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DESQview/QEMM Interrupt List Release 33 Last change 1/3/93 This compilation is Copyright (c) 1989,1990,1991,1992,1993 Ralf Brown --------------------------------------------- This is an excerpt of the full interrupt list, available as INTER33?.*. --------------------------------------------- If you notice any mistakes or omissions, please let me know! It is only with YOUR help that the list can continue to grow at the current rate. Please send all changes to me rather than distributing a modified version of the list. Please read the file INTERRUP.1ST before asking me any questions. You may find that they have already been addressed. Ralf Brown ARPA: ralf@cs.cmu.edu UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf BIT: ralf%cs.cmu.edu@carnegie FIDO: Ralf Brown 1:129/26.1 or post a message to me in the DR_DEBUG echo (I probably won't see it unless you address it to me) CIS: >INTERNET:ralf@cs.cmu.edu I reply to all e-mail submissions and inquiries, but some of my replies bounce because of bad return paths. If you don't get a response from me within a reasonable period of time, send it again with a better return path (starting at harvard or ucbvax for UUCP, from the ARPA Internet for others). --------------------------------------------- See INTERRUP.1ST for the key to system abbreviations and a list of the trademarks mentioned here. --------------------------------------------- DISCLAIMER: THIS MATERIAL IS PROVIDED "AS IS". I verify the information contained in this list to the best of my ability, but I cannot be held responsible for any problems caused by use or misuse of the information, especially for those functions not officially documented. If it is marked "internal" or undocumented, you should check it carefully to make sure it works the same way in your version of the software (and please let me know whether or not it works the same way). Information marked with "???" is known to be incomplete or guesswork. --------------------------------------------- The use of -> instead of = signifies that the indicated register or register pair contains a pointer to the specified item, rather than the item itself. One or more letters may follow the interrupt number; they have the following meanings: U - undocumented function, u - partially documented function, P - available only in protected mode, R - available only in real or V86 mode ----------0A--------------------------------- INT 0A - IRQ2 - LPT2 (PC), VERTICAL RETRACE INTERRUPT (EGA,VGA) Notes: the TOPS and PCnet adapters use this interrupt request line by default DOS 3.2 revectors IRQ2 to a stack-switching routine on ATs and above, the physical data line for IRQ2 is labeled IRQ9 and connects to the slave 8259. The BIOS redirects the interrupt for IRQ9 back here. under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process many VGA boards do not implement the vertical retrace interrupt, including the IBM VGA Adapter where the traces are either cut or removed SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32" ----------0D--------------------------------- INT 0D - IRQ5 - FIXED DISK (PC,XT), LPT2 (AT), reserved (PS/2) Notes: under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process may be masked by setting bit 5 on I/O port 21h SeeAlso: INT 0E"IRQ6",INT 0F"IRQ7",INT 55"DESQview",INT 5D"DoubleDOS" SeeAlso: INT 7D"GO32" ----------1000------------------------------- INT 10 - VIDEO - SET VIDEO MODE AH = 00h AL = mode (see below) Return: AL = video mode flag (Phoenix BIOS) 20h mode > 7 30h modes 0-5 and 7 3Fh mode 6 AL = CRT controller mode byte (Phoenix 386 BIOS v1.10) Note: IBM standard modes do not clear the screen if the high bit of AL is set (EGA or higher only) SeeAlso: AX=0070h,AX=007Eh,AX=10E0h,AX=10F0h,AH=40h,AX=6F05h,AH=FFh"GO32" SeeAlso: INT 33/AX=0028h,INT 5F/AH=00h,INT 62/AX=0001h Values for video mode: text/ text pixel pixel colors disply scrn system grph resol box resoltn pages addr 21h = T 132x60 16 2 B800 Tseng ET4000 chipset = G 80x43 8x8 720x348 mono B000 DESQview 2.x+Hercules [3] 22h = T 132x44 8x8 Tseng Labs EVA = G 80x43 8x8 720x348 mono B800 DESQview 2.x+Hercules [3] Notes: [3] DESQview intercepts calls to change into these two modes (21h is page 0, 22h is page 1) even if there is no Hercules graphics board installed ----------1080--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - SET ??? HANDLER AH = 80h DX = 4456h ('DV') ES:DI -> FAR subroutine to be called on ??? Return: DS = segment of DESQview data structure for video buffer Note: this function is probably meant for internal use only, due to the magic value required in DX the subroutine seems to be called when the DESQview menu is accessed; on entry, AL = 03h or 04h ----------1081--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - GET ??? AH = 81h DX = 4456h ('DV') Return: ES = segment of DESQview data structure for video buffer BYTE ES:[0] = current window number in DV 2.0x Note: this function is probably meant for internal use only, due to the magic value required in DX SeeAlso: AH=82h ----------1082--DX4456----------------------- INT 10 U - VIDEO - DESQview 2.0x only - internal - GET CURRENT WINDOW INFO AH = 82h DX = 4456h ('DV') Return: DS = segment in DESQview for data structure in DV 2.00, BYTE DS:[0] = window number WORD DS:[1] = segment of other data structure WORD DS:[3] = segment of window's object handle ES = segment of DESQview data structure for video buffer AL = current window number AH = ??? BL = direct screen writes 00h program does not do direct writes 01h program does direct writes, so shadow buffer not usable BH = ??? CL = current video mode CH = ??? Note: this function is probably meant for internal use only, due to the magic value required in DX SeeAlso: AH=81h ----------10FE------------------------------ INT 10 - TopView - GET SHADOW BUFFER AH = FEh ES:DI -> assumed video buffer B800h:0000h color text/CGA graphics, B000h:0000h mono text, or A000h:0000h EGA/VGA graphics (RSIS environments only) Return: ES:DI -> actual video buffer for calling process Notes: if no multitasker or RSIS-compliant environment is installed, ES:DI is returned unchanged; RSIS is the Relocated Screen Interface Specification for display pages other than 0, use AH=05h and AH=0Fh to determine whether a particular page exists TopView requires a call to AH=FFh to notify it that the screen has changed; DESQview will check for changes itself until the first call to AH=FFh SeeAlso: AH=05h,AX=5201h,AH=FFh,INT 15/AX=1024h,INT 21/AH=2Bh"DESQview" SeeAlso: INT 21/AH=ECh"DoubleDOS" ----------10FF------------------------------- INT 10 - TopView - UPDATE SCREEN FROM SHADOW BUFFER AH = FFh CX = number of consecutive changed characters ES:DI -> first changed character in shadow buffer Notes: avoid CX=0000h DESQview will discontinue the automatic screen updating initiated by AH=FEh after this call not supported (ignored) by DESQview/X 1.0x SeeAlso: AH=FEh ----------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 ----------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 ----------151002----------------------------- INT 15 - TopView - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY AX = 1002h ES:DI -> previously allocated block Return: block freed SeeAlso: AX=1001h,AX=DE0Dh ----------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 ----------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 ----------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) ----------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 ----------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 ----------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 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 10 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 6 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 3 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 8Ch 6 BYTEs ??? ---task object only 92h 11 BYTEs ??? 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 2 BYTEs ??? 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 ??? FDh BYTE ??? 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 ----------151017----------------------------- INT 15 - TopView - UNIMPLEMENTED IN DV 2.x AX = 1017h Return: pops up "Programming error" window in DV 2.x ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------151020----------------------------- INT 15 - TopView - UNIMPLEMENTED IN DV v2.00+ AX = 1020h Return: pops up "Programming error" window in DV v2.00+ ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 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 bit 2: don't virtualize bit 1: ??? set by DV 2.31 when "Runs in Background" = "D" 185h BYTE keyboard conflict level (0-4 for DV<2.26, 00h-0Fh for DV2.26+) 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 bit 2: virtualize graphics 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 bit 0: (XNEWPROC) use DOS client layer (DOS-to-X) (NEWPROC) inherit DOS client layer usage bit 1: don't display DOS window bit 2: don't display wait message when opening window bits 3-7: unused (0) 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 ----------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 ----------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) ----------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 ----------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 ----------1511DE----------------------------- INT 15 - DESQview - QEXT.SYS - INSTALLATION CHECK AX = 11DEh Return: CF clear if installed AX = segment at which QEXT.SYS is located 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 67/AH=3Fh Call private entry point with: AH = 00h ??? AH = nonzero ??? ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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) ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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" ----------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" ----------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 ----------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" ----------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" ----------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 ----------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" ----------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" ----------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" ----------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 ----------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" ----------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 ----------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 ----------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 ----------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 ----------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" ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------1512--BH80------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH81------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH82------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH83------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH84------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH85------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH86------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH87------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH88------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH89------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8A------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8B------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8C------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8D------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8E------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH8F------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH90------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH91------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH92------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH93------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH94------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH95------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------1512--BH96------------------------- INT 15 - DESQview v2.50+ - SEND MESSAGE 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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ??? ----------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 ----------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 ----------15BFDEBX0000----------------------- INT 15 - DESQview/X - DVDOS4GX.DVR - INSTALLATION CHECK AX = BFDEh BX = 0000h Return: AX = ??? (0003h) BX = FFFFh SeeAlso: AX=BF02h ----------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 ----------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 ----------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 ----------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 ----------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 ----------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" ----------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 ----------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 ----------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 ----------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 ----------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 ----------15BFDEBX000C----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Ch CL = ??? 00h nonzero Return: ??? SeeAlso: AX=BFDEh/BX=0000h ----------15BFDEBX000D----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - ??? AX = BFDEh BX = 000Dh ??? Return: ??? SeeAlso: AX=BFDEh/BX=0000h ----------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 ----------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 ----------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 ----------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 ----------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 ----------15BFDEBX0013----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = 0013h Return: DX:CX -> ??? SeeAlso: AX=BFDEh/BX=000Eh ----------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 ----------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 ----------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 ----------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 ----------15BFDEBXFFFD----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - GET ??? AX = BFDEh BX = FFFDh Return: CX:DX = ??? SeeAlso: AX=BFDEh/BX=FFFEh ----------15BFDEBXFFFE----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - SET ??? AX = BFDEh BX = FFFEh CX:DX = ??? SeeAlso: AX=BFDEh/BX=FFFDh ----------15BFDEBXFFFF----------------------- INT 15 - DESQview/X 1.02 - DVDOS4GX.DVR - NOP AX = BFDEh BX = FFFFh SeeAlso: AX=BFDEh/BX=0000h ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------15DE09----------------------------- INT 15 - DESQview - UNIMPLEMENTED AX = DE09h Return: nothing (NOP in DV 1.x and 2.x) ----------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 ----------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 ----------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 ----------15DE0D----------------------------- INT 15 - DESQview v2.00+ - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY AX = DE0Dh ES:DI -> previously allocated block Return: nothing SeeAlso: AX=1002h,AX=DE0Ch ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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=1117h,AX=DE21h,INT 2F/AX=1685h ----------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) ----------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 ----------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 ----------15DE1B----------------------------- INT 15 - DESQview v2.23+ internal - DECREMENT CRITICAL NESTING COUNT AX = DE1Bh Return: nothing SeeAlso: AX=101Ch,AX=DE13h,AX=DE1Ch ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 ----------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 1: process's memory is swapped out 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 ----------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+ ----------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 ----------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 ----------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 ----------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 = ??? 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 ----------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 ----------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. ----------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. ----------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. ----------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. ----------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 ----------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. ----------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 ----------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 ----------15DE2CDX0100----------------------- 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 06h BYTE task status (see below) 07h BYTE unused 08h WORD 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 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 ----------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" ----------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 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 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 IP address of remote (big-endian) 38h 6 BYTEs ??? ----------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 ----------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 ----------1605------------------------------- INT 16 - KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (AT/PS w enh keybd only) AH = 05h CH = scan code CL = ASCII character Return: AL = 00h if successful 01h if keyboard buffer full Note: under DESQview, the following "keystrokes" invoke the following actions when they are read from the keyboard buffer: 38FBh or FB00h switch to next window (only if main menu popped up) 38FCh or FC00h pop up DESQview main menu 38FEh or FE00h close the current window 38FFh or FF00h pop up DESQview learn menu SeeAlso: AH=00h,AH=71h,AH=FFh,INT 15/AX=DE10h ----------212B--CX4445----------------------- INT 21 - DESQview - INSTALLATION CHECK AH = 2Bh CX = 4445h ('DE') DX = 5351h ('SQ') AL = subfunction (DV v2.00+) 01h get version Return: BX = version (BH = major, BL = minor) Note: early copies of v2.00 return 0002h 02h get shadow buffer info, and start shadowing Return: BH = rows in shadow buffer BL = columns in shadow buffer DX = segment of shadow buffer 04h get shadow buffer info Return: BH = rows in shadow buffer BL = columns in shadow buffer DX = segment of shadow buffer 05h stop shadowing Return: AL = FFh if DESQview not installed Notes: in DESQview v1.x, there were no subfunctions; this call only identified whether or not DESQview was loaded. DESQview v2.52 performs function 01h for all subfunction requests 0Ch and higher and appears to ignore all lower-numbered functions not listed here. DESQview versions 2.5x are part of DESQview/X v1.0x. BUG: subfunction 05h does not appear to work correctly in DESQview 2.52 SeeAlso: INT 10/AH=FEh,INT 10/AH=FFh,INT 15/AX=1024h,INT 15/AX=DE30h ----------2130FFCX4445----------------------- INT 21 - DESQ??? - INSTALLATION CHECK AX = 30FFh CX = 4445h ("DE") DX = 5351h ("SQ") Return: BH = 05h if installed ??? Note: called by DUBLDISK.COM v2.6; this function is not supported by DESQview, so it may be for DESQview's precursor DESQ. SeeAlso: AX=4404h"DUBLDISK" ----------214402----------------------------- INT 21 U - Quarterdeck - QEMM-386 v5+ - GET API ENTRY POINT AX = 4402h BX = file handle for device "QEMM386$" CX = 0004h DS:DX -> DWORD buffer for API entry point Return: CF clear if successful buffer filled (see INT 67/AH=3Fh for entry point parameters) CF set on error AX = error code (01h,05h,06h,0Dh) (see AH=59h) SeeAlso: AX=4402h"HOOKROM",INT 2F/AX=D201h/BX=5145h,INT 67/AH=3Fh ----------214402----------------------------- INT 21 U - Quarterdeck - QEMM-386 v6+ - GET ??? AX = 4402h BX = file handle for device "EMMXXXX0" CX = 0006h (size of buffer in bytes) DS:DX -> buffer for ??? first byte must be 01h on entry Return: CF clear if successful buffer filled (see INT 67/AH=3Fh function 1B00h) CF set on error AX = error code (01h,05h,06h,0Dh) (see AH=59h) Note: this call always returns an error if Windows3 support has been disabled with the NW3 switch to QEMM386.SYS SeeAlso: INT 2F/AX=D201h/BX=5145h,INT 67/AH=3Fh ----------214402----------------------------- INT 21 U - Quarterdeck - HOOKROM.SYS - GET HOOKED VECTOR TABLE AX = 4402h BX = file handle for device "HOOKROM$" CX = 0004h DS:DX -> DWORD buffer for address of hooked vector table (see below) Return: CF clear if successful DS:DX buffer filled CF set on error AX = error code (01h,05h,06h,0Dh) (see AH=59h) SeeAlso: AX=4402h"QEMM" Format of hooked vector table entry: Offset Size Description 00h 5 BYTEs FAR jump to actual interrupt handler (end of table if first byte is not EAh) 05h BYTE interrupt vector number ----------29--------------------------------- INT 29 C - DOS 2+ - FAST CONSOLE OUTPUT AL = character to display Return: nothing Notes: automatically called when writing to a device with bit 4 of its device driver header set (see also INT 21/AH=52h) COMMAND.COM v3.2 and v3.3 compare the INT 29 vector against the INT 20 vector and assume that ANSI.SYS is installed if the segment is larger the default handler under DOS 2.x and 3.x simply calls INT 10/AH=0Eh the default handler under DESQview 2.2 understands the <Esc>[2J screen-clearing sequence, calls INT 10/AH=0Eh for all others SeeAlso: INT 79 ----------2A2001----------------------------- INT 2A - MS Networks or NETBIOS - ??? AX = 2001h ??? Return: ??? Note: intercepted by DESQview 2.x ----------2F4310----------------------------- INT 2F - EXTENDED MEMORY SPECIFICATION (XMS) - GET DRIVER ADDRESS AX = 4310h Return: ES:BX -> driver entry point Note: HIMEM.SYS v2.77 chains to previous handler if AH is not 00h or 10h SeeAlso: AX=4300h Perform a FAR call to the driver entry point with AH set to the function code AH function 34h (QEMM 5.11 only, undocumented) ??? 44h (QEMM 5.11 only, undocumented) ??? Notes: HIMEM.SYS requires at least 256 bytes free stack space the XMS driver need not implement functions 10h through 12h to be considered compliant with the standard BUG: HIMEM v3.03-3.07 crash on an 80286 machine if any of the 8Xh functions are called Format of EMM structure: Offset Size Description 00h DWORD number of bytes to move (must be even) 04h WORD source handle 06h DWORD offset into source block 0Ah WORD destination handle 0Ch DWORD offset into destination block Notes: if source and destination overlap, only forward moves (source base less than destination base) are guaranteed to work properly if either handle is zero, the corresponding offset is interpreted as a real-mode address referring to memory directly addressable by the processor Error codes returned in BL: 00h successful 80h function not implemented 81h Vdisk was detected 82h an A20 error occurred 8Eh a general driver error 8Fh unrecoverable driver error 90h HMA does not exist 91h HMA is already in use 92h DX is less than the /HMAMIN= parameter 93h HMA is not allocated 94h A20 line still enabled A0h all extended memory is allocated A1h all available extended memory handles are allocated A2h invalid handle A3h source handle is invalid A4h source offset is invalid A5h destination handle is invalid A6h destination offset is invalid A7h length is invalid A8h move has an invalid overlap A9h parity error occurred AAh block is not locked ABh block is locked ACh block lock count overflowed ADh lock failed B0h only a smaller UMB is available B1h no UMB's are available B2h UMB segment number is invalid ----------2FD200BX5144----------------------- INT 2F U - Quarterdeck - QEMM/QRAM/VIDRAM/MANIFEST v5.0+ - INSTALLATION CHECK AX = D200h BX = 5144h ("QD") CX = 4D45h ("ME") DX = 4D30h ("M0") Return: AL = FFh installed if BX,CX,DX registers were as specified on entry: BX = 4D45h ("ME") CX = 4D44h ("MD") DX = 5652h ("VR") Notes: QEMM/QRAM/VIDRAM/MANIFEST/etc will search for a free AH value from D2h through FFh, then C0h through D1h for AL <> 0, if the BX/CX/DX values don't match a the identifier of a Quarterdeck product, it just chains to the previous INT 2F handler ----------2FD201BX4849----------------------- INT 2F U - Quarterdeck - GET QD HIMEM PRESENCE AX = D201h BX = 4849h ("HI") CX = 4D45h ("ME") DX = 4D51h ("MQ") Return: BX = 4F4Bh ("OK") ES:DI -> HIMEM entry point Notes: QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h through FFh, then C0h through D1h SeeAlso: AX=D201h/BX=5145h ----------2FD201BX4849----------------------- INT 2F U - Quarterdeck - QEMM/QRAM v5.0+ - GET HIRAM MEMORY CHAIN AX = D201h BX = 4849h ("HI") CX = 5241h ("RA") DX = 4D30h ("M0") Return: BX = 4F4Bh ("OK") CX = segment of start of HIRAM chain DX = QEMM/QRAM code segment Notes: QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h through FFh, then C0h through D1h QEMM and QRAM both responded the same the HIRAM memory chain has the same format as the regular DOS 4.0 memory chain (see INT 21/AH=52h), except that XMS Upper Memory Blocks have the block header program name field set to "UMB"; blocks whose "owner" field is set to the QEMM/QRAM code segment returned in DX are locked out regions such as video memory and ROMs. ----------2FD201BX4D41----------------------- INT 2F U - Quarterdeck - MANIFEST v1.0+ - INSTALLATION CHECK AX = D201h BX = 4D41h ("MA") CX = 4E49h ("NI") DX = 4645h ("FE") Return: BX = 5354h ("ST") Note: QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h through FFh, then C0h through D1h ----------2FD201BX4D45----------------------- INT 2F U - Quarterdeck - DVDOS4GX.DVR - ??? AX = D201h BX = 4D45h ("ME") CX = 5155h ("QU") DX = 5044h ("PD") Return: ??? Notes: AH=D2h is the default; use the Quarterdeck installation check described under AX=D200h called by QEMM 6.03 ----------2FD201BX5145----------------------- INT 2F U - Quarterdeck - QEMM v5.0+ - INSTALLATION CHECK AX = D201h BX = 5145h ("QE") CX = 4D4Dh ("MM") DX = 3432h ("42") Return: BX = 4F4Bh ("OK") ES:DI -> QEMM API entry point (see INT 67/AH=3Fh) Notes: QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h through FFh, then C0h through D1h this call is not available under QEMM v6.00 unless Windows3 support has been disabled with the NW3 switch to QEMM386.SYS SeeAlso: AX=D201h/BX=4849h,INT 67/AH=3Fh ----------2FD201BX5649----------------------- INT 2F U - Quarterdeck - VIDRAM v5.0+ - INSTALLATION CHECK AX = D201h BX = 5649h ("VI") CX = 4452h ("DR") DX = 414dh ("AM") Return: BX = 4F4Bh ("OK") ES:DI -> VIDRAM entry point Note: QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h through FFh, then C0h through D1h Call VIDRAM entry point with: AH = 00h get status Return: AL = VIDRAM state (see below) BL = extra RAM status 00h VIDRAM does not use extra RAM 01h VIDRAM uses EMS as extra RAM 02h VIDRAM uses EGA as extra RAM BH = feature flags bit 0: override enabled bit 1: mapped memory detected in A000h-B000h range bit 2: top of memory not at 640K bit 3: MDA detected bit 4: high RAM exists in video area bit 5: mapped memory detected in video area bits 6-7: reserved??? CL = current monitor (01h = mono, 80h = color) SI = current top of memory (paragraph) DI = segment of start of HiRAM chain AH = 01h setup AL = VIDRAM state (00h off, 01h no EGA graphics, 02h no graph) BL = extra RAM status (see above) BH = feature flags (see above) CL = monitor (01h = monochrome, 80h = color) SI = new top of memory (paragraph) DI = segment of start of HiRAM chain AH = 02h get end address of VIDRAM code Return: ES:DI -> VIDRAM partial map context (see below) Return: CF set on error CF clear if successful Format of partial map context (EMS 3.2): Offset Size Description 00h BYTE EMS version ID (32h) 01h WORD EMM handle for this entry 03h BYTE number of frames 04h BYTE first page frame 05h WORD offset from ES to previously saved map Format of partial map context (EMS 4.0): Offset Size Description 00h BYTE EMS version ID (40h) 01h WORD mappable segment count 03h N WORD mappable segments WORD offset to previously saved map??? ----------2FDE00BX4445----------------------- INT 2F - DESQview v2.26+ External Device Interface - INSTALLATION CHECK AX = DE00h BX = 4445h ("DE") CX = 5844h ("XD") DX = 4931h ("I1") Return: AL = FFh if installed (even if other registers do not match) if BX,CX, and DX were as specified on entry, BX = 4845h ("HE") CX = 5245h ("RE") DX = 4456h ("DV") Notes: AH=DEh is the default XDI multiplex number, but may range from C0h-FFh programs should check for XDI starting at DEh to FFh, then C0h to DDh the XDI handler should not issue any DOS or BIOS calls, nor should it issue DESQview API calls other than those allowed from hardware ints SeeAlso: AX=DE02h,INT 15/AX=5400h ----------2FDE01----------------------------- INT 2F - DESQview v2.26+ External Device Interface - DRIVER CUSTOM SUBFUNCTION AX = DE01h BX = driver ID other registers as needed by driver Notes: XDI drivers should pass this call through to previous handler if ID does not match DESQview never calls this function ----------2FDE01BX4450----------------------- INT 2F U - Quarterdeck QDPMI.SYS v1.0 - INSTALLATION CHECK AX = DE01h BX = 4450h ("DP") CX = 4D49h ("MI") DX = 3039h ("09") Return: AL = FFh if installed BX = 4D42h ("MB") CX = 4921h ("I!") DX = 8F4Fh ES:DI -> filename of DPMI host overlay Note: the installation check consists of testing for the existence of the character device QDPMI$$$ ----------2FDE01BX5242----------------------- INT 2F - DESQview v2.26+ XDI - CUSTOM SUBFUNCTION, Ralf Brown's XDI drivers AX = DE01h BX = 5242h ("RB") CX:DX = program identifier 656F7000h ("eop",0) for DVeop Return: AX = 5242h ("RB") if installed ES:BX -> data or entry point CX = version number (CH = major, CL = minor) Call DVeop entry point with: ES:DI -> callback address or 0000h:0000h to remove callback Return: AX = status 0000h failed (callback table full or attempted to remove non- existent callback) 0001h successful ES:DI -> chaining address BX,CX,DX destroyed Notes: the callback function is called with a simulated interrupt when the DESQview window containing it is closed; it should perform all necessary cleanup and then perform a FAR jump to the chaining address or an IRET if the chaining address is 0000h:0000h if the program wishes to remove itself before the window is closed, it should call the DVeop entry point with the previously returned chaining address and ignore the returned chaining address. ----------2FDE01BX7474----------------------- INT 2F - DESQview v2.26+ XDI - CUSTOM SUBFUNCTION, DVTXDI.COM AX = DE01h BX = 7474h CL = function 00h installation check Return: AL = FFh 01h get process handle DX = keys on Open Window menu (DL = first, DH = second) Return: AX = process handle or 0000h if not running 02h (v1.3+) set TMAN handle DX = TMAN process handle 03h (v1.3+) set open keys to ignore on next CL=01h call DX = keys on Open Window menu (DL = first, DH = second) Return: BX = 4F4Bh ("OK") DL destroyed Note: DVTXDI is distributed as part of the shareware products DVTree (DOS shell/DESQview process manager) and DVTMAN by Mike Weaver ----------2FDE01BX7575----------------------- INT 2F - DESQview v2.26+ XDI - CUSTOM SUBFUNCTION, DVSIXDI.COM AX = DE01h BX = 7575h CX = function 0000h installation check Return: AX = 00FFh if installed 0001h turn on notification (currently unused) Return: AX = 0001h 0002h turn off notification (currently unused) Return: AX = 0001h 0003h get process information Return: AX = status 0000h failed 0001h successful BX = last instantaneous time slice in 1/100s (v1.10) in 1/18s (v1.11+) CX = number of processes DX = number of "(starting)" records (v2.00+) SI = number of records in process info array (v2.00+) (always 15 for v1.x) ES:DI -> process info array (see below) 0004h get version Return: AH = major version AL = minor version 0005h (v1.10+) get time since DESQview started Return: DX:AX = 1/100s since DV start (v1.10) DX:AX = 1/18s since DV start (v1.11+) 0006h (v1.10+) get number of task switches Return: DX:AX = total task switches CX = task switches in last instantaneous interval Notes: DVSIXDI is part of the DVSI (DESQview System Information) package by Daniel J. Bodoh for v1.00, function 0003h allocates common memory, which the caller must deallocate after reading the process information; only the currently used records are placed in the buffer for v1.10+, function 0003h merely returns a pointer to the internal array of process information; the caller should make a copy of the array while inside a critical section (see INT 15/AX=101Bh). Only those records with bit 7 of the first byte set are valid. Format of information for one process (v1.00): Offset Size Description 00h BYTE flags bit 7: process slot is valid 01h WORD offset into DESQVIEW.DVO of program's record if started from Open Windows menu, else undefined 03h WORD Switch Windows window number 05h WORD segment of process handle 07h WORD number of tasks owned by process 09h WORD mapping context of process 0Bh DWORD hook for other programs Format of information for one process (v1.10-v2.00): Offset Size Description 00h BYTE flags bit 7: valid record 6: (v2.00+) record is allocated; if bit 7 clear, process is "(starting)" and only offsets 01h and 09h are valid 5: (v2.00+) this app currently owns the CPU 4: reserved (0) 3: DESQview system task 2: reserved (0) 1: task has keyboard (currently unused) 0: task swapped out (currently unused) 01h WORD Open Window keys 03h WORD Switch Windows number 05h WORD segment of process handle 07h WORD number of tasks for process 09h WORD process mapping context 0Bh DWORD time process started (relative to start of DESQview) 0Fh DWORD time process last got CPU (relative to start of DESQview) 13h DWORD time process last gave up CPU (relative to start of DESQview) 17h DWORD total CPU time since process started 1Bh DWORD CPU time at start of current instantaneous interval 1Fh DWORD CPU time in current instantaneous interval 23h DWORD hook for other programs Note: all times are in 1/100s for v1.10, in 1/18s for v1.11+ ----------2FDE01BXFFFE----------------------- INT 2F U - DESQview v2.26+ XDI - DVXMS.DVR - ??? AX = DE01h BX = FFFEh CX = 4D47h ("MG") DX = 0052h (0,"R") Return: AL = FFh DX = 584Dh ----------2FDE02----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - DV INITIALIZATION COMPLETE AX = DE02h BX = mapping context of DESQview DX = handle of DESQview system task Note: driver should pass this call to previous handler after doing its work SeeAlso: AX=DE03h,AX=DE0Fh,INT 15/AX=5400h ----------2FDE03----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - DV TERMINATION AX = DE03h BX = mapping context of DESQview DX = handle of DESQview system task Notes: driver should pass this call to previous handler before doing its work DESQview makes this call when it is exiting, but before unhooking any interrupt vectors SeeAlso: AX=DE02h,AX=DE0Fh,INT 15/AX=5407h ----------2FDE04----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - ADD PROCESS AX = DE04h BX = mapping context of new process DX = handle of process Return: nothing Notes: XMS XDI handler (installed by default) allocates a 22-byte record (see below) from "common" memory to control access to XMS memory all DOS, BIOS, and DV API calls are valid in handler driver should pass this call to previous handler after processing it SeeAlso: AX=DE05h,AX=DE06h,INT 15/AX=5401h Format of XMS XDI structure: Offset Size Description 00h DWORD pointer to 10-byte record??? 04h DWORD pointer to next XMS XDI structure 08h WORD mapping context 0Ah BYTE ??? 0Bh 5 BYTEs XMS entry point to return for INT 2F/AX=4310h (FAR jump to next field) 10h 6 BYTEs FAR handler for XMS driver entry point (consists of a FAR CALL followed by RETF) ----------2FDE05----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - REMOVE PROCESS AX = DE05h BX = mapping context of process DX = handle of last task in process Return: nothing Notes: XMS XDI handler releases the structure allocated by AX=DE04h driver should pass this call to previous handler before processing it all DOS, BIOS, and DV API calls except those generating a task switch are valid in handler SeeAlso: AX=DE04h,AX=DE07h,INT 15/AX=5402h ----------2FDE06----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - CREATE TASK AX = DE06h BX = mapping context of process containing task DX = handle of new task Notes: driver should pass this call to previous handler after processing it all DOS, BIOS, and DV API calls are valid in handler ----------2FDE07----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - TERMINATE TASK AX = DE07h BX = mapping context of process containing task DX = handle of task Notes: driver should pass this call to previous handler before processing it all DOS, BIOS, and DV API calls except those generating a task switch are valid in handler SeeAlso: AX=DE04h,AX=DE06h,AX=DE10h ----------2FDE08----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SAVE STATE AX = DE08h BX = mapping context of task being switched from DX = handle of task being switched from Notes: invoked prior to task swap, interrupts, etc driver should pass this call to previous handler after processing it SeeAlso: AX=DE09h,INT 15/AX=5403h,INT 15/AX=DE27h ----------2FDE09----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - RESTORE STATE AX = DE09h BX = mapping context of task being switched to DX = handle of task being switched to Notes: state is restored except for interrupts driver should pass this call to previous handler before processing it SeeAlso: AX=DE08h,INT 15/AX=5404h,INT 15/AX=DE27h ----------2FDE0A----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - CHANGE KEYBOARD FOCUS AX = DE0Ah BX = mapping context of task receiving focus DX = handle of running task Notes: driver should pass this call to previous handler before processing it this call often occurs inside a keyboard interrupt SeeAlso: INT 15/AX=DE26h,INT 15/AX=DE2Fh ----------2FDE0B----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - DVP PROCESSING COMPLETE AX = DE0Bh BX = mapping context of DESQview system task CX = number of system memory paragraphs required for the use of all XDI drivers (DV will add this to system memory in DVP buffer) DX = handle of DESQview system task SI = mapping context of new process if it starts ES:DI -> DVP buffer Return: CX incremented as needed Notes: once DV invokes this function, the DVP buffer contents may be changed driver should pass this call to previous handler before processing it ----------2FDE0C----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SWAP OUT PROCESS AX = DE0Ch BX = mapping context of task being swapped out DX = handle of DESQview system task Note: driver should pass this call to previous handler after processing it ----------2FDE0D----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SWAP IN PROCESS AX = DE0Dh BX = mapping context of process just swapped in DX = handle of DESQview system task Note: driver should pass this call to previous handler before processing it ----------2FDE0E----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - DVP START FAILED AX = DE0Eh BX = mapping context of DESQview system task DX = handle of DESQview system task SI = mapping context of failed process (same as for call to AX=DE0Bh) Note: driver should pass this call to previous handler after processing it ----------2FDE0F----------------------------- INT 2F C - DESQview v2.50+ External Dev Interface - INITIALIZE DV AX = DE0Fh Note: DESQview 2.50+ calls this function just before it completes its initialization. At the time of the call, DESQview has not yet changed any interrupt vectors SeeAlso: AX=DE02h ----------2FDE10----------------------------- INT 2F C - DESQview v2.50+ External Dev Interface - FREE TASK AX = DE10h BX = mapping context of process DX = task handle of process Note: DESQview 2.50+ calls this function before it frees the task; it is similar to AX=DE07h but allows the XDI handler to make calls which cause context switches SeeAlso: AX=DE06h,AX=DE07h ----------4B8102DX0000----------------------- INT 4B - Virtual DMA Specification (VDS) - GET VERSION AX = 8102h DX = 0000h Return: CF clear if successful AH = major version number AL = minor version number BX = product number 0000h for Quadtel's QMAPS and Hewlett-Packard's HPMM.SYS 0001h for Microsoft's EMM386.EXE 4560h ("E`") for Qualitas' 386MAX 4D43h ("MC") for V Communication's Memory Commander 5145h ("QE") for Quarterdeck's QEMM-386 CX = product revision number always 0000h for QMAPS and HPMM.SYS always 0001h for Microsoft's EMM386.EXE v4.20-4.41 SI:DI = maximum DMA buffer size DX = flags bit 0: PC/XT bus (DMA in first megabyte only) 1: physical buffer/remap region in first megabyte 2: automatic remap enabled 3: all memory is physically contiguous 4-15: reserved (zero) CF set on error AL = error code (see below) Note: bit 5 of 0040h:007Bh is supposed to be set if VDS is supported; this is apparently not always the case SeeAlso: INT 31 ----------4B810D----------------------------- INT 4B - QEMM-386 - BUG AX = 810Dh Note: the code in QEMM v5.11 and 6.00 jumps to an invalid location on this call ----------50--------------------------------- INT 50 - IRQ0 relocated by DESQview Notes: this is the default location for older versions; DESQview v2.26+ searches for unused ranges of interrupts and uses the lowest available range in its list for relocating these IRQs and the next lowest for relocating IRQ8-IRQ15 a range of eight interrupts starting at a multiple of 8 is considered available if all vectors are identical and it has not been excluded with an /XB:nn commandline switch the list of ranges for v2.26 is 50h,58h,68h,78h,F8h (if < two of these are available, F8h and then 50h are used anyway) the list of ranges for v2.31+ is 68h,78h,88h-B8h,F8h (if < two of these are available, F8h and then F0h are used anyway) SeeAlso: INT 08"IRQ0",INT 51"DESQview",INT 54"DESQview",INT 58"DESQview" ----------51--------------------------------- INT 51 - through 53 - IRQ1-IRQ3 relocated by DESQview Note: this is the default location for older versions; see INT 50"DESQview" for details of interrupt relocation SeeAlso: INT 50"DESQview",INT 54"DESQview",INT 58"DESQview" ----------54--------------------------------- INT 54 - through 57 - IRQ4-IRQ7 relocated by DESQview Note: this is the default location for older versions; see INT 50"DESQview" for details of interrupt relocation SeeAlso: INT 50"DESQview",INT 58"DESQview" ----------58--------------------------------- INT 58 - IRQ8 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 70 ----------59--------------------------------- INT 59 - IRQ9 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 71 ----------5A--------------------------------- INT 5A - IRQ10 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 72 ----------5B--------------------------------- INT 5B - IRQ11 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 73 ----------5C--------------------------------- INT 5C - IRQ12 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 74 ----------5D--------------------------------- INT 5D - IRQ13 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 75 ----------5E--------------------------------- INT 5E - IRQ14 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 76 ----------5F--------------------------------- INT 5F - IRQ15 relocated by DESQview 2.26+ Note: this is the default, but other INTs may be used (see INT 50"DESQview") SeeAlso: INT 50"DESQview",INT 77 ----------63--------------------------------- INT 63 - DESQview/X - SOCKET API Notes: parameters are passed by patching!! data field immediately following the entry point, as detailed below; the preferred method for calling the socket API is via INT 15/AX=DE2Eh the installation check consists of testing for the string "dvxunix" (yes, lowercase) at offset 9 from the interrupt handler start SeeAlso: INT 15/AX=DE2Eh,INT BE"DESQview" Format of interrupt handler entry: Offset Size Description 00h 3 BYTEs near jump or short jump + NOP to actual interrupt handler 03h WORD offset from following pointer for initial top of local stack 05h DWORD pointer to argument/stack block (see INT 15/AX=DE2Eh) 09h 7 BYTEs signature "dvxunix" ----------673F--CX5145----------------------- INT 67 U - QEMM-386 v4.23+ - INSTALLATION CHECK AH = 3Fh CX = 5145h ("QE") DX = 4D4Dh ("MM") Return: AH = 00h if installed ES:DI -> QEMM API entry point Notes: if no other program has hooked INT 67, an alternate installation check is to test for the string "QUARTERDECK EXPANDED MEMORY MANAGER 386" at offset 14h in the INT 67 handler's segment; the word at offset 12h contains the offset in the handler's segment of the API entry point MICEMM (Micronics Expanded Memory Manager) versions 2.0C and 4D support the alternate QEMM installation check and entry point functions 00h, 02h, and 03h; version 4D only provides the signature string if the commandline argument "DV" is provided 386MAX v6.01 responds to this call, but DESQview 2.42 does not recognize the returned entry point as providing QEMM's capabilities because a) only functions 0Ch (different from QEMM 0Ch) and 1000h-1009h are supported, b) status is returned as for EMS functions, not QEMM funcs c) the protected-mode entry point returned by function 1000h only supports functions 0Ch, 1004h, 1005h, and 100Ah the string check mentioned above is not supported by 386MAX SeeAlso: AH=DDh,AX=5BF0h,AX=FFA5h,INT 15/AX=11DEh,INT 21/AX=4402h"QEMM" SeeAlso: INT 21/AX=4402h"386MAX",INT 2F/AX=D201h/BX=5145h Call QEMM entry point with: AH = 00h get QEMM state Return: CF clear AL = QEMM state bit 0 set if QEMM turned OFF bit 1 set if in "Auto" mode AH = 01h set QEMM state AL = new state bit 0 set: place QEMM in OFF state Return: CF clear if successful CF set on error AH = 02h get ??? Return: CF clear AX = segment of ??? data structure Data Structure Offset Size Description 00h DWORD page table entry for ??? ??? AH = 03h get QEMM version Return: CF clear AX = BX = version in BCD Notes: the official docs only state that the version is returned in BX MICEMM returns AX=0001h, BX unchanged AH = 04h allocate 4K page and set AUTO/ON mode Return: CF clear if successful DX = page number of a 4K page CF set if unable to allocate page Note: QEMM mode unchanged if not AUTO/OFF AH = 05h free 4K page and turn QEMM off DX = page number returned by function 04h Return: CF clear Note: QEMM mode unchanged if not AUTO/ON AH = 06h make new mapping context??? DX = page number of 4K page to hold page table Return: CF clear Note: copies page table into given page and then sets ??? page table entry to point at copy AH = 07h get mapping context Return: CF clear DX = page number of page table for current mapping context AH = 08h set mapping context??? DX = linear page number of page table Return: CF clear AH = 09h get linear page number for page table entry CX = page table index Return: CF clear DX = linear page number AH = 0Ah set linear page number for page table entry CX = page table index DX = linear page number Return: CF clear AH = 0Bh map 4K pages BX = number of pages CX = first page number (must be 0100h to allocate HMA) DX = EMS handle (memory belonging to EMS handle will be mapped into the address space beginning with the first page allocated to the handle) Return: AH = 00h AH = 0Ch get available memory Return: CF clear BX = 0001h CX = total 4K pages??? DX = number of 4K pages free AH = 0Dh ??? (related to callbacks) AL = 00h/01h/02h ??? Return: CF clear AH = 0Eh set ??? callbacks DS:BX -> FAR routine for ??? ES:DX -> FAR routine for ??? Return: CF clear Note: DS:BX callback should return BX=???; ES:DX is called with BX=???, and should set the ??? from which the other handler read the value of BX. BH and BL appear to be separate values. AH = 0Fh unmap 4K pages CX = first page number DX = number of pages Return: CF clear AL = 00h/01h if ??? Note: if CX=0100h and DX=0010h, the HMA is remapped to simulate a disabled A20 AX = 1000h get protected-mode interface DS:SI -> 16-byte buffer for two GDT entries ES:DI -> buffer for 4K page table Return: CF clear EAX = offset of protected-mode API entry point DS:SI buffer filled with two GDT descriptors first is QEMM code segment, second is data??? ES:DI buffer filled with 4K page table DI points to first unused page table entry SeeAlso: INT 67/AX=DE01h AX = 1001h get CPU debug registers ES:DI -> buffer for debug registers (8 DWORDs) Return: CF clear BL = INT01 handling (see function 1002h) ES:DI buffer filled AX = 1002h set CPU debug registers BL = INT01 handling 00h reflect all debugging exceptions as V86-mode INT 01's else convert debugging exceptions other than single-step into V86-mode INT 03's, single-step to INT 01's ES:DI -> buffer containing debug registers (8 DWORDs) Return: CF clear Notes: identical to INT 67/AX=DE09h if BL=01h the INT01 handling flag is set to 01h by the general- protection violation handler for certain privileged instructions AX = 1003h get machine status word CR0 Return: CF clear EAX = contents of CR0 SeeAlso: INT 67/AX=DE07h AX = 1004h allocate a 4K page Return: CF clear if successful EDX = linear address of allocated page CF set on error SeeAlso: INT 67/AX=DE04h AX = 1005h free 4K page EDX = linear address of page to free Return: CF clear SeeAlso: INT 67/AX=DE05h AX = 1006h NOP Return: CF set AX = 1007h get maximum physical memory address Return: CF clear EDX = physical address of highest 4K memory page SeeAlso: INT 67/AX=DE02h AX = 1008h get physical address of page in first megabyte CX = page number (linear address shifted right 12 bits) Return: CF clear EDX = linear address of page SeeAlso: function 1F00h AX = 1009h switch to protected mode ESI = linear address in first megabyte of system reg values (see INT 67/AX=DE0Ch) interrupts disabled Return: interrupts disabled GDTR, IDTR, LDTR, TR loaded SS:ESP must have at least 16 bytes space, and the entry point is required to set up a new stack before enabling interrupts EAX, ESI, DS, ES, FS, GS destroyed AX = 100Ah switch back to virtual-86 mode DS = selector for data segment from function 1000h SS:ESP in first megabyte of linear memory interrupts disabled STACK: QWORD return address from FAR call to 32-bit segment DWORD EIP DWORD CS DWORD reserved for EFLAGS DWORD ESP DWORD SS DWORD ES DWORD DS DWORD FS DWORD GS will switch to virtual86 mode with interrupts disabled, all segment registers loaded, and EAX destroyed. AH = 11h get memory type map AL = zero/nonzero ??? (set by QEMM.COM but apparently ignored by QEMM 6.00) ES:DI -> 256-byte buffer for memory types Return: CF clear BL = ??? ES:DI buffer filled Note: each byte of the buffer corresponds to a 4K page, and contains the type of that page: 00h = mappable, 02h = mapped ROM, 03h = high RAM, 04h = excluded, 05h = video, 06h = ROM, 07h = adapter ROM, 08h = split ROM, 09h = page frame, 0Ah = RAMmable, 0Bh = conventional AH = 12h get HIRAM chain Return: CF clear BX = segment of first MCB in high memory 0000h if no high memory AX = 1300h VIDRAMEGA??? BL = 00h copy ??? nonzero copy ??? (reverse) Return: CF clear AL = 00h if all pages clean = 01h if any page dirty AX = 1301h check if ??? DX:DI = start address of range to check ??? CX = length of range Return: CF clear CX = ??? (0000h or 1000h) AX = 1302h ??? BL = ??? BH = ??? CX = ??? SI = offset of ??? DI = offset of ??? ??? Return: CF clear ??? Note: disables certain interrupts at the two 8259 PICs during execution; also modifies CRT controller during execution under certain circumstances AX = 1303h ??? EMS allocation BX = number of pages of EMS to allocate ??? Return: CF clear if successful CF set on error ??? AX = 1304h EMS deallocation DX = EMS handle Return: CF clear AX = 1305h ??? CX = ??? Return: CF clear Note: disables certain interrupts at the two 8259 PICs during execution (see AX=130Ch) AX = 1306h set DESQview critical section counter address ES:BX -> WORD DESQview critical section counter or 0000h:0000h Return: CF clear Note: also sets pointer in low-memory part of QEMM to current value of INT 15 if ES:BX not 0000h:0000h AX = 1307h ??? Return: CF clear Note: disables certain interrupts at the two 8259 PICs during execution (see AX=130Ch) AX = 1308h ??? BL = ??? (zero/nonzero) Return: CF clear AX = 1309h Hercules mode-change support ES:BX -> new address for Hercules mode-change callback Return: CF clear Note: the callback function is called whenever the CRTC mode register is written, with AL set to the value written AX = 130Ah virtualize EGA/VGA I/O ports 03C8h/03C9h??? CX:DX -> buffer for storing CRTC register contents??? or 0000h:0000h to disable Return: CF clear AX = 130Bh ??? BL = ??? Return: CF clear ??? AX = 130Ch set interrupts to mask BX = interrupts to mask out during AX=1302h,AX=1307h,AX=1308h, AX=130Dh,AX=1310h (BL = master PIC, BH = slave PIC) Return: CF clear AX = 130Dh ??? ??? Return: CF clear Note: disables certain interrupts at the two 8259 PICs during execution (see AX=130Ch) AX = 130Eh ??? (modifies CRT controller setup) ??? Return: CF clear AX = 130Fh reset ??? Return: CF clear AX = 1310h ??? ??? Return: CF clear Note: disables certain interrupts at the two 8259 PICs during execution (see AX=130Ch) AX = 1311h set ??? BL = ??? Return: CF clear AX = 1312h (v6.02) NOP??? Note: called by DV 2.42, but appears to be a NOP in QEMM 6.02 AX = 1400h ??? ES:DI -> ??? data structure (at least 24 bytes) BL = ??? Return: AX = ??? Data structure Offset Size Description 00h WORD ??? 02h DWORD far pointer to ??? 06h DWORD far pointer to ??? pointer array (see below) 0Ah DWORD far pointer to ??? 0Eh DWORD ??? 12h WORD segment of ??? 14h DWORD far pointer to ??? Pointer array Offset Size Description 00h WORD number of pointers to follow 02h N DWORDs far pointers to ??? Note: QEMM converts the pointers into linear addresses in place AX = 1401h ??? Return: CF clear ??? AX = 1402h ??? BL = function 00h NOP 01h ??? 02h ??? other ??? ES:DI -> ??? Return: CF clear ??? Data structure Offset Size Description 00h WORD segment of ??? (X, word at X:0136h set to X) 02h WORD segment of ??? (word at X:0124h set to this) 04h WORD number of paragraphs of ??? 06h 3 WORDs ??? (copied to X:0000h) 0Ch WORD ??? AX = 1403h add ??? to list and ??? (execute func 1406h) ES:DI -> ??? structure added to end of ??? list (at least 31 bytes, DWORD at offset 06h used for storing pointer to next struc, WORD at offset 00h seems to be a key or index) Return: CF clear AX = 1404h NOP AX = 1405h remove ??? from ??? list BX = key??? Return: CF clear AX = 1406h ??? ??? Return: CF clear ??? AX = 1407h ??? ??? Return: CF clear ??? AX = 1408h ??? ??? Return: CF clear ??? AX = 1409h ??? ??? Return: CF clear ??? AX = 140Ah ??? BX = ??? Return: CF clear ??? AX = 140Bh ??? BX = ??? Return: CF clear SI = segment of 256-byte buffer??? AH = 15h ??? ES:BX -> ??? or 0000h:0000h Return: CF clear ---QEMM v5.00+ --- AX = 1600h get memory access status ES:DI -> 256-byte buffer Return: ES:DI buffer filled Note: each byte of the buffer indicates the status of a 4K page (bit 0 set if read, bit 1 set if written) AX = 1601h set memory access status ES:DI -> 256-byte buffer containing access statuses (see above) AH = 17h get memory usage statistics ES:DI -> 81-byte buffer for memory statistics (see below) Return: CF clear ---QEMM v5.11+ --- AH = 18h check whether conventional memory mapped into address range ES:BX = starting address CX = number of 4K pages Return: CF clear AL = 00h one or more pages is remapped 01h all pages in range are conventional memory (physical address == virtual address) AH = 19h NOP Return: CF set AH = 1Ah I/O port access AL = subfunction 00h get byte from I/O port Return: BL = port value 01h send byte to I/O port BL = value to send 02h send byte to I/O port, get byte from following port BH = value to send Return: BL = value read 03h send bytes to two consecutive I/O ports BH = value for first I/O port (DX) BL = value for second I/O port (DX+1) DX = port number Return: CF clear AH = 1Bh MS Windows 3 support AL = subfunction 00h get ??? ES:DI -> buffer for ??? data structure Return: CF set on error CF clear if successful Data structure: Offset Size Description 00h DWORD pointer to ??? 04h BYTE ??? (v6.00 sets to 01h) 05h BYTE ??? (v6.00 sets to 00h or 0Bh) SeeAlso: INT 21/AX=4402h"QEMM" 01h ??? Return: CF set on error CF clear if successful 02h ??? Return: CF set on error CF clear if successful 03h MS Windows initializing CX = segment from which Windows init broadcast made??? DL = Windows startup flags??? DI = Windows version number (major in upper byte) Return: ??? SeeAlso: INT 2F/AX=1605h 04h MS Windows terminating Return: CF clear 05h determine whether program is driver??? DS:DX -> ASCIZ filename Return: CF clear AL = 01h if string ends in ".DRV" = FFh if string ends in "GDI.EXE" = 00h otherwise 06h ??? CX = length of data pointed at by DS:DX DS:DX -> ??? Return: CF clear 07h BUG: QEMM 6.00-6.03 accept this and branch randomly else Return: CF set AH = 1Ch protected-mode hardware interrupt handlers ??? AL = subfunction 00h restore??? IRQ0-7 handlers 01h set??? IRQ0-7 handlers ES:DI -> 8 DWORDs containing ??? 02h restore??? IRQ8-15 handlers 03h set??? IRQ8-15 handlers ES:DI -> 8 DWORDs containing ??? BUG: although the jump table only contains four entries, QEMM 6.00 will attempt to use it for any value of AL between 00h and 2Ah, thus branching unpredictably for AL=04h-2Ah ---QEMM v6.00+ --- AH = 1Dh Stealth interrupts AL = subfunction 00h switch to pre-Stealth interrupt vector table Note: also switches VGA Save table pointer (0040h:00A8h) and overwrites the vectors currently assigned for use by the two interrupt controllers (see INT 67/AX=DE0Ah) with the vectors for INT 08-0F and 70-77 (to avoid crashing the system). 01h restore user interrupt vector table Notes: interrupts should be disabled around the AX=1D00h and AX=1D01h calls because QEMM does not modify the memory maps to map in ROM, so an interrupt could be disastrous clears any pending IRQ7 at end of function else Return: CF set AH = 1Eh Stealth information AL = subfunction 00h get Stealth configuration Return: BL = flags bit 0: conventional memory sorted bit 1: conventional memory filled bit 2: ??? bit 3: ??? bit 4: expanded memory is in use bit 5: ??? BH = ??? (always 00h for v6.00) CL = stealth type (00h none,46h Frame,4Dh Map) CH = ??? (zero/nonzero important) DX = ??? (always 0000h for v6.00) SI = ??? (always 0000h for v6.00) DI = ??? (always 0000h for v6.00) 01h get number of Stealth'ed ROMs Return: CF clear BX = number of Stealth'ed ROMs 02h get Stealth'ed ROM info ES:DI -> buffer for Stealth ROM info (see below) Return: CF clear BX = number of Stealth'ed ROMs ES:DI buffer filled else Return: CF set AH = 1Fh page table manipulation AL = subfunction 00h get page table entry CX = page number Return: EDX = page table entry CF clear 01h set page table entry CX = page number EDX = page table entry Return: CF clear SeeAlso: function 1008h else Return: CF set AH = 20h asynchronous disk access support??? AL = subfunction 00h get ??? Return: CF clear BL = flags bit 7: ??? (set if Stealth:F or :M active) bit 0: ??? 01h set ??? BL = ??? (bit 0 only) Return: CF clear else Return: CF set AH = 21h Stealth support AL = subfunction 00h copy data from Stealthed address space DS:SI -> start address of hidden memory to copy ES:DI -> buffer for copied data ECX = number of bytes to copy Return: CF clear if successful CF set on error (DS:SI < C000h:0000h or DS:SI + ECX > 1M) else Return: CF set ---QEMM v6.03 only--- AH = 22h DESQview/X support AL = subfunction 00h get ??? Return: CF clear ES:DI -> ??? 01h set ??? ES:DI -> ??? or 0000h:0000h Return: CF clear if successful CF set on error other Return: CF set Format of QEMM 6.0 memory statistics: Offset Size Description 00h BYTE 01h if Shadow RAM found, 00h otherwise 01h DWORD initial conventional memory in bytes 05h DWORD initial extended memory in bytes 09h DWORD initial expanded memory in bytes 0Dh DWORD initial "top" or "shadow" memory in bytes 11h DWORD Unavailable conventional memory in bytes 15h DWORD Unavailable extended memory in bytes 19h DWORD Unavailable expanded memory in bytes 1Dh DWORD Unavailable "top" or "shadow" memory in bytes Add to offset 49h for Total unavailable top/shadow. 21h DWORD QEMM code size in bytes 25h DWORD QEMM data size in bytes 29h DWORD bytes used for TASKS= 2Dh DWORD DMA buffer size 31h DWORD bytes used for MAPS= 35h DWORD bytes of high RAM 39h DWORD bytes used by mapped ROMs 3Dh DWORD bytes of conventional memory provided by QEMM 41h DWORD bytes of extended memory NOT converted by QEMM (EXT=xxx) 45h DWORD bytes of EMS/XMS pool memory provided by QEMM 49h DWORD Unavailable "top" or "shadow" memory in bytes Add to offset 1Dh for Total unavailable top/shadow. 4Dh DWORD conventional memory overhead in bytes (set to 0 by QEMM.COM prior to call) Format of Stealth ROM info [array]: Offset Size Description 00h WORD starting segment of ROM 02h WORD length of ROM in paragraphs ----------67DE01----------------------------- INT 67 - Virtual Control Program Interface - GET PROTECTED MODE INTERFACE AX = DE01h ES:DI -> 4K page table buffer DS:SI -> three descriptor table entries in GDT first becomes code segment descriptor, other two for use by main control program Return: AH = 00h successful DI -> first unused page table entry in buffer EBX -> protected mode entry point in code segment AH = nonzero failed Note: protected mode entry point may be called with AX=DE00h-DE05h and AX=DE0Ch (in each case, all other registers as appropriate for the function) SeeAlso: INT 2F/AX=1687h,INT 67/AH=3Fh QEMM v6.03 protected mode entry point may also be called with: AX = DF00h ??? ??? Return: ??? AX = DF01h ??? ??? Return: ??? ----------71--------------------------------- INT 71 - IRQ9 - REDIRECTED TO INT 0A BY BIOS Notes: may be masked by setting bit 1 on I/O port A1h the default BIOS handler invokes INT 0A for compatibility, since the pin for IRQ2 on the PC expansion bus became the pin for IRQ9 on the AT expansion bus. under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process SeeAlso: INT 0A,INT 59 ----------74--------------------------------- INT 74 - IRQ12 - POINTING DEVICE (PS) Notes: may be masked by setting bit 4 on I/O port A1h under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process SeeAlso: INT 33,INT 5C ----------75--------------------------------- INT 75 - IRQ13 - MATH COPROCESSOR EXCEPTION (AT and up) redirected to INT 02 by the BIOS, for compatibility with the PC Notes: may be masked by setting bit 5 on I/O port A1h not all clones wire the coprocessor to generate this IRQ; some systems generate an NMI (see INT 02) or assert the -ERROR pin on the CPU (see INT 10"COPROCESSOR") under DESQview, only the INT 15h vector and BASIC segment address (the word at 0000h:0510h) may be assumed to be valid for the handler's process SeeAlso: INT 10"COPROCESSOR",INT 5D ----------BE--------------------------------- INT BE - DESQview/X - ??? Note: points at an IRET SeeAlso: INT 15/AX=BFDEh/BX=0006h,INT 63"DESQview" --------------------------------------------- This compilation is Copyright (c) 1989,1990,1991,1992,1993 Ralf Brown --------------------------------------------- ARPA: ralf@cs.cmu.edu UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf BIT: ralf%cs.cmu.edu@carnegie FIDO: Ralf Brown 1:129/26.1 or post a message to me in the DR_DEBUG echo (I probably won't see it unless you address it to me) CIS: >INTERNET:ralf@cs.cmu.edu