --------Q-151015----------------------------- INT 15 - TopView - "SETBIT" - SCHEDULE ONE OR MORE 2ND-LEVEL INTERRUPTS AX = 1015h BX = bit mask for interrupts to post Return: indicated routines will be called: (DV 2.0x) at next task switch (DV 2.2x) immediately on return from hardware interrupt SeeAlso: AX=1013h,AX=1014h Notes: this is one of the few TopView calls which are allowed from a hardware interrupt handler the handler will be called with ES containing the segment of the handle of the next task to be executed; on return, ES must be the segment of a task handle --------Q-151016----------------------------- INT 15 - TopView - "ISOBJ" - VERIFY OBJECT HANDLE AX = 1016h ES:DI = possible object handle Return: BX = FFFFh if ES:DI is a valid object handle 0000h if ES:DI is not Note: under DESQview versions prior to 2.50, an object handle is always a pointer to the object; for versions 2.50 and up, only task handles are always pointers (other handles may consist of a unique object number and offset into DESQview's common memory) SeeAlso: AX=DE14h,AX=DE2Bh,AX=DE2Ch Format of object: Offset Size Description 00h WORD offset in common memory of previous object of same type 02h WORD offset in common memory of next object of same type 04h WORD signature FEDCh (DV 2.42-) signature FEDCh or object number (DV 2.50+) 06h WORD object type 00h window/task 01h mailbox 02h keyboard 03h timer 04h pointer 05h panel 06h objectq 08h DWORD object handle to return to caller 0Ch DWORD canonicalized object address (segment = common memory) 10h WORD offset in common memory of owning task 12h WORD mapping context offset in common memory of mapping context record (see below) remainder varies by object type and DESQview version ---v2.42 keyboard object--- 14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT") bit 15: keyboard opened 16h 4 BYTEs ??? 1Ah WORD priority in OBJECTQ??? 1Ch ... 25h WORD offset in common memory of ??? task 27h 4 BYTEs ??? ---v2.42 objectq object--- 14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT") bit 15: OBJECTQ opened 16h 2 BYTEs ??? 18h WORD offset in common memory of ??? task 1Ah 6 BYTEs ??? ---v2.42 mailbox object--- 14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT") bit 15: mailbox opened 1Ah WORD priority in OBJECTQ??? 1Ch 6 BYTEs ??? 22h WORD offset in common memory of mailbox name (counted string) 0000h if no name <= 5 BYTEs ??? ---v2.22-2.42 window/task object--- 14h BYTE 00h window, 01h task 15h BYTE internal (not Switch menu) window number??? 16h BYTE internal (not Switch menu) window number??? 17h WORD segment of internal window record 19h 2 BYTEs ??? 1Bh BYTE cursor row 1Ch BYTE cursor column 1Dh 2 BYTEs ??? 1Fh BYTE window height (logical) 20h BYTE window width (logical) 21h BYTE window position, row 22h BYTE window position, column 23h BYTE window height (visible) 24h BYTE window width (visible) 25h BYTE row of top of frame (or window if unframed) 26h BYTE column of left of frame (or window if unframed) 27h BYTE window height (physical, including frame) 28h BYTE window width (physical, including frame) 29h 6 BYTEs ??? 2Fh BYTE ??? initially logical window height 30h BYTE ??? initially logical window width 31h 2 BYTEs ??? 33h BYTE minimum height of window 34h BYTE minimum width of window 35h BYTE maximum height of window 36h BYTE maximum width of window 37h 3 BYTEs ??? 3Ah 8 BYTEs window frame characters: ul,ur,ll,lr,t,b,l,r 42h 24 BYTEs attributes??? 5Ah 8 BYTEs window frame characters: ul,ur,ll,lr,t,b,l,r 62h 3 BYTEs ??? 65h BYTE ??? bitflags 66h 2 BYTEs ??? 68h WORD offset in common memory of window name or 0000h if untitled 6Ah WORD length of window name 6Ch 2 BYTEs ??? 6Eh WORD offset of logical cursor in window (in character cells) 70h DWORD pointer to field table for window 74h BYTE ??? 75h 2 BYTEs ??? 77h BYTE number of last-visited field 78h DWORD pointer to field table entry for last-visited field 7Ch 3 BYTEs ??? 7Fh BYTE select field marker character 80h BYTE ??? bit flags bit 0: allow ECh window stream opcode to change reverse logattr bit 1: alternate field processing mode selected 81h BYTE ??? 82h DWORD notification function (manager stream opcode 8Ah) no notification if segment = 0000h 86h DWORD notification argument (manager stream opcode 8Bh) 8Ah WORD offset in common memory of ??? window object or 0000h 8Ch WORD offset in common memory of ??? window object or 0000h 8Eh WORD offset in common memory of ??? window object or 0000h 90h BYTE ??? bitflags 91h BYTE ??? ---task object only 92h BYTE bit flags (bits 0-4) 93h BYTE character for ??? (default 20h) 94h BYTE ??? flag 95h WORD offset in common memory of ??? 97h 2 BYTEs ??? 99h WORD ??? 9Bh BYTE ??? bit flags bit 3: ??? bit 6: perform protected-attribute processing on select fields 9Ch BYTE ??? 9Dh WORD offset in common memory of current register save record (see below). No register save record in use if < 01C0h 9Fh WORD offset in common memory of task's keyboard object A1h WORD offset in common memory of task's OBJECTQ object A3h WORD offset in common memory of task's mailbox object A5h WORD semaphore: FFFFh if on user stack, else on task's private stack A7h DWORD user's SS:SP ABh WORD task's private SP (SS read from offset 0Ah) ADh 6 BYTEs ??? B3h BYTE ??? bit flags bit 0: run in foreground only B4h BYTE ??? B5h BYTE ??? bitflags B6h BYTE task status (see AX=DE2Ch) B7h 9 BYTEs ??? C0h WORD head pointer for keyboard buffer (wraps back to 00h after 80h) C2h WORD tail pointer for keyboard buffer (wraps back to 00h after 80h) C4h 2 BYTEs ??? (0000h) C6h WORD segment of keyboard buffer for task C8h WORD offset in common memory of ??? keyboard object CAh BYTE ??? CBh WORD offset in common memory of ??? object CEh BYTE ??? flag CFh WORD offset in common memory of default notify window for task or 0000h if none D1h 4 BYTEs ??? D5h BYTE window number on Switch Window menu D6h 5 BYTEs ??? DBh WORD offset in common memory of ??? object DDh 2 BYTEs ??? DFh WORD API level for task E1h WORD offset in common memory of ??? keyboard object E7h WORD segment of ??? E9h 18 BYTEs ??? FBh WORD ??? FDh BYTE ??? FFh 26 BYTEs ??? 119h DWORD SS:SP for ??? 11Dh 4 BYTEs ??? 121h DWORD pointer to ??? 125h 35 BYTEs ??? ---v2.22 145h task's default keyboard object ---v2.42 148h WORD ??? 14Ah BYTE ??? 14Dh 42 BYTEs task's default keyboard object 177h 32 BYTEs task's ObjectQ object 197h 41 BYTEs task's default mailbox object 1C0h 24 BYTEs first register save record 450h -- default top of private stack Format of Register Save Record: Offset Size Description 00h WORD AX 02h WORD BX 04h WORD CX 06h WORD DX 08h WORD DI 0Ah WORD SI 0Eh WORD DS 10h WORD ES 12h DWORD return address 16h WORD original flags Format of mapping context record: Offset Size Description 00h WORD segment of start of system memory chain 02h WORD size of process's memory in paragraphs 04h 15 BYTEs ??? 13h BYTE reference count --------Q-151017----------------------------- INT 15 - TopView - UNIMPLEMENTED IN DV 2.x AX = 1017h Return: pops up "Programming error" window in DV 2.x --------Q-151018----------------------------- INT 15 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION AX = 1018h BH = column BL = row ES = segment of object handle for window below which to search 0000h = start search with topmost window Return: ES = segment of object handle for window which is visible at the indicated position, or covered by indicated window = 0000h no window SeeAlso: AX=1023h,AX=1024h --------Q-151019----------------------------- INT 15 - TopView - "SOUND" - MAKE TONE AX = 1019h BX = frequency in Hertz (0000h = silence) CX = duration in clock ticks (18.2 ticks/sec) Return: immediately, tone continues to completion Notes: if another tone is already playing, the new tone does not start until completion of the previous one. Up to 32 tones may be queued before the process is blocked until a note completes. in DV 2.00, the lowest tone allowed is 20 Hz if CX = 0, the current note is cancelled; if BX = 0 as well, all queued notes are also cancelled SeeAlso: INT 16/AH=73h --------Q-15101A----------------------------- INT 15 - TopView - "OSTACK" - SWITCH TO TASK'S INTERNAL STACK AX = 101Ah Return: stack switched Notes: this call may not be nested; a second call must be preceded by a call to "USTACK" (AX=1025h) while TopView requires many API calls to be executed while on the task's internal stack, DESQview allows those calls to be executed regardless of the current stack SeeAlso: AX=1025h --------Q-15101B----------------------------- INT 15 - TopView - "BEGINC" - BEGIN CRITICAL REGION AX = 101Bh Return: task-switching temporarily disabled Notes: will not task-switch until "ENDC" (AX = 101Ch) called unless task voluntarily releases the CPU (upon regaining the CPU, task-switching will again be disabled) suspends the caller until DOS is free SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AX=DE13h,AX=DE1Ch,INT 2F/AX=1681h SeeAlso: INT 60/DI=0602h --------Q-15101C----------------------------- INT 15 - TopView - "ENDC" - END CRITICAL REGION AX = 101Ch Return: task-switching enabled Note: this API call may be made from within a hardware interrupt handler SeeAlso: AX=101Bh,AX=DE13h,AX=DE1Bh,INT 2F/AX=1682h,INT 60/DI=0603h --------Q-15101D----------------------------- INT 15 - TopView - "STOP" - STOP TASK AX = 101Dh ES = segment of object handle for task to be stopped (== handle of main window for that task) Return: indicated task will not get any CPU time until restarted with AX=101Eh Note: once a task has been stopped, additional "STOP"s are ignored BUG: in DV 2.00, this function is ignored unless the indicated task is the current task SeeAlso: AX=101Eh,AX=102Bh,AH=12h"VMiX",INT 21/AH=81h --------Q-15101E----------------------------- INT 15 - TopView - "START" - START TASK AX = 101Eh ES = segment of object handle for task to be started (== handle of main window for that task) Return: indicated task is started up again Note: once a task has been started, additional "START"s are ignored SeeAlso: AX=101Dh,AX=102Bh,INT 21/AH=82h --------Q-15101F----------------------------- INT 15 - TopView - "DISPEROR" - POP-UP ERROR WINDOW AX = 101Fh BX = bit fields bits 0-12: number of characters to display bits 13,14: which mouse button may be pressed to remove window 00 = either 01 = left 10 = right 11 = either bit 15: beep if 1 ES:DI -> text of message CH = width of error window (0 = default) CL = height of error window (0 = default) DX = segment of object handle Return: BX = status: 1 = left button, 2 = right, 27 = ESC pressed Note: window remains on-screen until ESC or indicated mouse button is pressed --------Q-151020----------------------------- INT 15 - TopView - UNIMPLEMENTED IN DV v2.00+ AX = 1020h Return: pops up "Programming error" window in DV v2.00+ --------Q-151021----------------------------- INT 15 - TopView - "PGMINT" - INTERRUPT ANOTHER TASK AX = 1021h BX = segment of object handle for task to interrupt (not self) DX:CX -> FAR routine to jump to next time task is run Return: nothing Notes: the FAR routine is entered with the current ES, DS, SI, DI, and BP values, using the task's internal stack (see AX=101Ah); only SS:SP needs to be preserved multiple PGMINTs to a single task are processed last-in first-out if the other task is in a DOS or DV API call, the interruption will occur on return from that call --------Q-151022BX0000----------------------- INT 15 - TopView - "GETVER" - GET VERSION AX = 1022h BX = 0000h Return: BX nonzero, TopView or compatible loaded (BL = major version, BH = minor version) Notes: TaskView returns BX = 0001h, DESQview v2.00+ returns BX = 0A01h --------Q-151023----------------------------- INT 15 - TopView - "POSWIN" - POSITION WINDOW AX = 1023h BX = segment of object handle for parent window within which to position the window (0 = full screen) ES = segment of object handle for window to be positioned DL = bit flags bits 0,1: horizontal position 00 = current 01 = center 10 = left 11 = right bits 2,3: vertical position 00 = current 01 = center 10 = top 11 = bottom bit 4: don't redraw screen if set bits 5-7 not used CH = number of columns to offset from position specified by DL CL = number of rows to offset from position specified by DL Return: nothing --------Q-151024----------------------------- INT 15 - TopView - "GETBUF" - GET VIRTUAL SCREEN INFO AX = 1024h BX = segment of object handle for window (0 = use default) Return: ES:DI -> virtual screen CX = size of virtual screen in bytes DL = 00h text screen 01h graphics screen SeeAlso: INT 10/AH=FEh,INT 21/AH=2Bh/CX=4445h --------Q-151025----------------------------- INT 15 - TopView - "USTACK" - SWITCH BACK TO USER'S STACK AX = 1025h Return: stack switched back Notes: call only after having switched to internal stack with AX=101Ah while TopView requires many API calls to be executed while on the task's private stack, DESQview allows those calls to be executed regardless of the current stack SeeAlso: AX=101Ah --------Q-1510------------------------------- INT 15 - DESQview (TopView???) - UNIMPLEMENTED IN DV 2.x AH = 10h AL = 26h thru 2Ah Return: pops up "Programming error" window in DV 2.x --------Q-15102B----------------------------- INT 15 - DESQview v2.00+ (TopView???) - "POSTTASK" - AWAKEN TASK AX = 102Bh BX = segment of object handle for task Return: nothing Note: forces a task which is waiting on its objectq to continue by placing the handle for the task on the objectq SeeAlso: AX=101Dh,AX=101Eh,INT 21/AH=82h --------Q-15102C----------------------------- INT 15 - DESQview v2.00+ - "NEWPROC" - START NEW APPLICATION IN NEW PROCESS AX = 102Ch ES:DI -> contents of .PIF/.DVP file (see below) BX = size of .PIF/.DVP info Return: BX = segment of object handle for new task 0000h on error SeeAlso: AX=DE24h,INT 21/AH=4Bh Format of .PIF/.DVP file: Offset Size Description 00h BYTE reserved (0) 01h BYTE checksum of bytes 02h through 170h 02h 30 BYTEs blank-padded program title 20h WORD maximum memory to allocate to partition in K 22h WORD minimum memory required in K 24h 64 BYTEs ASCIZ program pathname 64h BYTE default drive letter ('A',...) 65h 64 BYTEs ASCIZ default directory name A5h 64 BYTEs ASCIZ program parameters E5h BYTE initial screen mode (0-7) (see also offset 189h) E6h BYTE number of text pages used E7h BYTE number of first interrupt to save E8h BYTE number of last interrupt to save E9h BYTE rows in virtual screen buffer EAh BYTE columns in virtual screen buffer EBh BYTE initial window position, row ECh BYTE initial window position, column EDh WORD system memory in K EFh 64 BYTEs ASCIZ shared program name 12Fh 64 BYTEs ASCIZ shared program data file 16Fh BYTE flags1 bit 7: writes text directly to screen bit 6: runs in foreground only (see also offset 184h) bit 5: uses math coprocessor bit 4: accesses system keyboard buffer directly bits 3-1: reserved (0) bit 0: swappable 170h BYTE flags2 bit 6: uses command-line parameters in field at A5h bit 5: swaps interrupt vectors ---information unique to .DVP files--- 171h 2 BYTEs keys to use on open menu 173h WORD size of script buffer in bytes 175h WORD automatically give up CPU after this many tests for keyboard input in one clock tick (default 0 = never) 177h BYTE nonzero = "uses own colors" 178h BYTE nonzero if application swappable 179h 3 BYTEs reserved (0) according to Quarterdeck documentation in actual .DVP files, frequently 01h 17Ch BYTE nonzero to automatically close on exit (see also offset 18Bh) 17Dh BYTE nonzero if copy-protect floppy is required ---information unique to DESQview 2.0+--- 17Eh BYTE .DVP version number 00h DESQview v1.2+ 01h DESQview v2.0+ 02h DESQview v2.2+ 17Fh BYTE reserved (0) 180h BYTE initial number of rows in physical window 181h BYTE initial number of columns in physical window 182h WORD maximum expanded memory to allow, in K 184h BYTE flags3 bit 7: automatically assign window position bit 5: maximum memory value has been specified bit 4: disallow "Close" command bit 3: foreground-only when doing graphics set by DV 2.3+ when "Runs in Background" = "D" (undoc) bit 2: don't virtualize (see also offset 18Bh) bit 1: foreground-only during DOS calls set by DV 2.3+ when "Runs in Background" = "D" (undoc) 185h BYTE keyboard conflict level (0-4 for DV<2.26, 00h-0Fh for DV2.26+) bit 3: save/restore entire INT 09 handler state every taskswtch bit 2: take special precautions for programs which read the BIOS keyboard buffer directly from memory bit 1: never indicate keystroke available during scripts/xfers bit 0: only indicate keystroke available every sixth poll 186h BYTE number of graphics pages used 187h WORD extra system memory size 189h BYTE initial screen mode (FFh = default) (overrides offset E5h) ---information unique to DESQview 2.2+--- 18Ah BYTE serial port usage FFh uses all serial ports 00h no serial ports 01h only COM1 02h only COM2 18Bh BYTE flags4 bit 7: automatically close application on exit if .COM or .EXE specified (see also offset 17Ch) bit 6: swappable if not using serial ports bit 5: start program with window hidden (v2.26+) bit 4: start program in background (v2.26+) bit 3: virtualize text (see also offset 184h) bit 2: virtualize graphics (see also offset 184h) bit 1: share CPU when foreground bit 0: share EGA when foreground and zoomed 18Ch BYTE protection level for 386 machines 18Dh 19 BYTEs reserved (0) for regular DESQview ---information unique to DESQview/X 1.0--- 18Dh BYTE X flags bits 3-7: unused (0) bit 2: don't display wait message when opening window bit 1: don't display DOS window bit 0: (XNEWPROC) use DOS client layer (DOS-to-X) (NEWPROC) inherit DOS client layer usage 18Eh BYTE X keyboard behavior (0-3) 18Fh BYTE font scaling 00h fixed fonts 01h scalable fonts 190h 10 BYTEs reserved (0) 19Ah WORD length of data follownig XDVP signature 19Ch 4 BYTEs signature "XDVP" 1A0h N BYTEs list of variable length records (see below) Format of variable length record: Offset Size Description 00h WORD length of following record, 0000h if end of record list 02h BYTE record type 01h script filename, up to 64 characters 02h command-line parameters (allows >64 characters on cmdline) 03h environment inheritance 04h environment string 05h starting window position ---types 01h,02h,04h--- 03h N BYTEs ASCII data ---type 03h--- 03h BYTE inheritance 00h do not inherit 01h inherit environment ---type 05h--- 03h N BYTEs ASCII copy of fields as typed into DVPMAN, separated by commas: starting row, starting column, starting height, starting width Note: if there are multiple occurrences of record types 01h, 02h, or 03h, only the last instance of each type is used; multiple occurrences of type 04h are concatenated --------Q-15102D----------------------------- INT 15 - DESQview v2.00+ - "KMOUSE" - KEYBOARD MOUSE CONTROL AX = 102Dh BL = subfunction 00h determine whether using keyboard mouse Return: BL = 00h using real mouse 01h using keyboard mouse 01h turn keyboard mouse on 02h turn keyboard mouse off --------Q-15102E----------------------------- INT 15 - DESQview v2.40+ - ALLOCATE SYSTEM MEMORY AX = 102Eh BX = number of bytes Return: AX = status 0000h successful ES:DI -> allocated system memory 0001h failed ES:DI = 0000h:0000h Note: under DV 2.42, this call is identical to AX=1001h SeeAlso: AX=1001h,AX=1002h,AX=DE0Ch Format of system memory block header (one paragraph before memory block): Offset Size Description 00h WORD segment of next header or 0000h 02h WORD segment of previous header or 0000h 04h WORD size of block in paragraphs, including header 06h BYTE availability flag (00h in use, 01h free) --------Q-1511------------------------------- INT 15 - TopView commands AH = 11h AL = various (except 17h) Note: in DESQview 2.x, these function calls are identical to AH=DEh, so see those below SeeAlso: AH=DEh --------T-1511------------------------------- INT 15 - VMiX - "sys_system" - EXECUTE SHELL SYSTEM COMMANDS AH = 11h STACK: DWORD pointer to ASCIZ string containing a VMiX shell request (max len = 127) Return: AX = status (SYS_OK or SYS_ERROR) SeeAlso: AH=0Ch"VMiX" --------T-1511------------------------------- INT 15 - MultiDOS Plus - TURN OFF AltZ TOGGLE AH = 11h Note: disables the Alt-Z MultiDOS command/program-selection hotkey SeeAlso: AH=12h"MultiDOS" --------Q-151117BX0000----------------------- INT 15 - DESQview v2.20+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT AX = 1117h BX = 0000h get current mapping context without setting nonzero set new mapping context Return: BX = mapping context in effect before call interrupts enabled Notes: this function differs from AX = DE17h for DESQview v2.20 through 2.25 mapping contexts determine conventional-memory addressability; setting a mapping context ensures that the associated program and data areas are in memory for access. Usable by drivers, TSRs and shared programs. caller need not be running under DESQview, but must ensure that the stack in use will not be mapped out by the call SeeAlso: AX=DE17h,INT 2F/AX=1685h --------m-1511DE----------------------------- INT 15 - DESQview - QEXT.SYS - INSTALLATION CHECK AX = 11DEh Return: CF clear if installed AX = segment at which QEXT.SYS is located Desc: QEXT.SYS is Quarterdeck's HMA manager for DESQview; more recent versions also implement the XMS standard Note: a private entry point may be found by searching the beginning of the returned segment for the signature string "QUARTERDECK EXTENDED MEMORY MANAGER 286"; the word immediately prior to the signature contains the QEXT version number in BCD, and the word prior to that contains the offset within the QEXT code segment of the private entry point SeeAlso: INT 2F/AX=4310h,INT 67/AH=3Fh Call private entry point with: AH = 00h ??? AH = nonzero ??? --------T-1512------------------------------- INT 15 - VMiX - "sys_sleep" - PUT PROCESS TO SLEEP AH = 12h STACK: WORD process ID Return: AX = status (SYS_OK or SYS_ERROR) SeeAlso: AH=03h"MultiDOS",AX=101Dh,AH=13h"VMiX" --------T-1512------------------------------- INT 15 - MultiDOS Plus - TURN ON AltZ TOGGLE AH = 12h Note: enables the Alt-Z MultiDOS command/program-selection hotkey SeeAlso: AH=11h"MultiDOS" --------Q-1512--BH00------------------------- INT 15 - TopView - SEND MESSAGE - "HANDLE" - RETURN OBJECT HANDLE AH = 12h BH = 00h BL = which handle to return 00h handle in DWORD on top of stack 01h current task's window handle 02h given task's mailbox handle (task's handle on stack) 03h current task's mailbox handle 04h given task's keyboard handle (task's handle on stack) 05h current task's keyboard object handle 06h given task's OBJECTQ handle (task's handle on stack) 07h current task's OBJECTQ handle 08h \ thru > return 0000:0000 under DV < 2.26 10h / 0Ch (2.26+) task owning object with handle in DWORD on top of stack 0Dh (2.26+) task handle of owner (parent) of current task Return: DWORD on top of stack is object handle Note: BL=0Ch,0Dh returns 00000000h if the object is not open (keyboard, mailbox, panel, pointer, and timer objects) or is an orphan (task, window) SeeAlso: AH=12h/BH=02h,AH=12h/BH=80h --------Q-1512--BH01------------------------- INT 15 - TopView - SEND MESSAGE - "NEW" - CREATE NEW OBJECT AH = 12h BH = 01h BL = object type to create 00h (DV 2.0x only) handle is DWORD on top of stack 01h (DV 2.0x only) use task's window handle 02h (DV 2.0x only) given task's mailbox (task's handle on stack) 03h (DV 2.0x only) current task's mailbox 04h (DV 2.0x only) given task's keyboard (task's handle on stack) 05h (DV 2.0x only) current task's keyboard object 08h WINDOW class 09h MAILBOX class 0Ah KEYBOARD class 0Bh TIMER object (counts down 32-bit time in 10ms increments) 0Fh POINTER object 10h PANEL object STACK: (if window object or WINDOW class) DWORD address to jump to (no new task if high word == 0) DWORD (reserved) 0 = non-task window, FFFFh = task window DWORD bytes for task's private stack (FFFFh == default of 0100h) DWORD bytes system memory for input buffer for READ/READN (0 == none, -1 == default--same as logical window size) DWORD window size, columns DWORD window size, rows DWORD length of window title DWORD address of window title Return: DWORD on top of stack is new object handle Notes: if a new task is created, it is started with AX = BX = SI = DI = BP = 0 DX:CX = handle of parent task DS = ES = SS = segment of private stack (and new task's handle) new windows are orphans, inherit the colors/hidden status of the creating task's window, and are placed in the upper left hand corner of the screen but not automatically redrawn new keyboards are closed, and have all object bits cleared except for the hardware cursor bit SeeAlso: AH=12h/BH=02h,AH=12h/BH=81h --------Q-1512--BH02------------------------- INT 15 - TopView - SEND MESSAGE - "FREE" - FREE AN OBJECT AH = 12h BH = 02h BL = object 00h handle in DWORD on top of stack window: close window and free timer: free timer panel: free panel object pointer: free pointer 01h task's window handle - kills task, never returns 02h given task's mailbox (task's handle on top of stack) 03h current task's mailbox 04h given task's keyboard (task's handle on top of stack) 05h current task's keyboard object Notes: when a window is freed, its keyboard and pointer objects are freed; task windows also free any mailbox, objectq, and panel objects held by the task and any child tasks if the keyboard being freed is the default keyboard for a task, this call is equivalent to CLOSE panel and pointer objects are automatically closed if open SeeAlso: AH=12h/BH=01h,AH=12h/BH=0Dh,AH=12h/BH=82h --------Q-1512--BH03------------------------- INT 15 - TopView - SEND MESSAGE - "ADDR" - GET HANDLE OF MESSAGE SENDER AH = 12h BH = 03h BL = object 00h mailbox handle in DWORD on top of stack 02h sender of last msg read from mailbox (task's handle on stack) 03h sender of last msg read from current task's mailbox Return: DWORD on stack is task handle of message sender SeeAlso: AH=12h/BH=00h,AH=12h/BH=83h --------Q-1512--BH03------------------------- INT 15 - DESQview v2.26+ - "CONNECT" - CONNECT TWO WINDOWS AH = 12h BH = 03h BL = window to be connected 00h handle of window to be attached in DWORD on top of stack 01h attach current task's main window STACK: DWORD handle of window to attach to or 00000000h to detach Return: STACK popped Notes: when two windows are connected, both will move if the user moves either multiple windows may be attached to a single window, but each window may only be attached to one window at a time SeeAlso: AH=12h/BH=83h --------Q-1512--BX0300----------------------- INT 15 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY AH = 12h BX = 0300h STACK: DWORD handle of panel object Return: STACK: DWORD length of directory (always multiple of 14 bytes) DWORD address of directory Note: a null string is returned if the object is not open SeeAlso: AH=12h/BX=0400h"APPLY",AH=12h/BH=83h Format of panel file: Offset Size Description 00h 2 BYTEs C0h C3h 02h BYTE number of panels in file 03h for each panel in file: 8 BYTEs blank-padded panel name DWORD panel offset in file WORD panel length data for panels (each consists of one or more window/query/manager streams) first byte of each panel must be 1Bh, fifth byte must be E5h --------Q-1512--BH04------------------------- INT 15 - TopView - SEND MESSAGE - "READ" - READ NEXT LOGICAL LINE OF WINDOW AH = 12h BH = 04h BL = window to read from 00h handle is DWORD on top of stack 01h use calling task's default window 0Ch (DV 2.26+) default window of task owning handle on top of stack 0Dh (DV 2.26+) default window of parent task of current task Return: STACK: DWORD number of bytes read DWORD address of buffer Notes: reading starts at the current logical cursor position; the cursor is updated to point at the character following the last one read any translucent blanks (FFh) which are visible on screen are changed to the character which is seen through them the string produced by the read is placed in an input buffer which may be reused by the next READ or READN of a window window stream opcodes D8h and D9h determine whether the read returns characters or attributes SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=12h,AH=12h/BH=84h --------Q-1512--BH04------------------------- INT 15 - TopView - SEND MESSAGE - "READ" - GET NEXT RECORD FROM OBJECT AH = 12h BH = 04h BL = object 00h handle is DWORD on top of stack mailbox: wait for and get next message keyboard: wait for and get pointer to next input buffer pointer: wait for and get next message 02h get next message from mailbox (task's handle on top of stack) 03h get next message from current task's mailbox 04h get the next input from keyboard (handle on top of stack) 05h get the next input from task's default keyboard 06h wait for input from any object in OBJECTQ (handle on stack) 07h wait for input from any object in task's default OBJECTQ Return: STACK: (if objectq) DWORD handle of object with input (otherwise) DWORD number of bytes DWORD address Notes: for a keyboard in keystroke mode, the input buffer is a single byte containing the character code as returned by the BIOS; the BIOS scan code is available via the STATUS call if the character is zero for a keyboard in field mode, the input buffer format is determined by the field table header for the window the keyboard is attached to keyboard input buffers and mailbox message buffers may be invalidated by the next READ, ERASE, CLOSE, or FREE message to the same object SeeAlso: AH=12h/BH=05h"OBJECT",AH=12h/BH=84h Format of pointer message: Offset Size Description 00h WORD row 02h WORD column 04h BYTE status bit 7: set when press/release mode active and button pressed bit 6: set when press/release mode active and button released bits 7-2: number of clicks-1 if multiple-click mode active bits 1,0: button pressed (00=none,01=button1,10=button2) 05h BYTE field number or zero (APILEVEL >= 2.00 only) --------Q-1512--BX0400----------------------- INT 15 - TopView - SEND MESSAGE - "READ" - WAIT FOR TIMER TO EXPIRE AH = 12h BX = 0400h STACK: DWORD timer's handle Return: after timer expires STACK: DWORD time in 1/100 sec after midnight when timer expired SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=84h --------Q-1512--BX0400----------------------- INT 15 - TopView - SEND MESSAGE - "APPLY" - WRITE PANEL TO WINDOW AH = 12h BX = 0400h STACK: DWORD handle of panel object DWORD window's handle (or 0 for current task's window) DWORD length of panel name DWORD pointer to panel name Return: STACK: DWORD handle of window which was used DWORD handle of keyboard or 0 Notes: status of APPLY may be checked with STATUS message panel MUST have the following format first byte must be 1Bh (i.e. must start with a stream) first opcode in stream must be E5h single byte arg of opcode is interpreted thus: bits 7,6 11 means create new window 10 means create new field table for existing window 01 means use existing window and field table bit 5 if set, panel contains a field table (creates a new keyboard and puts it in field mode) bit 4 if set, panel contains input fields bit 3 if set, panel contains select fields but no input fields if the panel contains input or select fields, a keyboard handle is returned; either the window's current open keyboard or a newly-created keyboard object. The caller should read that keyboard to obtain input from the panel. SeeAlso: AH=12h/BH=84h --------Q-1512--BH05------------------------ INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE TO OBJECT AH = 12h BH = 05h BL = object 00h handle is DWORD on top of stack timer: start timer to end at a specified time keyboard: add input buffer to queue pointer: move pointer icon to specified position 02h send message by value/status=0 to mbox (task's handle on stack) 03h send message by value/status=0 to current task's mailbox 04h add input buffer to KEYBOARD queue (handle on top of stack) 05h add input buffer to task's default KEYBOARD queue 06h add an object to OBJECTQ (handle on top of stack) 07h add an object to task's default OBJECTQ STACK: (if mailbox) DWORD length DWORD address (if keyboard) DWORD status (scan code in keystroke mode) DWORD length (should be 1 in keystroke mode) DWORD address (if objectq) DWORD handle of object to add (if timer) DWORD 1/100ths seconds since midnight (actually only accurate to 1/18 sec) (if pointer) DWORD column relative to origin of window DWORD row relative to origin of window Notes: under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h) the data and status written to a keyboard object must match the format returned by the keyboard object in the current mode the pointer position is scaled according to the current scaling factors SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h --------Q-1512--BH05------------------------- INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE STRING TO WINDOW AH = 12h BH = 05h BL = window to write to 00h DWORD on top of stack is window handle 01h write string to task's default window 0Ch (DV 2.26+) default window of task owning handle on top of stack 0Dh (DV 2.26+) default window of parent of current task STACK: DWORD object handle if handle passed on stack DWORD total length of string (high word == 0) DWORD address of string to display Return: indicated actions performed a. non-control characters are displayed (opcodes DEh and DFh control whether the attributes are left or changed to the current attrib) b. CR/LF/BS/Tab cause the usual cursor movement c. ESC starts a data structure with additional commands if following byte is less than 20h; otherwise, it is written to the window STACK: DWORD handle of new window if window stream opcode E6h else nothing SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h Data Structure: MAGIC DB 1Bh MODE DB ? ; 00h, 01h, 10h, 14h-1Fh legal LENGTH DW ? ; length of remainder in bytes var-length fields follow, each an OPCODE followed by zero or more args MODE 00h (set or display values) "WINDOW STREAM" Opcodes:args 00h display 20h blanks with the default attribute 01h-1Fh display OPCODE blanks with the default attribute 20h display char with default attribute 20h times BYTE char to repeat 21h-3Fh display char with default attribute OPCODE-20h times BYTE char to repeat 40h display 20h blanks with specified attribute BYTE attribute of blanks 41h-5Fh display OPCODE-40h blanks with specified attribute BYTE attribute of blanks 60h display next 20h characters 20h BYTEs characters to display 61h-7Fh display next OPCODE-60h characters N BYTEs characters to display 80h-87h display N blanks with default attribute BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE) [000h means 800h] 88h-8Fh display N copies of the character BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE) [000h means 800h] BYTE character to repeat 90h-97h display N blanks with specified attribute BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE) [000h means 800h] BYTE attribute 98h-9FH display string at logical cursor pos BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE) [000h means 800h] N BYTEs string to display A0h set logical cursor row BYTE row number (0 is top) A1h set logical cursor column BYTE column number (0 is leftmost) A2h set top edge of scrolling region BYTE row A3h set left edge of scrolling region BYTE column A4h set row of physical window position BYTE line A5h set column of physical window position BYTE column A6h set height of physical window BYTE #rows A7h set width of physical window BYTE #columns A8h set viewport row BYTE row A9h set viewport column BYTE column AAh set virtual screen height [contents of window unpredictable after] BYTE rows ABh set virtual screen width [contents of window unpredictable after] BYTE columns ACh-AEh unused AFh set compatible/preferred video modes BYTE compatibility/preference mask bit 7 compatible with monochrome bit 6 compatible with color text, EGA/VGA graphics bit 5 compatible with medium-resolution CGA graphics bit 4 compatible with high-resolution CGA graphics bit 3 prefer monochrome bit 2 prefer color text, EGA/VGA graphics bit 1 prefer medium-resolution CGA graphics bit 0 prefer high-resolution CGA graphics B0h move logical cursor down BYTE #rows (signed, negative values move up) [if #rows=0 and hardware cursor owner, update hw crsr] B1h move logical cursor right BYTE #cols (signed, negative values move left) [if #cols=0 and hardware cursor owner, update hw crsr] B2h shift top edge of scrolling region BYTE #rows (signed) B3h shift left edge of scrolling region BYTE #cols (signed) B4h shift physical window down BYTE #lines (signed) B5h shift physical window right BYTE #columns (signed) B6h expand physical window vertically BYTE #lines (signed) B7h expand physical window horizontally BYTE #columns (signed) B8h adjust viewport row BYTE #rows (signed) B9h adjust viewport column BYTE #columns (signed) BAh adjust virtual screen height [contents of window unpredict after] BYTE #rows to increase (signed) BBh adjust virtual screen width [contents of window unpredictbl after] BYTE #cols to increase (signed) BCh-BFh reserved (currently unused) C0h set logical cursor position BYTE row number (0 is top border) BYTE column number (0 is left border) C1h set top left corner of scrolling region BYTE row BYTE column C2h set physical window pos BYTE upper left row (no top border if 0) BYTE upper left column (no left border if 0) C3h set current window size BYTE #rows BYTE #cols C4h set upper left corner of viewport (portion of virtual screen displayed in window) BYTE row BYTE column C5h set size of virtual screen [contents unpredictable afterwards] BYTE #rows BYTE #cols C6h unused C7h unused C8h set logical cursor relative to current position BYTE number of rows to move down (signed) BYTE number of columns to move right (signed) [if #rows=#cols=0 and hardware cursor owner, update hw cursr] C9h shift top left corner of scrolling region BYTE #rows (signed) BYTE #cols (signed) CAh set window pos relative to current position BYTE number of rows to shift down (signed) BYTE number of columns to shift right (signed) CBh set window size relative to current size BYTE number of rows to expand (signed) BYTE number of cols to expand (signed) CCh shift viewport relative to current position BYTE rows to shift (signed) BYTE cols to shift (signed) CDh resize virtual screen BYTE #rows to expand (signed) BYTE #cols to expand (signed) CEh scroll text when using E8h-EBh/F8h-FBh opcodes (default) CFh scroll attributes when using E8h-EBh/F8h-FBh opcodes D0h allow window frame to extend beyond screen D1h always display a complete frame, even if window extends beyond edge of screen D2h allow DV to change logical colors on video mode switch (default) D3h application changes logical attributes D4h window is visible [must redraw to actually make visible] D5h window is hidden [must redraw to actually remove] D6h window has frame (default) D7h window unframed [must redraw to actually remove frame] D8h READ/READN will read characters from window (default) D9h READ/READN will read attributes from window DAh use logical attributes, which may be remapped attributes 1 normal text 2 highlighted normal text 3 help text 4 highlighted help text 5 error message 6 highlighted error message 7 emphasized text 8 marked text 9-16 are reverse video versions of 1-8 DBh use physical attributes for characters DCh enable special actions for control characters (default) DDh disable special control char handling, all chars displayable by BIOS TTY call DEh write both character and attribute (default) DFh write character only, leave attribute untouched E0h repeat following commands through E1h opcode BYTE number of times to repeat (00h means 256 times) E1h end of commands to repeat, start repeating them E2h set current output color BYTE color E3h clear virtual screen from scroll origin to end using current color E4h redraw window E5h select menu style BYTE style (normally 18h) bits 5,4 = 01 use two-letter menu entries for remainder of this stream E5h (panel file only) BYTE modifier bits 7,6 = 11 panel stream creates new window = 10 panel defines new field table for existing window = 01 panel stream uses existing window & field table bit 5 = 1 stream contains a field table (create kyboard object) bit 4 = 1 stream defines input fields (create keyboard object) bit 3 = 1 stream defines select fields but not input fields bit 2 = 1 stream defines exclusive input window (DV 2.2) bit 1 reserved bit 0 reserved E6h create new window and perform rest of manipulations in new window BYTE number of rows BYTE number of columns Return: DWORD object handle of new window returned on stack at end Note: the window is created with a physical size of 0x0 at the same position as the window to which this stream was sent E7h no operation E8h scroll area up (top left corner defined by opcode C1h) BYTE height BYTE width E9h scroll area down (top left corner defined by opcode C1h) BYTE height BYTE width EAh scroll area left (top left corner defined by opcode C1h) BYTE height BYTE width EBh scroll area right (top left corner defined by opcode C1h) BYTE height BYTE width ECh set logical attributes for window contents BYTE video modes command applies to bit 7 monochrome bit 6 color text, EGA/VGA graphics bit 5 medium-resolution CGA graphics bit 4 high-resolution CGA graphics BYTE which attributes to set bit 7 if set, copy single following byte to indicated attribs bits 4-6 # of first attribute to change - 1 bits 0-3 # of consecutive attributes to change N BYTEs new attributes EDh set logical attributes for window frame BYTE video modes command applies to (see opcode ECh) BYTE which attributes to set bit 7 if set, copy single following byte to indicated attrs bits 4-6 # of first attribute to change - 1 bits 0-3 # of consecutive attributes to change N BYTEs new attributes attributes 1 = top left corner 2 = top right corner 3 = bottom left corner 4 = bottom right corner 5 = top edge 6 = bottom edge 7 = left edge 8 = right edge EEh set characters for window frame BYTE video modes command applies to (see opcode ECh) BYTE which characters to set bit 7 if set, copy single following byte to indicated chars bits 4-6 # of first char to change - 1 bits 0-3 # of consecutive chars to change N BYTEs new chars (same relative position as attributes above) EFh set window name BYTE length of name (should be in range 0 to logical screen width) N BYTEs name F0h clear input field to blanks BYTE field number F1h fill input field with character BYTE field number BYTE char F2h set color of input field BYTE field number (1-N) BYTE attribute F3h set initial contents of input field BYTE field number (1-N) N BYTEs enough chars to exactly fill field as defined by op FFh F4h position cursor to start of specific input field BYTE field number (1-N) F5h change field table entry BYTE field number 7-8 BYTEs field table entry (see opcode FFh below) F6h set field type BYTE field number BYTE type 00h inactive 40h output field 80h input field C0h deselected field C2h selected field F7h "broadcast write" write data to fields with program output bit set in field table entry, in field number order N BYTEs (total length of all program output fields) F8h scroll field up a line BYTE field number F9h scroll field down a line BYTE field number FAh scroll field left BYTE field number FBh scroll field right BYTE field number FCh set field table header BYTE number of fields (must be <= existing number of fields) BYTE screen behavior bits bit 7 reserved bit 6 set if menu items may be selected via keyboard bit 5 set if left mouse button in "status" mode (press anywhere in window immediately returns control to app) bit 4 set if right mouse button in "status" mode bit 3 if set, select fields return contents or blanks rather than 'Y' or 'N' bit 2 if set, modified bits reset on return to application bits 0,1 = 00 no data returned on read of keyboard 01 data returned as array of chars containing all fields packed together, with no field numbers 10 data returned as numbered variable-length records for all fields 11 data returned as numbered variable-length records for the fields which were modified BYTE current input field (updated by DESQview) BYTE current select field (updated by DESQview) BYTE attribute for select fields when they are pointed at BYTE attribute for select fields which have been selected FDh reset modified bit for all fields FEh reset selected and modified bits for all fields FFh set up input fields 6 BYTEs table header (see opcode FCh above) the field table entries, one for each field BYTE start row \ BYTE start column \ if menu selection and start is to BYTE end row / right or below end, select from kbd only BYTE end column / BYTE field type bits 7,6 = 00 inactive (non-entry) field 01 echos keystrokes input to make menu selection 10 fill-in field 11 select field bit 5 field can be filled by broadcast write (F7h opcode) bit 4 reserved bit 3 reserved bit 2 reserved bit 1 set if field selected bit 0 set if field modified BYTE modifier if type is fill-in, then bit flags to determine behavior bit 7 if set, automatically enter CR when field full bit 6 move to next field when current field is full bit 5 if set, enter text from right end (for numbers) bit 4 if set, force input to uppercase bit 3 if set, clear old contents on first keystroke bit 2 if set, input returned when cursor moves out of modified field ("validate",API level 2.02+) bit 1 reserved bit 0 reserved if select field, first key to press to activate 00h if have to point-&-click or is an extended-ASCII keystroke (only if two-key menus enabled) BYTE (select field only) normal color of field BYTE second key for select field. This byte is present iff two-letter menu entries selected with opcode E5h, and in that case is present regardless of field type Note: DESQview uses and updates the actual copy of the information which is contained in the stream. Thus this info must remain intact until after the data entry is complete. MODE 01h "QUERY STREAM" (valid only for those opcodes listed here) A0h return logical cursor row in next byte A1h return logical cursor column in next byte A2h return top row of scrolling region in next byte A3h return left column of scrolling region in next byte A4h return row of physical window origin in next byte A5h return column of physical window origin in next byte A6h return height of physcial window in next byte A7h return width of physical window in next byte A8h return row of viewport origin in next byte A9h return column of viewport origin in next byte AAh return height of virtual screen in next byte ABh return width of virtual screen in next byte AFh return current video mode in next byte C0h return current logical cursor position in next two bytes C1h return top left corner of scrolling region in next two bytes C2h return current window position in next two bytes C3h return current window size in next two bytes C4h return current viewport origin in next two bytes C5h return current virtual screen size in next two bytes D0h \ overwritten with D0h if frames may fall off screen edge D1h / D1h if frames always displayed entirely D2h \ overwritten with D2h if DESQview controls color palette D3h / D3h if application changes color palette D4h \ overwritten with D4h if window visible D5h / D5h if window hidden D6h \ overwritten with D6h if window has frame D7h / D7h if window unframed D8h \ overwritten with D8h if reading characters from window D9h / D9h if reading attributes from window DAh \ overwritten with DAh if using logical attributes DBh / DBh if using physical attributes DCh \ overwritten with DCh if TTY control char interpretation on DDh / DDh if TTY control char interpretation off DEh \ overwritten with DEh if writing both characters and attributes DFh / DFh if leaving attributes untouched E2h return current color in next byte ECh get logical attributes for window contents BYTE execute call if currently in specified video mode bit 7 monochrome bit 6 color text, EGA/VGA graphics bit 5 medium-resolution CGA graphics bit 4 high-resolution CGA graphics BYTE which attributes to get bit 7 unused??? bits 4-6 first attribute to get - 1 bits 0-3 # consecutive attributes N BYTEs buffer to hold attributes EDh get logical attributes for window frame BYTE execute call if currently in video mode (see opcode ECh) BYTE which attributes to get bit 7 unused??? bits 4-6 first attribute to get - 1 bits 0-3 # consecutive attributes N BYTEs buffer to hold attributes EEh get characters for window frame BYTE execute call if currently in video mode (see opcode ECh) BYTE which attributes to get bit 7 unused??? bits 4-6 first char to get - 1 bits 0-3 # consecutive chars N BYTEs buffer to hold chars EFh return first N characters of current window name BYTE max length of returned name N BYTEs buffer to hold window name F3h return contents of specified field BYTE field number N BYTEs buffer to hold field contents (size exactly equal to field size) F5h get field table entry BYTE field number 7-8 BYTEs buffer to hold field table entry Notes: DV < 2.26 always returns 7 bytes DV 2.26+ w/ APILEVEL < 2.26 returns 8 bytes iff field table is using 8-byte entries and eighth byte after F5h is E7h (NOP); otherwise, 7 bytes are returned DV 2.26+ w/ APILEVEL > 2.26 returns 7 or 8 bytes depending on the field table entry size F6h get type of a field BYTE field number BYTE type FCh get field table header 6 BYTEs buffer to store header MODE 10h "MANAGER STREAM" (valid only for opcodes listed here) 00h allow window to be moved horizontally 01h allow window to be moved vertically 02h allow window to change width 03h allow window to change height 04h allow window to be scrolled horizontally 05h allow window to be scrolled vertically 06h allow "Close Window" menu selection for application 07h allow "Hide Window" menu selection for application 08h allow application to be suspended ("Rearrange/Freeze") 0Eh allow "Scissors" menu 10h allow DESQview main menu to be popped up 11h allow "Switch Windows" menu 12h allow "Open Window" menu 13h allow "Quit" menu selection 20h-33h opposite of 00h-13h, disallow specified action 40h notify if horizontal position of window changes 41h notify if vertical position of window changes 42h notify if width of window changes 43h notify if height of window changes 44h notify if window scrolled horizontally 45h notify if window scrolled vertically 46h notify if window is closed--program has to clean up and exit itself 47h notify if window is hidden 48h notify if "?" on main menu selected 49h notify if pointer message sent to window 4Ah notify if window is placed in foreground 4Bh notify if window is placed in background 4Ch notify if video mode changes 4Dh notify if "Scissors" menu "Cut" option selected 4Eh notify if "Scissors" menu "Copy" option selected 4Fh notify if "Scissors" menu "Paste" option selected 50h notify if DESQview main menu about to pop up 51h notify if DESQview main menu popped down 60h-71h opposite of 40h-51h: don't notify on specified event 84h attach window to parent task's window (both move together) 85h detach window from parent task's window (may move independently) 86h disable background operation for application 87h enable running in background 88h set minimum size of physical window BYTE rows BYTE columns 89h set maximum size of physical window BYTE rows BYTE cols 8Ah set primary asynchronous notification routine DWORD address of routine, 0000h:0000h means none (see also below) 8Bh set async notification parameter DWORD 32-bit value passed to 8Ah async routine in DS:SI ACh (DV2.2+) perform regular select field attribute processing ADh (DV2.2+) protect attributes in selected field from being lost AEh make window default notify window for owning app (API level 2.00+) AFh set selected field marker character BYTE character to display at left edge of selected fields BCh set standard field processing mode BDh set alternate field processing mode (enables cursor pad for menus) BEh disables changing reverse logical attributes with ECh opcode BFh enables changing reverse logical attributes with ECh opcode C0h make current window topmost in system C1h force current process into foreground C2h make current window topmost in process C3h position mouse pointer relative to origin of current field BYTE rows below upper left corner of field BYTE columns to right of upper left corner of field C4h position mouse pointer relative to origin of given field BYTE field number BYTE rows below upper left corner of field BYTE columns to right of upper left corner of field C5h orphan current window (also hides it) Note: must be last in stream; all subsequent commands ignored C6h show all windows for this process C7h hide all windows for this process C8h suspend process and hide all its windows C9h force current process into background CAh make current window bottom-most in process CBh cancel current window manager operation, remove DV menu, give control to topmost application CCh orphan window and give it to the system for use as paste data CEh reorder windows DWORD pointer to null-terminated list of words each word is segment of object handle for a window FFh no operation MODES 14h to 1Fh "USER STREAMS" normally NOPs, but may be defined by SETESC message to invoke FAR routines, one for each mode number on entry to handler, DS:SI -> first byte of actual stream (not header) CX = #bytes in stream ES:DI = window's handle Asynchronous notification routine defined by manager stream 8Ah called with: ES:DI = handle of window DS:SI is 32-bit value set by 8Bh manager stream opcode mailbox contains message indicating event Opcode 40h horizontal movement DWORD object handle of window BYTE new row BYTE new col 41h vertical movement DWORD object handle of window BYTE new row BYTE new col 42h horizontal size change DWORD object handle of window BYTE new rows BYTE new cols 43h vertical size change DWORD object handle of window BYTE new rows BYTE new cols 44h scrolled horizontally DWORD object handle of window BYTE mouse row within window BYTE mouse column within window BYTE field mouse is on, 0 if none BYTE amount moved: >0 right, <0 left, 0 done 45h scrolled vertically DWORD object hande of window BYTE mouse row within window BYTE mouse column within window BYTE field mouse is on, 0 if none BYTE amount moved: >0 down, <0 up, 0 done 46h window close request DWORD object handle of window BYTE mouse pointer row BYTE mouse pointer column BYTE field mouse is on, 0 if none 47h application's windows hidden 48h Help for Program selected DWORD object handle of window BYTE mouse pointer row BYTE mouse pointer column BYTE field mouse is on, 0 if none 49h pointer message sent to window DWORD pointer handle which received message 4Ah switched to window from another ("raise") 4Bh switched away from the window ("lower") 4Ch video mode changed BYTE new BIOS video mode 4Dh Scissors/cUt selected DWORD object handle of window BYTE row of upper left corner BYTE column of upper left corner BYTE field number ul corner is in, 0=none DWORD handle of orphaned window created with copy of data from specified region BYTE height of region BYTE width of region 4Eh Scissors/Copy selected DWORD object handle of window BYTE row of upper left corner BYTE column of upper left corner BYTE field number ul corner is in, 0=none DWORD handle of orphaned window created with copy of data from specified region BYTE height of region BYTE width of region 4Fh Scissors/Paste selected DWORD object handle of window BYTE row of upper left corner BYTE column of upper left corner BYTE field number ul corner is in, 0=none DWORD handle of orphaned window with data BYTE height of region BYTE width of region Note: orphaned data window should be adopted or freed when done 50h main menu about to pop up 51h main menu popped down Return: all registers unchanged --------Q-1512--BH06------------------------- INT 15 - DESQview 2.20+ - SEND MESSAGE - "SETPRI" - SET PRIORITY WITHIN OBJECTQ AH = 12h BH = 06h BL = object 00h object handle in DWORD on top of stack mailbox, keyboard, pointer, or timer (DV 2.50+) window 01h (DV 2.50+) current task's window 04h given task's keyboard (task's handle on top of stack) 05h current task's default keyboard STACK: DWORD new priority of object in task's OBJECTQ (new priority of task if window handle) Notes: initially all objects have the same default value. Should only make relative adjustments to this default value. when changing priorities, all objects already on the objectq are reordered for window handles, only the non-blocked task(s) with the highest priority receive CPU time under DESQview 2.50-2.52; the default priority is 0Ah SeeAlso: AH=12h/BH=07h,AH=12h/BH=87h --------Q-1512--BH07------------------------- INT 15 - DESQview 2.20+ - SEND MESSAGE - "GETPRI" - GET PRIORITY WITHIN OBJECTQ AH = 12h BH = 07h BL = object 00h object handle in DWORD on top of stack mailbox, keyboard, pointer, or timer (DV 2.50+) window 01h (DV 2.50+) current task's window 04h given task's keyboard (task's handle on top of stack) 05h current task's default keyboard Return: STACK: DWORD object priority Note: initially all objects have the same default value. Should only make relative adjustments to this default value. SeeAlso: AH=12h/BH=06h --------Q-1512--BH08------------------------- INT 15 - TopView - SEND MESSAGE - "SIZEOF" - GET OBJECT SIZE AH = 12h BH = 08h BL = object 00h handle in DWORD on top of stack window: total character positions in window timer: elapsed time since timer started pointer: number of messages queued to pointer object panel: number of panels in panel file keyboard: number of input buffers queued 01h total chars in current task's default window 02h number of messages in task's mailbox (task's handle on stack) 03h number of messages in current task's mailbox 04h number of input buffers queued in task's kbd (handle on stack) 05h number of input buffers queued for current task's default kbd 06h number of objects queued in OBJECTQ (task's handle on stack) 07h number of objects queued in current task's OBJECTQ 0Ch (DV 2.26+) total chars in window owning handle on top of stack 0Dh (DV 2.26+) total chars in parent task's window Return: DWORD on top of stack is result Note: for panel objects, a count of zero is returned if no panel file is open for the object SeeAlso: AH=12h/BH=04h,AH=12h/BH=09h --------Q-1512--BH09------------------------- INT 15 - TopView - SEND MESSAGE - "LEN" - GET OBJECT LENGTH AH = 12h BH = 09h BL = object 00h handle in DWORD on top of stack window: get chars/line timer: get 1/100 seconds remaining before timer expires mailbox: (DV/X) get number of bytes queued to mailbox 01h get number of chars/line in current task's default window 0Ch (DV 2.26+) get chars/line in window owning handle on top of stk 0Dh (DV 2.26+) get chars/line in parent task's window Return: DWORD on top of stack is length SeeAlso: AH=12h/BH=08h --------Q-1512--BH0A------------------------- INT 15 - TopView - SEND MESSAGE - "ADDTO" - WRITE CHARS AND ATTRIBS TO WINDOW AH = 12h BH = 0Ah BL = window to write to 00h window handle is DWORD on top of stack 01h current task's default window 0Ch (DV 2.26+) default window of task owning handle on top of stack 0Dh (DV 2.26+) default window of parent of current task STACK: DWORD count of attributes DWORD address of attribute string DWORD count of characters DWORD address of character string Notes: if one string is longer than the other, the shorter one will be reused until the longer one is exhausted the cursor is left just after the last character written SeeAlso: AH=12h/BH=0Bh"WINDOW" --------Q-1512--BH0A------------------------- INT 15 - TopView - SEND MESSAGE - "ADDTO" - SEND MAILBOX MESSAGE/STAT BY VALUE AH = 12h BH = 0Ah BL = mailbox to write to 00h handle is DWORD on top of stack 02h default mailbox of task whose handle is on top of stack 03h current task's default mailbox STACK: DWORD status (low byte) DWORD length of message DWORD address of message Notes: the message is copied into either system or common memory insufficient memory normally causes the process to be aborted; under DESQview 2.2+, failed writes may return CF set instead (see AX=DE15h) SeeAlso: AH=12h/BH=0Bh"MAILBOX" --------Q-1512--BH0A------------------------- INT 15 - TopView - SEND MESSAGE - "ADDTO" - SET OBJECT BITS AH = 12h BH = 0Ah BL = object 00h handle is DWORD on top of stack timer: start timer for specified interval pointer: set control flags keyboard: set control flags 04h set control flags on KEYBOARD object (handle on top of stack) 05h set control flags on task's default KEYBOARD object STACK: (if timer) DWORD duration in 1/100 seconds (otherwise) DWORD bits to set SeeAlso: AH=12h/BH=0Bh"OBJECT" For keyboard objects, the bits have the following significance: bit 15 reserved, can't be set bit 14 unused bit 13 reserved, can't be set bit 12-6 unused bit 5 (DV 2.2+) exclusive input bit 4 filter all keys (used with handler established by SETESC) if 0, only keys that would normally be displayed are filtered bit 3 program continues executing while input in progress bit 2 insert mode active for field mode bit 1 hardware cursor displayed when task is hardware cursor owner must be set if keyboard in field mode and field table includes input fields bit 0 keyboard is in field mode rather than keystroke mode For pointer objects, the bits have the following significance: bit 15 reserved, can't be set bit 14-8 unused bit 7 mouse pointer is hidden while in window bit 6 get messages even if window not topmost bit 5 get messages even if window not foreground bit 4 multiple clicks separated by less than 1/3 second are counted and returned in a single message bit 3 pointer position is relative to screen origin, not window origin bit 2 send message on button release as well as button press bit 1 (DV 2.23+) send message with row=FFFFh and col=FFFFh whenever pointer leaves the window bit 0 send message only on button activity, not movement DV-specific, and INT 15/AX=DE0Fh must have been called first --------Q-1512--BH0B------------------------- INT 15 - TopView - SEND MESSAGE - "SUBFROM" - WRITE ATTRIBUTES TO WINDOW AH = 12h BH = 0Bh BL = window to write attributes to 00h handle is DWORD on top of stack 01h current task's default window 0Ch (DV 2.26+) default window of task owning handle on top of stack 0Dh (DV 2.26+) default window of parent of current task STACK: DWORD number of attributes to write DWORD address of attributes Note: the attributes are written starting at the current cursor position; the cursor is left just after the last position written SeeAlso: AH=12h/BH=0Ah"WINDOW" --------Q-1512--BH0B------------------------- INT 15 - TopView - SEND MESSAGE - "SUBFROM" - SEND MAILBOX MESSAGE/STAT BY REF AH = 12h BH = 0Bh BL = mailbox to write to 00h handle is DWORD on top of stack 02h default mailbox of task whose handle is on top of stack 03h current task's default mailbox STACK: DWORD status (low byte) DWORD length of message DWORD address of message Notes: only a pointer to the message is stored, but the write may still fail due to insufficient memory under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h) SeeAlso: AH=12h/BH=0Ah"MAILBOX" --------Q-1512--BH0B------------------------- INT 15 - TopView - SEND MESSAGE - "SUBFROM" - REMOVE OBJECT FROM OBJECTQ AH = 12h BH = 0Bh BL = OBJECTQ from which to remove all copies of a particular object 06h OBJECTQ of task whose handle is on top of stack 07h task's default OBJECTQ STACK: DWORD handle of object to remove Note: should be sent whenever an object is erased or closed --------Q-1512--BH0B------------------------- INT 15 - TopView - SEND MESSAGE - "SUBFROM" - RESET OBJECT BITS AH = 12h BH = 0Bh BL = object 00h handle is DWORD on top of stack pointer: reset control flags keyboard: reset control flags 04h clear control flags on KEYBOARD object (handle on top of stack) 05h clear control flags on task's default KEYBOARD object STACK: DWORD which bits to clear (see AH=12h/BH=0Ah"OBJECT") SeeAlso: AH=12h/BH=0Ah"OBJECT" --------Q-1512--BH0C------------------------- INT 15 - TopView - SEND MESSAGE - "OPEN" - OPEN OBJECT AH = 12h BH = 0Ch BL = object 00h handle is DWORD on top of stack window: fill with given character from scroll origin to end keyboard: attach to a window timer: open pointer: start taking input for window panel: associate with a panel file 01h fill task's default window with given char from scrl org to end 02h open given task's mailbox for input (task's handle on stack) 03h open current task's mailbox 04h attach a KEYBOARD to a window (handle on top of stack) 05h attach task's default KEYBOARD to a window 06h open a task's OBJECTQ (task's handle on top of stack) 07h open current task's OBJECTQ 0Ch (DV 2.26+) fill def window of task owning handle on top of stck 0Dh (DV 2.26+) fill default window of parent of current task STACK: (if window) DWORD character to fill with (if keyboard) DWORD handle of window to attach to (if pointer) DWORD handle of window to attach to (if panel) DWORD length of filename or resident panel DWORD address of filename or resident panel (otherwise) nothing Notes: if first byte of panel file name is 1Bh, then the "name" IS a panel if first two bytes of panel file "name" are C0hC3h, then the "name" IS the panel file result code of open may be retrieved with STATUS message logical cursor is left at scroll origin after filling window the task opening a mailbox becomes its owner, and the only task allowed to read the mailbox messages are only sent to a pointer object when the mouse is positioned in the window to which the pointer has been attached there is no need to explicitly open a timer object, as ADDTO and WRITE messages automatically open the timer SeeAlso: AH=12h/BH=0Dh,AH=12h/BH=14h"LOCK" --------Q-1512--BH0D------------------------- INT 15 - TopView - SEND MESSAGE - "CLOSE" - CLOSE OBJECT AH = 12h BH = 0Dh BL = object 00h handle is DWORD on top of stack timer: close keyboard: detach from window and discard queued input pointer: stop taking input panel: close mailbox: close, unlock, and discard any pending messages 02h close given task's mailbox (task's handle on top of stack) 03h close task's default mailbox 04h close KEYBOARD object (handle on top of stack) 05h close task's default KEYBOARD 06h close givent task's OBJECTQ (task's handle on top of stack) 07h close current task's OBJECTQ Notes: when an OBJECTQ is closed, each object in the OBJECTQ is sent an ERASE message (AH=12h/BH=0Eh) when a panel object is closed, the panel file and any panels currently in use are freed; window and keyboard objects created by APPLY are not affected, but field mode input ceases open but idle timer objects consume a small amount of CPU time SeeAlso: AH=12h/BH=0Ch,AH=12h/BH=0Eh,AH=12h/BH=14h"LOCK" --------Q-1512--BH0E------------------------- INT 15 - TopView - SEND MESSAGE - "ERASE" - ERASE OBJECT AH = 12h BH = 0Eh BL = object 00h handle is DWORD on top of stack window: clear from scroll origin to end of window keyboard: discard input timer: cancel current interval pointer: discard all pending messages mailbox: discard all pending messages 01h clear task's default window from scroll origin to end 02h discard all queued messages in mailbox (handle on top of stack) 03h discard all queued messages in current task's default mailbox 04h discard all input queued to KEYBOARD (handle on top of stack) 05h discard all input queued to task's default KEYBOARD 06h remove all objects from OBJECTQ (task's handle on top of stack) 07h remove all objects from current task's OBJECTQ 0Ch (DV 2.26+) clear window of task owning handle on top of stack 0Dh (DV 2.26+) clear default window of parent of current task Note: when an OBJECTQ is erased, each object in the OBJECTQ is also erased SeeAlso: AH=12h/BH=02h --------Q-1512--BH0F------------------------- INT 15 - TopView - SEND MESSAGE - "STATUS" - GET OBJECT STATUS AH = 12h BH = 0Fh BL = object 00h handle is DWORD on top of stack timer: is it running? pointer: return status of last message panel: verify success of last OPEN or APPLY 02h return status of last msg READ from mailbox (handle on stack) 03h return status of last msg READ from task's default mailbox 04h get status of last msg from task's KEYBOARD (task handle on stk) 05h get status of last msg from task's default KEYBOARD 06h return whether OBJECTQ is open or not (handle on top of stack) 07h return whether task's default OBJECTQ is open or not Return: DWORD on top of stack is status Notes: if object is a panel object, the status indicates the error code: 00h successful 14h panel name not in panel directory 15h not enough memory to apply panel 16h invalid panel format 17h panel file already open 81h-92h DOS error codes+80h \ codes > 80h indicate 95h not enough memory to open panel file > that the panel was 98h null panel file name / not opened if object is a timer, the status is: 00000000h open but not running 40000000h open and running 80000000h closed if object is an OBJECTQ, the status is: 00000000h open 80000000h closed if object is a keyboard in keystroke mode, the status is the extended character code (scan code) of teh last keystroke if object is a keyboard in field mode, the status indicates the reason for the last return from the field manager 00h Enter key pressed 01h Button 1 or keystroke selection 02h Button 2 03h validation 04h auto Enter on field 1Bh Escape pressed 46h ^Break pressed other: extended code for key terminating input the status of mailbox messages sent by the window manager is always 80h the status of a pointer message is the same as the status field in the message SeeAlso: AH=12h/BH=04h"READ" --------Q-1512--BH10------------------------- INT 15 - TopView - SEND MESSAGE - "EOF" - GET OBJECT EOF STATUS AH = 12h BH = 10h BL = object 00h handle is DWORD on top of stack window: return TRUE if logical cursor past end of window mailbox: ??? 01h returns TRUE if logical cursor past end of task's def window 02h return ??? for task's mailbox (task's handle on top of stack) 03h return ??? for current task's mailbox 0Ch (DV 2.26+) check log crsr of window owning handle on top of stk 0Dh (DV 2.26+) check log cursor of window of parent task Return: DWORD on top of stack is status --------Q-1512--BH11------------------------- INT 15 - TopView - SEND MESSAGE - "AT" - POSITION OBJECT CURSOR AH = 12h BH = 11h BL = window for which to move cursor 00h window's handle is DWORD on top of stack 01h task's default window 0Ch (DV 2.26+) default window of task owning handle on top of stack 0Dh (DV 2.26+) default window of parent of current task STACK: DWORD column DWORD row --------Q-1512--BH11------------------------- INT 15 - TopView - SEND MESSAGE - "SETNAME" - ASSIGN NAME TO MAILBOX AH = 12h BH = 11h BL = mailbox to name 00h DWORD on top of stack is mailbox handle 02h use given task's mailbox (task's handle on top of stack) 03h use current task's default mailbox STACK: DWORD length of name DWORD address of name SeeAlso: AH=12h/BH=12h"GETNAME",AX=DE0Eh --------Q-1512--BX1100----------------------- INT 15 - TopView - SEND MESSAGE - "SETSCALE" - SET POINTER SCALE FACTOR AH = 12h BX = 1100h STACK: DWORD object handle for pointer object DWORD number of colums to scale pointer position to DWORD number of rows to scale pointer position to SeeAlso: AH=12h/BX=1200h --------Q-1512--BH12------------------------- INT 15 - TopView - SEND MESSAGE - "READN" - GET NEXT N OBJECT BYTES AH = 12h BH = 12h BL = window to read from 00h handle is DWORD on top of stack 01h read next N chars or attributes on task's default window 0Ch (DV 2.26+) read window of task owning handle on top of stack 0Dh (DV 2.26+) read default window of parent of current task STACK: DWORD count Return: STACK: DWORD number of bytes actually read DWORD address of buffer containing data Notes: reading starts at the current logical cursor position; the cursor is updated to point at the character following the last one read any translucent blanks (FFh) which are visible on screen are changed to the character which is seen through them the string produced by the read is placed in an input buffer which may be reused by the next READ or READN of a window window stream opcodes D8h and D9h determine whether the read returns characters or attributes SeeAlso: AH=12h/BH=04h"WINDOW",AH=12h/BH=05h"WINDOW" --------Q-1512--BH12------------------------- INT 15 - DESQview 2.50+ - SEND MESSAGE - "GETNAME" - GET NAME OF MAILBOX AH = 12h BH = 12h BL = mailbox for which to retrieve name 00h DWORD on top of stack is mailbox handle 02h use given task's mailbox (task's handle on top of stack) 03h use current task's default mailbox STACK: DWORD length of buffer for name DWORD pointer to buffer Return: STACK: DWORD length of returned name (or size of buffer, if less) Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x Note: the returned name is not NUL-terminated SeeAlso: AH=12h/BH=11h"SETNAME",AX=DE0Eh --------Q-1512--BX1200----------------------- INT 15 - TopView - SEND MESSAGE - "GETSCALE" - GET POINTER SCALE FACTOR AH = 12h BX = 1200h STACK: DWORD object handle for pointer Return: STACK: DWORD pointer pos scaled as if window were this many colums wide DWORD pointer pos scaled as if window were this many rows high SeeAlso: AH=12h/BX=1100h --------Q-1512--BH13------------------------- INT 15 - TopView - SEND MESSAGE - "REDRAW" - REDRAW WINDOW AH = 12h BH = 13h BL = window object 00h DWORD on top of stack is handle for window to redraw 01h redraw task's default window 0Ch (DV 2.26+) redraw window of task owning handle on top of stack 0Dh (DV 2.26+) redraw default window of parent of current task SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=0Eh --------Q-1512--BH13------------------------- INT 15 - DESQview 2.50+ - SEND MESSAGE - "READINTO" - GET NEXT MAIL MESSAGE AH = 12h BH = 13h BL = mailbox from which to read 00h DWORD on top of stack is mailbox handle 02h use given task's mailbox (task's handle on top of stack) 03h use current task's default mailbox STACK: DWORD size of buffer in bytes DWORD pointer to buffer Return: STACK: DWORD number of bytes read Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x Notes: this call blocks if no input is available, but will return less than the requested number of bytes if some (but insufficient) data is available use this call instead of AH=12h/BH=04h if the mailbox has flag bits 4 or 5 set, as common memory may be exhausted by that call when attempting to read the next message SeeAlso: AH=12h/BH=04h"READ",AH=12h/BH=05h,AH=12h/BH=16h --------Q-1512--BX1300----------------------- INT 15 - TopView - SEND MESSAGE - "SETICON" - SPECIFY POINTER ICON AH = 12h BX = 1300h STACK: DWORD object handle for pointer DWORD character to use for pointer --------Q-1512--BH14------------------------- INT 15 - TopView - SEND MESSAGE - "SETESC" - SET ESCAPE ROUTINE ADDRESS AH = 12h BH = 14h BL = message modifier 00h handle is DWORD on top of stack 01h define user stream 04h intercept keystrokes from KEYBOARD to a window (handle on stack) 05h intercept keystrokes from task's default KEYBOARD to a window STACK: (if window) DWORD user stream number (14h-1Fh) DWORD address of FAR user stream handler (if keyboard) DWORD address of FAR filter function The keyboard filter function is called when the keyboard is in field mode. On entry, AL = character AH = 00h or extended ASCII code if AL = 00h BL = field number CH = cursor column CL = cursor row DL = field type modifier (sixth item in field table entry) DH = seventh item in field table entry ES:SI = window's handle DS:DI -> field table entry for field containing the cursor The filter function should return AH = 00h use keystroke 01h ignore keystroke FFh beep and ignore keystroke Note: the filter function is not allowed to make INT 15, DOS, or BIOS calls --------Q-1512--BH14------------------------- INT 15 - TopView - SEND MESSAGE - "LOCK" - REQUEST EXCLUSIVE ACCESS TO RESOURCE AH = 12h BH = 14h BL = object 00h mailbox handle is DWORD on top of stack 02h use given task's mailbox (task's handle on top of stack) 03h use current task's default mailbox Note: release exclusive access by sending CLOSE message to mailbox access may be requested multiple times, and requires multiple CLOSEs SeeAlso: AH=12h/BH=0Dh --------Q-1512--BH15------------------------- INT 15 - DESQview v2.20+ - SEND MESSAGE - "SETFLAGS" - SET OBJECT FLAGS AH = 12h BH = 15h BL = object 00h DWORD on top of stack mailbox, keyboard, or pointer only 02h mailbox for task whose handle is on top of stack 03h mailbox for current task 04h keyboard for task whose handle is on top of stack 05h keyboard for current task STACK: DWORD flags if mailbox: bit 0: all mail messages in common memory bit 1: allow write even if closed bit 2: don't erase messages when mailbox closed bit 4: (DV/X) append messages with like status and sender (stream-oriented mail) bit 5: (DV/X) store mail in expanded memory (pool grows as needed) bit 6: (DV/X) make mailbox into non-owned mailbox if keyboard: bit 5: exclusive input when keyboard in use for input Return: nothing Notes: only available if the API level has been set to at least 2.20 equivalent to performing SUBFROM and ADDTO calls on the object if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than "READ" (see AH=12h/BX=1300h"READINTO") to retrieve messages SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=16h --------Q-1512--BH16------------------------- INT 15 - DESQview v2.20+ - SEND MESSAGE - "GETFLAGS" - GET OBJECT FLAGS AH = 12h BH = 16h BL = object 00h DWORD on top of stack mailbox, keyboard, or pointer only 02h mailbox for task whose handle is on top of stack 03h mailbox for current task 04h keyboard for task whose handle is on top of stack 05h keyboard for current task Return: STACK: DWORD current control flags (see AH=12h/BH=15h) Notes: only available if the API level has been set to at least 2.20 if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than "READ" (see AH=12h/BH=13h"READINTO") to retrieve messages SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=13h"READINTO",AH=12h/BH=15h --------Q-1512--BH17------------------------- INT 15 - DESQview v2.42-2.52 - BUG AH = 12h BH = 17h BL = object 00h DWORD on top of stack mailbox, keyboard, or pointer only 02h mailbox for task whose handle is on top of stack 03h mailbox for current task 04h keyboard for task whose handle is on top of stack 05h keyboard for current task Notes: due to a fencepost error, message 17h is accepted for mailboxes, keyboards, and pointers, but causes a random branch DESQview v2.50-2.52 are distributed as part of DESQview/X v1.02 --------Q-1512--BH80------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 00h WITH ERROR RECOVERY AH = 12h BH = 80h Note: this function is identical to AH=12h/BH=00h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL: 00h no error 01h invalid values 02h alias invalid 03h handle valid but wrong type 04h invalid handle SeeAlso: AH=12h/BH=00h --------Q-1512--BH81------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 01h WITH ERROR RECOVERY AH = 12h BH = 81h Note: this function is identical to AH=12h/BH=01h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=01h --------Q-1512--BH82------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 02h WITH ERROR RECOVERY AH = 12h BH = 82h Note: this function is identical to AH=12h/BH=02h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=02h --------Q-1512--BH83------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 03h WITH ERROR RECOVERY AH = 12h BH = 83h Note: this function is identical to AH=12h/BH=03h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=03h,AH=12h/BX=0300h --------Q-1512--BH84------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 04h WITH ERROR RECOVERY AH = 12h BH = 84h Note: this function is identical to AH=12h/BH=04h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=04h,AH=12h/BX=0400h --------Q-1512--BH85------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 05h WITH ERROR RECOVERY AH = 12h BH = 85h Note: this function is identical to AH=12h/BH=05h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=05h --------Q-1512--BH86------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 06h WITH ERROR RECOVERY AH = 12h BH = 86h Note: this function is identical to AH=12h/BH=06h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=06h --------Q-1512--BH87------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 07h WITH ERROR RECOVERY AH = 12h BH = 87h Note: this function is identical to AH=12h/BH=07h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=07h --------Q-1512--BH88------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 08h WITH ERROR RECOVERY AH = 12h BH = 88h Note: this function is identical to AH=12h/BH=08h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=08h --------Q-1512--BH89------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 09h WITH ERROR RECOVERY AH = 12h BH = 89h Note: this function is identical to AH=12h/BH=09h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=09h --------Q-1512--BH8A------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ah WITH ERROR RECOVERY AH = 12h BH = 8Ah Note: this function is identical to AH=12h/BH=0Ah, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Ah --------Q-1512--BH8B------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Bh WITH ERROR RECOVERY AH = 12h BH = 8Bh Note: this function is identical to AH=12h/BH=0Bh, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Bh --------Q-1512--BH8C------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ch WITH ERROR RECOVERY AH = 12h BH = 8Ch Note: this function is identical to AH=12h/BH=0Ch, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Ch --------Q-1512--BH8D------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Dh WITH ERROR RECOVERY AH = 12h BH = 8Dh Note: this function is identical to AH=12h/BH=0Dh, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Dh --------Q-1512--BH8E------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Eh WITH ERROR RECOVERY AH = 12h BH = 8Eh Note: this function is identical to AH=12h/BH=0Eh, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Eh --------Q-1512--BH8F------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 0Fh WITH ERROR RECOVERY AH = 12h BH = 8Fh Note: this function is identical to AH=12h/BH=0Fh, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=0Fh --------Q-1512--BH90------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 10h WITH ERROR RECOVERY AH = 12h BH = 90h Note: this function is identical to AH=12h/BH=10h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=10h --------Q-1512--BH91------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 11h WITH ERROR RECOVERY AH = 12h BH = 91h Note: this function is identical to AH=12h/BH=11h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=11h,AH=12h/BX=1100h --------Q-1512--BH92------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 12h WITH ERROR RECOVERY AH = 12h BH = 92h Note: this function is identical to AH=12h/BH=12h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=12h,AH=12h/BX=1200h --------Q-1512--BH93------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 13h WITH ERROR RECOVERY AH = 12h BH = 93h Note: this function is identical to AH=12h/BH=13h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=13h --------Q-1512--BH94------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 14h WITH ERROR RECOVERY AH = 12h BH = 94h Note: this function is identical to AH=12h/BH=14h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=14h --------Q-1512--BH95------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 15h WITH ERROR RECOVERY AH = 12h BH = 95h Note: this function is identical to AH=12h/BH=15h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=15h --------Q-1512--BH96------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 16h WITH ERROR RECOVERY AH = 12h BH = 96h Note: this function is identical to AH=12h/BH=16h, except that DESQview will not pop up a "Programming Error" window, instead returning an error code in AL (see AH=12h/BH=80h) SeeAlso: AH=12h/BH=16h --------T-1513------------------------------- INT 15 - VMiX - "sys_wake" - WAKE SLEEPING PROCESS AH = 13h STACK: WORD process ID Return: AX = status (SYS_OK or SYS_ERROR) SeeAlso: AH=12h"VMiX" --------T-1513------------------------------- INT 15 - MultiDOS Plus - GET TASK CONTROL BLOCK AH = 13h Return: BX:AX -> task control block (see below) SeeAlso: AH=15h"MultiDOS" Format of MultiDOS Plus v4.0 task control block: Offset Size Description 00h DWORD pointer to next TCB 04h 8 BYTEs ASCIZ task name 0Ch 2 BYTEs ??? 0Eh WORD task PSP segment 10h WORD abort/suspend flags 12h WORD current screen segment (see AH=0Bh,AH=0Ch) 14h WORD priority level (0000h-FFFEh) 16h WORD time slice counter 18h 2 BYTEs ??? 1Ah WORD suspend timer value 1Ch WORD stack segment 1Eh WORD stack pointer 20h WORD display type 22h WORD display memory 24h 2 BYTEs ??? 26h WORD termination count 28h WORD equipment flag for BIO10 driver 2Ah BYTE background CRT mode 2Bh WORD screen width in columns 2Dh WORD screen size in bytes 2Fh WORD segment of physical screen memory 31h 16 BYTEs eight cursor positions 41h WORD current cursor shape 43h BYTE active display page 44h WORD CRT controller I/O port base 46h 2 BYTEs ??? 48h WORD foreground task flag 4Ah 6 BYTEs ??? 50h WORD saved video segment (see AH=0Bh,AH=0Ch) 52h DWORD old INT 22 56h DWORD old INT 23 5Ah DWORD old INT 24 5Eh WORD top of memory for task 60h 4 BYTEs ??? 64h WORD DTA segment (see INT 21/AH=1Ah) 66h WORD DTA offset 68h 4 BYTEs ??? 6Ch BYTE current ANSI.SYS attribute 6Dh BYTE current ANSI.SYS column 6Eh BYTE current ANSI.SYS row 6Fh BYTE current ANSI.SYS display state 70h BYTE maximum ANSI.SYS columns 71h BYTE current ANSI.SYS page 72h WORD saved ANSI.SYS cursor position 74h BYTE ANSI.SYS parameter buffer index 75h BYTE current ANSI.SYS screen mode 76h BYTE ANSI.SYS wrap flag 77h 6 BYTEs ANSI.SYS parameter buffer 7Dh BYTE ANSI.SYS keyboard DSR state 7Eh 7 BYTEs ANSI.SYS keyboard DSR buffer 85h 3 BYTEs ??? 88h 16 BYTEs request header for DOS driver calls 98h 14 BYTEs ??? A6h WORD segment of EMS map if EMS task A8h WORD flag: task makes EMS calls AAh WORD EMS handle for task ACh WORD keyboard shift state AEh 12 BYTEs ??? BAh WORD TCB of parent if child task BCh WORD termination code BEh WORD COM port number C0h 4 BYTEs ??? C4h WORD current IRQ number C6h 2 BYTEs ??? C8h WORD miscellaneous flag word CAh 2 BYTEs ??? CCh DWORD old INT 10 D0h WORD EMS alternate map set number D2h 414 BYTEs DOS current disk and directory context (optional) --------T-1514------------------------------- INT 15 - VMiX - "sys_clrwindow" - CLEAR WINDOW AH = 14h STACK: WORD top left corner of window (high byte = row, low = col) WORD bottom right corner of window (high = row, low = col) Return: AX = status (SYS_OK) Note: clears window to color set with "sys_setcolors" (AH=18h) SeeAlso: AH=15h"VMiX",AH=16h"VMiX",AH=18h"VMiX",AH=1Fh"VMiX" --------T-1514------------------------------- INT 15 - MultiDOS Plus - CHECK IF MultiDOS FOREGROUND OR BACKGROUND AH = 14h Return: AX = current state 0000h MultiDOS Plus command prompt is background task 0001h command prompt is foreground task SeeAlso: AH=0Bh"MultiDOS" --------T-1515------------------------------- INT 15 - VMiX - "sys_setbwindow" - SET BANNER WINDOW MESSAGE AH = 15h STACK: DWORD pointer to ASCIZ banner message for top of screen Return: AX = status (SYS_OK) SeeAlso: AH=14h"VMiX",AH=16h"VMiX" --------T-1515------------------------------- INT 15 - MultiDOS Plus - GET SYSTEM BLOCK AH = 15h Return: BX:AX -> system block (see below) SeeAlso: AH=13h"MultiDOS" Format of MultiDOS Plus 4.0 system block: Offset Size Description 00h WORD segment of system control block 02h WORD redirection flag set by /NOREDIRECT 04h WORD no-INT 10 flag set by /NO10 06h DWORD old INT 10 0Ah DWORD new INT 10 0Eh DWORD pointer to WORD with current TCB offset (see AH=13h) 12h DWORD pointer to WORD with idle task TCB offset 16h DWORD pointer to WORD with foreground TCB offset 1Ah DWORD pointer to WORD with MultiDOS TCB offset 1Eh WORD Task Control Block size 20h WORD number of TCBs 22h WORD flag: EMS present 24h WORD EMS page frame base segment 26h WORD 16K pages in EMS page frame 28h WORD base segment for conventional memory tasks 2Ah WORD conventional memory size in paragraphs 2Ch DWORD pointer to list of queue pointers --------T-1516------------------------------- INT 15 - VMiX - "sys_setwindow" - SET ROOT WINDOW SIZE AND HOME CURSOR AH = 16h STACK: DWORD pointer to I/O Request Packet WORD top left corner of window (high byte = row, low = col) WORD bottom right corner of window (high = row, low = col) Return: AX = status (SYS_OK or SYS_ERROR) SeeAlso: AH=14h"VMiX",AH=17h"VMiX" --------T-1516------------------------------- INT 15 - MultiDOS Plus - INITIALIZATION AH = 16h Note: used internally during initialization; any other calls will cause unpredicatable results --------T-1517------------------------------- INT 15 - VMiX - "sys_getcolors" - GET CONSOLE WINDOW COLORS AH = 17h Return: AH = foreground color AL = background color SeeAlso: AH=16h"VMiX",AH=18h"VMiX" --------T-1517------------------------------- INT 15 - MultiDOS Plus - MAP IRQ AH = 17h AL = IRQ to map (01h-0Fh) BX = offset of task control block (see AH=13h) to associate with IRQ Return: AX = status 0000h successful other invalid IRQ Note: the EMS map of the specified TCB is associated with the given interrupt SeeAlso: AH=18h"MultiDOS",AH=19h"MultiDOS" --------T-1518------------------------------- INT 15 - VMiX - "sys_setcolors" - SET CONSOLE COLORS AH = 18h STACK: WORD new background/foreground colors bits 3-0: foreground bits 7-4: background bits 15-8: unused Return: AX = color SeeAlso: AH=14h"VMiX",AH=17h"VMiX",AH=19h"VMiX" --------T-1518------------------------------- INT 15 - MultiDOS Plus - UNMAP IRQ AH = 18h AL = IRQ to unmap (01h-0Fh) Return: AX = status 0000h successful 0001h invalid IRQ Note: results are unpredictable if the IRQ has not been mapped SeeAlso: AH=17h"MultiDOS",AH=19h"MultiDOS" --------T-1519------------------------------- INT 15 - VMiX v2+ - "sys_setconwn" - SET WINDOW COLORS AH = 19h STACK: WORD new background/foreground colors bits 3-0: foreground bits 7-4: background bits 15-8: unused Return: AX = color SeeAlso: AH=18h"VMiX" --------T-1519------------------------------- INT 15 - MultiDOS Plus - UNMAP ALL IRQs AH = 19h Return: AX destroyed Note: for MultiDOS internal use only SeeAlso: AH=17h"MultiDOS",AH=18h"MultiDOS" --------T-151A------------------------------- INT 15 - VMiX v2+ - "sys_sint" - INVOKE SOFTWARE INTERRUPT AH = 1Ah STACK: WORD interrupt number DWORD pointer to register structure Return: AX = returned flags --------T-151A------------------------------- INT 15 - MultiDOS Plus - MAP SEMAPHORE NAME TO NUMBER AH = 1Ah DS:SI -> 8-byte name Return: AL = status 00h successful AH = semaphore number (20h-3Fh) 04h out of string space Notes: all eight bytes of the name are significant if the name does not already exist, it is added to the name table and associated with a free semaphore number names cannot be destroyed SeeAlso: AH=1Bh"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS" --------T-151B------------------------------- INT 15 - VMiX v2+ - "sys_blkmov" - MOVE MEMORY BLOCK AH = 1Bh STACK: DWORD source address DWORD destination address WORD number of words to move Return: nothing --------T-151B------------------------------- INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE BY NAME AH = 1Bh DS:SI -> 8-byte name Return: AH = status 00h successful 02h invalid semaphore number 03h caller already owns semaphore 04h out of string space Notes: (see AH=01h"MultiDOS") equivalent to AH=1Ah followed by AH=01h SeeAlso: AH=01h"MultiDOS",AH=1Ah"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS" --------T-151C------------------------------- INT 15 - VMiX v2+ - "sys_bitblt" - PUT GRAPHICAL OBJECT AT CURSOR POSITION AH = 1Ch STACK: WORD AND/OR pixel with background (00h = OR, 01h = AND) DWORD pointer to object bitmap WORD object width in pixels WORD object height in pixels Return: nothing SeeAlso: AH=1Dh"VMiX" --------T-151C------------------------------- INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE BY NAME AH = 1Ch DS:SI -> 8-byte name Return: AH = status 00h successful 01h not semaphore owner 02h invalid semaphore number 04h out of string space Notes: (see AH=02h"MultiDOS") equivalent to AH=1Ah followed by AH=02h SeeAlso: AH=02h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Dh"MultiDOS" --------T-151D------------------------------- INT 15 - VMiX v2+ - "sys_getfont" - GET CURRENT CONSOLE GRAPHICS FONT AH = 1Dh Return: AX = current font number (00h-03h) SeeAlso: AH=1Ch"VMiX",AH=1Eh"VMiX" --------T-151D------------------------------- INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE BY NAME AH = 1Dh DS:SI -> 8-byte name Return; AH = status 00h semaphore not in use 01h semaphore owned by another task 02h invalid semaphore number 03h caller owns semaphore 04h out of string space Notes: (see AH=10h"MultiDOS") equivalent to AH=1Ah followed by AH=10h SeeAlso: AH=10h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Ch"MultiDOS" --------T-151E------------------------------- INT 15 - VMiX v2+ - "sys_setfont" - SET CONSOLE GRAPHICS FONT AH = 1Eh STACK: WORD new font number (00h-03h) Return: AX = current font number (00h-03h) SeeAlso: AH=1Dh"VMiX" --------T-151E00----------------------------- INT 15 - MultiDOS Plus - CLEAR EVENT COUNTER AX = 1E00h DX = event/trigger number (00h-3Fh) Return: AH = status 00h successful SeeAlso: AX=1E01h,AX=1E02h --------T-151E01----------------------------- INT 15 - MultiDOS Plus - TRIGGER EVENT AX = 1E01h DX = event/trigger number (00h-3Fh) Return: AH = status 00h successful 01h invalid event/trigger number Notes: schedules any task waiting for event; if no task is waiting, the event counter is incremented (and will roll over if it was 65535) may be invoked by interrupt handler SeeAlso: AX=1E00h,AX=1E02h --------T-151E02----------------------------- INT 15 - MultiDOS Plus - WAIT FOR EVENT AX = 1E02h DX = event/trigger number (00h-3Fh) Return: AH = status 00h successful 01h invalid event/trigger number Note: if the event counter is zero, the task is suspended until the event is triggered with AX=1E01h; else, the counter is decremented and the call returns immediately SeeAlso: AX=1E00h,AX=1E01h --------T-151F------------------------------- INT 15 - VMiX v2.???+ - "sys_scrollwin" - SCROLL WINDOW AH = 1Fh STACK: WORD top left corner of window (high byte = row, low = col) WORD bottom right corner of window Return: AX = status (SYS_OK) SeeAlso: AH=14h"VMiX",AH=18h"VMiX" --------T-151F------------------------------- INT 15 - MultiDOS Plus v4.01 - GET MEMORY PARAMETERS AH = 1Fh Return: BX = first segment of conventional memory DX = first segment of EMS swap frame into which MultiDOS will load programs --------T-1520------------------------------- INT 15 - MultiDOS Plus v4.01 - CHECK IF MULTITASKING ENABLED AH = 20h Return: AX = current state 0000h multitasking enabled other TCB of task that disabled multitasking SeeAlso: AH=0Dh"MultiDOS",AH=13h"MultiDOS" --------c-152000----------------------------- INT 15 U - DOS 3+ PRINT.COM - DISABLE CRITICAL REGION FLAG AX = 2000h Desc: stop setting user flag on entry to PRINT critical region SeeAlso: AX=2001h --------c-152001----------------------------- INT 15 U - DOS 3+ PRINT.COM - SET CRITICAL REGION FLAG AX = 2001h ES:BX -> byte which is to be incremented while in a DOS call Desc: specify a user flag which PRINT should set to let an interested application know it is in a critical region SeeAlso: AX=2000h --------O-152010----------------------------- INT 15 - OS HOOK - SETUP SYSREQ ROUTINE (AT,XT286,PS50+) AX = 2010h ??? Return: ??? SeeAlso: AX=2011h --------O-152011----------------------------- INT 15 - OS HOOK - COMPLETION OF SYSREQ FUNCTION (AT,XT286,PS50+) AX = 2011h ??? Return: ??? SeeAlso: AX=2010h --------B-1521------------------------------- INT 15 - SYSTEM - POWER-ON SELF-TEST ERROR LOG (PS50+) AH = 21h AL = subfunction 00h read POST log 01h write POST log BH = device ID BL = error code Return: CF set on error AH = status (00h OK, 01h list full, 80h invalid cmd, 86h unsupported) if function 00h: BX = number of error codes stored ES:DI -> error log Note: the log is a series of words, the first byte of which identifies the error code and the second the device. --------B-1522------------------------------- INT 15 - SYSTEM - later PS/2s - LOCATE ROM BASIC AH = 22h Return: CF set on error AH = status (86h if function not supported) CF clear on success AH = 00h ES:BX -> ROM BASIC Note: if this function is not supported, ROM BASIC is at F600h:0000h SeeAlso: INT 86"BASIC",INT F0"BASIC" --------b-152400----------------------------- INT 15 - SYSTEM - later PS/2s - DISABLE A20 GATE AX = 2400h Return: CF clear if successful AH = 00h CF set on error AH = status 01h keyboard controller is in secure mode 86h function not supported Note: also supported by Qualitas 386MAX v6.01+ SeeAlso: AX=2401h,AX=2402h,AX=2403h --------b-152401----------------------------- INT 15 - SYSTEM - later PS/2s - ENABLE A20 GATE AX = 2401h Return: CF clear if successful AH = 00h CF set on error AH = status 01h keyboard controller is in secure mode 86h function not supported Note: also supported by Qualitas 386MAX v6.01+ SeeAlso: AX=2400h,AX=2402h --------b-152402----------------------------- INT 15 - SYSTEM - later PS/2s - GET A20 GATE STATUS AX = 2402h Return: CF clear if successful AH = 00h AL = current state (00h disabled, 01h enabled) CF set on error AH = status 01h keyboard controller is in secure mode 86h function not supported Note: also supported by Qualitas 386MAX v6.01+ SeeAlso: AX=2400h,AX=2401h --------b-152403----------------------------- INT 15 - SYSTEM - later PS/2s - QUERY A20 GAT SUPPORT AX = 2403h Return: CF clear if successful AH = 00h BX = status of A20 gate support bit 0: supported with bit 1 of I/O port 92h bit 1: supported on keyboard controller bit 15: additional data is available (location not yet defined) CF set on error AH = status 01h keyboard controller is in secure mode 86h function not supported Note: also supported by Qualitas 386MAX v6.01+ --------B-1540------------------------------- INT 15 - SYSTEM - READ/MODIFY PROFILES (CONVERTIBLE) AH = 40h AL = subfunction 00h get system profile in CX and BX 01h set system profile from CX and BX 02h get internal modem profile in BX 03h set internal modem profile from BX Return: CF clear if successful AH = 00h CF set on error AH = status (80h = profile execution failed) --------V-154000----------------------------- INT 15 - Compaq SLT/286 or Portable 386 - READ LCD/PLASMA TIMEOUT AX = 4000h Return: AX = 4000h CL = 00h timeout disabled else timeout in minutes SeeAlso: AX=4001h,AX=4600h --------V-154001CL00------------------------- INT 15 - Compaq SLT/286 or Portable 386 - SET LCD/PLASMA TIMEOUT AX = 4001h CL = 00h timeout disabled else timeout in minutes Return: AL = 00h timeout modified 01h timeout cannot be modified 40h timeout cannot be modified CL = 00h timeout disabled else timeout in minutes SeeAlso: AX=4000h,AX=4601h --------B-1541------------------------------- INT 15 - SYSTEM - WAIT ON EXTERNAL EVENT (CONVERTIBLE and some others) AH = 41h AL = condition type bits 0-2: condition to wait for 0 any external event 1 compare and return if equal 2 compare and return if not equal 3 test and return if not zero 4 test and return if zero bit 3: reserved bit 4: 1=port address, 0=user byte bits 5-7: reserved BH = condition compare or mask value BL = timeout value times 55 milliseconds 00h means no timeout DX = I/O port address if AL bit 4 set ES:DI -> user byte if AL bit 4 clear Note: call AH=C0h and examine bit 3 of feature byte 1 to determine whether this function is supported SeeAlso: AH=C0h --------B-1542------------------------------- INT 15 - SYSTEM - REQUEST POWER OFF (CONVERTIBLE,HP 95LX) AH = 42h AL = 00h to use system profile 01h to force suspend regardless of system profile Note: the HP 95LX apparently suspends regardless of the value in AL; on power-up, execution will resume following the instruction calling this function SeeAlso: AH=44h --------b-154280----------------------------- INT 15 - Compaq SLT/286 - ENTER STANDBY AX = 4280h Return: AH = 42h CF clear if successful CF set if unable to enter standby SeeAlso: AX=4600h,AX=5307h/BX=0001h/CX=0001h --------B-1543------------------------------- INT 15 - SYSTEM - READ SYSTEM STATUS (CONVERTIBLE) AH = 43h Return: AL = status bits (see below) Bitfields for Convertible system status: bit 0 LCD detached bit 1 reserved bit 2 RS232/parallel adapter powered on bit 3 internal modem powered on bit 4 power activated by alarm bit 5 standby power lost bit 6 external power in use bit 7 power low --------B-1544------------------------------- INT 15 - SYSTEM - (DE)ACTIVATE INTERNAL MODEM POWER (CONVERTIBLE) AH = 44h AL = 00h to power off 01h to power on SeeAlso: AH=42h --------b-154600----------------------------- INT 15 - Compaq SLT/286 - READ POWER CONSERVATION/MODEM CONFIGURATION AX = 4600h Return: AH = modem configuration information bit 0 powerup state 0 off 1 on 1 modem installed 2 IRQ line assignment 0 IRQ 4 1 IRQ 3 3 COM port assignment 0 = COM 2 1 = COM 1 4 modem state 0 not assigned 1 assigned 5 modem is on AL = power conservation status information bit 0 power source (0 internal, 1 external) 1-2 low battery state 00 no low battery condition 01 low battery 1 10 reserved 11 low battery 2 3-4 power conservation mode 00 automatic 01 on 10 off 11 reserved BH = default system inactivity timeout (1-21 minutes) BL = current system inactivity timeout (1-21 minutes) CH = default video display inactivity timeout (1-63 minutes) CL = current video display inactivity timeout (1-63 minutes) DH = default fixed disk drive inactivity timeout (1-21 minutes) DL = current fixed disk drive inactivity timeout (1-21 minutes) SeeAlso: AX=4280h,AX=4601h,INT 77 --------b-154601----------------------------- INT 15 - Compaq SLT/286 - Modify Power Conservation/Modem Configuration AX = 4601h BL = system inactivity timeout (1-21 minutes) = FFh do not change CL = video display inactivity timeout (1-63 minutes) = FFh do not change DL = current fixed disk drive inactivity timeout (1-21 minutes) = FFh do not change DH = 00h turn modem OFF = 01h turn modem ON = FFh do not change modem state Return: CF clear if successful AH = 00h BL = current system inactivity timeout (1-21 minutes) CL = current video display inactivity timeout (1-63 minutes) DL = current fixed disk drive inactivity timeout (1-21 minutes) DH = FFh modem state unchanged = 00h modem turned OFF = 01h modem turned ON CF set on error AH = 01h input is out of range = 02h - No modem present SeeAlso: AX=4600h,INT 77 --------D-154900----------------------------- INT 15 - Far East MS-DOS - GET DOS TYPE AX = 4900h Return: CF clear if successful AH = 00h BL = type of DOS running 00h DOS/V 01h DOS/J or DOS/K (early IBM Japan versions of MS-DOS) CF set on error AH = 86h (function not supported) Note: in practice, DOS/J returns AH=86h; AX DOS does not support this call SeeAlso: INT 21/AH=30h --------b-154DD4----------------------------- INT 15 - HP 95LX - INSTALLATION CHECK AX = 4DD4h Return: BX = 4850h ("HP") if HP 95LX CX = ??? (0101h) DL = ??? (00h) SeeAlso: INT 0B"HP 95LX",INT 0F"HP 95LX",INT 5F/AH=00h,INT 60/DI=0100h SeeAlso: INT 61"HP 95LX" --------b-154E------------------------------- INT 15 - HP 95LX - ENABLE/DISABLE LIGHT SLEEP AH = 4Eh AL = light sleep 00h disabled 01h enabled Note: when light sleep is disabled, the system will continue running at full speed; when enabled, it may automatically slow to conserve batteries SeeAlso: INT 06"HP 95LX",INT 60/DI=0100h --------B-154F------------------------------- INT 15 C - KEYBOARD - KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS) AH = 4Fh AL = hardware scan code CF set Return: CF set AL = hardware scan code CF clear scan code should be ignored Note: called by INT 9 handler to translate scan codes; the INT 09 code does not examine the scan code it reads from the keyboard until after this function returns. This permits software to rearrange the keyboard; for example, swapping the CapsLock and Control keys, or turning the right Shift key into Enter. SeeAlso: INT 09,INT 15/AH=C0h --------T-1550------------------------------- INT 15 - VMIX v2.???+ - "sys_vm_page" - SET NEW VIRTUAL PAGE TABLE AH = 50h BX = segment of page directory table CX = page number of page table SeeAlso: AH=10h"VMiX",AH=51h"VMiX",AH=52h"VMiX" --------T-1551------------------------------- INT 15 - VMiX v2.???+ - "sys_vm_func" - EXECUTE FUNCTION IN PROTECTED MODE AH = 51h STACK: DWORD selector:offset of function Return: registers as returned by function Note: executes function with privilege level 0 (highest privilege) SeeAlso: AH=10h"VMiX",AH=52h"VMiX" --------B-155101----------------------------- INT 15 - SYSTEM - later PS/2s - EXPANSION UNIT, RETURN CONFIGURATION NUMBER AX = 5101h Return: CF set if successful AH = 00h AL = current configuration number 00h system unit only FFh configuration not recognized BX = status flag bits 0-14: reserved bit 15: additional data is available (location TBD) CF clear on error AH = status 01h expansion unit is not present 86h function not supported Note: CF convention is the reverse of the standard convention for this interrupt. (Perhaps a typo in the IBM BIOS Tech Ref?) --------T-1552------------------------------- INT 15 - VMiX v2.???+ - "sys_vm_init" - INITIALIZE PROTECTED-MODE ENVIRONMENT AH = 52h SeeAlso: AH=50h"VMiX",AH=51h"VMiX" --------p-155300BX0000----------------------- INT 15 - Advanced Power Management Specification - INSTALLATION CHECK AX = 5300h BX = 0000h (device ID of system BIOS) Return: CF clear if successful AH = major version (BCD) AL = minor version (BCD) BX = 504Dh ("PM") CX = flags bit 0: 16-bit protected mode interface supported bit 1: 32-bit protected mode interface supported bit 2: CPU idle call reduces processor speed bit 3: BIOS power management disabled bits 4-7 reserved CF set on error AH = error code (86h) (see below) Values for error code: 01h power management functionality disabled 02h interface connection already in effect 03h interface not connected 04h real-mode interface not connected 05h 16-bit protected-mode interface already connected 06h 16-bit protected-mode interface not supported 07h 32-bit protected-mode interface already connected 08h 32-bit protected-mode interface not supported 09h unrecognized device ID 0Ah invalid parameter value in CX 0Bh-1Fh reserved for other interface and general errors 20h-3Fh reserved for CPU errors 40h-5Fh reserved for device errors 60h can't enter requested state 61h-7Fh reserved for other system errors 80h no power management events pending 81h-85h reserved for other power management event errors 86h APM not present 87h-9Fh reserved for other power management event errors --------p-155301BX0000----------------------- INT 15 - Advanced Power Management Specification - CONNECT REAL-MODE INTERFACE AX = 5301h BX = 0000h (device ID of system BIOS) Return: CF clear if successful CF set on error AH = error code (02h,09h) (see AX=5300h) SeeAlso: AX=5302h,AX=5303h,AX=5304h --------p-155302BX0000----------------------- INT 15 R - Advanced Power Management Spec - CONNECT 16-BIT PROTMODE INTERFACE AX = 5302h BX = 0000h (device ID of system BIOS) Return: CF clear if successful AX = real-mode segment base address of protected-mode 16-bit code segment BX = offset of entry point CX = real-mode segment base address of protected-mode 16-bit data segment CF set on error AH = error code (05h,06h,09h) (see AX=5300h) Notes: the caller must initialize two consecutive descriptors with the returned segment base addresses; these descriptors must be valid whenever the protected-mode interface is called, and will have their limits arbitrarily set to 64K. the protected mode interface is invoked by making a far call with the same register values as for INT 15; it must be invoked while CPL=0, the code segment descriptor must have a DPL of 0, the stack must be in a 16-bit segment and have enough room for BIOS use and possible interrupts, and the current I/O permission bit map must allow access to the I/O ports used for power management. functions 00h-03h are not available from protected mode SeeAlso: AX=5301h,AX=5303h,AX=5304h --------p-155303BX0000----------------------- INT 15 - Advanced Power Management Spec - CONNECT 32-BIT PROTMODE INTERFACE AX = 5303h BX = 0000h (device ID of system BIOS) Return: CF clear if successful AX = real-mode segment base address of protected-mode 32-bit code segment EBX = offset of entry point CX = real-mode segment base address of protected-mode 16-bit code segment DX = real-mode segment base address of protected-mode 16-bit data segment CF set on error AH = error code (07h,08h,09h) (see AX=5300h) Notes: the caller must initialize three consecutive descriptors with the returned segment base addresses for 32-bit code, 16-bit code, and 16-bit data, respectively; these descriptors must be valid whenever the protected-mode interface is called, and will have their limits arbitrarily set to 64K. the protected mode interface is invoked by making a far call to the 32-bit code segment with the same register values as for INT 15; it must be invoked while CPL=0, the code segment descriptor must have a DPL of 0, the stack must be in a 32-bit segment and have enough room for BIOS use and possible interrupts, and the current I/O permission bit map must allow access to the I/O ports used for power management. functions 00h-03h are not available from protected mode SeeAlso: AX=5301h,AX=5302h,AX=5304h --------p-155304BX0000----------------------- INT 15 - Advanced Power Management Specification - DISCONNECT INTERFACE AX = 5304h BX = 0000h (device ID of system BIOS) Return: CF clear if successful CF set on error AH = error code (03h,09h) (see AX=5300h) SeeAlso: AX=5301h,AX=5302h,AX=5303h --------p-155305----------------------------- INT 15 - Advanced Power Management Specification - CPU IDLE AX = 5305h Return: after system leaves idle state CF clear Notes: call when the system is idle and should be suspended until the next system event or interrupt should not be called from within a hardware interrupt handler to avoid reentrance problems if an interrupt causes the system to resume normal processing, the interrupt may or may not have been handled when the BIOS returns from this call; thus, the caller should allow interrupts on return interrupt handlers may not retain control if the BIOS allows interrupts while in idle mode even if they are able to determine that they were called from idle mode the caller should issue this call continuously in a loop until it needs to perform some processing of its own SeeAlso: AX=1000h,AX=5306h,INT 2F/AX=1680h --------p-155306----------------------------- INT 15 - Advanced Power Management Specification - CPU BUSY AX = 5306h Return: CF clear Notes: called to ensure that the system runs at full speed even on systems where the BIOS is unable to recognize increased activity (especially if interrupts are hooked by other programs and not chained to the BIOS) this call may be made even when the system is already running at full speed, but it will create unnecessary overhead should not be called from within a hardware interrupt handler to avoid reentrance problems SeeAlso: AX=5305h --------p-155307----------------------------- INT 15 - Advanced Power Management Specification - SET POWER STATE AX = 5307h BX = device ID (see below) CX = system state ID 0000h ready (not supported for device ID 0001h) 0001h stand-by 0002h suspend 0003h off (not supported for device ID 0001h) 0004h-FFFFh reserved Return: CF clear if successful CF set on error AH = error code (01h,09h,0Ah,60h) (see AX=5300h) Note: should not be called from within a hardware interrupt handler to avoid reentrance problems Values for device IDs: 0000h system BIOS 0001h all devices for which the system BIOS manages power 01xxh display (01FFh for all attached display devices) 02xxh secondary storage (02FFh for all attached secondary storage devices) 03xxh parallel ports (03FFh for all attached parallel ports) 04xxh serial ports (04FFh for all attached serial ports) 0500h-FFFFh reserved --------p-155307BX0001----------------------- INT 15 - Advanced Power Management Specification - SYSTEM STAND-BY AX = 5307h BX = 0001h CX = 0001h Return: CF clear Notes: puts the entire system into stand-by mode; normally called in response to a System Stand-by Request notification after any necessary processing, but may also be invoked at the caller's discretion should not be called from within a hardware interrupt handler to avoid reentrance problems the stand-by state is typically exited on an interrupt SeeAlso: AX=4280h,AX=5307h/BX=0001h/CX=0002h,AX=530Bh --------p-155307BX0001----------------------- INT 15 - Advanced Power Management Specification - SUSPEND SYSTEM AX = 5307h BX = 0001h CX = 0002h Return: after system is resumed CF clear Notes: puts the entire system into a low-power suspended state; normally called in response to a Suspend System Request notification after any necessary processing, but may also be invoked at the caller's discretion should not be called from within a hardware interrupt handler to avoid reentrance problems the caller may need to update its date and time values because the system could have been suspended for a long period of time SeeAlso: AX=5307h/BX=0001h/CX=0001h,AX=530Bh --------p-155308BXFFFF----------------------- INT 15 - Advanced Power Management Spec - ENABLE/DISABLE POWER MANAGEMENT AX = 5308h BX = FFFFh CX = new state 0000h disabled 0001h enabled Return: CF clear if successful CF set on error AH = error code (01h,09h,0Ah) (see AX=5300h) Notes: when power management is disabled, the system BIOS will not automatically power down devices, enter stand-by or suspended mode, or perform any power-saving actions in response to AX=5305h calls should not be called from within a hardware interrupt handler to avoid reentrance problems SeeAlso: AX=5309h --------p-155309BXFFFF----------------------- INT 15 - Advanced Power Management Specification - RESTORE POWER-ON DEFAULTS AX = 5309h BX = FFFFh Return: CF clear if successful CF set on error AH = error code (09h) (see AX=5300h) Note: should not be called from within a hardware interrupt handler to avoid reentrance problems SeeAlso: AX=5308h --------p-15530ABX0001----------------------- INT 15 - Advanced Power Management Specification - GET POWER STATUS AX = 530Ah BX = 0001h Return: CF clear if successful BH = AC line status 00h off-line 01h on-line FFh unknown other reserved BL = battery status 00h high 01h low 02h critical 03h charging FFh unknown other reserved CL = remaining battery life 00h-64h (0-100) percentage of full charge FFh unknown CF set on error AH = error code (09h) (see AX=5300h) Note: should not be called from within a hardware interrupt handler to avoid reentrance problems --------p-15530B----------------------------- INT 15 - Advanced Power Management Specification - GET POWER MANAGEMENT EVENT AX = 530Bh Return: CF clear if successful BX = event code 0001h system stand-by request 0002h system suspend request 0003h normal resume system notification 0004h critical resume system notification 0005h battery low notification CF set on error AH = error code (03h,80h) (see AX=5300h) Notes: although power management events are often asynchronous, notification will not be made until polled via this call to permit software to only receive event notification when it is prepared to process power management events; since these events are not very time- critical, it should be sufficient to poll once or twice per second the critical resume notification is made after the system resumes from an emergency suspension; normally, the system BIOS only notifies its partner that it wishes to suspend and relies on the partner to actually request the suspension, but no notification is made on an emergency suspension should not be called from within a hardware interrupt handler to avoid reentrance problems SeeAlso: AX=5307h,AX=5307h/BX=0001h/CX=0001h,AX=5307h/BX=0001h/CX=0002h --------T-155400----------------------------- INT 15 C - Omniview Multitasker - INSTALLATION NOTIFICATION AX = 5400h ES:BX -> device information tables DI:DX -> dispatcher entry point Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5407h,INT 2F/AX=DE00h --------T-155401----------------------------- INT 15 C - Omniview Multitasker - PROCESS CREATION AX = 5401h ES:BX = process handle Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5402h,INT 2F/AX=DE04h --------T-155402----------------------------- INT 15 C - Omniview Multitasker - PROCESS DESTRUCTION AX = 5402h ES:DX = process handle Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5401h,INT 2F/AX=DE05h --------T-155403----------------------------- INT 15 C - Omniview Multitasker - SAVE AX = 5403h ES:DX = process swapping out Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5404h,INT 2F/AX=DE08h --------T-155404----------------------------- INT 15 C - Omniview Multitasker - RESTORE AX = 5404h ES:DX = process swapping in Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5403h,INT 2F/AX=DE09h --------T-155405----------------------------- INT 15 C - Omniview Multitasker - SWITCHING TO BACKGROUND AX = 5405h ES:DX = process swapping in Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5406h --------T-155406----------------------------- INT 15 C - Omniview Multitasker - SWITCHING TO FOREGROUND AX = 5406h ES:DX = process swapping in Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5405h --------T-155407----------------------------- INT 15 C - Omniview Multitasker - EXIT NOTIFICATION AX = 5407h Note: called by OmniView to notify programs loaded before OmniView of state changes inside OmniView SeeAlso: AX=5400h,INT 2F/AX=DE03h --------B-1580------------------------------- INT 15 C - OS HOOK - DEVICE OPEN (AT,XT286,PS) AH = 80h BX = device ID CX = process ID CF clear Return: CF clear if successful AH = 00h CF set on error AH = status 80h invalid command (PC,PCjr) 86h function not supported (XT) Note: this function should be hooked by a multitasker which wishes to keep track of device ownership; the default BIOS handler merely returns successfully SeeAlso: AH=81h,AH=82h --------B-1581------------------------------- INT 15 C - OS HOOK - DEVICE CLOSE AH = 81h BX = device ID CX = process ID CF clear Return: CF clear if successful AH = 00h CF set on error AH = status (see AH=80h) Note: this function should be hooked by a multitasker which wishes to keep track of device ownership; the default BIOS handler merely returns successfully SeeAlso: AH=80h,AH=82h --------B-1582------------------------------- INT 15 C - OS HOOK - PROGRAM TERMINATION AH = 82h BX = process ID CF clear Return: CF clear if successful AH = 00h CF set on error AH = status (see AH=80h) Notes: closes all devices opened by the given process ID with function 80h this function should be hooked by a multitasker which wishes to keep track of device ownership; the default BIOS handler merely returns successfully SeeAlso: AH=80h,AH=81h --------B-1583------------------------------- INT 15 - BIOS - SET EVENT WAIT INTERVAL (AT,PS50+) AH = 83h AL = subfunction 00h set interval CX:DX = microseconds to delay ES:BX -> byte whose high bit is to be set at end of interval 01h cancel wait interval Return: CF set on error or function already busy AH = status 80h invalid command (PC,PCjr) 86h function not supported (XT and later) CF clear if successful Notes: the resolution of the wait period is 977 microseconds on most systems because most BIOSes use the 1/1024 second fast interrupt from the AT real-time clock chip which is available on INT 70 IBM AT 1/10/84 BIOS ignores AL and always performs subfunction 00h SeeAlso: AH=86h,INT 70 --------B-1584------------------------------- INT 15 - BIOS - JOYSTICK SUPPORT (XT after 11/8/82,AT,XT286,PS) AH = 84h DX = subfunction 0000h read joystick switches Return: AL bits 7-4 = switch settings 0001h read positions of joysticks Return: AX = X position of joystick A BX = Y position of joystick A CX = X position of joystick B DX = Y position of joystick B Return: CF set on error AH = status 80h invalid command (PC,PCjr) 86h function not supported (other) CF clear if successful Notes: if no game port is installed, subfunction 0000h returns AL=00h (all switches open) and subfunction 0001h returns AX=BX=CX=DX=0000h a 250kOhm joystick typically returns 0000h-01A0h --------B-1585------------------------------- INT 15 C - OS HOOK - SysRq KEY ACTIVITY (AT,PS) AH = 85h AL = 00h SysRq key pressed = 01h SysRq key released CF clear Return: CF clear if successful AH = 00h CF set on error AH = status (see AH=84h) Notes: called by keyboard decode routine the default handler simply returns successfully; programs which wish to monitor the SysRq key must hook this call SeeAlso: INT 09 --------B-1586------------------------------- INT 15 - BIOS - WAIT (AT,PS) AH = 86h CX:DX = interval in microseconds Return: CF clear if successful (wait interval elapsed) CF set on error or AH=83h wait already in progress AH = status (see AH=84h) Note: the resolution of the wait period is 977 microseconds on most systems because most BIOSes use the 1/1024 second fast interrupt from the AT real-time clock chip which is available on INT 70 SeeAlso: AH=83h,INT 1A/AX=FF01h,INT 70 --------B-1587------------------------------- INT 15 - SYSTEM - COPY EXTENDED MEMORY AH = 87h CX = number of words to copy (max 8000h) ES:SI -> global descriptor table Return: CF set on error CF clear if successful AH = status 00h source copied into destination 01h parity error 02h interrupt error 03h address line 20 gating failed 80h invalid command (PC,PCjr) 86h unsupported function (XT,PS30) Notes: copy is done in protected mode with interrupts disabled this function is incompatible with the OS/2 compatibility box SeeAlso: AH=88h,AH=89h Format of global descriptor table: Offset Size Description 00h 16 BYTEs zeros 10h WORD source segment length in bytes (2*CX-1 or greater) 12h 3 BYTEs 24-bit linear source address, low byte first 15h BYTE source segment access rights (93h) 16h WORD zero 18h WORD destination segment length in bytes (2*CX-1 or greater) 1Ah 3 BYTEs 24-bit linear destination address, low byte first 1Dh BYTE destination segment access rights (93h) 1Eh 18 BYTEs zeros --------B-1588------------------------------- INT 15 - SYSTEM - GET EXTENDED MEMORY SIZE (286+) AH = 88h Return: CF clear if successful AX = number of contiguous KB starting at absolute address 100000h CF set on error AH = status 80h invalid command (PC,PCjr) 86h unsupported function (XT,PS30) Notes: TSRs which wish to allocate extended memory to themselves often hook this call, and return a reduced memory size. They are then free to use the memory between the new and old sizes at will. the standard BIOS only returns memory between 1MB and 16MB; use AH=C7h for memory beyond 16MB SeeAlso: AH=87h,AH=C7h --------B-1589------------------------------- INT 15 - SYSTEM - SWITCH TO PROTECTED MODE AH = 89h BL = interrupt number of IRQ0 (IRQ1-7 use next 7 interrupts) BH = interrupt number of IRQ8 (IRQ9-F use next 7 interrupts) ES:SI -> GDT for protected mode offset 0h null descriptor (initialize to zeros) 8h GDT descriptor 10h IDT descriptor 18h DS 20h ES 28h SS 30h CS 38h uninitialized, used to build descriptor for BIOS CS CX = offset into protected-mode CS to jump to Return: CF set on error AH = FFh error enabling address line 20 CF clear if successful AH = 00h in protected mode at specified address Note: BL and BH must be multiples of 8 SeeAlso: AH=87h,AH=88h,INT 67/AX=DE0Ch --------B-1590------------------------------- INT 15 - OS HOOK - DEVICE BUSY (AT,PS) AH = 90h AL = device type 00h disk 01h diskette 02h keyboard 03h PS/2 pointing device 21h waiting for keyboard input (Phoenix BIOS) 80h network FBh digital sound (Tandy) FCh disk reset (PS) FDh diskette motor start FEh printer ES:BX -> request block for type codes 80h through BFh CF clear Return: CF set if wait time satisfied CF clear if driver must perform wait AH = 00h Notes: type codes are allocated as follows: 00-7F non-reentrant devices; OS must arbitrate access 80-BF reentrant devices; ES:BX points to a unique control block C0-FF wait-only calls, no complementary INT 15/AH=91h call floppy and hard disk BIOS code uses this call to implement a timeout; for device types 00h and 01h, a return of CF set means that the timeout expired before the disk responded. this function should be hooked by a multitasker to allow other tasks to execute while the BIOS is waiting for I/O completion; the default handler merely returns with AH=00h and CF clear SeeAlso: AH=91h,INT 13/AH=00h,INT 17/AH=00h,INT 1A/AH=83h --------B-1591------------------------------- INT 15 - OS HOOK - DEVICE POST (AT,PS) AH = 91h AL = device type (see AH=90h) ES:BX -> request block for type codes 80h through BFh CF clear Return: AH = 00h Note: this function should be hooked by a multitasker to allow other tasks to execute while the BIOS is waiting for I/O completion; the default handler merely returns with AH=00h and CF clear SeeAlso: AH=90h --------b-15BC------------------------------- INT 15 - Phoenix 386 BIOS - DETERMINE CPU SPEED AH = BCh Return: CF clear BYTE 0040h:00B0h set to ??? (43 on my 386/33) Note: reads system timer channel 0 twice, then does calculations on returned values --------E-15BF00----------------------------- INT 15 - Rational Systems DOS/16M - ??? AX = BF00h ??? Return: ??? Note: under DESQview/X 1.02 DVDOS4GX.DVR, this call is identical to AX=BF02h SeeAlso: AX=BF02h --------E-15BF01----------------------------- INT 15 - Rational Systems DOS/16M - ??? AX = BF01h ??? Return: ??? Notes: under DESQview/X 1.02 DVDOS4GX.DVR, this call is identical to AX=BF02h called by DOS/4GW SeeAlso: AX=BF00h,AX=BF02h --------E-15BF02DX0000----------------------- INT 15 - Rational Systems DOS/16M - INSTALLATION CHECK AX = BF02h DX = 0000h Return: DX = nonzero if installed DX:SI -> XBRK structure (see below) Note: this function is also supported by DOS/4G SeeAlso: AX=BF01h,AX=BFDCh,AX=BFDEh/BX=0000h SeeAlso: INT 21/AH=FFh/DH=0Eh,INT 2F/AH=A1h,INT 2F/AX=F100h,INT 2F/AX=FBA1h Format of XBRK structure: Offset Size Description 00h DWORD linear address of first available byte 04h DWORD linear address of last available byte + 1 ??? 08h DWORD real-mode address of XBRK structure??? 0Ch DWORD ??? 10h 2 BYTEs ??? 12h WORD segment of ??? 14h 8 BYTEs ??? 1Ch 512 BYTEs protected-mode IDT 21Ch N BYTEs protected-mode GDT --------E-15BF03----------------------------- INT 15 - Rational Systems DOS/4GW - UNINSTALL??? AX = BF03h BX = PSP segment of extender ??? Return: ??? Note: if BX is not the PSP segment of the extender, it passes the call down the INT 15 chain; this allows nested instances of the extender SeeAlso: AX=BF06h --------E-15BF04----------------------------- INT 15 - Rational Systems DOS/4GW - ??? AX = BF04h BX = PSP segment of extender Return: nothing??? Notes: if BX is not the PSP segment of the extender, it passes the call down the INT 15 chain; this allows nested instances of the extender grabs INT 2Fh and installs handlers for INT 2F/AX=1605h-1607h SeeAlso: INT 2F/AX=1607h/BX=22C0h --------E-15BF05----------------------------- INT 15 - Rational Systems DOS/4GW - INITIALIZE PROTECTED-MODE INTERFACE AX = BF05h BX = PSP segment of extender Return: nothing??? Notes: if BX is not the PSP segment of the extender, it passes the call down the INT 15 chain; this allows nested instances of the extender calls INT 67/AX=DE01h if ??? --------E-15BF06----------------------------- INT 15 - Rational Systems DOS/4GW - ??? AX = BF06h BX = PSP segment of extender ??? Return: ??? Note: if BX is not the PSP segment of the extender, it passes the call down the INT 15 chain; this allows nested instances of the extender SeeAlso: AX=BF03h --------E-15BFDCDX0000----------------------- INT 15 - Rational Systems DOS/4GW - INSTALLATION CHECK AX = BFDCh DX = 0000h SI = 0000h Return: DX = nonzero if installed DX:SI -> XBRK structure (see AX=BF02h) SeeAlso: AX=BF02h --------E-15BFDEBX0000----------------------- INT 15 - DESQview/X - DVDOS4GX.DVR - INSTALLATION CHECK AX = BFDEh BX = 0000h Return: AX = ??? (0003h) BX = FFFFh SeeAlso: AX=BF02h --------E-15BFDEBX0001----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET PROCESS MANAGER NAME AX = BFDEh BX = 0001h Return: BX = 0000h (success) CX:DX -> name of process manager executable SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0002----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - SET ??? AX = BFDEh BX = 0002h CX:DX -> ??? Return: BX = 0000h (success) SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=0003h --------E-15BFDEBX0003----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0003h Return: BX = 0000h (success) CX:DX -> ??? SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=0002h --------E-15BFDEBX0004----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 0004h CL = ??? Return: BX = 0000h (success) CX:DX -> XBRK structure (see AX=BF02h) SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0005----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 0005h CX = new value for ??? Return: BX = 0000h (success) AX = old value of ??? DS:SI -> ??? (if AX nonzero on return) ES:DI -> ??? (if AX zero on return) Note: called by DOS4GW.EXE SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0006----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0006h Return: BX = 0000h (success) AH = interrupt number??? (BEh) CX:DX = ??? SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=0007h,INT BE"DESQview" --------E-15BFDEBX0007----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - SET ??? AX = BFDEh BX = 0007h CX:DX = ??? Return: BX = 0000h (success) SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=0006h --------E-15BFDEBX0008----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 0008h CX = segment of ??? DS = ??? Return: BX = status 0000h successful AL = ??? (80h or C0h) DX = ??? (0603h) if AL=C0h 0001h failed AX = 0000h Note: called by DOS4GW.EXE SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0009----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET PROTECTED MODE PROGRAM LOADER AX = BFDEh BX = 0009h Return: BX = 0000h (success) CX:DX -> full pathname to LOAD32.EXP SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX000A----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - DECREMENT ??? AX = BFDEh BX = 000Ah Return: BX = 0000h (success) AX = new value of ??? counter Notes: also resets a variety of values if the counter goes negative called by DOS4GW.EXE SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=000Bh --------E-15BFDEBX000B----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - INCREMENT ??? AX = BFDEh BX = 000Bh Return: AX = new value of ??? counter Note: called by DOS4GW.EXE SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=000Ah --------E-15BFDEBX000C----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Ch CL = ??? 00h nonzero Return: ??? SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX000D----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Dh ??? Return: ??? SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX000E----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Eh DX:CX -> ??? Return: AX = segment of handle for calling task BX = ??? (probably destroyed) DX:CX -> ??? SeeAlso: AX=BFDEh/BX=0000h,AX=BFDEh/BX=000Fh,AX=BFDEh/BX=0013h --------E-15BFDEBX000F----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Fh Return: AX = segment of handle for calling task BX = ??? (probably destroyed) DX:CX -> ??? Note: identical to AX=BFDEh/BX=000Eh with CX:DX = 0000h:0000h SeeAlso: AX=BFDEh/BX=000Eh,AX=BFDEh/BX=0010h --------E-15BFDEBX0010----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET TASK HANDLE AX = BFDEh BX = 0010h Return: AX = segment of caller's task handle BX destroyed SeeAlso: AX=BFDEh/BX=000Fh --------E-15BFDEBX0011----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0011h Return: CX = code segment of DVDOS4GX.DVR BX = ??? (0004h) SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0012----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0012h Return: DX = code segment of DVDOS4GX.DVR BX = ??? (012Ch) CX = ??? (0006h) SeeAlso: AX=BFDEh/BX=0000h --------E-15BFDEBX0013----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0013h Return: DX:CX -> ??? SeeAlso: AX=BFDEh/BX=000Eh --------E-15BFDEBX0014----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - LOCK ??? MAILBOX AX = BFDEh BX = 0014h CX = index of ??? mailbox (0000h-0004h valid, but no range checking done) Return: AX,BX destroyed SeeAlso: AX=BFDEh/BX=0015h,AX=BFDEh/BX=0017h --------E-15BFDEBX0015----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - UNLOCK ??? MAILBOX AX = BFDEh BX = 0015h CX = index of ??? mailbox (0000h-0004h valid, but no range checking done) Return: AX,BX destroyed SeeAlso: AX=BFDEh/BX=0014h,AX=BFDEh/BX=0016h --------E-15BFDEBX0016----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - CHECK IF ??? MAILBOX OWNED AX = BFDEh BX = 0016h CX = index of ??? mailbox (0000h-0004h valid, but no range checking done) Return: AX = status 0000h no one owns mailbox 0001h mailbox has an owner BX destroyed SeeAlso: AX=BFDEh/BX=0015h,AX=BFDEh/BX=0017h --------E-15BFDEBX0017----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? MAILBOX OWNER AX = BFDEh BX = 0017h CX = index of ??? mailbox (0000h-0004h valid, but no range checking done) Return: AX = segment of mailbox owner's handle BX = segment of caller's task handle SeeAlso: AX=BFDEh/BX=0015h,AX=BFDEh/BX=0016h --------E-15BFDEBXFFFD----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = FFFDh Return: CX:DX = ??? SeeAlso: AX=BFDEh/BX=FFFEh --------E-15BFDEBXFFFE----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - SET ??? AX = BFDEh BX = FFFEh CX:DX = ??? SeeAlso: AX=BFDEh/BX=FFFDh --------E-15BFDEBXFFFF----------------------- INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - NOP AX = BFDEh BX = FFFFh SeeAlso: AX=BFDEh/BX=0000h --------B-15C0------------------------------- INT 15 - SYSTEM - GET CONFIGURATION (XT after 1/10/86,AT mdl 3x9,CONV,XT286,PS) AH = C0h Return: CF set if BIOS doesn't support call CF clear on success ES:BX -> ROM table (see below) AH = status 00h successful 86h unsupported function Notes: the 1/10/86 XT BIOS returns an incorrect value for the feature byte the configuration table is at F000h:E6F5h in 100% compatible BIOSes Dell machines contain the signature "DELL" or "Dell" at absolute FE076h and a model byte at absolute address FE845h Tandy 1000 machines contain 21h in the byte at F000h:C000h some AST machines contain the string "COPYRIGHT AST RESEARCH" one byte past the end of the configuration table the Phoenix 386 BIOS contains a second version and date string (presumably the last modification for that OEM version) beginning at F000h:FFD8h, with each byte doubled (so that both ROM chips contain the complete information) SeeAlso: AH=C7h,AH=C9h,AH=D1h Format of ROM configuration table: Offset Size Description 00h WORD number of bytes following 02h BYTE model (see below) 03h BYTE submodel (see below) 04h BYTE BIOS revision: 0 for first release, 1 for 2nd, etc. 05h BYTE feature byte 1: bit 7: DMA channel 3 used by hard disk BIOS bit 6: 2nd 8259 installed bit 5: Real-Time Clock installed bit 4: INT 15/AH=4Fh called upon INT 9h bit 3: wait for external event (INT 15/AH=41h) supported bit 2: extended BIOS area allocated (usually at top of RAM) bit 1: bus is Micro Channel instead of ISA bit 0: system has dual bus (Micro Channel + ISA) 06h BYTE feature byte 2: bit 7: reserved bit 6: INT 16/AH=09h (keyboard functionality) supported bit 5: INT 15/AH=C6h (get POS data) supported bit 4: INT 15/AH=C7h (return memory map info) supported bit 3: INT 15/AH=C8h (en/disable CPU functions) supported bit 2: non-8042 keyboard controller bit 1: data streaming supported bit 0: reserved 07h BYTE feature byte 3: bits 7-5 reserved bit 4: ??? (set on 1992 PS/1's, N51SX, CL57SX, 35SX?, 40SX?) bit 3: SCSI subsystem supported on system board bit 2: information panel installed bit 1: IML (Initial Machine Load) system bit 0: SCSI supported in IML 08h BYTE feature byte 4: bit 7: ??? (set on N51SX, CL57SX) bits 6-4: reserved bit 3: ??? (set on some 1992 PS/1's, 35SX, 40SX) bits 2-1: reserved bit 0: ??? (set on N51SX, CL57SX, 57SX) 09h BYTE feature byte 5: reserved (0) (IBM) ??? (08h) (Phoenix 386 v1.10) ---AWARD BIOS--- 0Ah N BYTEs AWARD copyright notice ---Phoenix BIOS--- 0Ah BYTE ??? (00h) 0Bh BYTE major version 0Ch BYTE minor version (BCD) 0Dh 4 BYTEs ASCIZ string "PTL" (Phoenix Technologies Ltd) Values for model/submodel/revision: Model Submdl Rev BIOS date System FFh * * 04/24/81 PC (original) FFh * * 10/19/81 PC (some bugfixes) FFh * * 10/27/82 PC (HD, 640K, EGA support) FFh 46h *** ??? Olivetti M15 FEh * * 08/16/82 PC XT FEh * * 11/08/82 PC XT and Portable FEh 43h *** ??? Olivetti M240 FEh A6h ??? ??? ??? (checked for by 386MAX v6.01) FDh * * 06/01/83 PCjr FCh * * 01/10/84 AT models 068,099 6 MHz 20MB FCh 00h 01h 06/10/85 AT model 239 6 MHz 30MB FCh 00h <> 01h ??? 7531/2 Industrial AT FCh 01h 00h 11/15/85 AT models 319,339 8 MHz, Enh Keyb, 3.5" FCh 01h 00h 09/17/87 Tandy 3000 FCh 01h 00h 01/15&88 Toshiba T5200/100 FCh 01h 00h 12/26*89 Toshiba T1200/XE (Those date characters are not typos) FCh 01h 30h ??? Tandy 3000NL FCh 01h ??? ??? Compaq 286/386 FCh 02h 00h 04/21/86 PC XT-286 FCh 04h 00h 02/13/87 ** PS/2 Model 50 (10 MHz/1 ws 286) FCh 04h 03h 04/18/88 PS/2 Model 50Z (10 MHz/0 ws 286) FCh 05h 00h 02/13/87 ** PS/2 Model 60 (10 MHz 286) FCh 06h ??? ??? 7552 "Gearbox" FCh 08h *** ??? Epson, unknown model FCh 09h 00h ??? PS/2 Model 25 (10 MHz 286) FCh 09h 02h 06/28/89 PS/2 Model 30-286 FCh 0Bh 00h 02/16/90 PS/1 Model 2011 (10 MHz 286) FCh 30h *** ??? Epson, unknown model FCh 31h *** ??? Epson, unknown model FCh 33h *** ??? Epson, unknown model FCh 42h *** ??? Olivetti M280 FCh 45h *** ??? Olivetti M380 (XP 1, XP3, XP 5) FCh 48h *** ??? Olivetti M290 FCh 4Fh *** ??? Olivetti M250 FCh 50h *** ??? Olivetti M380 (XP 7) FCh 51h *** ??? Olivetti PCS286 FCh 52h *** ??? Olivetti M300 FCh 81h 00h 01/15/88 Phoenix 386 BIOS v1.10 10a FBh 00h 01h 01/10/86 PC XT, Enh Keyb, 3.5" support FBh 00h 02h 05/09/86 PC XT FBh 4Ch *** ??? Olivetti M200 FAh 00h 00h 09/02/86 PS/2 Model 30 (8 MHz 8086) FAh 00h 01h 12/12/86 PS/2 Model 30 FAh 01h 00h ??? PS/2 Model 25/25L (8 MHz 8086) FAh 4Eh *** ??? Olivetti M111 F9h 00h 00h 09/13/85 PC Convertible F8h 00h 00h 03/30/87 ** PS/2 Model 80 (16MHz 386) F8h 01h 00h 10/07/87 PS/2 Model 80 (20MHz 386) F8h 04h 02h 04/11/88 PS/2 Model 70 20MHz, type 2 system brd F8h 04h 03h 03/17/89 PS/2 Model 70 20MHz, type 2 system brd F8h 09h 00h ??? PS/2 Model 70 16MHz, type 1 system brd F8h 09h 02h 04/11/88 PS/2 Model 70 some models F8h 09h 03h 03/17/89 PS/2 Model 70 some models F8h 0Bh 00h 01/18/89 PS/2 Model P70 (8573-121) typ 2 sys brd F8h 0Bh 02h 12/16/89 PS/2 Model P70 ?? F8h 0Ch 00h 11/02/88 PS/2 Model 55SX (16 MHz 386SX) F8h 0Dh 00h ??? PS/2 Model 70 25MHz, type 3 system brd F8h 11h 00h 10/01/90 PS/2 Model 90 (25 MHz 486) F8h 13h 00h 10/01/90 PS/2 Model 90 (33 MHz 486) F8h 14h 00h 10/01/90 PS/2 Model 90-AK9 (25 MHz 486) F8h 16h 00h 10/01/90 PS/2 Model 90-AKD (33 MHz 486) F8h 19h 05h ??? PS/2 Model 35/35LS or 40 (20 MHz 386SX) F8h 1Bh 00h 10/02/89 PS/2 Model 70-486 (25 MHz 486) F8h 1Ch 00h 02/08/90 PS/2 Model 65-121 (16 MHz 386SX) F8h 1Eh 00h 02/08/90 PS/2 Model 55LS (16 MHz 386SX) F8h 23h 01h ??? PS/2 Model L40 (20 MHz 386SX) F8h 25h 06h ??? PS/2 Model M57 (20 MHz 386SLC) F8h 26h 01h ??? PS/2 Model 57 (20 MHz 386SX) F8h 2Ah 00h ??? PS/2 Model 95 (50 MHz 486) F8h 2Bh 00h ??? PS/2 Model 90 (50 MHz 486) F8h 2Ch 01h ??? PS/2 Model 95 (20 MHz 486SX) F8h 2Dh 00h ??? PS/2 Model 90 (20 MHz 486SX) F8h 2Eh 01h ??? PS/2 Model 95 (20 MHz 486SX + 487SX) F8h 2Fh 00h ??? PS/2 Model 90 (20 MHz 486SX + 487SX) F8h 30h 00h ??? PS/1 Model 2121 (16 MHz 386SX) F8h 50h 00h ??? PS/2 Model P70 (8573) (16 MHz 386) F8h 50h 01h 12/16/89 PS/2 Model P70 (8570-031) F8h 52h 00h ??? PS/2 Model P75 (33 MHz 486) F8h 61h *** ??? Olivetti P500 F8h 62h *** ??? Olivetti P800 F8h 80h 00h ??? PS/2 Model 80 (25 MHz 386) F8h 80h 01h 11/21/89 PS/2 Model 80-A21 F8h ??? ??? ??? PS/2 Model 90 (25 MHz 486SX) F8h ??? ??? ??? PS/2 Model 95 (25 MHz 486SX) F8h ??? ??? ??? PS/2 Model 90 (25 MHz 486SX + 487SX) F8h ??? ??? ??? PS/2 Model 95 (25 MHz 486SX + 487SX) E1h ??? ??? ??? ??? (checked for by DOS4GW.EXE) 9Ah * * ??? Compaq XT/Compaq Plus 30h ??? ??? ??? Sperry PC 2Dh * * ??? Compaq PC/Compaq Deskpro ??? 56h ??? ??? Olivetti, unknown model ??? 74h ??? ??? Olivetti, unknown model * This BIOS call is not implemented in these early versions. Read Model byte at F000h:FFFEh and BIOS date at F000h:FFF5h. ** These BIOS versions require the DASDDRVR.SYS patches. *** These Olivetti and Epson machines store the submodel in the byte at F000h:FFFDh. Values for Dell model byte: 02h Dell 200 03h Dell 300 05h Dell 220 06h Dell 310 07h Dell 325 09h Dell 310A 0Ah Dell 316 0Bh Dell 220E 0Ch Dell 210 0Dh Dell 316SX 0Eh Dell 316LT 0Fh Dell 320LX 11h Dell 425E --------B-15C1------------------------------- INT 15 - SYSTEM - RETURN EXTENDED-BIOS DATA-AREA SEGMENT ADDRESS (PS) AH = C1h Return: CF set on error CF clear if successful ES = segment of data area SeeAlso: AH=04h"ABIOS" --------M-15C200----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - ENABLE/DISABLE AX = C200h BH = new state 00h disabled 01h enabled Return: CF set on error AH = status 00h successful 01h invalid function 02h invalid input 03h interface error 04h need to resend 05h no device handler installed --------M-15C201----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - RESET AX = C201h Return: CF set on error AH = status (see AX=C200h) CF clear if successful BH = device ID BL = value returned by attached device after reset AAh if device is a mouse Note: after successful completion of this call, the pointing device is set as follows: disabled, sample rate 100 Hz, resolution 4 counts/mm, scaling 1:1, unchanged data package size SeeAlso: INT 33/AX=0000h --------M-15C202----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - SET SAMPLING RATE AX = C202h BH = sampling rate 00h 10/second 01h 20/second 02h 40/second 03h 60/second 04h 80/second 05h 100/second 06h 200/second Return: CF set on error AH = status (see AX=C200h) SeeAlso: INT 33/AX=001Ch --------M-15C203----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - SET RESOLUTION AX = C203h BH = resolution 00h one count per mm 01h two counts per mm 02h four counts per mm 03h eight counts per mm Return: CF set on error AH = status (see AX=C200h) --------M-15C204----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - GET TYPE AX = C204h Return: CF set on error AH = status (see AX=C200h) CF clear if successful BH = device ID --------M-15C205----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - INITIALIZE AX = C205h BH = data package size (1 - 8 bytes) Return: CF set on error AH = status (see AX=C200h) Note: the pointing device is set as follows: disabled, 100 Hz sample rate, resolution 4 counts/mm, scaling 1:1 SeeAlso: AX=C201h --------M-15C206----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - EXTENDED COMMANDS AX = C206h BH = subfunction 00h return device status Return: BL = pointing device status (see below) CL = resolution (see AX=C203h) DL = sample rate, reports per second 01h set scaling at 1:1 02h set scaling at 2:1 Return: CF set on error AH = status (see AX=C200h) Bitfields for pointing device status: bit 0 right button pressed bit 1 reserved bit 2 left button pressed bit 3 reserved bit 4 0 if 1:1 scaling, 1 if 2:1 scaling bit 5 device enabled bit 6 0 if stream mode, 1 if remote mode bit 7 reserved --------M-15C207----------------------------- INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - SET DEVICE HANDLER ADDR AX = C207h ES:BX -> FAR user device handler Return: CF set on error AH = status (see AX=C200h) Note: when the subroutine is called, it is passed the following values on the stack; the handler should return with a FAR return without popping the stack: WORD 1: status (see below) WORD 2: X data (high byte = 00h) WORD 3: Y data (high byte = 00h) WORD 4: 0000h SeeAlso: INT 33/AX=000Ch Bitfields for status: bits 15-8 reserved (0) bit 7 Y data overflowed bit 6 X data overflowed bit 5 Y data is negative bit 4 X data is negative bit 3 reserved (1) bit 2 reserved (0) bit 1 right button pressed bit 0 left button pressed --------B-15C3------------------------------ INT 15 - SYSTEM - ENABLE/DISABLE WATCHDOG TIMEOUT (PS50+) AH = C3h AL = function 00h disable PS/2 watchdog timer 01h enable PS/2 watchdog timer BX = timer counter (0001h-00FFh) 02h disable Gearbox system 03h enable Gearbox system Return: CF set on error CF clear if successful Note: the watchdog timer generates an NMI --------B-15C4------------------------------- INT 15 - SYSTEM - PROGRAMMABLE OPTION SELECT (PS50+) AH = C4h AL = 00h return base POS register address 01h enable selected slot for setup BL = slot number (1 to 8) 02h disable setup for all slots Return: CF set on error DX = base POS register address (if function 00h) SeeAlso: AH=C6h --------B-15C5------------------------------- INT 15 UC - OS HOOK - ROM BIOS TRACING CALLOUT (PS30/286,PS50Z,PS95) AH = C5h AL = interrupt being invoked 01h INT 19 02h INT 14 03h INT 16 04h INT 40 (floppy INT 13) 05h INT 17 06h INT 10 07h INT 12 08h INT 11 09h INT 1A Return: all registers except AX must be preserved Notes: called as the very first action of the indicated ROM BIOS interrupt handlers on the PS/2 Models 30/286, 50Z, and 95 default handler does nothing and returns CF clear for the above subfunctions, CF set and AH=86h for all other subfunctions value of AX passed to the original interrupt handler is pushed on stack immediately prior to call --------B-15C6------------------------------- INT 15 U - later PS/2 models - GET POS DATA AH = C6h ??? Return: ??? Notes: this function is referenced by name and number in some IBM BIOS manuals IBM reports that "there are a number of problems with this call" and does not recommend its use. SeeAlso: AH=C4h --------B-15C7------------------------------- INT 15 - SYSTEM - later PS/2s - RETURN MEMORY-MAP INFORMATION AH = C7h DS:SI -> user supplied memory map table (see below) Note: call AH=C0h and examine bit 4 of feature byte 2 to check if this function is supported Return: CF set on error, clear on success SeeAlso: AH=C0h,AH=C9h,AH=D1h Format of memory-map table structure: Offset Size Description 00h WORD length of table (excluding this word) 02h DWORD local memory between 1M and 16M, in 1K blocks 06h DWORD local memory between 16M and 4G, in 1K blocks 0Ah DWORD system memory between 1M and 16M, in 1K blocks 0Eh DWORD system memory between 16M and 4G, in 1K blocks 12h DWORD cacheable memory between 1M and 16M, in 1K blocks 16h DWORD cacheable memory between 16M and 4G, in 1K blocks 1Ah DWORD 1K blocks before start of non-system memory between 1M and 16M 1Eh DWORD 1K blocks before start of non-system memory between 16M and 4G 22h 2 DWORDs reserved --------B-15C8------------------------------- INT 15 - SYSTEM - ENABLE/DISABLE PROCESSOR FUNCTIONS AH = C8h AL = function 00h disable cache or (90 and 95) disable cache L1 01h enable cache or (90 and 95) enable cache L1 ---models 90 and 95 only--- 02h disable cache L2 03h enable cache L2 04h disable both caches 05h enable both caches 06h return status of both caches 07h-FFh Reserved Return: CF set on error CF clear if successful AH = status 00h operation successful 01h function choice (in AL) is invalid 02h NVRAM data is invalid 03h cache test error 04h (90 and 95 only) cannot perform operation requested due to state of other cache (see note below) 05h no L2 cache is present For subfunction 06h only: BH = status of cache L2 00h enabled 01h disabled or not installed BL = status of cache L1 (same codes as BH) Notes: supported by at least PS/2 70, 70/486, 80-A21, 90, 95 call AH=C0h and examine bit 3 of feature byte 2 to check if this function is supported. on a 486 system, any external caches must be disabled when the on-chip cache (L1) is disabled. SeeAlso: AH=C0h --------B-15C9------------------------------- INT 15 - newer PS/2; various BIOSes - GET CPU TYPE AND MASK REVISION AH = C9h AL = 10h (may be required on some non-PS BIOSes) Return: CF clear if successful AH = 00h CH = CPU type 03h 80386DX or clone 04h 80486 23h 80386SX or clone CL = mask revision (stepping level) 80386: 03h B1 05h D0 08h D1/D2/E1 80386SX 08h D1 CF set on error AH = status (80h,86h = function not supported) Notes: the BIOS must save DX at startup in order to be able to support this call; PS/2 Models 56, 57, 90, and 95 are known to support it the PS/2 BIOS merely reads CMOS locations 190h (type) and 191h (rev) --------B-15CA------------------------------- INT 15 U - PS/2 Model 95 - RESERVED AH = CAh ??? Return: ??? --------B-15CB------------------------------- INT 15 U - PS/2 Model 95 - RESERVED AH = CBh ??? Return: ??? --------B-15CC------------------------------- INT 15 U - PS/2 Model 95 - RESERVED AH = CCh ??? Return: ??? --------B-15CD------------------------------- INT 15 U - PS/2 Model 95 - RESERVED AH = CDh ??? Return: ??? --------B-15CE--BL00------------------------- INT 15 - later PS/2s - ALLOCATE DMA ARBITRATION LEVEL AH = CEh BL = 00h-0Eh arbitration level to be allocated 0Fh-FFh reserved AL = option byte bit 7-1: reserved (0) bit 0: 0 = need DMA channel for arbitration level requested 1 = no channel required for arbitration level Return: CF set on error AH = status (80h,86h = function not supported) CF clear on success AL = channel number 00h-07h channel number allocated for the arbiration level 08h-FEh reserved FFh no channel requested for arbitration level AH = status 00h success 01h arbitration level not available 02h channel not available 03h invalid arbitration level passed Notes: arbitration level 00h has the highest priority, 0Eh the lowest to perform a DMA transfer operation, be sure to call this function first, and call AH=CFh afterward. Failure to use this function can cause unpredictable results. SeeAlso: AH=CFh --------B-15CF------------------------------- INT 15 - later PS/2s - DEALLOCATE DMA ARBITRATION LEVEL AH = CFh BL = arbitration level to be deallocated (see AH=CEh) Return: CF set on error AH = status (80h,86h = function not supported) CF clear on success AH = status 00h success 04h arbitration level not allocated SeeAlso: AH=CEh --------B-15D0------------------------------- INT 15 - later PS/2s - RESERVED AH = D0h ??? Return: ??? --------B-15D100DX0000----------------------- INT 15 - later PS/2s - GET NUMBER OF DEVICE DESCRIPTOR TABLE (DDT) ENTRIES AX = D100h DX = 0000h (reserved, must set to 0) Return: BL = size of one DDT entry, in bytes CX = number of DDT entries AH = return code 00h success 01h requested DDT entry not found 02h DDT data not valid 86h function not supported CF set on error CF clear on success SeeAlso: AH=C0h,AH=C7h,AH=C9h,AX=D101h,AX=D102h,AX=D103h,AX=D104h --------B-15D101----------------------------- INT 15 - later PS/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY NUMBER AX = D101h BX = number of requested entry (starting with 1) DX = 0000h (reserved, must be set to 0) ES:DI -> buffer to contain DDT entry (see below) Return: ES:DI -> buffer containing DDT entry AH = return code 00h = Success 01h = Requested DDT entry not found 02h = DDT data not valid 86h = function not supported CF set on error CF clear on success SeeAlso: AH=C0h,AH=C7h,AH=C9h,AX=D100h,AX=D102h,AX=D104h Format of DDT: Offset Size Description 00h BYTE bits 7-4: reserved (set to 0) bits 3-0: slot of device (0 = system board) 01h BYTE bits 7-4: second interrupt for this device (0 = none) bits 3-0: first interrupt for this device (0 = none) 02h BYTE bits 7-4: second arbitration level for this device bits 3-0: first arbitration level for this device 03h WORD DDT indicators (see below) 05h BYTE reserved (0) 06h WORD device ID (0 = none) 08h WORD starting address of first I/O block (0 = none) 0Ah WORD starting address of second I/O block (0 = none) OCh WORD starting address of third I/O block (0 = none) OEh DWORD start of first non-system memory block (0 = none) 12h WORD size of first non-system memory block (in kilobytes) 14h DWORD start of second non-system memory block (0 = none) 18h WORD size of second non-system memory block (in kilobytes) 1Ah BYTE implementation identifier of the device 1Bh BYTE implementation revision level of the device Note: I/O block addresses and non-system memory addresses are listed in ascending order in each DDT entry. Bitfields for DDT indicators: bit 15 reserved (0) bit 14 second arbitration level exists bit 13 first arbitration level exists bit 12 serial interface is RS-422 bit 11 not address limited bit 10 DMA channel used bit 9 second arbitration level can be shared bit 8 first arbitration level can be shared bits 7-0 reserved (0) --------B-15D102----------------------------- INT 15 - later PS/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY I/O ADDRSS AX = D102h BX = entry number at which to start searching CX = requested I/O port address DX = 0000h (reserved, must be set to 0) ES:DI -> buffer to contain DDT entry (see AX=D101h) Return: BX = DDT entry number where I/O port was found, or total entries plus 1 if port was not found. ES:DI -> buffer containing DDT entry (see AX=D101h for format) AH = return code 00h success 01h requested DDT entry not found 02h DDT data not valid 86h function not supported CF set on error CF clear on success Desc: the DDT is searched from the specified entry for the I/O port in CX, and the first entry in which it is found is returned SeeAlso: AH=C0h,AH=C7h,AH=C9h,AX=D100h,AX=D101h,AX=D103h,AX=D104h --------B-15D103DX0000----------------------- INT 15 - later PS/2s - RETURN ENTIRE DDT AX = D103h DX = 0000h (reserved, must be set to 0) ES:DI -> buffer to contain DDT entry Return: ES:DI -> buffer containing DDT entry (see AX=D101h for format) AH = return code 00h success 01h requested DDT entry not found 02h DDT data not valid 86h function not supported CF set on error CF clear on success SeeAlso: AH=C0h,AH=C7h,AH=C9h,AX=D100h,AX=D104h --------B-15D104----------------------------- INT 15 - later PS/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY DEVICE ID AX = D104h BX = entry number at which to start searching CX = requested device ID DX = 0000h (reserved, must be set to 0) ES:DI -> buffer to contain DDT entry Return: BX = DDT entry number where device ID was found, or total entries plus 1 if port was not found. ES:DI -> buffer containing DDT entry (see AX=D101h for format) AH = return code 00h success 01h requested DDT entry not found 02h DDT data not valid 86h function not supported CF set on error CF clear on success Desc: the DDT is searched from the specified entry for the device ID in CX, and the first entry in which it is found is returned. SeeAlso: AH=C0h,AH=C7h,AH=C9h,AX=D100h,AX=D101h,AX=D103h --------B-15D2------------------------------- INT 15 - later PS/2s - RESERVED AH = D2h ??? Return: ??? --------B-15D3------------------------------- INT 15 - later PS/2s - RESERVED AH = D3h ??? Return: ??? --------B-15D4------------------------------- INT 15 - later PS/2s - GET PHYSICAL FIXED DISK DRIVE NUMBER (SELECTABLE BOOT) AH = D4h DL = logical fixed disk drive number Return: AL = physical fixed disk drive number AH = return code 00h success 01h specified logical drive number is invalid 86h function not supported 80h function not supported (on PCjr and PC) CF set on error CF clear on success --------B-15D5------------------------------- INT 15 - later PS/2s - RESERVED AH = D5h ??? Return: ??? --------B-15D600BL00------------------------- INT 15 - later PS/2s - READ BOOT DEVICE ID AX = D600h BL = 00h DX = device ID Return: CF clear if successful AH = 00h CF set on error AH = status (86h for function not supported) SeeAlso: AX=D600h/BL=01h,AX=D601h/BL=00h,AX=D602h --------B-15D600BL01------------------------- INT 15 - later PS/2s - WRITE BOOT DEVICE ID AX = D600h BL = 01h DX = device ID Return: CF clear on success AH = 00h CF set on error AH = status (86h for function not supported) SeeAlso: AX=D600h/BL=00h,AX=D601h/BL=01h --------B-15D601BL00------------------------- INT 15 - later PS/2s - READ BOOT DEVICE KEY AX = D601h BL = 00h DX = device ID Return: CF clear on success AH = 00h CF set on error AH = status (86h for function not supported) SeeAlso: AX=D600h/BL=00h,AX=D601h/BL=01h,AX=D602h --------B-15D601BL01------------------------- INT 15 - later PS/2s - WRITE BOOT DEVICE KEY AX = D601h BL = 01h DX = device ID Return: CF clear on success AH = 00h CF set on error AH = status (86h for function not supported) SeeAlso: AX=D600h/BL=01h,AX=D601h/BL=00h --------B-15D602----------------------------- INT 15 - later PS/2s - QUERY BOOT REFERENCE PARTITION AX = D602h Return: CF clear on success AH = 00h AL = status of reference-partition boot request 00h boot not requested 01h boot requested CF set on error AH = status (86h for function not supported) SeeAlso: AX=D601h/BL=00h --------B-15D800----------------------------- INT 15 - EISA SYSTEM ROM - READ SLOT CONFIGURATION INFORMATION AX = D800h CL = slot number (including embedded and virtual) Return: CF clear if successful AH = 00h CF set on error AH = error code 80h invalid slot number 82h EISA CMOS corrupt 83h empty slot 86h invalid BIOS-FW function call 87h invalid system configuration AL bit flags bit 7: set if duplicate IDs bit 6: set if product ID readable bits 4,5: slot type (00=expansion, 01=embedded, 10=virtual device) bits 0-3: duplicate ID number if bit 7 set BH = major revision level of configuration utility BL = minor revision level of configuration utility CX = checksum of configuration file DH = number of device functions DL = combined function information byte SI:DI = 4-byte compressed ID (DI = bytes 0&1, SI = bytes 2&3) Note: call with AL=80h if using 32-bit CS addressing mode instead of 16-bit SeeAlso: AX=D801h,AX=D804h --------B-15D801----------------------------- INT 15 - EISA SYSTEM ROM - READ FUNCTION CONFIGURATION INFORMATION AX = D801h CH = function number to read CL = slot number (including embedded and virtual) DS:SI -> 320-byte buffer for standard configuration data block Return: CF clear if successful AH = 00h DS:SI buffer filled CF set on error AH = error code 80h invalid slot number 81h invalid function number 82h EISA CMOS corrupt 83h empty slot 86h invalid BIOS-FW function call 87h invalid system configuration BX destroyed Note: call with AL=81h if using 32-bit CS addressing mode instead of 16-bit --------B-15D802----------------------------- INT 15 - EISA SYSTEM ROM - CLEAR NONVOLATILE MEMORY (EISA CMOS) AX = D802h BH = EISA config utility major revision level BL = EISA config utility minor revision level Return: CF clear if successful AH = 00h CF set on error AH = error code 84h error clearing CMOS 86h invalid BIOS-FW function call 88h config utility version not supported Note: call with AL=82h if using 32-bit CS addressing mode instead of 16-bit SeeAlso: AX=D803h --------B-15D803----------------------------- INT 15 - EISA SYSTEM ROM - WRITE NONVOLATILE MEMORY AX = D803h CX = length of data structure (0000h = empty slot) includes two bytes for config file checksum DS:SI -> configuration data Return: CF clear if successful AH = 00h CF set on error AH = error code 84h error clearing CMOS 85h EISA CMOS is full 86h invalid BIOS-FW function call Note: call with AL=83h if using 32-bit CS addressing mode instead of 16-bit SeeAlso: AX=D802h --------B-15D804----------------------------- INT 15 - EISA SYSTEM ROM - READ PHYSICAL SLOT AX = D804h CL = slot number (including embedded and virtual) Return: CF clear if successful AH = 00h CF set on error AH = error code 80h invalid slot number 83h empty slot 86h invalid BIOS-FW function call SI:DI = 4-byte compressed ID (DI = bytes 0&1, SI = bytes 2&3) Note: call with AL=84h if using 32-bit CS addressing mode instead of 16-bit SeeAlso: AX=D800h --------B-15D8------------------------------- INT 15 - EISA SYSTEM ROM - 32-bit CS ADDRESSING MODE CALLS AH = D8h AL = 80h to 84h other registers as appropriate for AL=00h to 04h Return: as appropriate for AL=00h to 04h Note: these functions are identical to AX=D800h to D804h, except that they should be called when using 32-bit CS addressing mode (pointers use ESI rather than SI as offset) instead of 16-bit addressing mode SeeAlso: AX=D800h,AX=D801h,AX=D802h,AX=D803h,AX=D804h --------Q-15DE00----------------------------- INT 15 - DESQview - GET PROGRAM NAME AX = DE00h Return: AX = offset into DESQVIEW.DVO of program most recently selected from the "Switch Windows" menu (see below) Note: always returns AX=0000h under DESQview/X SeeAlso: AX=DE07h Format of program entry in DESQVIEW.DVO: Offset Size Description 00h BYTE length of name (FFh if end of file) 01h N BYTEs name 2 BYTEs keys to invoke program (second = 00h if only one key used) BYTE program type 00h normal program 04h divider 80h Delete a Program 81h Change a Program WORD ??? apparently always 0000h --------Q-15DE01----------------------------- INT 15 - DESQview - UPDATE "OPEN WINDOW" MENU AX = DE01h Return: nothing Notes: reads DESQVIEW.DVO, disables Open menu if file not in current directory NOP for DESQview/X --------Q-15DE02----------------------------- INT 15 - DESQview 1.x only - SET ??? FLAG FOR CURRENT WINDOW AX = DE02h Return: nothing Note: this call is a NOP in DV 2.x SeeAlso: AX=DE03h --------Q-15DE03----------------------------- INT 15 - DESQview 1.x only - GET ??? FOR CURRENT WINDOW AX = DE03h Return: AX = ??? for current window BX = ??? for current window Note: this call is a NOP in DV 2.x SeeAlso: AX=DE02h --------Q-15DE04----------------------------- INT 15 - DESQview - GET AVAILABLE COMMON MEMORY AX = DE04h Return: BX = bytes of common memory available CX = largest block available DX = total common memory in bytes SeeAlso: AX=DE05h,AX=DE06h --------Q-15DE05----------------------------- INT 15 - DESQview - GET AVAILABLE CONVENTIONAL MEMORY AX = DE05h Return: BX = K of memory available CX = largest block available DX = total conventional memory in K SeeAlso: AX=DE04h,AX=DE06h --------Q-15DE06----------------------------- INT 15 - DESQview - GET AVAILABLE EXPANDED MEMORY AX = DE06h Return: BX = K of expanded memory available CX = largest block available DX = total expanded memory in K SeeAlso: AX=DE04h,AX=DE05h --------Q-15DE07----------------------------- INT 15 - DESQview - "APPNUM" - GET CURRENT PROGRAM'S NUMBER AX = DE07h Return: AX = number of program as it appears on the "Switch Windows" menu Note: this API call may be made from a hardware interrupt handler SeeAlso: AX=DE00h --------Q-15DE08----------------------------- INT 15 - DESQview - GET ??? AX = DE08h Return: AX = 0000h if ??? is not set to the current task 0001h if ??? is set to the current task --------Q-15DE09----------------------------- INT 15 - DESQview - UNIMPLEMENTED AX = DE09h Return: nothing (NOP in DV 1.x and 2.x) --------Q-15DE0A----------------------------- INT 15 - DESQview v2.00+ - "DBGPOKE" - DISPLAY CHARACTER ON STATUS LINE AX = DE0Ah BL = character Return: character displayed, next call will display in next position (which wraps back to the start of the line if off the right edge of screen) Notes: displays character on bottom line of *physical* screen, regardless of current size of window (even entirely hidden) does not know about graphics display modes, just pokes the characters into display memory this API call may be made from a hardware interrupt handler SeeAlso: AX=1003h --------Q-15DE0B----------------------------- INT 15 - DESQview v2.00+ - "APILEVEL" - DEFINE MINIMUM API LEVEL REQUIRED AX = DE0Bh BL = API level minor version number BH = API level major version number Return: AX = maximum API level (AH = major, AL = minor) Notes: if the requested API level is greater than the version of DESQview, a "You need a newer version" error window is popped up the API level defaults to 1.00, and is inherited by child tasks --------Q-15DE0C----------------------------- INT 15 - DESQview v2.00+ - "GETMEM" - ALLOCATE "SYSTEM" MEMORY AX = DE0Ch BX = number of bytes Return: ES:DI -> allocated block or 0000h:0000h (DV 2.26+) Note: use SETERROR (AX=DE15h) to avoid a user prompt if there is insufficient system memory SeeAlso: AX=1001h,AX=102Eh,AX=DE0Dh,AX=DE15h,AX=DE19h --------Q-15DE0D----------------------------- INT 15 - DESQview v2.00+ - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY AX = DE0Dh ES:DI -> previously allocated block Return: nothing SeeAlso: AX=1002h,AX=DE0Ch --------Q-15DE0E----------------------------- INT 15 - DESQview v2.00+ - "FINDMAIL" - FIND MAILBOX BY NAME AX = DE0Eh ES:DI -> name to find CX = length of name Return: BX = 0000h not found 0001h found DS:SI = object handle SeeAlso: AH=12h/BH=11h,AH=12h/BX=1200h"GETNAME" Special mailbox names: "COM1" ... "COM4" RBcomm using COM1 ... COM4 "DESQview/X Help Engine" "DESQview/X Network Server" Network Manager "DESQview X Server0" X-Windows server "DESQview X Server7" X-Windows printing service "INBOX" DESQview/X LPD requests "OUTBOX" DESQview/X LPD responses "WAITBOX" semaphore to synchronize DESQview/X LPD communications "_DVNM_" DV/X v1.10 network manager --------Q-15DE0F----------------------------- INT 15 - DESQview v2.00+ - ENABLE DESQview EXTENSIONS AX = DE0Fh Return: AX and BX destroyed (seems to be bug, weren't saved&restored) Notes: sends a manager stream with opcodes AEh, BDh, and BFh to task's window enables an additional mouse mode --------Q-15DE10----------------------------- INT 15 - DESQview v2.00+ - "PUSHKEY" - PUT KEY INTO KEYBOARD INPUT STREAM AX = DE10h BH = scan code BL = character Return: nothing Notes: a later read will get the keystroke as if it had been typed by the user multiple pushes are read last-in first-out if a script exists for the pushed key in the current application, the script will be executed early copies of DV 2.00 destroy AX, BX, ES, and DI SeeAlso: INT 16/AH=05h --------Q-15DE11BL00------------------------- INT 15 - DESQview v2.00+ - "JUSTIFY" - EN/DISABLE AUTOM. WINDOW JUSTIFICATION AX = DE11h BL = 00h viewport will not move automatically nonzero viewport will move to keep cursor visible (default) Return: nothing --------Q-15DE12BX0000----------------------- INT 15 - DESQview v2.01+ - "CSTYLE" - SET "C"-COMPATIBLE CONTROL CHAR INTERPRET AX = DE12h BX = 0000h select normal style (linefeed only moves down) nonzero select C style (linefeed moves to start of next line) Return: nothing Note: set on a per-task basis, and inherited from the parent task --------Q-15DE13----------------------------- INT 15 - DESQview v2.20+ - "GETCRIT" - GET CRITICAL NESTING COUNT AX = DE13h Return: BX = number of calls to BEGINC or ENTERC (see INT 15/AX=101Bh,DE1Ch) without matching ENDC (see INT 15/AX=101Ch) Note: this API call may be made from within a hardware interrupt handler SeeAlso: AX=101Bh,AX=101Ch,AX=DE1Bh,AX=DE1Ch --------Q-15DE14----------------------------- INT 15 - DESQview v2.20+ - GET OBJECT TYPE AX = DE14h ES:DI -> object Return: BL = 00h not an object 08h window or task 09h mailbox 0Ah keyboard 0Bh timer 0Ch objectq 0Fh pointer 10h panel SeeAlso: AX=1016h --------Q-15DE15----------------------------- INT 15 - DESQview v2.20+ - SET ERROR HANDLING AX = DE15h BL = error handling mode 00h post system error on all error conditions 01h return carry flag set on calls to ADDTO, SUBFROM, and WRITE messages sent to mailboxes which fail due to lack of system or common memory 02h (v2.26+) same as 01h, but also return null pointer for GETMEM calls which fail due to lack of system memory Return: nothing SeeAlso: AX=DE0Ch,AX=DE16h --------Q-15DE16----------------------------- INT 15 - DESQview v2.20+ - GET ERROR HANDLING AX = DE16h Return: BL = current mode 00h always post system error 01h return carry flag set on failed mailbox writes 02h return CF set on failed mailbox writes and NULL on failed GETMEM calls SeeAlso: AX=DE15h --------Q-15DE17----------------------------- INT 15 - DESQview v2.20-2.25 - reserved AX = DE17h Return: pops up "Programming error" window Note: AX = 1117h is NOT identical to this call under DESQview 2.20 thru 2.25 SeeAlso: AX=1117h --------Q-15DE17----------------------------- INT 15 - DESQview v2.26+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT AX = DE17h BX = function 0000h get current mapping context without setting nonzero set new mapping context to BX Return: BX = mapping context in effect before call Notes: mapping contexts determine conventional-memory addressability; setting a mapping context ensures that the associated program and data areas are in memory for access. Usable by drivers, TSRs and shared programs. caller need not be running under DESQview this API call may be made from a hardware interrupt handler SeeAlso: AX=1016h,AX=1117h,AX=DE21h,INT 2F/AX=1685h --------Q-15DE18----------------------------- INT 15 - DESQview v2.20+ - internal - ??? AX = DE18h BP = function number high byte must be 10h low byte is function 00h set ??? BL = ??? (00h-10h, video mode???) BH = value to store 03h set ??? BL = ??? (stored in driver) 0Ah get ??? ES:DI -> 18-byte buffer to hold ??? Note: calls video driver (NOP for Hercules driver,probably CGA and MCGA also) --------Q-15DE19----------------------------- INT 15 - DESQview v2.23+ - "GETCOMMON" - ALLOCATE "COMMON" MEMORY AX = DE19h BX = number of bytes to allocate Return: AX = 0000h successful ES:DI -> allocated block nonzero insufficient memory Note: this API call may be made from within a hardware interrupt handler SeeAlso: AX=DE0Ch,AX=DE15h,AX=DE1Ah --------Q-15DE1A----------------------------- INT 15 - DESQview v2.23+ - "PUTCOMMON" - DEALLOCATE "COMMON" MEMORY AX = DE1Ah DS:SI -> previously allocated block Note: this function may be called from within a hardware interrupt handler SeeAlso: AX=DE0Dh,AX=DE19h --------Q-15DE1B----------------------------- INT 15 - DESQview v2.23+ internal - DECREMENT CRITICAL NESTING COUNT AX = DE1Bh Return: nothing SeeAlso: AX=101Ch,AX=DE13h,AX=DE1Ch --------Q-15DE1C----------------------------- INT 15 - DESQview v2.23+ - "ENTERC" - INCREMENT CRITICAL NESTING COUNT AX = DE1Ch Return: nothing Notes: similar to AX=101Bh, but begins the critical region without ensuring that DOS is free the official documentation states that this call should be paired with "ENDC" (AX=101Ch); no mention is made of AX=DE1Bh this API call may be made from within a hardware interrupt handler SeeAlso: AX=101Bh,AX=101Ch,AX=DE13h,AX=DE1Bh --------Q-15DE1D----------------------------- INT 15 - DESQview v2.23+ - "PUTKEY" - FAKE USER KEYSTROKES AX = DE1Dh DX = segment of handle for task to receive keystroke BL = character BH = scan code Return: AX = 0000h if successful nonzero if receiver's keyboard buffer was full Notes: the key is treated as though the user had pressed it, ignoring any script which may be bound to the key, and using the current field table if the keyboard object is in field processing mode multiple PUTKEYs are seen in the order in which they are executed SeeAlso: AX=DE10h --------Q-15DE1E----------------------------- INT 15 - DESQview v2.23+ - "SCRNINFO" - GET TRUE VIDEO PARAMETERS AX = DE1Eh Return: CL = actual number of rows on screen CH = actual number of columns on screen BL = actual video mode (may differ from INT 10/AH=0Fh return) (v2.26+) Note: this API call may be made from a hardware interrupt handler SeeAlso: INT 10/AH=0Fh --------Q-15DE1F----------------------------- INT 15 - DESQview v2.23+ - "DOSUSER" - GET HANDLE OF TASK CURRENTLY USING DOS AX = DE1Fh Return: BX = segment of task handle or 0000h if no tasks are using DOS Note: this API call may be made from within a hardware interrupt handler SeeAlso: AX=DE13h,INT 21/AH=34h --------Q-15DE20----------------------------- INT 15 - DESQview v2.26+ - "DISPATCHINT" - INTERRUPT ANOTHER TASK AX = DE20h BX = segment of handle of task to interupt DX:CX -> FAR interrupt routine BP,SI,DI,DS,ES as required by interrupt routine Return: nothing Notes: unlike "PGMINT" (AX=1021h), DISPATCHINT may be applied to the task making the DISPATCHINT call multiple "DISPATCHINT" calls are processed in the order in which they were executed the FAR routine is entered with the current ES, DS, SI, DI, and BP values, using the task's internal stack (see AX=101Ah); only SS:SP needs to be preserved this API call may be made from within a hardware interrupt handler SeeAlso: AX=1021h,AX=DE2Ah --------Q-15DE21----------------------------- INT 15 - DESQview v2.26+ - "ASSERTVIR" - CONTROL 386 SCREEN VIRTUALIZATION AX = DE21h BX = new state 0000h turn off nonzero turn on Return: BX = old state of virtualization Notes: this API call may be made from within a hardware interrupt handler under DV 2.40 and 2.42, this call appears to have no effect and always returns a nonzero value in BX which appears to be the offset within the DV common memory segment of the caller's task object; it may only have an effect within a hardware interrupt handler SeeAlso: AX=1117h,AX=DE17h --------Q-15DE22----------------------------- INT 15 - DESQview v2.26+ - "PROCESSMEM" - GET TASK MEMORY STATUS AX = DE22h DX = segment of task handle Return: DX = total amount of memory in paragraphs BX = amount of system memory in paragraphs CX = largest block of system memory available in paragraphs AX = flags bit 0: system memory resides in shared memory bit 1: process's memory is swapped out bit 2: process's system memory is swapped out Notes: if the task handle is a child task, the returned values will be for the process containing the task, rather than the task itself if the process's system memory is swapped out, BX,CX,DX remain unchanged, because the memory usage cannot be determined SeeAlso: AX=DE04h,AX=DE05h,AX=DE06h --------Q-15DE23----------------------------- INT 15 U - DESQview v2.31+ - ??? AX = DE23h BX = ??? IRQ number on first PIC? CX = ??? IRQ number on second PIC? Return: ??? Note: called by QEMM 6.00+ --------Q-15DE24----------------------------- INT 15 - DESQview v2.40+ - "XNEWPROC" - START NEW APPLICATION AX = DE24h BX = length of .DVP data CX = length of ??? string DS:SI -> ??? string ES:DI -> .DVP data (see AX=102Ch) Return: BX = segment of task handle??? or 0000h on error Note: this call is similar to AX=102Ch except that it can interpret the extended DVP data SeeAlso: AX=102Ch --------Q-15DE25----------------------------- INT 15 - DESQview v2.40+ - "GETDVPATH" - GET DESQview DIRECTORY AX = DE25h ES:DI -> 67-byte buffer for ASCIZ directory name Return: ES:DI buffer filled with directory from which DESQview was started BUG: DV 2.42 does not place a terminating NUL at the end of the directory name, so if the buffer is not cleared to zeros before the call, there is no way to tell where the directory name ends. This bug has been fixed in DV 2.52 (DV/X 1.02) SeeAlso: AX=DE2Eh,INT 21/AH=47h --------Q-15DE26----------------------------- INT 15 - DESQview v2.40+ - "GETFOREGROUND" - GET KEYBOARD FOCUS AX = DE26h Return: BX = segment of handle for task with keyboard focus Note: under DESQview/X, the X server always has the keyboard focus unless a "direct" window is active SeeAlso: AX=DE2Fh,INT 2F/AX=DE0Ah --------Q-15DE27----------------------------- INT 15 - DESQview v2.50+ - "ADDINSTANCEDATA" - ADD PER-TASK SAVE/RESTORE AREA AX = DE27h BX = type 0000h process 0001h task ES:DI -> list of Instance Item Structures (see below) Return: CF clear if successful AX = ??? BX = ??? CF set on error AX = error code??? 0004h invalid BX value Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. SeeAlso: INT 2F/AX=DE08h,INT 2F/AX=DE09h Format of Instance Item Structure [one element of list]: Offset Size Description 00h WORD length of data area DESQview should save and restore on context switches (0000h = end of list) 02h DWORD pointer to area to be saved/restored --------Q-15DE28----------------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE28h BX = segment of ??? or 0000h for default ??? Return: ??? Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. SeeAlso: AX=DE2Ah --------Q-15DE29BX0000----------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE29h BX = 0000h ??? Return: CF clear if successful ??? CF set on error Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. --------Q-15DE29BX0001----------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE29h BX = 0001h DX = segment of window handle Return: CF clear if successful AX = ??? DX = ??? CF set on error Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. --------Q-15DE29BX0002----------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE29h BX = 0002h DX = segment of window handle Return: CF clear if successful AX = ??? DX = ??? CF set on error Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. --------Q-15DE29BX0003----------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE29h BX = 0003h DX = segment of window handle Return: CF clear if successful ??? CF set on error Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. --------Q-15DE29BX0004----------------------- INT 15 U - DESQview v2.50+ - GET DISPLAY NAME AX = DE29h BX = 0004h CX = size of buffer in bytes DX = segment of window handle ES:DI -> buffer for display name Return: CF clear if successful buffer filled with ASCIZ display name (truncated if necessary) or null string if no display CF set on error Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. the name ":0" refers to the local display --------Q-15DE29BX0005----------------------- INT 15 U - DESQview v2.50+ - ??? AX = DE29h BX = 0005h ??? Return: CF clear if successful ??? CF set on error Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. --------Q-15DE2A----------------------------- INT 15 - DESQview v2.50+ - "DISPATCHINTAFTERDOS" - INTERRUPT ANOTHER TASK AX = DE2Ah BX = segment of handle for task to interrupt or 0000h for caller DX:CX -> interrupt routine BP,SI,DI,DS,ES as required by interrupt routine Return: nothing Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. this call is the same as AX=DE20h except that it will delay interrupting the specified task until after it has exited DOS SeeAlso: AX=1021h,AX=DE20h --------Q-15DE2B----------------------------- INT 15 - DESQview v2.50+ - "OBJNEXT" - TRAVERSE OBJECT LIST AX = DE2Bh ES:DI -> starting object 0000h:0000h for first object in list??? Return: AX = status 0000h successful ES:DI -> next object of same type (window/non-window) 0001h failed (ES:DI was not a valid handle) Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. there are two separate lists, one for window/task objects and one for all other objects SeeAlso: AX=1016h,AX=DE2Ah,AX=DE2Ch --------Q-15DE2C----------------------------- INT 15 - DESQview v2.50+ - "WININFO" - GET WINDOW INFORMATION AX = DE2Ch DX = window information format version (0100h for DESQview 2.5x) BX = segment of window handle or 0000h for default ES:DI -> buffer for window information (see below) Return: AX = status 0000h successful Note: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. SeeAlso: AX=1000h,AX=1016h,AX=DE01h,AX=DE2Bh Format of window information: Offset Size Description 00h BYTE task flag: 00h window, 01h task 01h BYTE process number if owner task 00h if non-owner task 02h WORD segment of owner's handle, 0000h if orphaned 04h WORD mapping context (see AX=1016h) 06h BYTE task status (see below) 07h BYTE unused 08h WORD status bits (see below) 0Ah BYTE 01h if foreground-only window Values for task status: 00h "Waiting" waiting for input 01h "Idle" keyboard poll limit reached 03h same as 01h 04h "Pausing" INT 15/AX=1000h pause called 04h DV/X direct: user did something to allow task switch 05h "ModeChg" video mode about to be changed 06h "ModeNtf" notify that video mode changed 07h "MoniCh" requested change to other monitor 08h "StartPgm" control relinquished to start new process 09h "MgrCan" made window manager CANCEL command 0Ah "Slicing" time slice expired 0Bh "Exit DOS" notify on DOS calls 0Ch "Enter DOS" process is re-entering DOS 0Dh "Terminate" INT 21/AH=4Ch or task freed 0Eh "BrkNxt" Control-Break pressed 0Fh "MgrCol" keyboard focus taken away 10h "PgmInt" interrupted by API call from another task 11h "BldOpen" call to INT 15/AX=DE01h Bitfields for status bits: bit 0 DESQview process bit 1 process swapped out bit 2 process is resized direct window (suspended) bit 3 process suspended itself bit 4 user suspended process bit 5 process is being created bit 6 task is freeing another task --------Q-15DE2D----------------------------- INT 15 U - DESQview v2.50+ - GET/SET SOCKET HANDLER AX = DE2Dh CX = direction FFFFh set socket handler DX:BX -> FAR function for socket interface must be of the format described under INT 63"DESQview" other get socket handler Return: DX:BX -> socket handler Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. the "set" subfunction is normally called only by SOCKET.DVR SeeAlso: AX=DE2Eh,INT 63"DESQview" --------Q-15DE2E----------------------------- INT 15 U - DESQview v2.50+ - SOCKET API AX = DE2Eh DX:BX -> socket record or 0000h:0000h to create a new socket record Return: CX = size of socket record in bytes DX:BX -> socket record which was used Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. socket records are allocated from common memory for Unix compatibility, each socket and connection on a socket is allocated a DOS file handle (referencing an SFT for NUL) which is used on various calls to specify which of possibly multiple connections is to be operated upon SeeAlso: AX=DE2Dh,INT 61/AX=0001h"VINES",INT 63"DESQview" Format of socket record: Offset Size Description 00h WORD signature F0ADh 02h WORD function number 0000h initialize socket??? 0001h "gethostname" 0002h "ioctl" check for input 0003h "sleep" delay for specified period 0004h "htons" convert word to network (big-endian) byte order 0005h "select" 0006h "bsd_close"/"so_close" close socket 0007h NOP 0008h "connect" initiate connection on socket 0009h "recv"/"recvfrom" read from socket 000Ah "socket" 000Bh ??? 000Ch "gethostbyname" 000Dh "send"/"sendto" write to socket 000Eh ??? (does something to all connections for process) 000Fh "getpid" get process identifier 0010h "gettimeofday" 0011h "bind" assign name to socket 0012h "listen" listen for connections on socket 0013h "accept" accept connection on socket 0014h connect to X server 0015h "gethostbyaddr" get host information for an address 0016h "getprotobyname" 0017h "getprotobynumber" 0018h "getservbyname" 0019h "getservbyport" 001Ah "getsockname" determine name bound to socket 001Bh "getpeername" get name of connected peer 001Ch "getsockopt"/"setsockopt" 001Dh "so_exit" close all sockets for calling process 001Eh "issock" determine whether file handle references socket 001Fh "so_attach" reattach previously detached socket 0020h "so_detach" temporarily detach socket 0021h get DESQview directory 0022h "NewProc" start new application (see AX=102Ch) 0023h "so_linkup" 0024h canonicalize filename 0025h indirect INT 15h call 0026h Network Manager interface 0027h "so_unlink" close connection from "so_linkup" 0028h "raisepriority" 0029h "lowerpriority" 002Ah ??? FFFFh "NetExit" (appears to be a NOP) 04h WORD returned error code (see below) 06h WORD maximum message size??? (usually 0400h) 08h WORD PSP segment to use or 0000h if socket not valid 0Ah WORD scratch space (JFT size) 0Ch DWORD scratch space (JFT address) 10h DWORD mailbox handle (initialized by function 0000h) 14h DWORD timer object handle (initialized by function 0000h) ---function 0000h--- 18h WORD (return) ??? ---function 0001h--- 18h WORD (return) status??? 1Ah 128 BYTEs (return) ASCIZ hostname (empty string if not on network) 9Ah WORD maximum length of hostname to return ---function 0002h--- 18h WORD (return) status 1Ah WORD socket's file handle 1Ch WORD IOCTL function 05h "FIONREAD" determine available input 06h "FIONBIO" set blocking state of socket 1Eh WORD (return, subfn 05h) number of bytes available for reading (call, subfn 06h) 0000h blocking, nonzero nonblocking ---function 0003h--- 18h 2 BYTEs unused 1Ah WORD delay time in seconds ---function 0004h--- 18h WORD (return) result in network (big-endian) byte order 1Ah WORD value to convert to network byte order ---function 0005h--- 18h WORD (return) number of handles meeting the specified conditions??? 1Ah WORD number of file handles in each bitset??? 1Ch DWORD bitset of socket handles to check for readability??? 20h DWORD bitset of socket handles to check for writability??? 24h DWORD bitset of socket handles to check for errors??? 28h WORD timeout in ??? or 0000h to block until some socket ready 2Ah DWORD ??? 2Eh DWORD ??? ---function 0006h--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle ---function 0008h--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle 1Ch WORD 0001h if socket name specified, 0000h if not 1Eh WORD length of socket name 20h N BYTEs name of socket to which to connect ---function 0009h--- 18h WORD (return) number of bytes actually read, 0000h if connection closed, or FFFFh on error 1Ah WORD socket's file handle 1Ch WORD number of bytes to read 1Eh WORD flags 20h WORD 0000h if no source address desired 0001h if source address is to be stored (datagram sockets) 22h WORD length of source address 24h 110 BYTEs source address 92h 1K BYTEs buffer for data to be read ---function 000Ah--- 18h WORD (return) socket's file handle or FFFFh on error 1Ah WORD address family (0001h,0002h) 1Ch WORD socket type 1Eh WORD protocol ---function 000Bh--- 18h WORD (return) 0001h if ??? or FFFFh on error 1Ah WORD socket's file handle 1Eh WORD (call) ??? ---function 000Ch--- 18h 128 BYTEs buffer containing ASCIZ hostname special case if empty string or "unix" 98h ??? 'struct hostent' ??? A2h ??? (return) ??? ---function 000Dh--- 18h WORD (return) number of bytes actually written or FFFFh on error 1Ah WORD socket's file handle 1Ch WORD number of bytes to write 1Eh WORD number of bytes to follow in subsequent writes??? 20h WORD flags 22h WORD 0000h if no destination specified, 0001h if destination present 24h WORD ??? 26h WORD length of destination address 28h 110 BYTEs destination address 96h 1K BYTEs buffer containing data to be written ---function 000Eh--- no additional fields ---function 000Fh--- 18h DWORD (return) DESQview task handle of calling process ---function 0010h--- 18h DWORD (return) current time 1Ch DWORD (return) ??? ---function 0011h--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle 1Ch WORD length of name 1Eh N BYTEs buffer for socket name ---function 0012h--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle 1Ch WORD maximum backlog of pending connections allowed on socket ---function 0013h--- 18h WORD (return) file handle for new connection or FFFFh on error 1Ah WORD listen()ing socket's file handle 1Ch WORD (call) length of buffer for connecting entity's address (return) actual length of address 1Eh N BYTEs buffer for connecting entity's address ---function 0014h--- 18h WORD (return) socket's file handle or FFFFh on error 1Ah 4 BYTEs (return) ??? 1Eh WORD (return) ??? 20h WORD (return) ??? 22h 256 BYTEs ASCIZ X display name 122h ??? ---function 0015h--- 18h WORD (call) type of address??? (test for 0001h seen) 1Ah WORD (call) length of buffer for host address 1Ch 110 BYTEs buffer containing host address 8Ah WORD (return) offset of official host name??? 8Ch WORD (return) offset of alias list??? 8Eh WORD (return) address type??? 90h WORD (return) length of an address in bytes??? 92h WORD (return) offset of address??? 9Ah N BYTEs (return) ??? buffer for hostname, alias list, and host address ---function 0016h--- 18h ??? buffer for protocol name??? 98h ??? ---function 0017h--- 18h WORD (call) protocol number??? 1Ah WORD (return) ??? or 0001h ---function 0018h--- 18h 128 BYTEs buffer containing ??? 98h 128 BYTEs buffer containing ??? 118h WORD (return) ??? ---function 0019h--- 18h WORD length of name??? 1Ah 128 BYTEs buffer for name??? 9Ah WORD (return) ??? ---function 001Ah--- 18h WORD (return) 0000h if successful, FFFFh on error 1Ah WORD socket's file handle 1Ch WORD (call) length of buffer for socket name (return) actual length of socket name 1Eh N BYTEs buffer for socket name ---function 001Bh--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle 1Ch WORD (call) size of buffer for name (return) actual size of name 1Eh N BYTEs buffer for peer's name ---function 001Ch--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD direction: 0000h to get, 0001h to set 1Ch WORD socket's file handle 1Eh WORD option level 20h WORD option name 22h WORD (call) length of buffer for option value (return) actual length of option value 24h N BYTEs buffer for option value ---function 001Dh--- no additional fields ---function 001Eh--- 18h WORD (return) status: 0000h ??? or 0001h ??? 1Ah WORD file handle which may or may not be a socket ---function 001Fh--- 18h WORD (return) file handle or FFFFh on error 1Ah DWORD (call) pointer to Socket Context Record (see below) of a previously detached socket ---function 0020h--- 18h WORD (return) status: 0000h if successful or FFFFh on error 1Ah WORD socket's file handle 1Ch DWORD (return) pointer to Socket Context Record (see below) for the file handle ---function 0021h--- 18h 64 BYTEs buffer for DESQview startup directory (see AX=DE25h) ---function 0022h--- 18h DWORD (return) task handle of new application 1Ch WORD size of .DVP data 1Eh 129 BYTEs ASCIZ ??? 9Fh N BYTEs .DVP data (see AX=102Ch) ---function 0023h--- 18h WORD (return) ??? or FFFFh on error 1Ah WORD socket's file handle??? ---function 0024h--- 18h WORD (return) DOS error code (see INT 21/AH=59h) 0000h if successful 1Ah 129 BYTEs ASCIZ filename/pathname 11Bh 129 BYTEs ASCIZ canonicalized filename/pathname (see INT 21/AH=60h) ---function 0025h--- 18h WORD value of AX 1Ah WORD value of BX 1Ch WORD (call) value of CX for call if AH value other than 12h (call) number of stack parameters if AH value is 12h (return) returned CX for calls other than INT 15/AH=12h 1Eh WORD value of DX 20h WORD value of DI 22h WORD value of SI 24h WORD value of DS 26h WORD value of ES 28h WORD (return) value of FLAGS after call 2Ah N DWORDs (call) stack parameters for INT 15/AH=12h call (return) stack results from INT 15/AH=12h call ---function 0026h--- 18h WORD (call) subfunction 0004h "so_exit"??? 0005h "gethostbyname" 0006h "gethostname" 0009h "socket" 000Dh "gethostbyaddr" 000Fh "getprotobyname" 0010h get protocol name for protocol number 0011h "getservbyname" 0012h "getservbyport" 0013h "getsockname"??? 0016h ??? 0017h kill Network Manager 0018h "getpeername"??? 0019h ??? (called by socket function 0000h) 001Ah ??? 001Bh "so_linkup" 001Dh get network services 001Fh "getpwuid" 0020h "getpwnam" 0021h "getpwvar" 0022h "crypt" 0023h "so_unlink" 0024h "getlogin" 0028h "sethostent" 0029h "gethostent" 002Ah "soaddhost" 002Bh "soupdatehost" 002Ch "sodeletehost" 002Dh "setservent" 002Eh "getservent" 002Fh "setpwent" 0030h "getpwent" 0031h ??? 0032h ??? 0033h ??? 0034h get IP network number 0035h ??? (pops up Network Manager window) 0037h ??? 0038h get machine name and IP address 0039h ??? (return) status??? 1Ah WORD (call) size of parameter data (return) size of returned data 1Ch N BYTEs (call) parameter data required by call (see below) (return) result data (see below) ---function 0027h--- 18h WORD (return) status: 0000h if successful, FFFFh on error 1Ah WORD socket's file handle ---functions 0028h,0029h--- 18h WORD (call) file handle for which to set priority low/high FFFFh to change calling task's priority ---function 002Ah--- no additional fields Format of Function 0026h/Subfunction 000Fh data: Offset Size Description 00h 8 BYTEs (return) ??? Format of Function 0026h/Subfunction 0010h data: Offset Size Description 00h 2 BYTEs (return) ??? 02h WORD (return) protocol number 04h WORD (call) protocol number for which to get name 06h WORD (return) ??? 08h var (return) ASCIZ protocol name N var (return) ASCIZ protocol name Format of Function 0026h/Subfunction 0011h data: Offset Size Description 00h 8 BYTEs ??? 08h var (return) ASCIZ protocol name var (return) ASCIZ ??? name var (return) ASCIZ ??? name Format of Function 0026h/Subfunction 0012h data: Offset Size Description 00h 8 BYTEs (return) ??? Format of Function 0026h/Subfunction 0013h data: Offset Size Description 00h 116 BYTEs (return) ??? Format of Function 0026h/Subfunction 0016h data: Offset Size Description 00h 4 BYTEs (return) ??? Format of Function 0026h/Subfunction 0018h data: Offset Size Description 00h 116 BYTEs (return) ??? Format of Function 0026h/Subfunction 0019h data: Offset Size Description 00h 4 BYTEs (return) ??? 04h DWORD (return) task handle of ??? Format of Function 0026h/Subfunction 001Ah data: Offset Size Description 00h 38 BYTEs (return) ??? Format of Function 0026h/Subfunction 001Bh data: Offset Size Description 00h 10 BYTEs (return) ??? Format of Function 0026h/Subfunction 001Dh return data [array]: Offset Size Description 00h WORD ??? or FFFFh if end of array 02h 7 BYTEs ??? 09h 27 BYTEs ASCIZ name of service Format of Function 0026h/Subfunction 0024h return data: Offset Size Description 00h var ASCIZ username Format of Function 0026h/Subfunction 0030h data: Offset Size Description 00h WORD (call) UID or 0000h for current user (return) ??? 02h WORD (return) UID 04h 6 BYTEs (return) ??? 0Ah var (return) ASCIZ username var (return) ASCIZ encrypted password var (return) ASCIZ initial ("home") directory Format of Function 0026h/Subfunction 0034h data: Offset Size Description 00h 1-3 BYTEs IP network number of caller's machine (low byte first) Format of Function 0026h/Subfunction 0038h return data: Offset Size Description 00h BYTE ??? 01h 4 BYTEs IP address 05h var ASCIZ machine name ??? Values for error code: 0000h successful 0009h "BADF" bad file handle 000Ch "ENOMEM" out of memory 000Eh "EFAULT" bad address 0016h "EINVAL" invalid argument 0018h "EMFILE" too many open files 0020h "EPIPE" ??? broken pipe 0023h "EWOULDBLOCK" operation cannot be completed at this time 0024h "EINPROGRESS" operation now in progress 0026h "ENOTSOCK" socket invalid 0028h "EMSGSIZE" message too long to send atomically 002Ch "ESOCKTNOSUPPORT" socket type not supported 002Fh "EAFNOSUPPORT" address family not supp. by protocol fam. 0031h "EDOM" argument too large 0038h "EISCONN" socket is already connected 0039h "ENOTCONN" socket is not connected Format of Socket Context Record: Offset Size Description 00h DWORD pointer to next Socket Context Record, 0000h:0000h if last 04h WORD SFT index for socket, 00FFh if not connected, FFFFh if detached 06h WORD PSP segment of owner or 0000h 08h WORD mapping context of owning window (see AX=1016h) 0Ah 2 BYTEs ??? 0Ch WORD address family 0Eh WORD socket type 10h WORD protocol 12h WORD socket state 0001h created 0002h bound 0003h listening??? 0005h connected 14h DWORD timer object handle 18h DWORD object handle (mailbox???) 1Ch DWORD object handle of parent of above object or 0000h:0000h 20h DWORD pointer to ??? or 0000h 24h 6 BYTEs ??? 2Ah WORD file handle for socket or FFFFh 2Ch 2 BYTEs ??? 2Eh WORD nonzero if socket nonblocking ---network connections only--- 30h 2 BYTEs ??? 32h WORD ??? 34h 4 BYTEs (big-endian) IP address of remote 38h 6 BYTEs ??? --------Q-15DE2F----------------------------- INT 15 - DESQview v2.50+ - "VIDEONOTIFY" - HAS DIRECT WINDOW BEEN ACTIVE? AX = DE2Fh Return: BX = status 0001h keyboard focus has been given to a direct window since the last call 0000h if not Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. Quarterdeck states that this call will not be available under future versions of DESQview Classic --------Q-15DE30----------------------------- INT 15 - DESQview v2.50+ - "GETDVXVERSION" - GET DESQview/X VERSION AX = DE30h Return: BX = version (BH=major, BL=minor) or 0000h if not DESQview/X Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x. you must first check the DESQview version to verify that it is 2.50 or greater SeeAlso: INT 21/AH=2Bh/CX=4445h --------Q-15DE31----------------------------- INT 15 - DESQview/X v1.10 - ??? AX = DE31h CX = ??? 0000h ??? nonzero ??? ??? Return: ??? --------b-15E00F----------------------------- INT 15 - Compaq Systempro - MULTIPROCESSOR DISPATCH AX = E00Fh ES:BX -> start of 2nd processor's execution Return: AL = 0Fh successful = 00h failure SeeAlso: AX=E10Eh,AX=E200h --------b-15E10E----------------------------- INT 15 - Compaq Systempro - MULTIPROCESSOR END-OF-DISPATCH AX = E10Eh ES:BX -> start of 2nd processor's execution Return: AL = 0Fh successful (halted) = 00h failure (not halted) SeeAlso: AX=E00Fh,AX=E200h --------b-15E200----------------------------- INT 15 - Compaq Systempro - MULTIPROCESSOR AVAILABLE AX = E200h Return: AX = 8000h if 2nd processor available SeeAlso: AX=E00Fh,AX=E10Eh ----------15E4------------------------------- INT 15 - ??? AH = E4h AL = subfunction 21h, 89h, 8Ah, 8Bh called by 386MAX v6.01 DL = ??? Return: ??? --------m-15F200CX454D----------------------- INT 15 - Tandon memory mapper - Tandon MAPPER HARDWARE INITIALISATION CHECK ??? AX = F200h CX = 454Dh Return: CF clear if hardware already initialised BX = upper RAM areas in use bit 0: C000-C3FF bit 1: C400-C7FF ... bit 11: EC00-EFFF CF set if hardware not initialised yet ---------------------------------------------