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Interrupt List, part 6 of 8 This compilation is Copyright (c) 1989,1990,1991,1992,1993 Ralf Brown --------F-2FC0------------------------------- INT 2F - MTEZ XpressFax Hardware TSR (CLASS2) - API AH = C0h AL = function code (01h to 15h) Return: ??? SeeAlso: AX=C000h"MTEZ",AX=CB00h"MTEZ" --------N-2FC000----------------------------- INT 2F - Novell ODI Link Support Layer (LSL.COM) - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed DX:BX -> FAR entry point (see below) ES:SI -> signature string "LINKSUP$" Notes: LSL.COM may use any multiplex number between C0h and FFh; it searches for itself in that range, and installs using the first free multiplex number in the range if not already loaded. on return, ES = DX for LSL v1.10; LSL makes use of this in its search for a previous installation Call LSL entry point with: BX = 0001h "Request MLID Registration" ES:SI -> ??? ??? Return: AX = completion code (see below) DS:DI -> LSL information block BX = 0002h get support entry points ES:SI -> buffer for entry point record (see below) Return: ES:SI buffer filled BX = 0003h "Request MLID API entry point" Return: ES:SI -> MLID API entry point (call with BX=function 00h-10h, not range-checked) Notes: LSL v1.10 executes BX=0003h for all other values of BX see "Novell LAN Driver Developer's Guide, Volume III" for details of function 0001h Values for completion code: 0000h successful 8001h out of resources 8002h bad parameter 8003h no more items 8004h item not present 8005h failed 8006h receive overflow 8007h canceled 8008h bad command 8009h duplicate entry 800Ah no such handler 800Bh no such driver Format of entry point record: Offset Size Description 00h DWORD pointer to protocol support entry point in LSL (see below) 04h DWORD pointer to general support entry point in LSL (see below) Call protocol support entry point with: BX = function number 0000h ??? 0001h ??? 0002h ??? 0003h "ScheduleAESEvent" ES:SI -> AES ECB to be scheduled (see below for format) Return: ES,SI preserved 0004h "CancelAESEvent" ES:SI -> ECB to be cancelled (see below for format) Return: ES,SI preserved 0005h "GetIntervalMarker" Return: DX:AX = current interval marker in milliseconds all other registers preserved 0006h "RegisterStack" AX = logical board number ES:SI -> bound stack info structure (see below) Return: BX = assigned Stack ID if AX=0000h 0007h "DeRegisterStack" AX = protocol stack's assigned Stack ID 0008h "RegisterDefaultStack" AX = logical board number ES:SI -> stack info structure (see below) 0009h "DeRegisterDefaultStack" AX = logical board number 000Ah "RegisterPrescanStack" AX = logical board number ES:SI -> stack info structure (see below) 000Bh "DeRegisterPrescanStack" AX = logical board number 000Ch "SendPacket" ES:SI -> send ECB Return: interrupts disabled 000Dh ??? 000Eh ??? 000Fh ??? 0010h "GetStackIDFromName" ES:SI -> counted NUL-terminated protocol name (max 15 chars) Return: BX = Stack ID if AX=0000h 0011h "GetPIDFromStackIDBoard" AX = Stack ID for protocol CX = logical board number ES:SI -> 6-byte buffer for protocol ID 0012h "GetMLIDControlEntry" AX = logical board number Return: ES:SI -> MLID control handler (see below) if AX=0000h 0013h "GetProtocolControlEntry" AX = Stack ID or FFFEh Prescan stack CX = logical board number FFFFh default protocol CX = logical board number Return: ES:SI -> protocol stack control entry point if AX=0000h (see below) 0014h "GetLSLStatistics" Return: AX = 0000h (successful) ZF set ES:SI -> LSL statistics table (see below) 0015h "BindStack" AX = protocol stack's assigned Stack ID CX = logical board number 0016h "UnbindStack" AX = protocol stack's assigned Stack ID CX = logical board number 0017h "AddProtocolID" AX = frame type ID code ES:SI -> 6-byte protocol ID CX:DI -> counted NUL-terminated short protocol name (max 15 ch) 0018h "RelinquishControl" Return: after LSL performs any necessary background processing 0019h "GetLSLConfiguration" Return: AX = 0000h (successful) ZF set ES:SI -> LSL configuration table (see below) 001Ah "GetTickMarker" Return: AX = number of 55ms ticks since LSL loaded BX destroyed Return: AX = completion code (see above) ZF set if successful SS:SP, DS, BP preserved; most other registers may be destroyed Call general support entry point with: BX = function number 0000h "Allocate Memory" (obsolete) always returns AX=8008h (BAD_COMMAND) 0001h "Free Memory" (obsolete) always returns AX=8008h (BAD_COMMAND) 0002h "Realloc Memory" (obsolete) always returns AX=8008h (BAD_COMMAND) 0003h "Memory Statistics" (obsolete) always returns AX=8008h (BAD_COMMAND) 0004h "Add Memory To Pool" (obsolete) always returns AX=8008h (BAD_COMMAND) 0005h "AddGeneralService" ES:SI -> General Service Control Block (see below) 0006h "RemoveGeneralService" ES:SI -> General Service Control Block (see below) 0007h "GetNETcfgPath" Return: AX = 0000h (successful) DS:DX -> ASCIZ pathname for NET.CFG 0008h U ??? (in LSL 1.10) Return: AX = 0000h ES:SI -> ??? (a 22-byte data area) 000Ah "GetCriticalSectionStatus" Return: BX = total outstanding calls to "StartCriticalSection" 000Bh "ServiceEvents" interrupts disabled Return: interrupts disabled 0010h "GetStackECB" DS:DI -> Lookahead structure (see below) interrupts disabled Return: ES:SI -> ECB if successful (AX=0000h,ZF set) interrupts disabled 8000h-FFFFh reserved for user general service providers Return: AX = completion code (see above) ZF set if successful SS:SP, DS, BP preserved Call MLID control handler with: AX = logical board number BX = function number 0000h "GetMLIDConfiguration" Return: ES:SI -> MLID's configuration table if successful (see below for format) 0001h "GetMLIDStatistics" Return: ES:SI -> MLID's statistics table if successful (see below for format) 0002h "AddMulticastAddress" ES:SI -> 6-byte multicast address to add 0003h "DeleteMulticastAddress" ES:SI -> 6-byte multicast address to delete 0005h "MLIDShutdown" CX = type 0000h permanent (also deregisters from LSL) other temporary (shutdown hardware only) 0006h "MLIDReset" reinitialize board / restart from temp shutdown 0007h "Create Connection" (obsolete?) ??? 0008h "Delete Connection" (obsolete?) ??? 0009h "SetLookAheadSize" CX = requested lookahead size (00h-80h) 0010h "PromiscuousChange" CX = what to receive promiscuously bit 0: MAC frames bit 1: non-MAC frames 0011h "RegisterReceiveMonitor" CX = subfunction 0000h disable receive monitoring else enable receive monitoring ES:SI -> monitor receive routine ES:DI -> monitor transmit routine 0012h "Driver Poll" (obsolete?) ??? Return: AX = completion code (see above) ZF set if successful Note: not all boards/MLIDs support function 0010h; see bit 13 in the MLID mode flags field of the MLID's configuration table Call protocol stack control entry point with: BX = function number 0000h "GetProtocolStackConfiguration" Return: ES:SI -> protocol stack's configuration table (see below) 0001h "GetProtocolStackStatistics" Return: ES:SI -> protocol stack's statistics table (see below) 0002h "BindToMLID" CX = board number to bind to ES:SI -> implementation-dependant parameter string 0003h "UnBindFromMLID" CX = board number from which protocol should unbind ES:SI -> optional implementation-dependant parameter string 0004h "MLIDDeRegistered" CX = board number that has de-registered from LSL Return: AX = status 0000h successful else implementation-dependant error codes ZF set if successful SS:SP, DS, BP preserved Format of AES ECB: Offset Size Description 00h DWORD "AESLink" pointer used by LSL for list management 04h DWORD number of milliseconds to wait 08h DWORD "AESStatus" (is set to 00000000h when AES ESR is invoked) 0Ch DWORD -> function to be invoked when time expires ES:SI will point to this structure on entry, DS, BP, and SS:SP must be preserved. Format of LSL Configuration Table: Offset Size Description 00h BYTE major version of configuration table 01h BYTE minor version of configuration table (decimal, 0-99) 02h 8 BYTEs reserved 0Ah BYTE LSL major version (decimal) 0Bh BYTE LSL minor version (decimal, 0-99) ---LSL 1.0x --- 0Ch 14 BYTEs reserved ---LSL 1.10+ --- 0Ch WORD maximum number of boards which LSL can handle 0Eh WORD maximum number of protocol IDs which LSL can handle 10h 12 BYTES reserved Format of LSL Statistics Table: Offset Size Description 00h BYTE major version of statistics table format 01h BYTE minor version of statistics table format (decimal, 0-99) 02h WORD "GenericCounters" number of counters in static portion of table 04h DWORD "ValidCountersMask" bit mask indicating which generic counters are actually used. Bit 31 = TotalTxPackets, bit 30 is the next field, etc. 08h DWORD "TotalTxPackets" total SendPacket requests made 0Ch DWORD reserved 10h DWORD reserved 14h DWORD "AESEventsCount" number of completed AES events 18h DWORD "PostponedEvents" number of events postponed due to critical sections inside the MLIDs 1Ch DWORD "CancelAESFailures" number of times CancelAESEvent failed 20h DWORD reserved 24h DWORD reserved 28h DWORD "TotalRxPackets" total number of GetStackECB requests 2ch DWORD "UnclaimedPackets" total number of packets not consumed by a protocol stack 30h WORD "NumberCustom" number of custom variables that follow 32h N DWORDs custom counters N DWORDs -> CustomCounterStrN (one per custom counter) var length-prepended and NULL terminated string for Counter 0 ... var length-prepended and NULL terminated string for Counter N-1 Format of Protocol Stack Statistics Table: Offset Size Description 00h BYTE statistics table major version 01h BYTE statistics table minor version (decimal, 0-99) 02h WORD number of generic counters following 04h DWORD "ValidCountersMask" (bitmask, bit 31 is TotalTxPackets) 08h DWORD TotalTxPackets 0ch DWORD TotalRxPackets 10h DWORD IgnoredRxPackets 14h WORD number of custom counters 16h N DWORDs custom counters N DWORDs -> CustomCounterStrN (one per custom counter) var length-prepended and NULL terminated string for Counter 0 ... var length-prepended and NULL terminated string for Counter N-1 Format of Protocol Stack Configuration Table: Offset Size Description 00h BYTE configuration table major version 01h BYTE configuration table minor version (decimal, 0-99) 02h DWORD -> counted NUL-terminated long descriptive name for protocol 06h DWORD -> counted NUL-terminated short name for protocol (15 chars) 0Ah BYTE protocol stack major version 0Bh BYTE protocol stack minor version (decimal, 0-99) 0Ch 16 BYTEs reserved for future use Format of MLID Configuration Table: Offset Size Description 00h 26 BYTEs signature 'HardwareDriverMLID ' (8 spaces on end) 1ah BYTE configuration table major version 1bh BYTE configuration table minor version (decimal, 0-99) 1ch 6 BYTEs node address 22h WORD MLID mode flags (see below) 24h WORD board number 26h WORD board instance (if more than one of same board installed) 28h WORD maximum packet size 2Ah WORD BestDataSize 2Ch WORD WorstDataSize 2Eh DWORD -> counted NUL-terminated long name for NIC 32h DWORD -> counted NUL-terminated short name for NIC (8 chars max) 36h DWORD -> counted NUL-terminated Frame and Media type 3Ah WORD reserved (0000h) 3Ch WORD frame type ID 3Eh WORD TransportTime (milliseconds) 40h DWORD -> SourceRouteHandler for TokenRing. (Used by ROUTE.COM) 44h WORD lookahead size 46h WORD line speed (Mbps if high bit clear, else Kbps) 48h WORD QueueDepth 4Ch 6 BYTEs reserved (0) 54h BYTE driver major version 55h BYTE driver minor version (decimal, 0-99) 56h WORD flags bits 10-9: specialized multicast support 00 = Group addressing is default for medium 01 = Invalid 10 = Filter group address in MLID. 11 = Adapter filters group address. bit 2: supports Micro Channel cards bit 1: supports ISA cards bit 0: supports EISA cards 58h WORD send retries 5Ah DWORD ConfigTableLink 5Eh WORD MLID sharing flags (see below) 60h WORD slot number 62h WORD I/O address 1 64h WORD I/O range 1 66h WORD I/O address 2 68h WORD I/O range 2 6Ah DWORD memory address 1 6Eh WORD memory size 1 70h DWORD memory address 2 74h WORD memory size 2 76h BYTE interrupt line 1 77h BYTE interrupt line 2 78h BYTE DMA line 1 79h BYTE DMA line 2 Bitfields for MLID mode flags: bit 15 MLID supports Octet Bit Reversal bit 14 node address is non-canonical bit 13 promiscuous mode is supported bit 12-8 reserved bit 7 LDataSize field in LookAhead structure supported bit 6 raw send supported bit 5 MLID needs to be polled by LSL bit 4 reserved (0) bit 3 multicasting is supported bit 2 not currently used by DOS ODI, set to 0. bit 1 network card uses DMA. bit 0 RealDriverBit, always set to 1. Bitfields for MLID sharing flags: bit 8 NIC can share DMA2 bit 7 NIC can share DMA1 bit 6 NIC can share IRQ2 bit 5 NIC can share IRQ1 bit 4 NIC can share Memory2 bit 3 NIC can share Memory1 bit 2 NIC can share IO2 bit 1 NIC can share IO1 bit 0 MLID is currently shut down Format of MLID Statistics Table: Offset Size Description 00h BYTE driver statistics table major version 01h BYTE driver statistics table minor version (decimal, 0-99) 02h WORD number of generic counters (typically 13) 04h DWORD "ValidCountersMask" (bit mask, bit 31 is TotalTxCount) 08h DWORD TotalTxCount 0Ch DWORD TotalRxCount 10h DWORD NoECBAvailableCount 14h DWORD TxTooBigCount 18h DWORD TxTooSmallCount 1ch DWORD RxOverflowCount 20h DWORD RxTooBigCount 24h DWORD RxTooSmallCount 28h DWORD TxMiscCount 2ch DWORD RxMiscCount 30h DWORD TxRetryCount 34h DWORD RxChecksumErrorCount 38h DWORD RxMismatchCount 3Ch WORD number of custom counters 3Eh N DWORDs custom counters N DWORDs -> CustomCounterStrN (one per custom counter) var length-prepended and NULL terminated string for Counter 0 ... var length-prepended and NULL terminated string for Counter N-1 Format of bound stack info structure: Offset Size Description 00h DWORD -> protocol stack's short name (counted, NUL-terminated) 04h DWORD -> receive handler 08h DWORD -> control handler Format of stack info structure: Offset Size Description 00h DWORD -> receive handler 04h DWORD -> control handler Format of General Service Control Block: Offset Size Description 00h DWORD -> next GSCB (maintained internally by LSL) 04h DWORD -> entry point for general service handler 08h WORD command code for this general service (8000h-FFFFh) Note: the control block must not be altered or deallocated until the general service is removed Format of Lookahead structure: Offset Size Description 00h DWORD -> Media header 04h DWORD -> lookahead buffer 08h WORD length of lookahead buffer 0Ah 6 BYTEs protocol ID 10h WORD logical board number 12h WORD lookahead size --------f-2FC000----------------------------- INT 2F - FN32 32 character filename utilities - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed ES:DI -> signature string "FN32 32CHAR TSR" Program: FN32 is a TSR which supports 32 character filenames under PC/MS-DOS Note: the TSR intercepts INT 21 calls and performs filename substitution by managing dictionary files in each directory which contains long filenames --------F-2FC000BX444B----------------------- INT 2F - MTEZ XpressFax Hardware TSR (CLASS2) - INSTALLATION CHECK AX = C000h BX = 444Bh CX = 4A4Eh Return: AL = status 00h not installed, OK to install FFh installed BX = 646Bh CX = 6A6Eh Note: this TSR will use any free multiplex number from C0h to FFh SeeAlso: AH=C0h"MTEZ" --------V-2FC000----------------------------- INT 2F - AD-DOS - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed BX = 4144h ('AD') CX = 2D44h ('-D') DX = 4F53h ('OS') Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Note: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh SeeAlso: AX=C001h,AX=C003h,AX=C005h,AX=C007h,AX=C009h,AX=C020h --------V-2FC001ES0000----------------------- INT 2F - AD-DOS - GET RESIDENT CODE SEGMENT AX = C001h ES = 0000h Return: AL = 00h if successful ES = AD-DOS TSR Code Segment SeeAlso: AX=C000h"AD-DOS" --------V-2FC002----------------------------- INT 2F - AD-DOS - CHECK FOR NEW INPUT AX = C002h Return: AL = 00h if succesful BX = status 0000h no input since last check 0001h new input available Note: this call also resets the new-input flag SeeAlso: AX=C000h"AD-DOS",AX=C004h --------V-2FC003----------------------------- INT 2F - AD-DOS - SET MINUTES TO WAIT AX = C003h BX = minutes to wait before blanking screen Return: AL = 00h if successful Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Notes: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh this call also resets the delay timer SeeAlso: AX=C000h"AD-DOS",AX=C004h --------V-2FC004----------------------------- INT 2F - AD-DOS - GET MINUTES TO WAIT AX = C004h Return: AL = 00h if succesful BX = minutes to wait before blanking screen SeeAlso: AX=C000h"AD-DOS",AX=C003h --------V-2FC005----------------------------- INT 2F - AD-DOS - SET BLANKER STATUS AX = C005h BX = new state (0000h inactive, 0001h active) (default 0001h) Return: AL = 00h if successful SeeAlso: AX=C006h --------V-2FC006----------------------------- INT 2F - AD-DOS - GET BLANKER STATUS AX = C006h Return: AL = 00h if successful BX = current state of screen blanker (0000h inactive, 0001h active) Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Note: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh SeeAlso: AX=C000h"AD-DOS",AX=C005h --------V-2FC007----------------------------- INT 2F - AD-DOS - SET HOT KEY AX = C007h BX = hot key CL = hot key shift status Return: AL = 00h if successful SeeAlso: AX=C008h --------V-2FC008----------------------------- INT 2F - AD-DOS - GET CURRENT HOT KEY AX = C008h Return: AX = status 0000h successful BX = Hot Key CL = Hot Key Shift Status 0008h otherwise SeeAlso: AX=C000h"AD-DOS",AX=C007h --------V-2FC009----------------------------- INT 2F - AD-DOS - UNBLANK MONITOR AX = C009h Return: AL = 00h if successful Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Notes: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh this function works by simulating keyboard activity --------V-2FC00A----------------------------- INT 2F - AD-DOS - ??? AX = C00Ah Return: AX = status 0000h successful BH = ?? BL = ?? 000Ah failed --------V-2FC00B----------------------------- INT 2F - AD-DOS - ??? AX = C00Bh Return: AX = status 0000h successful 000Bh failed --------V-2FC00C----------------------------- INT 2F - AD-DOS - SET ??? INTERNAL FLAG TO 01h AX = C00Ch Return: AX = status 0000h successful 000Ch failed Program: AD-DOS is the DOS version of the After Dark screen blanker for MS Windows Note: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh --------V-2FC00E----------------------------- INT 2F - AD-DOS - SET PASSWORD STATUS AX = C00Eh BX = new state (0000h disabled, 0001h enabled) Return: ??? SeeAlso: AX=C000h"AD-DOS",AX=C00Fh --------V-2FC00F----------------------------- INT 2F - AD-DOS - GET PASSWORD STATUS AX = C00Fh Return: BX = current state (0000h disabled, 0001h enabled) SeeAlso: AX=C00Eh --------V-2FC020----------------------------- INT 2F - AD-DOS - GET AND RESET VxD API STATUS AX = C020h Return: AL = 00h if successful BX = VxD API Status 0000h no error 0001h error 0100h neither Windows 3.X enhanced mode nor Windows/386 2.x is running 0200h VM API entry point not found (VxD not installed) Notes: AH=C0h is the default multiplex number; if this is already in use, After Dark will try successive values up to AH=FFh this call resets the VxD API Status to zero SeeAlso: AX=1602h,AX=1607h --------V-2FC050----------------------------- INT 2F U - Explosiv 2.00 - INSTALLATION CHECK AX = C050h Return: AL = 51h if installed Program: Explosiv is a shareware animated screen blanker for DOS and Windows 3 by Reidar Gresseth and Chris Hook Note: AH=C0h is the default multiplex number, but may be reconfigured to any value from C0h to C9h SeeAlso: AX=C052h --------V-2FC052----------------------------- INT 2F U - Explosiv 2.00 - UNINSTALL AX = C052h DX:BX = address to return to on successful uninstall Return: at specified address if successful AL = 53h on error Note: specified return address must have the segment of the caller's PSP SeeAlso: AX=C050h --------V-2FC054----------------------------- INT 2F U - Explosiv 2.00 - GET ??? AX = C054h Return: AL = ??? Note: returns value set by AX=C057h SeeAlso: AX=C057h --------V-2FC055----------------------------- INT 2F U - Explosiv 2.00 - SET BLANKING INTERVAL AX = C055h BX = new interval in clock ticks --------V-2FC056----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C056h BL = ??? --------V-2FC057----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C057h BL = ??? SeeAlso: AX=C054h --------V-2FC058----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C058h BL = ??? --------V-2FC059----------------------------- INT 2F U - Explosiv 2.00 - CLEAR ??? AX = C059h Note: clears flag set by AX=C05Ah SeeAlso: AX=C05Ah --------V-2FC05A----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C05Ah BL = ??? Note: sets flag cleared by AX=C059h then stores BL SeeAlso: AX=C059h,AX=C05Bh --------V-2FC05B----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C05Bh BL = ??? SeeAlso: AX=C05Ah,AX=C05Ch --------V-2FC05C----------------------------- INT 2F U - Explosiv 2.00 - SET ??? AX = C05Ch BL = ??? SeeAlso: AX=C05Bh --------v-2FC900BP0000----------------------- INT 2F U - ThunderByte??? - INSTALLATION CHECK AX = C900h BP = 0000h Return: AL = FFh if installed BP >= 0014h Note: called by TBSCANX SeeAlso: AX=C987h,AX=CA00h --------v-2FC987----------------------------- INT 2F U - ThunderByte??? - DISINFECT FILE??? AX = C987h BX:DX -> filename BX:CX -> virus name Return: AX = status 0000h successful??? Note: called by TBSCANX SeeAlso: AX=CA00h ----------2FC9FF----------------------------- INT 2F C - STACKMAN - INSTALLATION BROADCAST AX = C9FFh BL = BCD version number CX = number of stacks DX = stack size in bytes Notes: called by STACKMAN when it goes resident to inform interested TSRs that its API is available the installation check consists of testing for the string "STACKXXX" at offset 0Ah from the INT B4 handler SeeAlso: INT B4"STACKMAN",INT B5"STACKMAN" Index: installation check;STACKMAN --------v-2FCA00BX5442----------------------- INT 2F - TBSCANX - INSTALLATION CHECK AX = CA00h BX = 5442h ('TB') Return: AL = 00h not installed = FFh installed BX = 7462h ('tb') if BX was 5442h on entry Program: TBSCANX is a resident virus scanning module by Frans Veldman. Note: programs may perform virus checks on themselves, other program files, or their data files by invoking the TBSCANX API. SeeAlso: AX=4653h,AX=C900h --------v-2FCA01----------------------------- INT 2F - TBSCANX - GET STATUS AX = CA01h Return: AH = BCD version number (v2.2+) = CAh for versions before 2.2 AL = state (00h = disabled, 01h = enabled) CX = number of signatures which will be searched ---v2.0--- BX = EMS handle, 0000h if not using EMS ---v2.3+--- BX = segment of swap area, 0000h if not swapped DX = EMS or XMS handle (XMS handle if BX=0000h), FFFFh if not using EMS SeeAlso: AX=CA02h --------v-2FCA02----------------------------- INT 2F - TBSCANX - SET STATE AX = CA02h BL = new state (00h = disabled, 01h = enabled) SeeAlso: AX=CA01h --------v-2FCA03----------------------------- INT 2F - TBSCANX - SCAN BUFFER AX = CA03h CX = size of buffer DS:DX -> buffer containing data to scan Return: CF clear if no virus signatures found BX,ES destroyed CF set if signature found ES:BX -> ASCIZ virus name (v2.3+) DS:DX -> ASCIZ virus name (v2.0) AX,CX,DX destroyed (v2.3+) all other registers except CS:IP and SS:SP destroyed (v2.0) SeeAlso: AX=CA04h --------v-2FCA04----------------------------- INT 2F - TBSCANX - SCAN FILE AX = CA04h DS:DX -> filename Return: CF clear if no virus signatures found BX,ES destroyed CF set if signature found ES:BX -> ASCIZ virus name AX,CX,DX destroyed Note: this function requires at least 4K free memory SeeAlso: AX=CA03h --------U-2FCAFEBX0000----------------------- INT 2F U - THELP v3.0 - INSTALLATION CHECK AX = CAFEh BX = 0000h Return: BX = segment of resident code if installed = 0000h if not installed SeeAlso: AX=5453h --------F-2FCB00----------------------------- INT 2F - Communicating Applications Specification - INSTALLATION CHECK AX = CB00h Return: AL = status 00h not installed, OK to install 01h not installed, not OK to install FFh installed Note: AH = CBh is the default identifier, but may be reconfigured SeeAlso: AH=2Ah,AX=8000h"FaxBIOS",AX=CB0Eh,AX=CBDCh --------F-2FCB00BX4D53----------------------- INT 2F - MTEZ XpressFax CASMGR - INSTALLATION CHECK AX = CB00h BX = 4D53h CX = 4949h Return: AL = status 00h not installed, OK to install 01h not installed, not OK to install FFh installed BX = 6D73h CX = 6969h Note: this function is equivalent to the standard CASMGR installation check, but uses the additional magic values to identify which CAS is installed SeeAlso: AH=2Ah,AX=8000h"FaxBIOS",AX=C000h"MTEZ",AX=CB0Eh,AX=CB16h --------F-2FCB01----------------------------- INT 2F - Communicating Applications Specification - SUBMIT A TASK AX = CB01h DS:DX -> ASCIZ name of task control file Return: AX >= 0: event handle < 0: error code Note: files needed for an event must be kept until task is complete or error SeeAlso: AX=CB0Bh,AX=CB15h Error codes (AH = class, AL = subcode, value passed back is 2's complement): Class 00h --- FAX warnings Subcode 00h no error 02h bad scanline count 03h page sent with errors, could not retransmit 04h received data lost 05h invalid or missing logo file 06h filename does not match nonstandard format (NSF) header 07h file size does not match NSF header Class 01h --- DOS warnings (data was sent) Subcode 01h invalid function 05h access denied 06h invalid handle others see INT 21/AH=59h Class 02h --- fatal errors (data not sent) Subcode 00h multiplex handler failed 01h unknown command 02h bad event handle 03h FIND NEXT attempted before FIND FIRST 04h no more events 07h invalid queue type 08h bad control file 09h communication board busy 0Ah invalid command parameter 0Bh can't uninstall resident code 0Ch file exists 80h unknown task type 81h bad phone number 82h bad .PCX file header 83h unexpected EOF 84h unexpected disconnect 85h too many dialing retries 86h no file specified for send 87h communication board timeout 88h received too many pages (>1023) of data 89h manual connect initiated too long ago 8Ah hardware command set error 8Bh bad NonStandard Format (NSF) header file Class 03h --- fatal DOS errors Subcode 02h file not found 03h path not found others see INT 21/AH=59h Class 04h --- FAX errors Subcode 01h remote unit not Group 3 compatible 02h remote unit did not send capabilities 03h other FAX machine incompatible 04h other FAX incapable of file transfers 05h exceeded retrain or FAX resend limit 06h line noise or failure to agree on bit rate 07h remote disconnected after receiving data 08h no response from remote after sending data 09h remote's capabilities incompatible 0Ah no dial tone (v1.2+) 0Bh invalid response from remote unit after sending data 0Dh phone line dead or remote unit disconnected 0Eh timeout while waiting for secondary dial tone (v1.2+) 11h invalid command from remote after receiving data 15h tried to receive from incompatible hardware 5Ch received data overflowed input buffer 5Dh remote unexpectedly stopped sending data 5Eh other FAX machine jammed (no data sent) 5Fh remote took too long to send fax scan line 63h can't get through to remote unit 64h user canceled event Class 05h --- application-specific (v1.2+) ---Intel FAXPOP.EXE Subcode 00h tried to send while in graphics mode 01h insufficient disk space 02h internal buffer overflow Class 06h --- CAS implementation-specific (v1.2+) --------F-2FCB02----------------------------- INT 2F - Communicating Applications Specification - ABORT CURRENT EVENT AX = CB02h Return: AX >= 0: event handle of aborted event < 0: error code (see AX=CB01h) Note: termination could take up to 30 seconds SeeAlso: AX=CB08h,AX=CB10h --------F-2FCB05----------------------------- INT 2F - Communicating Applications Specification - FIND FIRST QUEUE ENTRY AX = CB05h CX = status of events to find 0000h successful completion 0001h waiting to be processed 0002h number has been dialed 0003h connection established, sending 0004h connection established, receiving 0005h event aborted FFFFh find any event, regardless of status other negative values, match error code DH = direction 00h chronological order, earliest to latest 01h reverse chronological order, latest to earliest DL = queue to search 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful BX = event handle for found event < 0 error code (see AX=CB01h) SeeAlso: AX=CB06h,AX=CB07h --------F-2FCB06----------------------------- INT 2F - Communicating Applications Specification - FIND NEXT QUEUE ENTRY AX = CB06h DL = queue to search 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful BX = event handle for found event < 0 error code (see AX=CB01h) Note: direction of search is same as preceding FIND FIRST call SeeAlso: AX=CB05h --------F-2FCB07----------------------------- INT 2F - Communicating Applications Specification - OPEN FILE AX = CB07h BX = event handle from find (AL=05h,06h) or submit task (AL=01h) CX = receive file number (ignored for task queue and log queue) 0000h open receive control file N open Nth received data file DL = queue 00h task queue 01h receive queue control file or received file, as given by CX 02h log queue 03h group file in task queue (v1.2+) 04h group file in log queue (v1.2+) Return: AX = 0000h successful BX = DOS file handle for requested file < 0 error code (see AX=CB01h) Note: the returned file handle has been opened in read-only mode and should be closed with INT 21/AH=3Eh after use SeeAlso: AX=CB01h,AX=CB05h,AX=CB14h --------F-2FCB08----------------------------- INT 2F - Communicating Applications Specification - DELETE FILE AX = CB08h BX = event handle CX = receive file number 0000h delete ALL received files and receive control file N delete Nth received file DL = queue 00h delete control file in task queue and corresponding group file if it exists 01h delete file in receive queue, as given by CX 02h delete control file in log queue (individual deletions not recommended, to maintain integrity of log) and corresponding group file if it exists Return: AX = 0000h successful < 0 error code (see AX=CB01h)\ SeeAlso: AX=CB02h,AX=CB09h --------F-2FCB09----------------------------- INT 2F - Communicating Applications Specification - DELETE ALL FILES IN Q AX = CB09h DL = queue 00h delete all control files in task queue, including all group files 01h delete all files in receive queue 02h delete all control files in log queue, including all group files Return: AX = 0000h successful < 0 error code (see AX=CB01h) SeeAlso: AX=CB08h --------F-2FCB0A----------------------------- INT 2F - Communicating Applications Specification - GET EVENT DATE AX = CB0Ah BX = event handle DL = queue 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful CX = year DH = month DL = day < 0 error code (see AX=CB01h) SeeAlso: AX=CB0Bh,AX=CB0Ch --------F-2FCB0B----------------------------- INT 2F - Communicating Applications Specification - SET TASK DATE AX = CB0Bh BX = event handle (task event only) CX = year DH = month DL = day Return: AX = 0000h successful < 0 error code (see AX=CB01h) Note: setting a task's date and time to before the current date and time causes it to execute immediately SeeAlso: AX=CB01h,AX=CB0Ah,AX=CB0Dh --------F-2FCB0C----------------------------- INT 2F - Communicating Applications Specification - GET EVENT TIME AX = CB0Ch BX = event handle DL = queue 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful CH = hour CL = minute DH = second DL = 00h < 0 error code (see AX=CB01h) SeeAlso: AX=CB0Ah,AX=CB0Dh --------F-2FCB0D----------------------------- INT 2F - Communicating Applications Specification - SET TASK TIME AX = CB0Dh BX = event handle (task events only) CH = hour CL = minute DH = second DL unused Return: AX = 0000h successful < 0 error code (see AX=CB01h) Note: setting a task's date and time to before the current date and time causes it to execute immediately SeeAlso: AX=CB0Bh,AX=CB0Ch,AX=CB10h --------F-2FCB0E----------------------------- INT 2F - Communicating Applications Specification - GET EXTERNAL DATA BLOCK AX = CB0Eh DS:DX -> 256-byte buffer Return: AX = 0000h successful buffer filled < 0 error code (see AX=CB01h) Format of external data block: Offset Size Description 00h BYTE CAS major version 01h BYTE CAS minor version 02h 68 BYTEs ASCIZ path to directory containing CAS software, ends in slash 46h 13 BYTEs ASCIZ name of current phonebook (in CAS directory) 53h 13 BYTEs ASCIZ name of current logo file (in CAS directory) 60h 32 BYTEs ASCIZ default sender name 80h 21 BYTEs ASCIZ CCITT identification of fax device 95h 107 BYTEs reserved --------F-2FCB0F----------------------------- INT 2F - Communicating Applications Specification - GET/SET AUTORECEIVE AX = CB0Fh DL = subfunction 00h get current autoreceive state 01h set autoreceive state DH = number of rings before answer, 00h = never Return: AX = 0000h autoreceive disabled = N number of rings before answer < 0 error code (see AX=CB01h) --------F-2FCB10----------------------------- INT 2F - Communicating Applications Specification - GET CURRENT EVENT STATUS AX = CB10h DS:DX -> 512-byte buffer Return: AX = 0000h successful BX = event handle of current event or negative error code if no current event buffer filled < 0 error code (see AX=CB01h) SeeAlso: AX=CB02h,AX=CB0Dh Format of status area: Offset Size Description 00h BYTE event type 00h send 01h receive 02h polled send 03h polled receive 04h to 7Fh reserved FFh serious hardware error 01h BYTE transfer type 00h 200x200 dpi, FAX mode 01h 100x200 dpi, FAX mode 02h file transfer mode 03h to 7Fh reserved 02h WORD event status 0000h completed successfully 0001h waiting 0002h number dialed 0003h connected, sending 0004h connected, receiving 0005h aborted 0006h to 007Fh reserved 0080h to 7FFFh application-specific events 8000h to FFFFh error codes 04h WORD event time (packed DOS time format, see INT 21/AX=5700h) 06h WORD event date (packed DOS date format, see INT 21/AX=5700h) 08h WORD number of files to transfer, max 7FFFh 0Ah WORD offset of file transfer record 0Ch 47 BYTEs ASCIZ phone number to call 3Bh 64 BYTEs ASCIZ application-specific tag string 7Bh BYTE reserved (00h) 7Ch BYTE connect time, seconds 7Dh BYTE connect time, minutes 7Eh BYTE connect time, hours 7Fh DWORD total number of pages in all files 83h DWORD pages already transmitted 87h WORD number of files already transmitted 89h BYTE cover page flag 00h don't transmit cover page 01h transmit cover page 02h to 7Fh reserved 8Ah WORD total number of transmission errors 8Ch 78 BYTEs reserved (zeros) DAh 21 BYTEs ASCIZ remote FAX's CCITT identification EFH 32 BYTEs ASCIZ destination name 10Fh 32 BYTEs ASCIZ sender name 12Fh 80 BYTEs filename of PCX logo file (max 1780x800 pixels) 17Fh 128 BYTEs file transfer record for current event (see below) Format of file transfer record: Offset Size Description 00h BYTE file type (ignored unless FAX) 00h ASCII 01h PCX 02h DCX 03h to 7Fh reserved 01h BYTE text size for ASCII FAX file 00h = 80 columns by 66 lines (11 inches) 01h = 132 columns by 88 lines (11 inches) 02h to 7Fh reserved 02h BYTE status of file 00h untouched 01h opened 02h moved 03h deleted 04h not yet received 05h to 7Fh reserved 03h DWORD bytes already transmitted 07h DWORD file size in bytes 0Bh WORD pages alread transmitted 0Dh WORD number of pages in file 0Fh 80 BYTEs ASCIZ filename 5Fh BYTE 1/8 inch page length if page length below set to 01h through 7Fh, this value specifies additional 1/8 inch increments to page length 60h BYTE page length 00h = 11 inches 01h to 7Fh = page length is this number of inches plus value of 1/8 inch field above 80h to FEh reserved FFh = ASCII pages ending with formfeed 61h 31 BYTEs reserved (zeros) --------F-2FCB11----------------------------- INT 2F - Communicating Applications Specification - GET QUEUE STATUS AX = CB11h DL = queue to get status of 00h task queue 01h receive queue 02h log queue 03h send events (v1.2+) 04h receive events (v1.2+) Return: AX >= 0 total number of changes made to queue, modulo 32768 BX = number of control files currently in queue CX = number of received files (zero for task and log queues) AX < 0 error code (see AX=CB01h) SeeAlso: AX=CB12h --------F-2FCB11DL03------------------------- INT 2F - Communicating Applications Spec v1.2+ - GET NUMBER OF SEND EVENTS AX = CB11h DL = 03h Return: AX = number of successful sends since resident manager started BX = number of unsuccessful sends, including warnings SeeAlso: AX=CB11h/DL=04h --------F-2FCB11DL04------------------------- INT 2F - Communicating Applications Spec v1.2+ - GET NUMBER OF RECEIVE EVENTS AX = CB11h DL = 04h Return: AX = number of received file events since resident manager started BX = number of received FAX events SeeAlso: AX=CB11h/DL=03h --------F-2FCB12----------------------------- INT 2F - Communicating Applications Specification - GET HARDWARE STATUS AX = CB12h DS:DX -> 128-byte status buffer Return: AX = 0000h successful buffer filled with hardware-dependent status information < 0 error code (see AX=CB01h) SeeAlso: AX=CB10h,AX=CB11h Format of status buffer for Intel Connection CoProcessor: Offset Size Description 00h BYTE bit flags bit 7: hardware busy sending or receiving bit 6: last page of data bit 5: no data on current page bit 4: retransmit request for current page being transmitted bit 3: NSF mode active bits 2-0: reserved 01h BYTE number of kilobytes of free buffer space 02h BYTE page buffer status bit 7: Connection CoProcessor has documents to send bits 6-0: number of pages in buffer 03h BYTE number of retries left for dialing number 04h BYTE page number to retransmit 05h BYTE communications status bit 7: originating call bit 6: FAX message to be sent bit 5: on line bit 4: ring detected and receive enabled bit 3: buffer dumped on receive bits 2-0: hardware sequence state 000 idle 001 dial 010 answer 011 transmit 100 receive 101 pre-message 110 post-message 111 disconnect 06h BYTE baud rate bit 7: reserved bits 6-4: baud rate 000 = 300 baud (V.21 SDLC or HDLC mode) 100 = 2400 baud (V.27 ter) 101 = 4800 baud (V.27 ter) 110 = 7200 baud (V.29) 111 = 9600 baud (V.29) bits 3-0: reserved, should be 0110 07h 3 BYTEs reserved 0Ah BYTE hardware status bit 7: modem option installed bit 6: Connection CoProcessor has control of DAA (not latched) bit 5: on line (not latched) bit 4: ring detected (not latched) bit 3: data in command buffer (not latched) bit 2: set if using DMA channel 1, clear if using DMA channel 3 bit 1: line length compensation bit 1 set (not latched) bit 0: line length compensation bit 0 set (not latched) 0Bh BYTE switch states bit 7: reserved bit 6: unused bit 5: spare switch open bit 4: FAX ADR1 switch open bit 3: FAX ADR0 switch open bit 2: alternate interrupt switch open bit 1: COM SEL 1 switch open bit 0: COM SEL 0 switch open Note: valid combinations of bits 0-2 are 000 COM2 IRQ3 IObase 2F8h 001 COM1 IRQ4 IObase 3F8h 010 COM4 IRQ3 IObase 2E8h 011 COM3 IRQ4 IObase 3E8h 110 COM4 IRQ2 IObase 2E8h 111 COM3 IRQ5 IObase 3E8h 0Ch BYTE bit flags bit 7: reserved bit 6: auxiliary relay forced ON bit 5: modem select relay forced ON bit 4: offhook relay forced ON bit 3: 9600 bps enabled bit 2: 7200 bps enabled bit 1: 4800 bps enabled bit 0: 2400 bps enabled 0Dh BYTE reserved 0Eh WORD error count (only valid while busy, reset when idle) 10h DWORD size of nonstandard format (NSF) file in bytes 14h BYTE 'A' if Connection CoProcessor board present 15h 9 BYTEs reserved 1Eh 21 BYTEs ASCIZ CCITT identification 33h 77 BYTEs reserved Format of status buffer for Intel SatisFAXtion board: Offset Size Description 00h BYTE connection status flags bit 7: busy in T.30 CCITT fax protocol bit 6: data on current page/file (only used for block xfers) bit 5: retransmission of last page requested bit 4: in file transfer mode bit 3: data in buffer bit 2: data buffer dumped on receive bit 1: 200x100 dpi resolution instead of 200x200 dpi bit 0: data modem in use, FAX image modem not available 01h BYTE board state bit 7: reserved bit 6: handset jack active, data and FAX modems not available bits 5-3: current bit rate 000 300 bps (V.21 HDLC) 100 2400 bps (V.27 ter) 101 4800 bps (V.27 ter) 110 7200 bps (V.29) 111 9600 bps (V.29) bits 2-0: T.30 CCITT protocol state 000 idle 001 dialing 010 answering 011 transmitting 100 receiving 101 pre-message 110 post-message 111 disconnect 02h BYTE number of KB free in buffer 03h BYTE number of pages or files in buffer 04h BYTE number of redials remaining on current number 05h BYTE FAX page number to retransmit 06h BYTE current page/file in block transfer 07h BYTE number of rings received (only if auto-answer enabled) 08h WORD error count 0Ah DWORD length of file being transferred 0Eh 6 BYTEs reserved 14h BYTE 'B' is SatisFAXtion board present 15h 13 BYTEs ASCIZ transfer agent name 22h 5 BYTEs ASCIZ transfer agent version number 27h 13 BYTEs ASCIZ resident loader name 34h 5 BYTEs ASCIZ resident loader version number 39h 21 BYTEs ASCIZ remote CSID 4Eh 13 BYTEs ASCIZ resident manager name 5Bh 5 BYTEs ASCIZ resident manager version number 60h 32 BYTEs reserved Note: the Intel Connection CoProcessor and SatisFAXtion may be distinguished by examining the byte at offset 14h --------F-2FCB13DL00------------------------- INT 2F - Communicating Applications Specification - GET DIAGNOSTICS RESULTS AX = CB13h DL = 00h Return: AX = 0040h in progress >= 0 passed < 0 hardware-dependent failure code (see below) SeeAlso: AX=CB13h/DL=01h Intel Connection CoProcessor failure codes: bit 3 9600 bps FAX modem module failed bit 2 SDLC chip failed bit 1 RAM failed bit 0 ROM checksum failed Intel SatisFAXtion failure codes: bit 1 2400 bps data modem failed bit 0 9600 bps FAX modem failed --------F-2FCB13DL01------------------------- INT 2F - Communicating Applications Specification - START DIAGNOSTICS AX = CB13h DL = 01h Return: AX = 0000h successfully started < 0 error code (see AX=CB01h) SeeAlso: AX=CB13h/DL=00h --------F-2FCB14----------------------------- INT 2F - Communicating Applications Specification - MOVE RECEIVED FILE AX = CB14h BX = event handle CX = receive file number 0001h first received file N Nth received file DS:DX -> ASCIZ string specifying new name for file (must not exist) Return: AX = 0000h successful < 0 error code (see AX=CB01h) --------F-2FCB15----------------------------- INT 2F - Communicating Applications Specification - SUBMIT FILE TO SEND AX = CB15h DS:DX -> variable-length data area (see below) Return: AX >= 0 event handle < 0 error code (see AX=CB01h) SeeAlso: AX=CB01h Format of data area: Offset Size Description 00h BYTE transfer type 00h = 200x200 dpi, fax mode 01h = 100x200 dpi, fax mode 02h = file transfer mode 03h to 7Fh reserved 01h BYTE text size 00h = 80 columns 01h = 132 columns 02h to 7Fh reserved 02h WORD time to send (DOS packed time format, see INT 21/AX=5700h) 04h WORD date to send (DOS packed date format, see INT 21/AX=5700h) 06h 32 BYTEs ASCIZ destination name 26h 80 BYTEs ASCIZ name of file to send 76h 47 BYTEs ASCIZ phone number to dial A5h 64 BYTEs ASCIZ application-specific tag string E5h BYTE reserved (00h) E6h BYTE cover page 00h don't send cover page 01h send cover page 02h to 7Fh reserved E7h 23 BYTEs reserved (zeros) FEh variable ASCIZ string containing text of cover page (if cover page flag set to 01h) --------F-2FCB16BX1234----------------------- INT 2F - Communicating Applications Spec v1.2+ - UNLOAD RESIDENT MANAGER AX = CB16h BX = 1234h CX = 5678h DX = 9ABCh Return: AX = 0000h successful < 0 error code Note: the MTEZ XpressFax CASMGR ignores the values in BX,CX, and DX SeeAlso: AX=C000h"MTEZ",AX=CB00h --------F-2FCB17----------------------------- INT 2F - Communicating Applications Spec v1.2+ - SET COVER PAGE STATUS AX = CB17h BX = event handle CL = cover page status 00h not read 01h read by user Return: AX = 0000h successful < 0 error code --------F-2FCB80----------------------------- INT 2F - Intel SatisFAXtion CASMGR - ??? AX = CB80h ??? Return: ??? --------F-2FCB81----------------------------- INT 2F - Intel SatisFAXtion CASMGR - ??? AX = CB81h ??? Return: ??? --------F-2FCB82----------------------------- INT 2F - Intel SatisFAXtion CASMGR - ??? AX = CB82h ??? Return: ??? --------F-2FCBDCBL56------------------------- INT 2F - Comwave Microfax Specification - GET STATUS ARRAY AX = CBDCh BL = 56h BH = line number (starts with 1) CX:DX -> 32-byte status buffer or 80 character string Return: AX = number of cards installed, or FFFFh on error Program: Comwave manufacturers the Microfax line of fax cards which are a high- performance multi-card FAX solution for OEMs. Note: defaults to AH=CBh but can be changed SeeAlso: AX=CBDDh,AX=DA00h --------F-2FCBDDBL56------------------------- INT 2F - Comwave Microfax Specification - COMMAND SUBMISSION AX = CBDDh BL = 56h BH = ? CX:DX -> command to execute Return: AX = status 0000h success FFFFh on error SeeAlso: AH=2Ah,AX=CBDCh,AX=80FBh --------c-2FCC--SI5453----------------------- INT 2F U - Qualitas Qcache v4.00 AH = CCh SI = 5453h or 7473h AL = ??? DL = 00h or ??? Return: SI = 7473h ??? ----------2FCD00----------------------------- INT 2F - Intel Image Processing Interface - INSTALLATION CHECK AX = CD00h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed SeeAlso: AX=CD02h"Image" --------P-2FCD00----------------------------- INT 2F - LaserPort Interface - INSTALLATION CHECK AX = CD00h Return: AL = status FFh installed SeeAlso: AX=CD0Fh"LaserPort" --------U-2FCD00----------------------------- INT 2F - SWELL.EXE - INSTALLATION CHECK AX = CD00h Return: AX = 00FFh installed BH = major version BL = minor version Program: SWELL.EXE is a TSR which swaps programs to disk when they EXEC a child process with INT 21/AH=4Bh ----------2FCD01----------------------------- INT 2F - Intel Image Processing Interface - SET DEVICE NAME AX = CD01h CX:BX -> ASCIZ character device name ("LPTn", "COMn", "PRN") Return: AL = 00h successful CX:BX -> internal character device name = 80h error --------U-2FCD01----------------------------- INT 2F - SWELL.EXE - SUSPEND ONCE AX = CD01h Return: AX = 0000h SeeAlso: AX=CD02h"SWELL" ----------2FCD02----------------------------- INT 2F - Intel Image Processing Interface - GET VERSION NUMBER AX = CD02h Return: AL = 00h/01h successful BH = major version number (BCD) BL = minor version number (BCD) = 80h error Note: if return AL = 01h, the IPI supports network redirection SeeAlso: AX=CD00h"Image" --------U-2FCD02----------------------------- INT 2F - SWELL.EXE - SUSPEND AX = CD02h Return: AX = 0000h SeeAlso: AX=CD03h"SWELL" ----------2FCD03----------------------------- INT 2F - Intel Image Processing Interface - SELECT SCAN LINE AX = CD03h BX = scan line CX = requested density in dots per inch (300, 600, or 1200) Return: AL = 00h succesful CX = density at which scan line was mapped ES:DI -> start of scan line AL = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory SeeAlso: AX=CD04h"Image" --------U-2FCD03----------------------------- INT 2F - SWELL.EXE - ACTIVATE AX = CD03h Return: AX = 0000h SeeAlso: AX=CD02h"SWELL" ----------2FCD04----------------------------- INT 2F - Intel Image Processing Interface - MOVE BITMAP TO SCANLINE AX = CD04h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory = 84h unrecognized source = 85h initialization error SeeAlso: AX=CD03h"Image" Format of structure: Offset Size Description 00h WORD image source (0 = conventional memory, 1 = expanded memory) 02h DWORD pointer to image data 06h WORD scan line on which to place 08h WORD bit offset from start of scan line at which to place 0Ah WORD density of bitmap data (300, 600, or 1200 dpi) 0Ch WORD width in bits of data 0Eh WORD source logical page number 10h WORD source handle (only if source in expanded memory) 12h WORD source offset (only if source in expanded memory) --------U-2FCD04----------------------------- INT 2F - SWELL.EXE - TURN OFF VERBOSE MODE AX = CD04h Return: AX = 0000h SeeAlso: AX=CD05h"SWELL" ----------2FCD05----------------------------- INT 2F - Intel Image Processing Interface - PRINT PAGE AX = CD05h Return: AL = 00h successful = 80h unsuccessful Note: page image is retained, so multiple calls will print multiple copies of the page SeeAlso: AX=CD06h"Image" --------U-2FCD05----------------------------- INT 2F - SWELL.EXE - TURN ON VERBOSE MODE AX = CD05h Return: AX = 0000h SeeAlso: AX=CD04h"SWELL" ----------2FCD06----------------------------- INT 2F - Intel Image Processing Interface - CLEAR PAGE AX = CD06h Return: AL = 00h successful = 80h unsuccessful Note: palette is reset to default SeeAlso: AX=CD09h"Image" --------U-2FCD06----------------------------- INT 2F - SWELL.EXE - UNINSTALL AX = CD06h Return: AX = 0000h uninstalled = 8002h programs still swapped, not uninstalled ----------2FCD07----------------------------- INT 2F - Intel Image Processing Interface - reserved AX = CD07h --------U-2FCD07----------------------------- INT 2F - SWELL.EXE - GET INFO AX = CD07h ES:BX -> 32-byte buffer for info Return: AX = 0000h successful ES:BX buffer filled = 8001h buffer wrong size Format of info buffer: Offset Size Description 00h WORD 20h (total size of buffer) 02h BYTE suspend-once mode active if nonzero 03h BYTE 00h active, 01h suspended 04h BYTE 00h quiet, 01h verbose 05h BYTE "Borland support" (allowing INT 21/AX=4B01h) on if nonzero 06h 26 BYTEs unused??? ----------2FCD08----------------------------- INT 2F - Intel Image Processing Interface - SCREEN IMAGE AX = CD08h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory = 84h unrecognized source = 85h initialization error SeeAlso: AX=CD05h"Image",AX=CD09h"Image" Format of structure: Offset Size Description 00h WORD image source (0 = conventional memory, 1 = expanded memory) 02h DWORD pointer to image data 06h WORD horizontal position on paper of left edge (in 1200 dpi units) 08h WORD vertical position on paper of top edge (in 1200 dpi units) 0Ah WORD left cropping (currently must be zero) 0Ch WORD top cropping (currently must be zero) 0Eh WORD width (currently must be 8000h) 10h WORD height (currently must be 8000h) 12h WORD horizontal size of image in 1200 dpi units 14h WORD vertical size of image in 1200 dpi units 16h WORD aspect ratio (currently reserved) 18h WORD initialization flag (if 01h, initialization is performed) 1Ah WORD pixels per line of source data 1Ch WORD number of scan lines in source data 1Eh WORD number of scan lines in packet 20h WORD bits per pixel (1,2,4,6, or 8) 22h WORD pixels per byte (1,2,4, or 8) 24h WORD compression type (currently only 00h [uncompressed] supported) 26h WORD source page number (if in expanded memory) 28h WORD source handle (if in expanded memory) 2Ah WORD source offset (if in expanded memory) --------U-2FCD08----------------------------- INT 2F - SWELL.EXE - UNUSED AX = CD08h Return: AX = FFFFh (error) ----------2FCD09----------------------------- INT 2F - Intel Image Processing Interface - LOAD SCREEN AX = CD09h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful SeeAlso: AX=CD06h"Image Processing",AX=CD0Ah"Image Processing" Format of structure: Offset Size Description 00h BYTE style 44h ('D') diamond style 4Ch ('L') line style 01h BYTE reserved (00h) 02h WORD frequency in lines per inch [sic] currently, coerced to nearest of 50, 60, 68, 70, 75, 85, or 100 04h WORD screen angle in degrees (-360 to 360) currently coerced to nearest of -45, 0, 45, or 90 --------U-2FCD09----------------------------- INT 2F - SWELL.EXE - TURN OFF "BORLAND SUPPORT" AX = CD09h Return: AX = 0000h SeeAlso: AX=CD0Ah"SWELL" ----------2FCD0A----------------------------- INT 2F - Intel Image Processing Interface - LOAD PALETTE AX = CD0Ah CX:BX -> palette structure (see below) Return: AL = 00h successful = 80h unsuccessful SeeAlso: AX=CD09h"Image Processing" Format of palette structure: Offset Size Description 00h BYTE bits per pixel for which palette is to be used (1,2,4,6, or 8) 01h 2**N palette translation values, one per possible pixel value --------U-2FCD0A----------------------------- INT 2F - SWELL.EXE - TURN ON "BORLAND SUPPORT" AX = CD0Ah Return: AX = 0000h SeeAlso: AX=CD09h"SWELL" --------P-2FCD0F----------------------------- INT 2F - LaserPort Interface - EXECUTE FUNCTION AX = CD0Fh BL = function 01h enable 02h disable 03h ??? Return: AL = status 00h success SeeAlso: AX=CD00h"LaserPort" --------K-2FCF00----------------------------- INT 2F - TEMPLEXX - INSTALLATION CHECK AX = CF00h Return: AL = FFh if installed Program: TEMPLEXX is a popup keyboard template by Henson Scientific, Inc. Note: values in AL other than 00h cause an immediate return without modifying any registers --------G-2FD000----------------------------- INT 2F - MDEBUG display driver - GET DRIVER STATUS AX = D000h Return: CF set on error all other registers must be unchanged) CF clear if successful AL = FFh AH = driver semaphor 00h driver is not active 01h driver is active BX = CS of the driver CX = driver version (CH = major, CL = minor, must be >= 013Ch) DL = buffer semaphor 00h driver is not pending 01h driver is pending between functions 02h and 03h DH = show semaphor 00h driver is not pending 01h driver is pending between functions 04h and 05h Program: MDEBUG is a shareware memory-resident debugging tool by Bernd Schemmer, including a memory monitor, an interpreter and a disassembler Notes: MDEBUG can use any two consecutive multiplex numbers between C0h and FFh; the default is D0h for the display driver and D1h for the command driver (see INT 60/AH=00h"MDEBUG" for the actual multiplex numbers used) this function MUST be reentrant, as MDEBUG calls it after every popup before any other actions. The handler should not change any registers if the display is in an unsupported mode or in a mode MDEBUG supports itself, e.g. a normal text mode with at least 80x25 characters (i.e. 80x43 or 132x44 (v1.60+)). In this case MDEBUG will not call any of the other functions for this popup session. MDEBUG will not call the other functions if the returned version is less than the actual version of MDEBUG. if the driver is reentrant, DL and DH should be 00h SeeAlso: AX=D001h,AX=D002h,AX=D003h,AX=D004h,AX=D005h --------M-2FD000----------------------------- INT 2F - ZWmous - INSTALLATION CHECK AX = D000h Return: AX = 5A57h ("ZW") if installed BX = segment of resident code Program: ZWmous is a shareware TSR by Zen Wu which permits the use of a mouse with many non-mouse applications by entering the letter under the mouse cursor on button presses SeeAlso: INT 33/AX=0003h --------N-2FD000----------------------------- INT 2F - Lotus CD/Networker - INSTALLATION CHECK AX = D000h Return: AL = FF if CD/Networker TSR is loaded BX = 4D44h ("MD") signature CX = Windows mode word (from INT 2F/AX=1600h) at time of TSR load DX = bitmap identifying all loaded CD/Networker TSRs. Notes: INT 2F/AH=D0h is used by CD/Networker to communicate between a resident redirector TSR and a transient program that controls the TSR's CD-ROM drive emulation (volume attachments, caching, etc). At present there is only one CD/Networker TSR; the bitmap always = 4. SeeAlso: AX=D002h"Lotus",INT 2F/AX=1500h"CD-ROM" --------G-2FD001----------------------------- INT 2F - MDEBUG display driver - INITIALIZE DRIVER AX = D001h Return: CF set on error AL = driver semaphor AH = buffer semaphor Notes: MDEBUG calls this function after every succesful call of the function 00h. The function should reset all internal data and the status of the driver. If this function returns an error, MDEBUG will not call the other functions in this popup session. MDEBUG can use any two consecutive multiplex numbers between C0h and FFh; the default is D0h for the display driver and D1h for the command driver SeeAlso: AX=D000h --------G-2FD002----------------------------- INT 2F - MDEBUG display driver - SAVE GRAPHIC DATA AX = D002h Return: CF set on error CF clear if successful display memory saved and display switched to one of the text modes 02h, 03h or 07h. Note: MDEBUG calls this function only once every popup session before displaying its windows. SeeAlso: AX=D000h,AX=D003h --------N-2FD002BX4D44----------------------- INT 2F - Multiplex - Lotus CD/Networker GET DATA AREA AX = D002h BX = 4D44h DX = bitmap identifying one loaded CD/Networker TSR Return: ES:DI -> data area owned by TSR Note: the format of the data area changes with each minor revision, so it cannot be counted on SeeAlso: AX=D000h"Lotus" --------G-2FD003----------------------------- INT 2F - MDEBUG display driver - RESTORE GRAPHIC DATA AX = D003h Return: CF set on error CF clear if successful display restored to the mode it was in before calling AX=D002h and the display memory is restored Note: MDEBUG calls this function only once every popup session just before it exits to normal DOS. SeeAlso: AX=D000h,AX=D002h --------G-2FD004----------------------------- INT 2F - MDEBUG display driver - SHOW SAVED DATA AX = D004h Return: CF set on error CF clear if successful display switched to mode it was in before calling AX=D002h and the display memory is restored Note: This function needn't save the display memory before changing it. SeeAlso: AX=D000h,AX=D005h --------G-2FD005----------------------------- INT 2F - MDEBUG display driver - SWITCH BACK TO TEXT SCREEN AX = D005h Return: CF set on error CF clear if successful display restored to mode it was in before calling AX=D004h Note: This function needn't save or change the display memory SeeAlso: AX=D000h,AX=D004h --------G-2FD0------------------------------- INT 2F - MDEBUG display driver - RESERVED FUNCTION NUMBERS AH = D0h AL = 06h-7Fh Note: these functions are reserved for future use --------G-2FD0------------------------------- INT 2F - MDEBUG display driver - USER DEFINED FUNCTION NUMBERS AH = D0h AL = 80h-FFh Note: these functions numbers are reserved for user defined features (e.g. communication between the transient und resident parts of the driver) --------G-2FD100----------------------------- INT 2F C - MDEBUG command driver - GET STATUS AX = D100h BX = version of MDEBUG (BH = major, BL = minor) CX = command driver counter ---v1.60+--- DS:SI -> MDEBUG identification table (see below) ES = segment of display memory used by MDEBUG DI = size of video mode used by MDEBUG (high byte = lines, low byte = columns) Return: DL = FFh BX = version number of the driver if it is less than the version in BX, else unchanged CX incremented Program: MDEBUG is a shareware memory-resident debugging tool by Bernd Schemmer, including a memory monitor, an interpreter, and a disassembler Notes: called by MDEBUG at start of popup session; if the version number returned in BX is less than 1.52 (1.60 for MDEBUG v1.70), MDEBUG will not call any of the other functions during this popup session MDEBUG can use any two consecutive multiplex numbers between C0h and FFh; the default is D0h for the display driver and D1h for the command driver (see INT 60/AH=00h"MDEBUG" for the multiplex numbers actually used) this function must end with a far call to the old INT 2F handler after changing the registers this function MUST be reentrant command drivers must also declare the following data at the given offsets in the code segment 100h 3 BYTEs JMP-command in .COM-files 103h BYTE NOP-command (90h) 104h 26 BYTEs signature "Kommandotreiber für MDEBUG" 11Eh 12 BYTEs name of driver, e.g. "MDHISDRV.COM" each driver must have a unique name MDEBUG will pass every key and command to the command driver(s) before checking for a valid internal command SeeAlso: AX=D000h,AX=D101h Format of MDEBUG identification table: Offset Size Description -2 WORD entry offset 00h WORD CS of MDEBUG 02h DWORD old INT 08h vector 06h DWORD old INT 09h vector 0Ah DWORD address INT 16h routine used by MDEBUG 0Eh BYTE length of version string 0Fh N BYTEs version string --------G-2FD101----------------------------- INT 2F - MDEBUG command driver - INITIALIZE DRIVER AX = D101h CX = command driver counter Return: DL = FFh if successful CX incremented else error: all registers unchanged Note: this function must end with a far call to the old INT 2F handler after changing the registers this function must be reentrant --------G-2FD102----------------------------- INT 2F - MDEBUG command driver - EXECUTE INTERPRETER COMMAND AX = D102h BL = first character of the interpreter command BH = last character of the interpreter command (or blank) DS:SI -> parameter for the interpreter command as ASCIZ string DS:DI -> MDEBUG data structure (see below) Return: AL = FFh CF set on error AH = error number 01h syntax error 02h first shell of the command.com is activ 03h esc pressed 04h break pressed 05h DOS is busy 06h command ended 07h division by zero 08h invalid display driver 09h invalid command driver 0Ah error 8 and 9 0Bh unknown error 0Ch new error DS:SI -> ASCIZ error message (max 30 characters) else unknown error CF clear if successful AH = return code 00h continue processing the command line 01h leave MDEBUG popup session 02h leave MDEBUG popup session and automatically popup again if the InDOS flag is zero 03h not used (same as 00h) 04h not used (same as 00h) 05h put new command line into the input buffer, DS:SI -> new command line (ASCIZ string, max 66 chars) 06h process new command line DS:SI -> new command line (ASCIZ string, max 66 chars) else unknown status, but continue processing commmand line Note: this function must end with a far call to the old INT 2F handler (with registers unchanged) if the driver does not support the interpreter command in BX. Otherwise, the driver must not chain to the old INT 2F. Format of MDEBUG data structure: Offset Size Description 00h WORD register SE 02h WORD register OF 04h WORD register FS 06h WORD register FO 08h WORD register AX 0Ah WORD register BX 0Ch WORD register CX 0Eh WORD register DX 10h WORD register SI 12h WORD register DI 14h WORD register DS 16h WORD register ES 18h WORD register BP 1Ah WORD register SS 1Ch WORD register SP 1Eh WORD register FL (flags) 20h WORD register R0 22h WORD register R1 24h WORD register R2 26h WORD register R3 28h WORD register R4 2Ah WORD register R5 2Ch WORD register R6 2Eh WORD register R7 30h WORD register R8 32h WORD register CS, return-address 34h WORD register IP, return-address 36h DWORD saved pointer to data for key <F6> (v1.60) saved monitor address (v1.70) 3Ah 12 WORDs saved register values on last popup entry (for <F8> key) (original register values at popup entry of MDEBUG) AX, BX, CX, DX, SI, DI, DS, ES, BP, SS, SP, flags 52h 12 WORDs saved register values on last popup exit (for <SHIFT-F8> key) AX, BX, CX, DX, SI, DI, DS, ES, BP, SS, SP, flags 6Ah DWORD address of the DOS-invars-table 6Eh DWORD address of the InDOS flag 72h WORD offset of the register which is used for the segment of the first monitor window 74h WORD offset of the register which is used for the offset of the first monitor window 76h WORD name of the register which is used for the segment of the first monitor segment 78h WORD name of the register which is used for the offset of the first monitor window 7Ah WORD pseudo register 1 7Ch WORD pseudo register 2 --------G-2FD103----------------------------- INT 2F - MDEBUG command driver - EXECUTE KEY IN THE MONITOR AX = D103h BX = key code (like result of an interrupt 16h call) CX = 0 -> the cursor is in the ASCII column of the monitor CX = 1 -> the cursor is in one of the hex fields of the monitor DS:SI -> MDEBUG data structure (see AX=D102h) ES:DI -> actual byte in the monitor Return: AL = FFh AH = return code 00h key processed, read next key 01h leave MDEBUG popup session 02h leave MDEBUG popup session and automatically popup again if DOS is not busy 03h signal an error (beep) 04h driver has redefined the key, proceed with the new key BX = new key code MDEBUG will not pass the new key to the command driver(s) else treat like code 00h Note: this function must end with a far call to the old INT 2F handler (with registers unchanged) if the driver does not support the key in BX. Otherwise, the driver must not chain to the old INT 2F. SeeAlso: AX=D104h --------G-2FD104----------------------------- INT 2F - MDEBUG command driver - EXECUTE KEY IN THE INTERPRETER AX = D104h DS:SI -> MDEBUG data structure (see AX=D102h) Return: AL = FFh AH = return code 00h key processed, read next key 01h leave MDEBUG popup session 02h leave MDEBUG popup session and automactically popup again if DOS is not busy 03h signal an error (beep) 04h driver has redefined the key, proceed with the new key BX = new key code MDEBUG won't pass the new key to the command driver(s) 05h put new command line into the input buffer DS:SI -> new command line (ASCIZ string, max 66 chars) 06h process new command line DS:SI -> new command line (ASCIZ string, max 66 chars) else treat like code 00h Note: this function must end with a far call to the old INT 2F handler if the driver does not support the key in BX. Otherwise, the driver must not chain to the old INT 2F. SeeAlso: AX=D103h --------G-2FD1------------------------------- INT 2F - MDEBUG command driver - RESERVED FUNCTIONS AH = D1h AL = 05h-0Ah Note: these functions are reserved for future use --------G-2FD110----------------------------- INT 2F - MDEBUG command driver - GET ADDRESS OF THE OLD INT 2F AX = D110h Return: DL = FFh ES:BX -> next program in the chain for INT 2F CX = code segment of this driver DI = offset of driver identification table (see below) (v1.60+) Notes: only called by the transient part of the driver must be reentrant and the driver must not chain this function to the old INT 2F Format of the driver identification table: Offset Size Description 00h 26 BYTEs signature "Kommandotreiber für MDEBUG" ^- Note: ASCII 129,German U-umlaut 27h 12 BYTEs name of driver, e.g. "MDHISDRV.COM" each driver must have a unique name --------G-2FD111----------------------------- INT 2F - MDEBUG command driver - START DRIVER AX = D111h Return: DL = FFh Notes: only called by the transient part of the driver to inform the resident part that it is installed the function must be reentrant and the driver mustn't chain this function to the old INT 2F SeeAlso: AX=D101h,AX=D112h --------G-2FD112----------------------------- INT 2F - MDEBUG command driver - END DRIVER AX = D112h Return: DL = FFh Notes: only called by the transient part of the driver to inform the resident part that it will be released after this function the function must be reentrant and the driver mustn't chain this function to the old INT 2F SeeAlso: AX=D101h,AX=D111h --------G-2FD1------------------------------- INT 2F - MDEBUG command driver - RESERVED FUNCTIONS AH = D1h AL = 13h-7Fh Note: these functions are reserved for future use --------G-2FD1------------------------------- INT 2F - MDEBUG command driver - USER DEFINED FUNCTIONS AH = D1h AL = 80h-FFh Note: these functions are reserved for user defined features (e.g. communication between the transient und resident parts of the driver) --------Q-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: Quarterdeck programs (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 --------m-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=D200h,AX=D201h/BX=5145h --------m-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: Quarterdeck programs (QEMM/QRAM/VIDRAM/MANIFEST/etc) 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. SeeAlso: AX=D200h --------G-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: Quarterdeck programs (QEMM/QRAM/VIDRAM/MANIFEST/etc) will search for a free AH value from D2h through FFh, then C0h through D1h SeeAlso: AX=D200h --------E-2FD201BX4D45----------------------- INT 2F U - Quarterdeck - DVDOS4GX.DVR - ??? AX = D201h BX = 4D45h ("ME") CX = 5155h ("QU") DX = 5044h ("PD") Return: AL = FFh BX = 4F4Bh ("OK") Notes: AH=D2h is the default; use the Quarterdeck installation check described under AX=D200h called by QEMM 6.03 performs a variety of actions before setting return registers SeeAlso: AX=D200h --------m-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: Quarterdeck programs (QEMM/QRAM/VIDRAM/MANIFEST/etc) 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=D200h,AX=D201h/BX=4849h,INT 67/AH=3Fh --------V-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: Quarterdeck programs (QEMM/QRAM/VIDRAM/MANIFEST/etc) will search for a free AH value from D2h through FFh, then C0h through D1h SeeAlso: AX=D200h 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??? --------R-2FD300BX4562----------------------- INT 2F U - TeleReplica - INSTALLATION CHECK AX = D300h BX = 4562h CX = 2745h DX = serial port I/O base address??? (03F8h for v3.9) Return: SI = segment of resident code AX = 251Dh BX = DF21h CX = F321h DX = ??? --------R-2FD3CB----------------------------- INT 2F U - LapLink Quick Connect v6 - API AX = D3CBh CX = function 0002h get ??? Return: BX:AX -> ??? CL = ??? CH = ??? DX = ??? DI = COM1 I/O port??? SI = COM2 I/O port??? 0003h initialization??? 0004h ??? 0005h initialization??? 0006h reset/clear ??? Return: AX = 0000h ES:DI -> next byte after ??? cleared by this call 0007h initialization??? 0008h uninstall Return: BX = status 0000h successful FFFFh incomplete, stub remains in memory Return: CX = 534Bh (except function 0002h) Index: uninstall;LapLink Quick Connect --------l-2FD44D----------------------------- INT 2F - 4DOS.COM v2.1+ - API AX = D44Dh BH = function 00h installation check Return: AX = 44DDh BL = minor version number BH = major version number CX = PSP segment address for current invocation DL = 4DOS shell number (0 for the first (root) shell, updated each time a new copy is loaded) 01h (internal, v2.1-3.03) terminate current copy of 4DOS Return: nothing (internal, v4.0) ??? Return: ES:BX -> data area (see below) 02h ??? DX = ??? ---v2.1-3.03 only--- 03h EXEC program CX:DX -> EXEC record FEh deallocate shell number (passed through to root shell) ??? FFh allocate shell number (passed through to root shell) Note: bug in v3.00 will crash system if unrecognized value in BH SeeAlso: AX=D44Eh,AX=E44Dh,INT 21/AX=4403h Index: installation check;4DOS|installation check;NDOS Format of EXEC record: Offset Size Description 00h WORD offset of ASCIZ program name in same segment as EXEC record 02h WORD offset of DOS commandline in same segment as EXEC record 04h WORD segment of environment for child process (see INT 21/AH=26h) Format of 4DOS v4.0 data area: Offset Size Description 00h 2 BYTEs ??? 06h WORD XMS handle for swapping ??? --------l-2FD44E----------------------------- INT 2F - 4DOS v3.0+ - AWAITING USER INPUT AX = D44Eh ---4DOS v3.01+--- BX = 0000h 4DOS is ready to display prompt = 0001h 4DOS has displayed the prompt, about to accept user input Return: handler must preserve SI, DI, BP, SP, DS, ES, and SS Note: v3.00 only makes the call corresponding to BX=0001h, does not set BX SeeAlso: AX=D44Dh --------K-2FD44FBX0000----------------------- INT 2F - 4DOS v4.0+ - KSTACK.COM - INSTALLATION CHECK AX = D44Fh BX = 0000h Return: AX = 44DDh if installed SeeAlso: AX=D44Fh/BX=0001h --------K-2FD44FBX0001----------------------- INT 2F - 4DOS v4.0+ - KSTACK.COM - PLACE KEYSTROKES INTO KEYSTACK AX = D44Fh BX = 0001h CX = number of keystrokes (01h-FFh) DS:DX -> keystroke list (one word per keystroke) Return: AX = status 0000h successful nonzero failed BX,CX,DX destroyed Notes: the keystrokes are the exact values to return from subsequent calls to INT 16 with AH=00h,01h,10h, or 11h, with the following exceptions: 0000h causes subfunctions 01h and 11h to indicate an empty keyboard buffer FFFFh is followed by a word indicating the number of clock ticks to delay before the next faked keystroke v4.00 KSTACK overwrites any unread keystrokes from the previous invocation, and does not range-check CX; it will overwrite memory following the resident portion if CX is greater than 100h. SeeAlso: AX=D44Fh/BX=0000h,INT 16/AH=00h,INT 21/AX=4403h --------G-2FD600----------------------------- INT 2F - HEART.COM - INSTALLATION CHECK AX = D600h Return: AX = 0303h (two hearts) if installed ES:DI -> buffer (see below) Program: HEART.COM is a CPU lock-up/critical indicator utility by Mitch Davis. Notes: Once the host program has identified the address of the data area, it can change this to indicate safe/critical, alternate colours, etc. The entries for the color table are in char/attrib form. Every two entries form a pair which is alternated between 68 times a minute. The first half of the table is for color videos, the second mono. Within each half, the first half is for the safe chars, and the second for the critical chars. Format of buffer: Offset Size Description 00h 8 WORDs table of colors/attributes (see notes above) 10h BYTE flags bit 0: program is in critical section, so flash double exclamation mark bit 1: program is in safe code, so flash the heart character 11h WORD position of heartbeat on screen, normally 009Eh (last column of second line) ----------2FD600----------------------------- INT 2F U - VEDIT VSWAP - INSTALLATION CHECK AX = D600h Return: AL = D6h if installed Program: VSWAP is the resident portion of VEDIT's "swapper" capability; VEDIT is a programmer's text editor by Greenview Data. SeeAlso: AX=D601h,AX=D602h ----------2FD601----------------------------- INT 2F U - VEDIT VSWAP - ??? AX = D601h BL = subfunction number??? Return: BL = return code ??? ES = resident portion's data??? segment DX = resident portion's code segment SeeAlso: AX=D600h"VSWAP" ----------2FD602----------------------------- INT 2F U - VEDIT VSWAP - EXEC PROGRAM WITH SWAP AX = D602h other registers set as for INT 21/AX=4B00h Return: CF set on error AL = error code 82h = failure due to ??? CF clear on success SeeAlso: AX=D600h"VSWAP",INT 21/AH=4Bh"EXEC" --------N-2FD701BX0000----------------------- INT 2F - BANYAN VINES v4+ - GET BANV INTERRUPT NUMBER AX = D701h BX = 0000h Return: AX = 0000h installed BX = interrupt number (60h to 66h) nonzero not present Note: if AX is nonzero, VINES 3.x or earlier may be installed, thus it is necessary to examine the four bytes preceding the handlers for INT 60 through INT 66 for the string "BANV" SeeAlso: AX=D702h,AX=D703h,AX=D704h --------N-2FD702----------------------------- INT 2F U - BANYAN VINES v4+ - PCPRINT interface AX = D702h BX = function ??? Return: ??? SeeAlso: AX=D701h,AX=D703h,INT 61/AX=0005h"Banyan" --------N-2FD703----------------------------- INT 2F U - BANYAN VINES v4+ - MAIL interface AX = D703h BX = function ??? Return: ??? SeeAlso: AX=D702h,AX=D704h --------N-2FD704----------------------------- INT 2F U - BANYAN VINES v4+ - Streettalk Directory Assistance interface AX = D704h BX = function ??? Return: ??? SeeAlso: AX=D703h,INT 61/AX=0007h"Banyan" --------N-2FD800----------------------------- INT 2F - Novell NetWare Lite - CLIENT.EXE - INSTALLATION CHECK AX = D800h Return: AL = FFh if installed DX = version number??? (0100h in 1.00) BX = data segment of resident copy??? ES:DI = FAR entry point for API routines Load BX = function number and call for various functions. Functions 00h - 10h supported in 1.00. SeeAlso: AX=7A00h,AX=D880h --------N-2FD880----------------------------- INT 2F - Novell NetWare Lite - SERVER.EXE - INSTALLATION CHECK AX = D880h Return: AL = FFh if installed DX = version number??? (0100h in 1.00) BX = Data segment of resident copy??? CL = 01h if SERVER is active = 00h if SERVER is disabled SeeAlso: AX=7A00h,AX=D800h --------F-2FDA00----------------------------- INT 2F - ZyXEL ZFAX - INSTALLATION CHECK AX = DA00h Return: AH = enabled state (00h = enabled, 01h = disabled) AL = 5Ah installed Note: ZFAX is the bundled FAX software which comes with the ZyXEL model fax modems. SeeAlso: AX=CBDCh,AX=DA01h,AX=DA02h,AX=DA03h --------F-2FDA01----------------------------- INT 2F - ZyXEL ZFAX - UNINSTALL AX = DA01h Return: AL = 00h Success 01h Failure SeeAlso: AX=DA00h --------F-2FDA02----------------------------- INT 2F - ZyXEL ZFAX - DISABLE AX = DA02h Return: AL = 00h SeeAlso: AX=DA03h --------F-2FDA03----------------------------- INT 2F - ZyXEL ZFAX - ENABLE AX = DA03h Return: AL = 00h SeeAlso: AX=DA02h --------G-2FDA55----------------------------- INT 2F U - TRAP.COM - INSTALLATION CHECK AX = DA55h DL = interrupt number DH = ??? Return: if installed AH = interrupt number AL = ??? ES:BX -> ??? Program: TRAP is an interrupt call tracer by Patrick Phillipot/Udo Chrosziel Note: a separate copy of TRAP is loaded for each interrupt to be traced; thus the interrupt number is part of the installation check --------K-2FDC00----------------------------- INT 2F - GOLD.COM - INSTALLATION CHECK AX = DC00h Return: AL = 00h not installed = FFh installed Program: GOLD is a TSR by Bob Eager which makes the NumLock key return the code for F1; the purpose is to improve Kermit's VTxxx emulation --------K-2FDC01----------------------------- INT 2F - GOLD.COM - GET STATE AX = DC01h Return: AL = status 00h off 01h on SeeAlso: AX=DC00h,AX=DC02h --------K-2FDC02----------------------------- INT 2F - GOLD.COM - SET STATE AX = DC02h DL = new state 00h off 01h on Return: AL = 00h (OK) SeeAlso: AX=DC01h --------t-2FDD------------------------------- INT 2F - SoftCom programs - API AH = DDh AL = FEh get info Return: ES:BX -> TSR info list (see below) AL = program identifier BH = function FDh get version Return: BX = version FFh installation check Return: AL = FFh if installed BX = version ES = segment of resident code others vary by program Return: AL = status bit 7 set on error AL = 81h unknown function Index: installation check;SoftCom programs Format of TSR info list: Offset Size Description 00h 9 BYTEs blank-padded ASCIZ program name 09h BYTE program ID 0Ah WORD program's PSP segment 0Ch WORD program version (major in high byte) 0Eh DWORD pointer to next item in info list or 0000h:0000h 12h BYTE number of interrupts hooked 13h 5 BYTEs interrupt numbers hooked by program 18h 8 BYTEs reserved --------Q-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 --------Q-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 --------Q-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$$$ SeeAlso: INT 2F/AX=1687h,INT 31/AX=0000h Index: installation check;QDPMI --------U-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. --------U-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 Index: installation check;DVTXDI --------U-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. Index: installation check;DVSIXDI 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 (see INT 15/AX=1016h) 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 bit 6: (v2.00+) record is allocated; if bit 7 clear, process is "(starting)" and only offsets 01h and 09h are valid bit 5: (v2.00+) this app currently owns the CPU bit 4: reserved (0) bit 3: DESQview system task bit 2: reserved (0) bit 1: task has keyboard (currently unused) bit 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+ --------Q-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 --------Q-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 --------Q-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 --------Q-2FDE04----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - ADD PROCESS AX = DE04h BX = mapping context of new process (see INT 15/AX=1016h) 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) --------Q-2FDE05----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - REMOVE PROCESS AX = DE05h BX = mapping context of process (see INT 15/AX=1016h) 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 --------Q-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 --------Q-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 --------Q-2FDE08----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SAVE STATE AX = DE08h BX = mapping context of task being switched from (see INT 15/AX=1016h) 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 --------Q-2FDE09----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - RESTORE STATE AX = DE09h BX = mapping context of task being switched to (see INT 15/AX=1016h) 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 --------Q-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 DV 2.42 does not provide this call to XDI handlers running inside a window; instead, it directly calls the INT 2F handler which was active at the time DV started SeeAlso: INT 15/AX=DE26h,INT 15/AX=DE2Fh --------Q-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 --------Q-2FDE0C----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SWAP OUT PROCESS AX = DE0Ch BX = mapping context of task being swapped out (see INT 15/AX=1016h) DX = handle of DESQview system task Note: driver should pass this call to previous handler after processing it --------Q-2FDE0D----------------------------- INT 2F C - DESQview v2.26+ External Dev Interface - SWAP IN PROCESS AX = DE0Dh BX = mapping context of process just swapped in (see INT 15/AX=1016h) DX = handle of DESQview system task Note: driver should pass this call to previous handler before processing it --------Q-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 --------Q-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 --------Q-2FDE10----------------------------- INT 2F C - DESQview v2.50+ External Dev Interface - FREE TASK AX = DE10h BX = mapping context of process (see INT 15/AX=1016h) 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 --------c-2FDF00----------------------------- INT 2F - HyperWare programs - INSTALLATION CHECK AX = DF00h BX = product code 4248h ('BH') HyperStb 4448h ('DH') HyperDisk v4.20+ 4B48h ('KH') HyperKey 5348h ('SH') HyperScreen CX = 0000h DX = 0000h Return: AL = status 00h not installed FFh multiplex number in use CX = 5948h ('YH') if selected product installed ---HyperDisk--- BX = code segment of resident portion DX = HyperDisk local data version Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross) Note: AH=DFh is the default; if it is already in use by some other program, HyperWare programs then scan multiplex numbers from C0h through FFh SeeAlso: INT 13/AX=8EEDh --------c-2FDF01BX4448----------------------- INT 2F - HyperDisk v4.50+ - GET CURRENT CACHE STATE AX = DF01h BX = 4448h ('DH') Return: AX = 0000h if function supported BX = number of cache buffers in use CX = number of cache buffers which have been modified DL = caching flags (see below) Note: AH=DFh is the default; if it is already in use by some other program, HyperWare programs then scan multiplex numbers from C0h through FFh SeeAlso: AX=DF00h,AX=DF02h Bitfields for caching flags: bit 0 staged writes enabled for floppy disks bit 1 staged writes enabled for hard disks bit 2 writes verified on floppy disks bit 3 writes verified on hard disks bit 4 reserved (0) bit 5 reserved (0) bit 6 floppy caching enabled bit 7 all caching functions enabled --------c-2FDF02BX4448----------------------- INT 2F - HyperDisk v4.50+ - SET CACHE STATE AX = DF02h BX = 4448h ('DH') DL = new caching flags (see AX=DF01h) Return: AX = 0000h if supported BX = number of cache buffers in use CX = number of cache buffers which have been modified DL = previous caching flags (see AX=DF01h) Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross) Note: AH=DFh is the default; if it is already in use by some other program, HyperWare programs then scan multiplex numbers from C0h through FFh SeeAlso: AX=DF00h,AX=DF01h --------U-2FE000----------------------------- INT 2F - SETDRVER.COM v2.10+ - INSTALLATION CHECK AX = E000h Return: AX = 4A52h ("JR") if present Program: SETDRVER is a public domain TSR by Jacob Rieper which sets the apparent DOS version analogously to MS-DOS SETVER Note: this installation check differs from the usual one of returning AL=FFh SeeAlso: AX=E001h,INT 21/AH=52h --------U-2FE001----------------------------- INT 2F - SETDRVER.COM v2.10+ - GET SETDRVER VERSION AX = E001h Return: AH = major version AL = minor version SeeAlso: AX=E000h --------U-2FE002----------------------------- INT 2F - SETDRVER.COM v2.10+ - GET ORIGINAL DOS VERSION INFO AX = E002h Return: AL = FFh if successful BH = major DOS version BL = minor DOS version CH = DOS version flag CL = OEM number DH = major DR-DOS version number (FFh if unknown) DL = minor DR-DOS version number (FFh if unknown) SeeAlso: AX=E003h,AX=E007h,INT 21/AH=30h --------U-2FE003----------------------------- INT 2F - SETDRVER.COM v2.10+ - RESET INTERNAL VARIABLES AX = E003h BH = new major DOS version BL = new minor DOS version CH = new DOS version flag CL = new DOS revision number DH = new OEM number SeeAlso: AX=E002h --------U-2FE004----------------------------- INT 2F - SETDRVER.COM v2.10+ - ENABLE TSR AX = E004h Return: AL = FFh if successful SeeAlso: AX=E000h,AX=E005h,AX=E006h --------U-2FE005----------------------------- INT 2F - SETDRVER.COM v2.10+ - DISABLE TSR AX = E005h Return: AL = FFh if successful SeeAlso: AX=E000h,AX=E004h,AX=E006h --------U-2FE006----------------------------- INT 2F - SETDRVER.COM v2.10+ - GET TSR STATUS AX = E006h Return: AL = FFh if successful BL = status 01h resident and active 02h resident and inactive --------U-2FE007----------------------------- INT 2F - SETDRVER.COM v2.10+ - GET TaskMAX STATUS AT INSTALLATION AX = E007h Return: AL = FFh if successful BL = status 00h if TaskMAX not loaded before SETDRVER FFh if TaskMAX was loaded before SETDRVER SeeAlso: AX=E003h --------U-2FE0------------------------------- INT 2F - SETDRVER.COM - RESERVED FOR FUTURE USE AH = E0h AL = 08h-10h --------K-2FE300----------------------------- INT 2F - ANARKEY.COM - INSTALLATION CHECK AX = E300h Return: AL = 00h not installed FEh if installed but suspended (v3.0+) FFh installed Program: ANARKEY.COM is a commandline recall program by Steven Calwas Note: E3h is the default function number, but can be set to any value from C0h to FFh SeeAlso: AX=E301h,AX=E302h,AX=E303h,AX=E304h,AX=E305h,AX=E306h,AX=E307h --------K-2FE301----------------------------- INT 2F U - ANARKEY.COM v2+ - GET ??? AX = E301h Return: DX:BX -> ??? SeeAlso: AX=E300h Format of returned data structure for ANARKEY v2.0: Offset Size Description -7 7 BYTEs signature ('ANARKEY') 00h WORD ??? (I see 0001h in v2.0) 02h WORD ??? (I see 0001h in v2.0) 04h WORD ??? (I see 0 in v2.0) 06h WORD PSP segment of next program loaded Format of returned data structure for ANARKEY v3+: Offset Size Description -1 BYTE multiplex number 00h WORD ??? (I see 0001h in v3.0-4.0) 02h WORD ??? (I see 0001h in v3.0-4.0) 04h BYTE ??? (I see 0 in v3.0-4.0) 05h WORD PSP segment of next program loaded --------K-2FE302----------------------------- INT 2F U - ANARKEY.COM v3+ - ??? AX = E302h BL = ??? Return: ??? SeeAlso: AX=E300h --------K-2FE303----------------------------- INT 2F U - ANARKEY.COM v3+ - ANARKMD API AX = E303h BL = function 01h toggle insert mode 02h display contents of history buffer 03h write history buffer to file ES:DX -> file name 04h clear history buffer 05h undefine all aliases 06h show aliases 07h list programs using Unix switchar 08h jump to bottom of history buffer 09h (v4.0) add string to history buffer ES:DX -> ASCIZ string 0Ah (v4.0) ??? ES:DX -> ??? 0Bh (v4.0) copy string to edit buffer for use as next input line ES:DX -> ASCIZ string 0Ch (v4.0) ??? 0Dh (v4.0) copy ??? to ??? 0Eh (v4.0) ??? 0Fh (v4.0) ??? 10h (v4.0) set ??? flag 11h (v4.0) display error message about running in EMS under Windows Return: ??? SeeAlso: AX=E300h --------K-2FE304----------------------------- INT 2F U - ANARKEY.COM v2+ - ??? AX = E304h BL = ??? Return: ??? SeeAlso: AX=E300h --------K-2FE305----------------------------- INT 2F U - ANARKEY.COM v3+ - ENABLE/SUSPEND ANARKEY AX = E305h BL = new state 01h suspended 00h enabled SeeAlso: AX=E300h --------K-2FE306----------------------------- INT 2F U - ANARKEY.COM v4.0 - GET ??? AX = E306h Return: AX = ??? SeeAlso: AX=E300h --------K-2FE307----------------------------- INT 2F U - ANARKEY.COM v4.0 - GET ??? AX = E307h Return: AX = ??? BL = ??? SeeAlso: AX=E300h --------l-2FE44D----------------------------- INT 2F - NDOS - API AX = E44Dh Note: as NDOS is a licensed version of 4DOS v3.03, the API is identical to that for 4DOS, except that AH=E4h instead of D4h and the installation check returns AX=44EEh instead of AX=44DDh SeeAlso: AX=D44Dh,AX=E44Eh --------l-2FE44EBX0000----------------------- INT 2F - NDOS - AWAITING USER INPUT AX = E44Eh BX = 0000h NDOS is ready to display prompt = 0001h NDOS has displayed the prompt, about to accept user input Return: handler must preserve SI, DI, BP, SP, DS, ES, and SS SeeAlso: AX=E44Dh --------E-2FED00----------------------------- INT 2F - Phar Lap DOS EXTENDERS - INSTALLATION CHECK AX = ED00h BL = DOS extender 01h 286dosx v1.3+ (Software Development Kit) 02h 286dosx v1.3+ (Run-Time Kit) 03h 386dosx v4.0+ (SDK) 04h 386dosx v4.0+ (RTK) Return: AL = status 00h not installed FFh installed SI = 5048h ("PH") DI = 4152h ("AR") CH = major version number CL = minor version number DX = flags bit 0: running under DPMI bit 1: running under Phar Lap VMM SeeAlso: AH=A1h,AX=F100h,AX=FBA1h --------E-2FED80----------------------------- INT 2F - Phar Lap 286|DOS Extender Lite v2.5 - ??? AX = ED80h BL = DOS extender ID (see AX=ED00h) SI = 5048h ("PH") DI = 4152h ("AR") ??? Return: ??? --------y-2FEE00----------------------------- INT 2F - GRIDLOC.EXE - INSTALLATION CHECK AX = EE00h Return: AL = FFh if installed Program: GRIDLOC is a PC security program by Intelligent Security Systems, Inc. --------U-2FEE00----------------------------- INT 2F - XVIEW - INSTALLATION CHECK AX = EE00h Return: AX = 00FFh if installed Program: XVIEW is a hypertext viewer by Flambeaux Software, Inc. --------U-2FEE01----------------------------- INT 2F - XVIEW - POP UP GIVING TOPIC SEARCH KEYWORD AX = EE01h DS:DX -> ASCIZ string containing case-insensitive keyword to look up Return: AX = status (see below) Note: the specified keyword should be a hyperlink in the _IndexPage of some database; the current database is searched first SeeAlso: AX=EE00h"XVIEW",AX=EE02h,AX=EE03h,AX=EE04h,AX=EE06h Values for status: 0000h successful 00F1h unknown subfunction 00F2h unable to pop up --------U-2FEE02----------------------------- INT 2F - XVIEW - POP UP GIVING A PAGE NUMBER AX = EE02h DX = physical page number or anchor page number (see below) Return: AX = status (see AX=EE01h) Note: physical page numbers are assigned by the hypertext compiler, and will change if a page is inserted in the middle SeeAlso: AX=EE00h"XVIEW",AX=EE01h,AX=EE05h,AX=EE06h Values for anchor page number: FFEAh _Credits FFECh _SearchTopics FFEDh _SearchText FFF0h _ManualList FFF5h _HelpOnHelp FFF8h _HomePage FFF9h _IndexPage --------U-2FEE03----------------------------- INT 2F - XVIEW - POP UP GIVING FILENAME AND SEARCH TOPIC OR PAGE NUMBER AX = EE03h DS:DX -> data packet (see below) Return: AX = status (see AX=EE01h) SeeAlso: AX=EE00h"XVIEW",AX=EE01h,AX=EE02h,AX=EE06h Format of data packet: Offset Size Description 00h DWORD -> ASCIZ database filespec (0000h:0000h for current database) 04h DWORD -> ASCIZ text to look up or 0000h:0000h 08h WORD page number (0000h if keyword used) 0Ah 6 BYTEs reserved --------U-2FEE04----------------------------- INT 2F - XVIEW - POP UP AND READ SCREEN FOR SEARCH TOPIC KEYWORD AX = EE04h Return: AX = status (see AX=EE01h) Note: equivalent to the action taken when the user presses the Alt-L hotkey SeeAlso: AX=EE00h"XVIEW",AX=EE01h,AX=EE03h,AX=EE06h --------U-2FEE05----------------------------- INT 2F - XVIEW - POP UP TO MOST-RECENTLY VIEWED PAGE AX = EE05h Return: AX = status (see AX=EE01h) Note: equivalent to the action taken when the user presses the Alt-H hotkey SeeAlso: AX=EE00h"XVIEW",AX=EE02h,AX=EE06h --------U-2FEE06----------------------------- INT 2F - XVIEW - WAIT FOR POP-DOWN AND GET EXIT CODE AX = EE06h Return: AX = status (see also AX=EE01h) 0001h specified filename is not an xText database 0002h no databases found 0003h bad data in file 0004h memory shortage 0005h unable to open the requested file 0007h invalid page number for file Note: although this call is not required, the exit code can alert the caller to problems; if the call is not made, the program should enforce a delay of about 1/2 second to allow the viewer to pop up, and should not get keyboard input or attempt disk accesses during the delay SeeAlso: AX=EE00h"XVIEW",AX=EE01h,AX=EE02h,AX=EE03h,AX=EE04h,AX=EE05h --------K-2FF000----------------------------- INT 2F U - 4MAP - INSTALLATION CHECK AX = F000h Return: AX = 00FFh Program: 4MAP is a keybinding program for 4DOS (see AX=D44Dh) by Ho-Ping Tseng Note: returns AX=00FFh for any value of AL not listed here SeeAlso: AX=D44Dh,AX=F001h,AX=F002h --------K-2FF001----------------------------- INT 2F U - 4MAP - GET KEY MAPPINGS AX = F001h Return: ES:BX -> key mappings SeeAlso: AX=F000h --------K-2FF002----------------------------- INT 2F U - 4MAP - INSERT CHARACTER INTO ??? AX = F002h BL = character to insert Return: AX = status 0000h successful 0001h buffer full SeeAlso: AX=F000h,AX=F003h --------K-2FF003----------------------------- INT 2F U - 4MAP - INSERT CHARACTER INTO ??? AX = F003h BL = character to insert Return: AX = status 0000h successful 0001h buffer full Program: 4MAP is a keybinding program for 4DOS (see AX=D44Dh) by Ho-Ping Tseng SeeAlso: AX=F000h,AX=F002h --------m-2FF1------------------------------- INT 2F U - MIN-MEM v2.11 - INSTALLATION CHECK AH = F1h AL <> F1h Return: AL = F1h if installed Program: MIN-MEM is a shareware TSR manager by Biologic which permits up to 24 popup TSRs to be loaded but swapped out to disk, EMS, or XMS. One TSR at a time is brought back into memory at the user's request. --------E-2FF100----------------------------- INT 2F - DOS EXTENDER INSTALLATION CHECK AX = F100h Return: AL = FFh if DOS extender present SI = 444Fh ("DO") DI = 5358h ("SX") Note: supported or soon to be supported by Phar Lap, Rational, Ergo, and IGC SeeAlso: AH=A1h,AX=ED00h,AX=FBA1h/BX=0081h,INT 15/AX=BF02h --------d-2FF700----------------------------- INT 2F - AUTOPARK.COM - INSTALLATION CHECK AX = F700h Return: AL = 00h not installed FFh installed Program: AUTOPARK.COM is a resident hard disk parker by Alan D. Jones --------d-2FF701----------------------------- INT 2F - AUTOPARK.COM - SET PARKING DELAY AX = F701h BX:CX = 32-bit count of 55ms timer ticks --------d-2FF800CX4455----------------------- INT 2F U - SuperStor PRO 2XON.COM - INSTALLATION CHECK AX = F800h CX = 4455h ("DU") DL = 45h ("E") Return: AL = FFh if installed ES:BX -> ASCII signature "Universal Data Exchange" Program: SuperStor is a disk-compression program by Addstor. Note: returns AX=0001h if AL is not 00h or 01h SeeAlso: AX=1001h,AX=F801h --------d-2FF801CX4455----------------------- INT 2F U - SuperStor PRO 2XON.COM - UNINSTALL AX = F801h CX = 4455h ("DU") DL = 45h ("E") ES:BX = return address if successful Return: at specified address if successfully removed from memory else AL = error code ??? Program: SuperStor is a disk-compression program by Addstor. Note: returns AX=0001h if AL is not 00h or 01h SeeAlso: AX=1001h,AX=F800h --------*-2FFB------------------------------- INT 2F - Multiplex - RESERVED BY BORLAND INTERNATIONAL AH = FBh --------a-2FFB00----------------------------- INT 2F U - AutoBraille v1.1A - INSTALLATION CHECK AX = FB00h Return: AX = 00FFh if installed Program: AutoBraille is a shareware text-to-braille converter by KANSYS, Inc. SeeAlso: INT 10/AH=38h,INT 14/AX=F0F1h --------U-2FFB00----------------------------- INT 2F U - Jot-It! v1.50 - INSTALLATION CHECK AX = FB00h Return: AX = FFFFh if installed BX = version (BCD, BH=major, BL=minor) SeeAlso: AX=FB03h"Jot-It",AX=FB01h"Jot-It" --------a-2FFB01----------------------------- INT 2F U - AutoBraille v1.1A - ??? AX = FB01h ??? Return: ??? --------U-2FFB01----------------------------- INT 2F U - Jot-It! v1.50 - GET USER NAME AX = FB01h Return: DX:BX -> ASCIZ user name SeeAlso: AX=FB02h"Jot-It" --------a-2FFB02----------------------------- INT 2F U - AutoBraille v1.1A - ??? AX = FB02h Return: AH = ??? AL = ??? --------U-2FFB02----------------------------- INT 2F U - Jot-It! v1.50 - GET MESSAGE DIRECTORY AX = FB02h Return: DX:BX -> ASCIZ name of directory in which messages are stored SeeAlso: AX=FB01h"Jot-It" --------a-2FFB03----------------------------- INT 2F U - AutoBraille v1.1A - GET NEXT ??? AX = FB03h Return: AX = ??? --------U-2FFB03----------------------------- INT 2F U - Jot-It! v1.50 - UNINSTALL AX = FB03h Return: resident code removed from memory Note: CAUTION: NO checks are performed to ensure that the interrupt vectors being unhooked (08h,09h,28h,2Fh) actually point at the Jot-It! code SeeAlso: AX=FB00h"Jot-It" --------a-2FFB------------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AH = FBh AL = 04h-08h Return: AX = 0000h --------a-2FFB------------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AH = FBh AL = 09h-0Fh (???, 0Eh = COM1, 0Fh = COM2) Return: ??? Program: AutoBraille is a shareware text-to-braille converter by KANSYS, Inc. --------a-2FFB------------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AH = FBh AL = 10h-1Fh ??? Return: ??? --------a-2FFB20----------------------------- INT 2F U - AutoBraille v1.1A - SET ??? FLAGS AX = FB20h BL = flags to set SeeAlso: AX=FB21h"AutoBraille" --------a-2FFB21----------------------------- INT 2F U - AutoBraille v1.1A - CLEAR ??? FLAGS AX = FB21h BL = flags to clear SeeAlso: AX=FB20h"AutoBraille" --------a-2FFB22----------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AX = FB22h BL = ??? Program: AutoBraille is a shareware text-to-braille converter by KANSYS, Inc. --------a-2FFB28----------------------------- INT 2F U - AutoBraille v1.1A - ??? AX = FB28h BX = ??? ??? Return: ??? SeeAlso: AX=FB29h"AutoBraille" --------a-2FFB29----------------------------- INT 2F U - AutoBraille v1.1A - ??? AX = FB29h BX = ??? ??? Return: ??? SeeAlso: AX=FB28h"AutoBraille" --------a-2FFB------------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AH = FBh AL = 2Bh-34h BX = ??? --------a-2FFB35----------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AX = FB35h BL = ??? --------a-2FFB36----------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AX = FB36h BL = ??? --------a-2FFB37----------------------------- INT 2F U - AutoBraille v1.1A - SET ??? AX = FB37h BL = ??? Program: AutoBraille is a shareware text-to-braille converter by KANSYS, Inc. --------E-2FFB42BX0001----------------------- INT 2F PU - Borland C++ DPMILOAD.EXE - INSTALLATION CHECK??? AX = FB42h BX = 0001h Return: AX = version number??? (AL=major, AH=minor) CX = next-selector increment ---BC2.0--- ES:BX -> 80-byte buffer for ??? DX = DPMI version ---BC3.0--- BX = ??? (0000h) DX = ??? ES:SI -> list of valid selectors ??? Notes: The version of DPMILOAD distributed with BC++ v2.0 identifies itself as version 1.000, while the version distributed with BC++ 3.0 identifies itself as version 1.0; the former is 10864 bytes, the latter 22180 bytes. The BC2.0 version is a DPMI loader, while the BC3.0 version also adds a DPMI host and DOS extender the BC++ 2.0 version displays an error message if called with BX values other than 0001h-0008h SeeAlso: AX=1687h,AX=FB42h/BX=1001h,AX=FB43h --------E-2FFB42BX0002----------------------- INT 2F PU - Borland C++ 2.0 DPMILOAD.EXE - ALLOCATE MEMORY AX = FB42h BX = 0002h CX = size in bytes DX = bit flags bit 2: set to allocate DOS memory, clear for DPMI memory SI = selector of descriptor to be modified to access allocated memory DI = selector of a second descriptor to be modified Return: AX = ??? or 0000h on error CX:DX = linear base address of DPMI memory block SI:DI = handle for DPMI memory block or FFFFh:FFFFh ??? Note: two segment descriptors may be set if a code and an aliased data segment are required; if only one descriptor is needed, SI should equal DI on entry BUG: when allocating DOS memory, the code computes the linear address by multiplying the segment number by 4 rather than shifting by 4 SeeAlso: AX=FB42h/BX=0003h,AX=FB42h/BX=0008h,INT 31/AX=0501h --------E-2FFB42BX0002----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ALLOCATE MEMORY AX = FB42h BX = 0002h ES:SI -> memory block info (see below) Return: ??? Note: The version of DPMILOAD distributed with BC++ v2.0 identifies itself as version 1.000, while the version distributed with BC++ 3.0 identifies itself as version 1.0; the former is 10864 bytes, the latter 22180 bytes. SeeAlso: AX=FB42h/BX=0003h,AX=FB42h/BX=0008h,INT 31/AX=0501h Format of memory block info: Offset Size Description 00h WORD flags bit 0: set if data segment rather than code segment bit 1: information valid bit 2: set if DOS memory block rather than DPMI memory block bit 4: ??? bit 15: set if no LDT selectors for memory block??? 02h DWORD block size in bytes ---DPMI memory block--- 06h DWORD DPMI memory block handle ---DOS memory block--- 06h WORD real-mode segment of memory block 08h WORD selector of memory block --- 0Ah DWORD linear address of memory 0Eh WORD memory operation error code 0008h no more free LDT descriptors ---if flags bit 0 clear--- 10h WORD code segment selector for memory block or 0000h or FFFFh 12h WORD data alias selector for memory block or 0000h or FFFFh ---if flags bit 0 set--- 10h WORD data segment selector for memory block or 0000h or FFFFh 12h WORD unused??? --------E-2FFB42BX0003----------------------- INT 2F PU - Borland C++ DPMILOAD.EXE - GET AVAILABLE MEMORY AX = FB42h BX = 0003h Return: DX:AX = size of largest free block in paragraphs 0000h:0000h on error (BC3.0 version only) Note: AX and DX are destroyed on error, but no other error indicator is returned, under the BC++ 2.0 version of DPMILOAD SeeAlso: AX=FB42h/BX=0002h --------E-2FFB42BX0004----------------------- INT 2F PU - Borland C++ DPMILOAD.EXE - LOAD PROTECTED-MODE EXECUTABLE??? AX = FB42h BX = 0004h DS:DX -> ASCIZ filename of protected-mode executable Return: CX = selector of ??? or 0000h ---BC3.0--- DX = status (0000h,FFF4h,others???) (see below) Note: the filename may also be terminated by a CR rather than a NUL under the BC++ 3.0 version of DPMILOAD Values for status: 0000h successful 0001h ??? failure 0002h invalid selector 0004h unknown error 0008h no more LDT descriptors available??? FFDEh unable to set descriptor FFDFh unable to get segment base address FFE0h ??? FFF2h invalid parameter value FFF4h component of filename too long (name not in 8.3 format) FFF5h pathname too long (>79 chars) FFF6h ??? FFF8h ??? FFF9h index out of range FFFAh ??? FFFCh invalid access to code segment??? FFFEh ??? FFFFh general error --------E-2FFB42BX0005----------------------- INT 2F PU - Borland C++ DPMILOAD.EXE - GET ADDRESS OF ??? BY NAME AX = FB42h BX = 0005h CX = selector of DPMILOAD data (see below) DS:DX -> ASCIZ or CR-terminated name of ??? (case ignored) Return: DX = status (see AX=FB42h/BX=0004h) 0000h successful AX:BX -> ??? FAR function (called with two words on top of stk) else BX destroyed SeeAlso: AX=FB42h/BX=0006h,AX=FB42h/BX=000Eh Format of DPMILOAD data: Offset Size Description 00h 12 BYTEs ??? 0Ch WORD ??? bit flags 0Eh 14 BYTEs ??? 1Ch WORD number of memory control records 1Eh 25 BYTEs ??? 37h BYTE ??? bit flags bit 4: data valid??? 38h 4 BYTEs ??? 3Ch WORD ??? 3Eh 12 BYTEs ??? 46h BYTE ??? counter 47h BYTE ??? 48h BYTE ??? 49h BYTE ??? 4Ah WORD ??? 4Ch 2 BYTEs ??? 4Eh WORD offset of array of 64-byte memory control records 52h WORD offset of name list (see below) 54h 4 BYTEs ??? 58h WORD offset of array of 6-byte objects 5Ah 8 BYTEs ??? 62h 9 BYTEs ASCIZ name for ??? 6Bh 9 BYTEs ASCIZ name for ??? ??? Format of name list entry [array]: Offset Size Description 00h BYTE length of name (00h if end of array) 01h N BYTEs name N+1 WORD 1-based index into array of unknown 6-byte objects Format of 6-byte objects: Offset Size Description 00h BYTE ??? 01h BYTE ??? 02h BYTE ??? 03h BYTE 1-based index of memory control record 04h WORD ??? Format of memory control record: Offset Size Description 00h 20 BYTEs memory block info (see AX=FB42h/BX=0002h) 14h 6 BYTEs ??? 1Ah BYTE ??? 1Bh 2 BYTEs ??? 1Dh BYTE ??? bit flags 1Eh 14 BYTEs ??? 2Ch DWORD pointer to ??? memory control record or 0000h:0000h 30h DWORD pointer to ??? memory control record or 0000h:0000h 34h DWORD pointer to next??? memory control record or 0000h:0000h 38h DWORD pointer to prev??? memory control record or 0000h:0000h 3Ch 4 BYTEs ??? Note: the pointers at offsets 2Ch and 30h form a doubly-linked list, as do the pointers at offsets 34h and 38h --------E-2FFB42BX0006----------------------- INT 2F PU - Borland C++ DPMILOAD.EXE - GET ADDRESS OF ??? BY NUMBER AX = FB42h BX = 0006h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) DX = 1-based index into array of ??? 6-byte objects Return: DX = status (see AX=FB42h/BX=0004h) 0000h successful AX:BX -> ??? FAR function (called with two words on top of stk) else BX destroyed SeeAlso: AX=FB42h/BX=0005h,AX=FB42h/BX=000Eh --------E-2FFB42BX0007----------------------- INT 2F PU - Borland C++ 2.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0007h CX = selector of ??? Return: ??? Note: The version of DPMILOAD distributed with BC++ v2.0 identifies itself as version 1.000, while the version distributed with BC++ 3.0 identifies itself as version 1.0; the former is 10864 bytes, the latter 22180 bytes. --------E-2FFB42BX0007----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0007h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) ??? Return: DX = status (see AX=FB42h/BX=0004h) 0000h successful AX = ??? --------E-2FFB42BX0008----------------------- INT 2F PU - Borland C++ 2.0 DPMILOAD.EXE - FREE MEMORY BLOCK AX = FB42h BX = 0008h CX = bit flags bit 2: set if DPMI memory, clear if DOS memory DX = selector of DOS memory block SI:DI = handle of DPMI memory block Return: DX = 0000h on error, unchanged if succcessful Note: The version of DPMILOAD distributed with BC++ v2.0 identifies itself as version 1.000, while the version distributed with BC++ 3.0 identifies itself as version 1.0; the former is 10864 bytes, the latter 22180 bytes. SeeAlso: AX=FB42h/BX=0002h --------E-2FFB42BX0008----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - FREE MEMORY BLOCK AX = FB42h BX = 0008h ES:SI -> memory block info (see AX=FB42h/BX=0002h"3.0") Return: ??? SeeAlso: AX=FB42h/BX=0009h --------E-2FFB42BX0009----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - RESIZE MEMORY BLOCK AX = FB42h BX = 0009h ES:SI -> memory block info (see AX=FB42h/BX=0002h"3.0") ??? Return: ??? SeeAlso: AX=FB42h/BX=0008h"3.0" --------E-2FFB42BX000A----------------------- INT 2F RU - Borland C++ 3.0 DPMILOAD.EXE - INIT DPMI HOST AND SPAWN SUBSHELL AX = FB42h BX = 000Ah CX = 0001h DX = ??? SI = ??? Return: after user exits subshell Notes: this call is used by DPMIRES; unlike most of the DPMILOAD calls, this function is not available in protected mode. the BC2.0 version of DPMILOAD is purely a DPMI loader, while the BC3.0 version also adds a DPMI host and DOS extender. SeeAlso: AX=FB42h/BX=0004h,AX=FB42h/BX=0015h --------E-2FFB42BX000B----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - UNUSED AX = FB42h BX = 000Bh --------E-2FFB42BX000C----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - FREE DESCRIPTORS FOR MEMORY BLOCK??? AX = FB42h BX = 000Ch ??? ES:SI -> memory block info ??? (see AX=FB42h/BX=0002h"3.0") Return: DX = status??? SeeAlso: AX=FB42h/BX=000Fh --------E-2FFB42BX000D----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - SIMULATE REAL MODE INTERRUPT AX = FB42h BX = 000Dh CX = number of words to copy from protected-mode to real mode stack DL = interrupt number DH = flags bit 0: reset the interrupt controller and A20 line ES:DI -> real-mode call structure (see INT 31/AX=0300h) Return: CX = status 0000h successful 0001h failed SeeAlso: INT 31/AX=0300h --------E-2FFB42BX000E----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET ADDRESS OF ??? AX = FB42h BX = 000Eh DS:DX -> ASCIZ or CR-terminated name of ??? Return: CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) corresponding to name, 0000h on error SeeAlso: AX=FB42h/BX=0006h,AX=FB42h/BX=001Fh --------E-2FFB42BX000F----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - REALLOCATE LDT DESCRPS TO MEMBLK??? AX = FB42h BX = 000Fh ES:SI -> memory block info (see AX=FB42h/BX=0002h"3.0") Return: ??? SeeAlso: AX=FB42h/BX=000Ch --------E-2FFB42BX0010----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - CONVERT SEGMENT TO SELECTOR AX = FB42h BX = 0010h DX = segment number Return: CX = status (see also AX=FB42h/BX=0004h) 0000h successful DX = selector number for descriptor 0008h failed SeeAlso: AX=FB42h/BX=0023h --------E-2FFB42BX0011----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0011h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful AX:BX -> ??? name 0002h invalid selector FFFEh ??? error --------E-2FFB42BX0012----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0012h CX = selector for ??? Return: CX = selector for ??? --------E-2FFB42BX0013----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0013h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) DX = 1-based index of ??? Return: CX = status (see also AX=FB42h/BX=0004h) 0000h successful BX = ??? or 0000h 0002h invalid selector FFF9h ??? error --------E-2FFB42BX0014----------------------- INT 2F RU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0014h ??? CX = 0001h Return: BX = 0000h Note: unlike most of the DPMILOAD functions, this call is available only in real or V86 mode SeeAlso: AX=FB42h/BX=000Ah --------E-2FFB42BX0015----------------------- INT 2F RU - Borland C++ 3.0 DPMILOAD.EXE - UNINSTALL AX = FB42h BX = 0015h CX = 0001h Return: ??? Note: unlike most of the DPMILOAD functions, this call is available only in real or V86 mode SeeAlso: AX=FB42h/BX=000Ah --------E-2FFB42BX0016----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET ??? AX = FB42h BX = 0016h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful CX = ??? --------E-2FFB42BX0017----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0017h CX = ??? DX = ??? ??? Return: DX = status (0000h,0001h) (see below) --------E-2FFB42BX0018----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - SET ??? AX = FB42h BX = 0018h CX = ??? --------E-2FFB42BX0019----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0019h CX = selector for ??? ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful CX = selector for ??? --------E-2FFB42BX001A----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 001Ah CX = selector for ??? ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful 0004h failed CX:BX -> ??? --------E-2FFB42BX001B----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 001Bh CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) DX = offset of ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful BX = selector for ??? CX = selector for ??? 0002h invalid selector --------E-2FFB42BX001C----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 001Ch ES = selector for DPMILOAD data (see AX=FB42h/BX=0005h) CX = 1-based index of ??? DX = 1-based index of ??? Return: DX = status (0000h,0002h,FFF9h) (see AX=FB42h/BX=0004h) --------E-2FFB42BX001D----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET ??? AX = FB42h BX = 001Dh Return: CX:DX = ??? --------E-2FFB42BX001E----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 001Eh CX = ??? ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful FFF7h ??? error CX:BX -> ??? --------E-2FFB42BX001F----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET ADDRESS OF ??? AX = FB42h BX = 001Fh DS:DX -> 8-character name of ??? ??? Return: CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) for ??? 0000h on error SeeAlso: AX=FB42h/BX=000Eh --------E-2FFB42BX0020----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - NULL FUNCTION??? AX = FB42h BX = 0020h Return: DX = ??? (always 0000h) --------E-2FFB42BX0021----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET PROCESSOR EXCEPTION HANDLER VECT AX = FB42h BX = 0021h CL = exception number (00h-1Fh) Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful AX:BX = selector:offset of handler FFF2h unable to get exception handler vector SeeAlso: AX=FB42h/BX=0022h,AX=FB42h/BX=0024h,INT 31/AX=0202h --------E-2FFB42BX0022----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - SET PROCESSOR EXCEPTION HANDLER VECT AX = FB42h BX = 0022h CL = exception number (00h-1Fh) SI:DX = selector:offset of new handler Return: DX = status (0000h,0004h,FFF2h) (see AX=FB42h/BX=0004h) SeeAlso: AX=FB42h/BX=0021h,AX=FB42h/BX=0025h,INT 31/AX=0203h --------E-2FFB42BX0023----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - CONVERT SELECTOR TO SEGMENT NUMBER AX = FB42h BX = 0023h CX = selector Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful CX = real-mode segment number FFF2h descriptor has invalid base address for real-mode segment SeeAlso: AX=FB42h/BX=0010h --------E-2FFB42BX0024----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET PROTECTED-MODE INTERRUPT VECTOR AX = FB42h BX = 0024h CL = interrupt number Return: DX = status (0000h) (see also AX=FB42h/BX=0004h) AX:BX = selector:offset of handler SeeAlso: AX=FB42h/BX=0025h,INT 31/AX=0204h --------E-2FFB42BX0025----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - SET PROTECTED-MODE INTERRUPT VECTOR AX = FB42h BX = 0025h CL = interrupt number SI:DX = selector:offset of new handler Return: DX = status (0000h,0004h,FFF2h) (see AX=FB42h/BX=0004h) SeeAlso: AX=FB42h/BX=0024h,INT 31/AX=0205h --------E-2FFB42BX0026----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - ??? AX = FB42h BX = 0026h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) DX = 1-based index of ??? ??? Return: DX = status (0000h,0002h,FFF9h) (see AX=FB42h/BX=0004h) 0000h successful BX = offset of ??? within data structure --------E-2FFB42BX0027----------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - GET ??? AX = FB42h BX = 0027h CX = selector of DPMILOAD data (see AX=FB42h/BX=0005h) DX = offset of ??? Return: DX = status (see also AX=FB42h/BX=0004h) 0000h successful BX = ??? --------E-2FFB42BX0080----------------------- INT 2F U - ??? - CALLED BY Borland C++ 3.0 DPMILOAD.EXE AX = FB42h BX = 0080h ??? Return: AX = ??? ??? --------E-2FFB42BX0081----------------------- INT 2F U - ??? - CALLED BY Borland C++ 3.0 DPMILOAD.EXE AX = FB42h BX = 0081h ??? Return: AX = ??? ??? --------E-2FFB42BX1001----------------------- INT 2F U - Borland RTM.EXE 1.0 - INSTALLATION CHECK??? AX = FB42h BX = 1001h Return: BX = 0000h SeeAlso: AX=FB42h/BX=0001h,AX=FB42h/BX=1002h,AX=FB42h/BX=1003h --------E-2FFB42BX1002----------------------- INT 2F U - Borland RTM.EXE 1.0 - ??? AX = FB42h BX = 1002h ??? Return: ??? SeeAlso: AX=FB42h/BX=1001h --------E-2FFB42BX1003----------------------- INT 2F U - Borland RTM.EXE 1.0 - ??? AX = FB42h BX = 1003h ??? Return: ??? SeeAlso: AX=FB42h/BX=1001h --------E-2FFB43----------------------------- INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - NULL FUNCTION AX = FB43h BX = subfunction (at least 0000h-000Eh) Notes: this function is only present in protected mode; it does nothing but an immediate IRET DPMILOAD.EXE itself calls various subfunctions: subfunction 0004h is called with CX=selector of ???, DI=selector of DPMILOAD data subfunction 0008h is called with CX=selector of DPMILOAD data SeeAlso: AX=FB42h/BX=0001h --------a-2FFB64----------------------------- INT 2F U - AutoBraille v1.1A - GET ??? AX = FB64h Return: AX = ??? (0006h seen) Program: AutoBraille is a shareware text-to-braille converter by KANSYS, Inc. --------E-2FFBA1BX0081----------------------- INT 2F U - TKERNEL (Borland DOS extender) - INSTALLATION CHECK AX = FBA1h BX = 0081h ES:DI -> 16-byte buffer Return: if installed, first four bytes of ES:DI buffer are "IABH" Program: TKERNEL is a licensed version of AI Architects/Ergo's OS/x86. Note: TKERNEL was present only in Borland C++ 2.0; with version 3.0, the DOS extender was moved into DPMILOAD. SeeAlso: AH=A1h,AX=F100h,AX=FBA1h/BX=0082h,AX=FBA1h/BX=0084h,INT 15/AX=BF02h SeeAlso: INT 21/AX=4403h"TKERNEL" --------E-2FFBA1BX0082----------------------- INT 2F U - TKERNEL (Borland DOS extender) - GET ENTRY POINT AX = FBA1h BX = 0082h ES:DI -> response buffer (see below) Return: ES:DI buffer filled SeeAlso: AX=FBA1h/BX=0081h,AX=FBA1h/BX=0084h Format of response buffer: Offset Size Description 00h 4 BYTEs signature "IABH" 04h DWORD pointer to FAR extender entry point Call entry point with: AX = function number 0000h initialize??? STACK: WORD ??? Return: AX = status??? STACK unchanged 0001h get version??? Return: AX = 0200h for v2.0.34 0002h get ??? Return: AX = ??? (011Eh or 0182h seen) 0003h load protected-mode executable STACK: DWORD -> ASCIZ filename of executable DWORD ??? DWORD -> program arguments (counted string plus CR) DWORD -> environment for protected-mode executable (terminated with two consecutive NULs) DWORD -> WORD buffer for ??? Return: AX = status??? STACK unchanged 0004h get descriptor STACK: WORD selector for which to get descriptor WORD segment number (when running in real mode) DWORD -> buffer for descriptor Return: CF clear if successful buffer filled CF set on error AX destroyed??? STACK unchanged 0005h ??? STACK: WORD selector for ??? WORD subfunction number??? 0000h run previously-loaded program??? 0001h ??? (similar to 0000h) 0002h 0003h 0005h ??? (similar to 0000h and 0001h) Return: AX = status??? STACK unchanged 0006h ??? STACK: WORD ??? DWORD -> WORD (call) max iterations of ??? (return) remaining iterations Return: AX = ??? STACK unchanged 0007h unused Return: AX = 0001h 0008h unused Return: AX = 0001h 0009h copy protected-mode memory into conventional memory STACK: WORD selector for source segment WORD segment of source if in real mode??? DWORD offset of source WORD number of bytes to copy DWORD -> low-memory destination Return: AX = status STACK unchanged 000Ah copy conventional memory into protected-mode memory STACK: WORD selector for destination segment WORD segment of destination if in real mode??? DWORD offset of destination WORD number of bytes to copy DWORD -> low-memory source Return: AX = status STACK unchanged 000Bh get ??? pointers STACK: WORD desired pointer 0000h get ??? 0002h get protected-mode CR3 0003h get 4K page table buffer pointer else Return: DX:AX = FFFFh:FFFFh Return: DX:AX = requested pointer STACK unchanged 000Ch set ??? pointers STACK: WORD desired pointer 0000h set ??? 0002h set protected-mode CR3 0003h set 4K page table buffer pointer else ignore DWORD new value for pointer Return: STACK unchanged 000Dh get ??? pointers STACK: WORD desired pointer 0000h get ??? 0001h get ??? 0002h get ??? 0003h get ??? 0004h get ??? 0005h get ??? 0006h get ??? 0007h get ??? else Return: DX:AX = FFFFh:FFFFh Return: DX:AX = desired pointer STACK unchanged 000Eh set ??? pointer STACK: WORD desired pointer 0000h set ??? 0001h set ??? 0002h set ??? 0003h set ??? 0004h set ??? 0005h set ??? 0006h set ??? 0007h set ??? else Return: DX:AX = FFFFh:FFFFh Return: STACK unchanged 000Fh get ??? Return: AX = ??? (seen 0008h) 0010h get ??? Return: AX = ??? 0011h determine whether selector is valid STACK: WORD possible selector Return: AX = selector or 0000h if invalid STACK unchanged 0012h get physical address STACK: WORD selector for desired segment WORD segment number if in real mode DWORD offset within segment Return: DX:AX = 32-bit physical address or 00000000h on error BX destroyed STACK unchanged 0013h ??? Note: normally jumps to code for function 0012h 0014h copy protected-mode memory to conventional memory, with ??? STACK: WORD selector for source segment WORD segment of source if in real mode??? DWORD offset of source WORD number of bytes to copy DWORD -> low-memory destination Return: AX = status??? STACK unchanged 0015h copy conventional memory to protected-mode memory, with ??? STACK: WORD selector for destination segment WORD segment of destination if in real mode??? DWORD offset of destination WORD number of bytes to copy DWORD -> low-memory source Return: AX = status??? STACK unchanged 0016h set ??? pointer STACK: WORD unused DWORD -> ??? or 0000h:0000h Return: AX = 0000h STACK unchanged 0017h allocate real-mode procedure??? STACK: DWORD ASCIZ name of procedure DWORD ??? DWORD address of subroutine to invoke Return: AX = status 0032h procedure by that name exists 0033h no more real-mode procedures available DX destroyed STACK unchanged 0018h unused Return: AX = 0001h 0019h get parameter block Return: DX:AX -> parameter block (format unknown at this time, but 92h bytes) (preceded by signature "!!PARAM-BLOCK!!") 001Ah get ??? Return: AX = ??? (0148h seen) 001Bh free real-mode procedure??? STACK: DWORD -> ASCIZ name of procedure Return: ??? STACK unchanged 001Ch check whether packets from protected mode task pending Return: AX = 0001h if packets pending, 0000h if not 001Dh set ??? STACK: DWORD ??? or 0000h:0000h Return: AX,BX destroyed STACK unchanged 001Eh ??? STACK: WORD ??? (high byte ignored) DWORD -> data structure (see below) Return: AX,BX,CX,DX destroyed data structure updated STACK unchanged Format of data structure Offset Size Description 00h 2 BYTEs unused 02h WORD ??? 04h WORD ??? 06h WORD ??? 08h 2 BYTEs unused 0Ah WORD ??? 0Ch WORD (call) ??? (return) offset of this data structure (BUG?) 001Fh set ??? STACK: WORD ??? (set to 0001h if zero) Return: AX destroyed STACK unchanged 0020h ??? STACK: DWORD -> ??? (8 bytes of data) Return: AX = ??? STACK unchanged 0021h ??? STACK: DWORD -> ??? (8 bytes of data) WORD ??? WORD ??? Return: AX = ??? STACK unchanged 0022h ??? STACK: DWORD -> ??? (8 bytes of data) DWORD -> 4-byte buffer for results Return: AX = ??? STACK unchanged 0023h ??? STACK: DWORD -> ??? (8 bytes of data) Return: AX = ??? STACK unchanged 0024h set ??? STACK: WORD ??? Return: AX destroyed STACK unchanged 0025h get ??? Return: AX = ??? (value set with func 0024h) 0026h BUG: jumps to hyperspace due to fencepost error FFFFh set DOS memory management functions BX:SI -> FAR routine for allocating DOS memory (called with AH=48h,BX=number of paragraphs to alloc; returns CF clear, AX=segment of allocated memory, or CF set on error) CX:DI -> FAR routine for freeing DOS memory (called with AH=49h,ES=segment of block to free; returns CF set on error,AX=error code) Note: each of these pointers normally points at INT 21/RETF other Return: AX = 0001h Note: BX may be destroyed by any of the API calls --------E-2FFBA1BX0084----------------------- INT 2F U - TKERNEL (Borland DOS extender) - UNINSTALL AX = FBA1h BX = 0084h ES:DI -> response buffer (see below) Return: ES:DI buffer filled SeeAlso: AX=FBA1h/BX=0081h,AX=FBA1h/BX=0084h Format of response buffer: Offset Size Description 00h 4 BYTEs signature "IABH" 04h WORD success indicator 0001h failed (INT 2F hooked by another program) unchanged if successful 06h WORD segment of ??? 08h WORD segment of ??? memory block to free if nonzero 0Ah WORD segment of ??? memory block to free if nonzero --------s-2FFBFBES0000----------------------- INT 2F U - SoundBlaster speech driver - INSTALLATION CHECK AX = FBFBh ES = 0000h Return: ES nonzero if installed ES:BX -> entry point data structure (see below) SeeAlso: INT 80/BX=0000h,INT F3"SoundBlaster" Format of entry point data structure: Offset Size Description 00h 3 BYTEs signature "FB " 03h BYTE driver major version number??? 04h DWORD speech driver entry point 08h 24 BYTEs ??? 20h ? BYTEs data buffer for calling speech driver Call driver entry point with: AL = function 07h speak a string data buffer (see above) contains: BYTE length of string N BYTEs string to speak --------N-2FFE00BX4454----------------------- INT 2F - PC-NFS ??? - INSTALLATION CHECK AX = FE00h BX = 4454h ("DT") CX = 4B52h ("KR") DX = 4E4Dh ("NM") Return: AL = FFh if installed BX = 524Eh ("RM") CX = 4D44h ("MD") DX = 544Bh ("TK") Note: DV/X 1.10 DVPCNFS.DVR searches AH=FEh,FFh,C0h-FDh for a valid response SeeAlso: AX=FE08h --------N-2FFE00BX4454----------------------- INT 2F - PC-NFS ??? - INSTALLATION CHECK AX = FE00h BX = 4454h ("DT") CX = 4B52h ("KR") DX = 544Dh ("TM") Return: AL = FFh if installed BX = 5254h ("RT") CX = 4D44h ("MD") DX = 544Bh ("TK") Note: DV/X 1.10 DVPCNFS.DVR searches AH=FEh,FFh,C0h-FDh for a valid response SeeAlso: AX=FE08h --------U-2FFE00DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ TSRs - INSTALLATION CHECK/STATUS REPORT AX = FE00h DI = 4E55h ("NU") SI = TSR identifier 4346h ("CF") NCACHE-F (v5) / NCACHE (v6.0+) 4353h ("CS") NCACHE-S (v5 only) 4443h ("DC") DISKREET 444Dh ("DM") DISKMON 4653h ("FS") FILESAVE (v5) / EP (v6.0+) Return: SI = TSR reply lowercase version of SI on entry (i.e. SI OR 2020h) AH = status 00h installed but disabled internally 01h installed and enabled AL = status 00h NCACHE-x or DISKREET installed 01h FILESAVE / EP / DISKMON v6 installed 45h DISKMON v5 installed BX = length of *.INI file (DISKMON and FILESAVE/EP only) (see below) CX = segment of resident portion FFFFh if completely loaded high (NCACHE) ---FILESAVE/EP--- DL = ??? (apparently always 00h) ---DISKMON--- DX = ??? (apparently always 1AE6h [v5] / 1B86h [v6]) Note: the value returned in CX is incorrect for NCACHE 6.00 SeeAlso: AX=FE01h,AX=FE02h,AX=FE03h,AX=FE04h,AX=FE05h Format of DISKMON.INI file: Offset Size Description -6Ch 108 BYTEs (in memory copy only) list of filenames which are always protected: IBMBIO.COM/IBMDOS.COM, IO.SYS/MSDOS.SYS, TBIOS.SYS/TDOS.SYS, MIO.SYS/IO.BIN, COMMAND.COM 00h BYTE ??? always 01h 01h BYTE disk light (00h off, 01h on) 02h BYTE disk protection (00h off, 01h on) 03h BYTE protected areas 01h system area 02h files 03h system area and files 04h entire disk 04h BYTE floppy access (00h not allowed, 01h allowed) 05h 27 BYTEs filename extension list (9 entries) (lowercase, blank padded or = 000000h) 20h 240 BYTEs filename list (20 entries) (lowercase, name and extension blank padded, with '.') Note: CX:0508h -> copy in installed TSR (v5) CX:052Fh -> copy in installed TSR (v6) Format of FILESAVE.INI / EP.INI file: Offset Size Description 00h 26 BITs drive list (bit set: file protection on, cleared: off): 00h BYTE drives A: - H: 01h BYTE drives I: - P: 02h BYTE drives Q: - X: 03h BYTE drives Y: - Z: 04h BYTE which files to protect 00h all files 01h all files with extension in list 02h all files except those with extension in list 05h 27 BYTEs filename extension list (9 entries, uppercase, ASCIZ) 20h BYTE include files with archive bit clear (00h no, 01h yes) 21h WORD number of days after which files are purged (0 = never) 23h WORD max kilobytes of erased file space to hold (0 = all) Note: CX:03D2h -> copy in installed TSR (v5.0) CX:03F5h -> copy in installed TSR (v6.0) --------U-2FFE01DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ TSRs - ENABLE AX = FE01h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI OR 2020h) AX = status 0002h successful (DISKMON, FILESAVE, EP) FE00h successful (NCACHE-x, DISKREET) Notes: if the enable/disable calls are used on DISKMON or NCACHE-x, the status report generated by the programs still indicates the previous state, and DISKMON.INI is not updated apparently has no effect on DISKREET SeeAlso: AX=FE00h,AX=FE02h --------U-2FFE02DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ TSRs - DISABLE AX = FE02h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI OR 2020h) AX = status 0004h successful (DISKMON, FILESAVE) FE00h successful (NCACHE-x, DISKREET) Note: (see AX=FE01h) SeeAlso: AX=FE00h,AX=FE01h --------U-2FFE03DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ TSRs - FLUSH BUFFERS AX = FE03h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI OR 2020h) AX = status 0006h successful??? Notes: only supported by DISKMON, FILESAVE, and NCACHE-x useful for flushing NCACHE before rebooting SeeAlso: AX=FE00h,AX=FE10h --------U-2FFE04DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ DISKMON, FILESAVE / EP - internal - ??? AX = FE04h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI or 2020h) AX = status 0008h successful??? SeeAlso: AX=FE00h --------U-2FFE05DI4E55----------------------- INT 2F U - NORTON UTILITIES 5.0+ DISKMON, FILESAVE / EP - internal - ??? AX = FE05h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI or 2020h) AX = status 000Ah successful??? Note: reportedly dangerous SeeAlso: AX=FE00h --------N-2FFE08----------------------------- INT 2F - PC-NFS ??? - GET ??? AX = FE08h Return: ES:BX -> ??? Notes: DV/X 1.10 DVPCNFS.DVR searches AH=FEh,FFh,C0h-FDh for a valid response both the driver responding to AX=FE00h/DX=4E4Dh and the one responding to AX=FE00h/DX=544Dh support this function SeeAlso: AX=FE00h/BX=4454h --------U-2FFE10DI4E55----------------------- INT 2F U - NORTON UTILITIES 6.0 NCACHE - REBOOT AX = FE10h DI = 4E55h ("NU") SI = TSR identifier (see AX=FE00h) Return: SI = TSR reply (lowercase version of entry SI, i.e. SI or 2020h) AX = status Note: probably used to flush NCACHE buffers and reboot when Ctrl-Alt-Del is detected SeeAlso: AX=FE03h --------N-2FFF00----------------------------- INT 2F - Topware Network Operating System - INSTALLATION CHECK AX = FF00h Return: AL = 00h not installed, OK to install = 01h not installed, not OK to install = FFh installed SeeAlso: AX=FF01h,INT 21/AH=FFh"Topware",INT 7A"Topware" --------N-2FFF01----------------------------- INT 2F - Topware Network Operating System - GET VERSION AX = FF01h Return: AX = version SeeAlso: AX=FF00h --------D-30--------------------------------- INT 30 - (NOT A VECTOR!) - DOS 1+ - FAR JMP instruction for CP/M-style calls the CALL 5 entry point does a FAR jump to here Note: under DOS 2+, the instruction at PSP:0005 points two bytes too low in memory SeeAlso: INT 21/AH=26h --------D-31--------------------------------- INT 31 - overwritten by CP/M jump instruction in INT 30 --------E-310000----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE LDT DESCRIPTORS AX = 0000h CX = number of descriptors to allocate Return: CF clear if successful AX = base selector CF set on error AX = error code (DPMI 1.0+) 0000h-7FFFh DOS error passed through by DPMI 8001h unsupported function 8002h object in wrong state for function 8003h system integrity would be endangered 8004h deadlock detected 8005h pending serialization request cancelled 8010h out of DPMI internal resources 8011h descriptor unavailable 8012h linear memory unavailable 8013h physical memory unavailable 8014h backing store unavailable 8015h callback unavailable 8016h handle unavailable 8017h maximum lock count exceeded 8018h shared memory already serialized exclusively by another 8019h shared memory already serialized shared by another client 8021h invalid value for numeric or flag parameter 8022h invalid segment selector 8023h invalid handle 8024h invalid callback 8025h invalid linear address 8026h request not supported by hardware Notes: DPMI is the DOS Protected-Mode Interface the base and limit of the returned descriptors will be 0, and the type will be "data" add the value returned by INT 31/AX=0003h to move to subsequent descriptors if multiple descriptors were allocated not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0001h,AX=000Dh,INT 21/AX=3501h --------E-310001----------------------------- INT 31 P - DPMI 0.9+ - FREE LDT DESCRIPTOR AX = 0001h BX = selector to free Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8022h) (see AX=0000h) Notes: only one descriptor is freed per call the program's initial CS, DS, and SS descriptors may be freed (DPMI 1.0+) any segment registers containing the freed selector are set to 0000h not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0000h,AX=000Ah,AX=000Dh,INT 21/AX=3502h --------E-310002----------------------------- INT 31 P - DPMI 0.9+ - SEGMENT TO DESCRIPTOR AX = 0002h BX = real mode segment Return: CF clear if successful AX = selector corresponding to real mode segment (64K limit) CF set on error AX = error code (DPMI 1.0+) (8011h) (see AX=0000h) Notes: multiple calls for the same real mode segment return the same selector the returned descriptor can never be modified or freed not supported by MS Windows 3.0 in Standard mode --------E-310003----------------------------- INT 31 P - DPMI 0.9+ - GET NEXT SELECTOR INCREMENT VALUE AX = 0003h Return: CF clear AX = value to add to get next sequential selector Notes: the increment will be a power of two not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0000h --------E-310004----------------------------- INT 31 P - DPMI 0.9+ - LOCK SELECTOR AX = 0004h BX = selector to lock (prevent paging) Return: ??? Note: although marked as reserved in versions 0.9 and 1.0 of the DPMI specification, this function is called by MS Windows TASKMAN, PROGMAN, and KERNEL SeeAlso: AX=0005h,AX=0600h --------E-310005----------------------------- INT 31 P - DPMI 0.9+ - UNLOCK SELECTOR AX = 0005h BX = selector to unlock (permit paging) Return: ??? Note: although marked as reserved in versions 0.9 and 1.0 of the DPMI specification, this function is called by MS Windows TASKMAN, PROGMAN, and KERNEL SeeAlso: AX=0004h,AX=0601h --------E-310006----------------------------- INT 31 P - DPMI 0.9+ - GET SEGMENT BASE ADDRESS AX = 0006h BX = selector Return: CF clear if successful CX:DX = linear base address of segment CF set on error AX = error code (DPMI 1.0+) (8022h) (see AX=0000h) Note: not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0007h,INT 21/AX=3504h --------E-310007----------------------------- INT 31 P - DPMI 0.9+ - SET SEGMENT BASE ADDRESS AX = 0007h BX = selector CX:DX = linear base address Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8022h,8025h) (see AX=0000h) Notes: only modify descriptors allocated with INT 31/AX=0000h only the low 24 bits of the address will be used by 16-bit DPMI implementations even on a 386 or higher DPMI 1.0+ automatically reloads any segment registers containing the selector being modified not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0006h,AX=0008h,AX=0009h,AX=000Ch,INT 21/AX=3503h SeeAlso: INT 21/AH=E9h"OS/286" --------E-310008----------------------------- INT 31 P - DPMI 0.9+ - SET SEGMENT LIMIT AX = 0008h BX = selector CX:DX = segment limit Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8021h,8022h,8025h) (see AX=0000h) Notes: CX must be zero for 16-bit DPMI implementations limits greater than 1MB must be page aligned (low 12 bits set) only modify descriptors allocated with INT 31/AX=0000h DPMI 1.0+ automatically reloads any segment registers containing the selector being modified not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0007h,AX=0009h,AX=000Ch,INT 21/AX=3505h,INT 21/AH=E9h"OS/286" --------E-310009----------------------------- INT 31 P - DPMI 0.9+ - SET DESCRIPTOR ACCESS RIGHTS AX = 0009h BX = selector CL = access rights/type byte CH = 80386 extended rights/type byte (32-bit DPMI implementations only) Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8021h,8022h,8025h) (see AX=0000h) Notes: if the Present bit is clear, CL bits 0-3 may have any value DPMI 1.0+ automatically reloads any segment registers containing the selector being modified not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0007h,AX=0008h,AX=000Ch,INT 21/AX=2514h --------E-31000A----------------------------- INT 31 P - DPMI 0.9+ - CREATE ALIAS DESCRIPTOR AX = 000Ah BX = selector Return: CF clear if successful AX = new data selector CF set on error AX = error code (DPMI 1.0+) (8011h,8022h) (see AX=0000h) Notes: fails if selector in BX is not a code segment or is invalid use INT 31/AX=0001h to free new selector future changes to the original selector will not be reflected in the returned alias selector not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0001h --------E-31000B----------------------------- INT 31 P - DPMI 0.9+ - GET DESCRIPTOR AX = 000Bh BX = LDT selector ES:(E)DI -> 8-byte buffer for copy of descriptor Return: CF clear if successful buffer filled CF set on error AX = error code (DPMI 1.0+) (8022h) (see AX=0000h) Notes: 16-bit programs use ES:DI as pointer, 32-bit must use ES:EDI not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=000Ch --------E-31000C----------------------------- INT 31 P - DPMI 0.9+ - SET DESCRIPTOR AX = 000Ch BX = LDT selector ES:(E)DI -> 8-byte buffer containing descriptor Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8021h,8022h,8025h) (see AX=0000h) Notes: 16-bit programs use ES:DI as pointer, 32-bit must use ES:EDI only modify descriptors allocated with INT 31/AX=0000h DPMI 1.0+ automatically reloads any segment registers containing the selector being modified not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=000Bh --------E-31000D----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE SPECIFIC LDT DESCRIPTOR AX = 000Dh BX = LDT selector Return: CF clear if successful descriptor allocated CF set on error AX = error code (DPMI 1.0+) (8011h,8022h) (see AX=0000h) Notes: free descriptor with INT 31/AX=0001h the first 16 descriptors (04h-7Ch) are reserved for this function, but some may already be in use by other applications under DPMI 0.9; DPMI 1.0 guarantees 16 descriptors per client not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0000h,AX=0001h --------E-31000E----------------------------- INT 31 P - DPMI 1.0+ - GET MULTIPLE DESCRIPTORS AX = 000Eh CX = number of descriptors to copy ES:(E)DI -> descriptor buffer (see below) Return: CF clear if successful descriptors copied CF set on error AX = error code (8022h) (see AX=0000h) CX = number of descriptors successfully copied Notes: 16-bit programs use ES:DI as pointer, 32-bit must use ES:EDI if the function fails, the first CX descriptors are valid; the remainder are not modified SeeAlso: AX=000Bh,AX=000Fh Format of descriptor buffer entry (one per descriptor to get): Offset Size Description 00h WORD selector (set by client) 02h QWORD descriptor (set by host) --------E-31000F----------------------------- INT 31 P - DPMI 1.0+ - SET MULTIPLE DESCRIPTORS AX = 000Fh CX = number of descriptors to copy ES:(E)DI -> descriptor buffer (see below) Return: CF clear if successful descriptors copied CF set on error AX = error code (8021h,8022h,8025h) (see AX=0000h) CX = number of descriptors successfully copied Notes: 16-bit programs use ES:DI as pointer, 32-bit must use ES:EDI if the function fails, the first CX descriptors are valid; the remainder are not modified DPMI 1.0+ automatically reloads any segment registers containing a selector being modified SeeAlso: AX=000Ch,AX=000Eh Format of descriptor buffer entry (one per descriptor to set): Offset Size Description 00h WORD selector 02h QWORD descriptor --------E-310100----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE DOS MEMORY BLOCK AX = 0100h BX = number of paragraphs to allocate Return: CF clear if successful AX = real mode segment of allocated block DX = first selector for allocated block CF set on error AX = DOS error code (07h,08h) (see INT 21/AH=59h) (DPMI 1.0+) DPMI error code (8011h) (see AX=0000h) BX = size (in paragraphs) of largest available block Notes: multiple contiguous selectors are allocated for blocks of more than 64K if the caller is a 16-bit program never modify or deallocate returned descriptors not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0101h,AX=0501h --------E-310101----------------------------- INT 31 P - DPMI 0.9+ - FREE DOS MEMORY BLOCK AX = 0101h DX = selector of block Return: CF set if successful CF set on error AX = DOS error code (07h,09h) (see INT 21/AH=59h) Notes: all descriptors allocated for the block are automatically freed DPMI 1.0+ automatically zeros any segment registers containing a selector freed by this function not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0100h,AX=0102h,AX=0502h --------E-310102----------------------------- INT 31 P - DPMI 0.9+ - RESIZE DOS MEMORY BLOCK AX = 0102h BX = new block size in paragraphs DX = selector of block Return: CF clear if successful CF set on error AX = DOS error code (07h,08h,09h) (see INT 21/AH=59h) (DPMI 1.0+) DPMI error code (8011h,8022h) (see AX=0000h) BX = maximum block size (in paragraphs) possible Notes: increasing the size of a block past a 64K boundary will fail if the next descriptor in the LDT is already in use shrinking a block past a 64K boundary will cause some selectors to be freed; DPMI 1.0+ automatically zeros any segment registers containing a selector freed by this function not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0100h --------E-310200----------------------------- INT 31 P - DPMI 0.9+ - GET REAL MODE INTERRUPT VECTOR AX = 0200h BL = interrupt number Return: CF clear CX:DX = segment:offset of real mode interrupt handler Note: the DPMI implementation is required to support all 256 vectors SeeAlso: AX=0201h,AX=0204h,INT 21/AX=2503h --------E-310201----------------------------- INT 31 P - DPMI 0.9+ - SET REAL MODE INTERRUPT VECTOR AX = 0201h BL = interrupt number CX:DX = segment:offset of real mode handler Return: CF clear Note: all memory that may be touched by a hardware interrupt handler must be locked down with INT 31/AX=0600h SeeAlso: AX=0200h,AX=0205h,AX=0600h,INT 21/AX=2505h --------E-310202----------------------------- INT 31 P - DPMI 0.9+ - GET PROCESSOR EXCEPTION HANDLER VECTOR AX = 0202h BL = exception number (00h-1Fh) Return: CF clear if successful CX:(E)DX = selector:offset of handler CF set on error AX = error code (DPMI 1.0+) (8021h) (see AX=0000h) Notes: 16-bit programs receive the pointer in CX:DX, 32-bit programs in CX:EDX DPMI 1.0+ supports this function only for backward compatibility; use AX=0210h or AX=0211h instead not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0203h,AX=0210h,AX=0211h,INT 2F/AX=FB42h/BX=0021h --------E-310203----------------------------- INT 31 P - DPMI 0.9+ - SET PROCESSOR EXCEPTION HANDLER VECTOR AX = 0203h BL = exception number (00h-1Fh) CX:(E)DX = selector:offset of handler Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8021h,8022h) (see AX=0000h) Notes: 32-bit programs must supply an offset in EDX and use a 32-bit interrupt stack frame on chaining to the next exception handler the handler should return using a FAR return all fault stack frames contain an error code, but it is only valid for exceptions 08h and 0Ah-0Eh handlers will only be called if the exception occurs in protected mode, and the DPMI host does not transparently handle the exception the handler may change certain values on the stack frame (see below) DPMI 1.0+ supports this function only for backward compatibility; use AX=0212h or AX=0213h instead not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0202h,AX=0212h,AX=0213h,INT 2F/AX=FB42h/BX=0022h Format of stack frame for 16-bit programs: (offset from SS:SP) Offset Size Description 00h DWORD return CS:IP (do not change) 04h WORD error code 06h DWORD CS:IP of exception 0Ah WORD flags 0Ch DWORD SS:SP Format of stack frame for 32-bit programs: (offset from SS:ESP) Offset Size Description 00h DWORD return EIP (do not change) 04h WORD return CS selector (do not change) 06h WORD reserved (do not change) 08h DWORD error code 0Ch DWORD EIP of exception 10h WORD CS selector of exception 12h WORD reserved (do not change) 14h DWORD EFLAGS 18h DWORD ESP 1Ch WORD SS 1Eh WORD reserved (do not change) --------E-310204----------------------------- INT 31 P - DPMI 0.9+ - GET PROTECTED MODE INTERRUPT VECTOR AX = 0204h BL = interrupt number Return: CF clear CX:(E)DX = selector:offset of handler Notes: 16-bit programs use CX:DX, 32-bit programs use CX:EDX DPMI implementations are required to support all 256 vectors not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0200h,AX=0205h,INT 21/AX=2502h,INT 2F/AX=FB42h/BX=0024h --------E-310205----------------------------- INT 31 P - DPMI 0.9+ - SET PROTECTED MODE INTERRUPT VECTOR AX = 0205h BL = interrupt number CX:(E)DX = selector:offset of handler Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8022h) (see AX=0000h) Notes: 16-bit programs use CX:DX, 32-bit programs use CX:EDX 32-bit programs must use a 32-bit interrupt stack frame when chaining to the next handler DPMI implementations are required to support all 256 vectors hardware interrupts are reflected to the virtual machine's primary client, software interrupts to the current client not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0201h,AX=0204h,INT 21/AX=2504h,INT 2F/AX=FB42h/BX=0025h --------E-310210----------------------------- INT 31 P - DPMI 1.0+ - GET PROTECTED MODE EXTENDED PROCESSOR EXCEPTION HANDLER AX = 0210h BL = exception number (00h-1Fh) Return: CF clear if successful CX:(EDX) = selector:offset of exception handler CF set on error AX = error code (8021h) (see AX=0000h) Note: DPMI host reflects exception to current client's handler SeeAlso: AX=0202h,AX=0211h,AX=0212h --------E-310211----------------------------- INT 31 P - DPMI 1.0+ - GET REAL MODE EXTENDED PROCESSOR EXCEPTION HANDLER AX = 0211h BL = exception number (00h-1Fh) Return: CF clear if successful CX:(EDX) = selector:offset of exception handler CF set on error AX = error code (8021h) (see AX=0000h) Notes: returns address of protected-mode handler for real-mode exception DPMI host performs a switch to protected mode, reflects the exception to the virtual machine's primary client, and returns to real mode on the handler's completion SeeAlso: AX=0202h,AX=0210h,AX=0213h --------E-310212----------------------------- INT 31 P - DPMI 1.0+ - SET PROTECTED MODE EXTENDED PROCESSOR EXCEPTION HANDLER AX = 0212h BL = exception or fault number (00h-1Fh) CX:(E)DX = exception handler selector:offset Return: CF clear if successful CF set on error AX = error code (8021h,8022h) (see AX=0000h) Note: DPMI host sends exception to current client's handler SeeAlso: AX=0203h,AX=0210h,AX=0213h --------E-310213----------------------------- INT 31 P - DPMI 1.0+ - SET REAL MODE EXTENDED PROCESSOR EXCEPTION HANDLER AX = 0213h BL = exception or fault number (00h-1Fh) CX:(E)DX = exception handler selector:offset Return: CF clear if successful CF set on error AX = error code (8021h,8022h) (see AX=0000h) Notes: specifies address of protected-mode handler for real-mode exception DPMI host performs a switch to protected mode, reflects the exception to the virtual machine's primary client, and returns to real mode on the handler's completion SeeAlso: AX=0203h,AX=0211h,AX=0212h --------E-310300----------------------------- INT 31 P - DPMI 0.9+ - SIMULATE REAL MODE INTERRUPT AX = 0300h BL = interrupt number BH = flags bit 0: reset the interrupt controller and A20 line (DPMI 0.9) reserved, must be 0 (DPMI 1.0+) others must be 0 CX = number of words to copy from protected mode to real mode stack ES:(E)DI = selector:offset of real mode call structure (see below) Return: CF clear if successful real mode call structure modified (all fields except SS:SP, CS:IP filled with return values from real mode interrupt) CF set on error AX = error code (DPMI 1.0+) (8012h,8013h,8014h,8021h)(see AX=0000h) protected mode stack unchanged Notes: 16-bit programs use ES:DI as pointer, 32-bit programs use ES:EDI CS:IP in the real mode call structure is ignored for this call, instead, the indicated interrupt vector is used for the address the flags in the call structure are pushed on the real mode stack to form an interrupt stack frame, and the trace and interrupt flags are clear on entry to the handler DPMI will provide a small (30 words) real mode stack if SS:SP is zero the real mode handler must return with the stack in the same state as it was on being called SeeAlso: AX=0302h,INT 21/AX=2511h,INT 21/AH=E3h"OS/286" SeeAlso: INT 2F/AX=FB42h/BX=000Dh Format of real mode call structure: Offset Size Description 00h DWORD EDI 04h DWORD ESI 08h DWORD EBP 0Ch DWORD reserved (00h) 10h DWORD EBX 14h DWORD EDX 18h DWORD ECX 1Ch DWORD EAX 20h WORD flags 22h WORD ES 24h WORD DS 26h WORD FS 28h WORD GS 2Ah WORD IP 2Ch WORD CS 2Eh WORD SP 30h WORD SS --------E-310301----------------------------- INT 31 P - DPMI 0.9+ - CALL REAL MODE PROCEDURE WITH FAR RETURN FRAME AX = 0301h BH = flags bit 0: reset the interrupt controller and A20 line (DPMI 0.9) reserved, must be 0 (DPMI 1.0+) others must be 0 CX = number of words to copy from protected mode to real mode stack ES:DI / ES:EDI = selector:offset of real mode call structure (see INT 31/AX=0300h) Return: CF clear if successful real mode call structure modified (all fields except SS:SP, CS:IP filled with return values from real mode interrupt) CF set on error AX = error code (DPMI 1.0+) (8012h,8013h,8014h,8021h)(see AX=0000h) protected mode stack unchanged Notes: 16-bit programs use ES:DI as pointer, 32-bit programs use ES:EDI the real mode procedure must exit with a FAR return DPMI will provide a small (30 words) real mode stack if SS:SP is zero the real mode handler must return with the stack in the same state as it was on being called SeeAlso: AX=0300h,AX=0302h,INT 21/AX=250Eh,INT 21/AH=E1h"OS/286" --------E-310302----------------------------- INT 31 P - DPMI 0.9+ - CALL REAL MODE PROCEDURE WITH IRET FRAME AX = 0302h BH = flags bit 0: reset the interrupt controller and A20 line (DPMI 0.9) reserved, must be 0 (DPMI 1.0+) others must be 0 CX = number of words to copy from protected mode to real mode stack ES:DI / ES:EDI = selector:offset of real mode call structure (see INT 31/AX=0300h) Return: CF clear if successful real mode call structure modified (all fields except SS:SP, CS:IP filled with return values from real mode interrupt) CF set on error AX = error code (DPMI 1.0+) (8012h,8013h,8014h,8021h)(see AX=0000h) protected mode stack unchanged Notes: 16-bit programs use ES:DI as pointer, 32-bit programs use ES:EDI the flags in the call structure are pushed on the real mode stack to form an interrupt stack frame, and the trace and interrupt flags are clear on entry to the handler the real mode procedure must exit with an IRET DPMI will provide a small (30 words) real mode stack if SS:SP is zero the real mode handler must return with the stack in the same state as it was on being called SeeAlso: AX=0300h --------E-310303----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE REAL MODE CALLBACK ADDRESS AX = 0303h DS:SI / DS:ESI = selector:offset of procedure to call ES:DI / ES:EDI = selector:offset of real mode call structure (see AX=0300h) Return: CF clear if successful CX:DX = segment:offset of real mode call address CF set on error AX = error code (DPMI 1.0+) (8015h) (see AX=0000h) Notes: the real mode call structure is static, causing reentrancy problems; its contents are only valid at the time of a callback the called procedure must modify the real mode CS:IP before returning values are returned to real mode by modifying the real mode call struc DPMI hosts must provide at least 16 callbacks per client SeeAlso: AX=0304h,AX=0C00h Values callback procedure is called with: DS:SI / DS:ESI = selector:offset of real mode SS:SP ES:DI / ES:EDI = selector:offset of real mode call structure SS:SP / SS:ESP = locked protected mode API stack interrupts disabled Return: (with IRET) ES:DI / ES:EDI = selector:offset of real mode call structure to restore --------E-310304----------------------------- INT 31 P - DPMI 0.9+ - FREE REAL MODE CALLBACK ADDRESS AX = 0304h CX:DX = real mode callback address Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8024h) (see AX=0000h) SeeAlso: AX=0303h --------E-310305----------------------------- INT 31 P - DPMI 0.9+ - GET STATE SAVE/RESTORE ADDRESSES AX = 0305h Return: CF clear AX = size in bytes of state buffer BX:CX = real mode address of procedure to save/restore state SI:DI / SI:EDI = protected mode procedure to save/restore state Notes: the buffer size will be zero if it is not necessary to preserve state 16-bit programs should call SI:DI, 32-bit programs should call SI:EDI this function is only needed if using the raw mode switch service SeeAlso: AX=0306h Values to call state-save procedures with: AL = direction 00h save state 01h restore state ES:DI / ES:EDI -> state buffer Return: all registers preserved --------E-310306----------------------------- INT 31 P - DPMI 0.9+ - GET RAW MODE SWITCH ADDRESSES AX = 0306h Return: CF clear BX:CX -> procedure to switch from real to protected mode SI:DI / SI:EDI -> procedure to switch from protected to real mode Notes: 16-bit programs should jump to SI:DI, 32-bit programs should use SI:EDI the caller must save and restore the state of the task with AX=0305h not supported by MS Windows 3.0 in Standard mode SeeAlso: AX=0305h Values to JUMP at mode-switch procedures with: AX = new DS CX = new ES DX = new SS BX / EBX = new SP / ESP SI = new CS DI / EDI = new IP / EIP Notes: BP/EBP is preserved across the call, but AX/EAX, BX/EBX, CX/ECX, DX/EDX, SI/ESI, and DI/EDI will be undefined; FS and GS will be 0000h interrupts will stay disabled during the entire mode switch if they are disabled on entry to the mode-switch procedure --------E-310400----------------------------- INT 31 P - DPMI 0.9+ - GET DPMI VERSION AX = 0400h Return: CF clear AH = major version of DPMI spec supported AL = two-digit minor version of DPMI spec supported BX = flags bit 0: running under an 80386 (32-bit) implementation bit 1: processor returns to real mode for reflected interrupts instead of V86 mode bit 2: virtual memory supported bit 3: reserved (undefined) others reserved (zero) CL = processor type (02h=80286, 03h=80386, 04h=80486) DH = curr value of virtual master interrupt controller base interrupt DL = curr value of virtual slave interrupt controller base interrupt SeeAlso: AX=0401h,INT 21/AX=250Ch,INT 2F/AX=1687h,INT 67/AX=DE0Ah --------E-310401----------------------------- INT 31 P - DPMI 1.0+ - GET DPMI CAPABILITIES AX = 0401h ES:(E)DI -> 128-byte buffer (see below) Return: CF clear if successful AX = capabilities bit 0: paged accessed/dirty supported (see AX=0506h,AX=0507h) bit 1: exceptions restartability supported bit 2: device mapping supported (see AX=0508h) bit 3: conventional memory mapping supported (see AX=0509h) bit 4: demand zero-fill supported bit 5: write-protect client capability supported bit 6: write-protect host capability supported bits 7-15 reserved CX = reserved (00h) DX = reserved (00h) buffer filled CF set on error (DPMI 0.9 only) SeeAlso: AX=0400h Format of buffer: Offset Size Description 00h BYTE host major version number 01h BYTE host minor version number 02h 126 BYTEs ASCIZ host vendor name --------E-310500----------------------------- INT 31 P - DPMI 0.9+ - GET FREE MEMORY INFORMATION AX = 0500h ES:DI / ES:EDI -> buffer for memory information (see below) Return: CF clear Notes: 16-bit programs use ES:DI, 32-bit programs use ES:EDI this function must be considered advisory because other applications may affect the results at any time after the call fields not supported by the DPMI implementation are filled with FFFFFFFFh DPMI 1.0+ supports this function solely for backward compatibility; use AX=050Bh instead SeeAlso: AX=0501h,AX=0604h Format of memory information: Offset Size Description 00h DWORD largest available block in bytes 04h DWORD maximum unlocked page allocation 08h DWORD maximum locked page allocation 0Ch DWORD total linear address space in pages 10h DWORD total unlocked pages 14h DWORD free pages 18h DWORD total physical pages 1Ch DWORD free linear address space in pages 20h DWORD size of paging file/partition in pages 24h 12 BYTEs reserved --------E-310501----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE MEMORY BLOCK AX = 0501h BX:CX = size in bytes Return: CF clear if successful BX:CX = linear address of block SI:DI = memory block handle for resizing and freeing block CF set on error AX = error code (DPMI 1.0+) (8012h-8014h,8016h,8021h)(see AX=0000h) Notes: no selectors are allocated the memory block is allocated unlocked (can be locked with AX=0600h) allocations are often page granular (see AX=0604h) SeeAlso: AX=0000h,AX=0100h,AX=0500h,AX=0502h,AX=0503h,AX=0504h,AX=0D00h SeeAlso: INT 2F/AX=FB42h/BX=0002h --------E-310502----------------------------- INT 31 P - DPMI 0.9+ - FREE MEMORY BLOCK AX = 0502h SI:DI = handle of memory block Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8023h) (see AX=0000h) Note: any selectors allocated for the memory block must also be freed, preferably before freeing the memory block SeeAlso: AX=0001h,AX=0101h,AX=0501h,AX=0D01h --------E-310503----------------------------- INT 31 P - DPMI 0.9+ - RESIZE MEMORY BLOCK AX = 0503h BX:CX = new size in bytes (nonzero) SI:DI = handle of memory block Return: CF clear if successful BX:CX = new linear address SI:DI = new handle of memory block CF set on error AX = error code (DPMI 1.0+) (8012h-8014h,8016h,8021h,8023h) (see AX=0000h) Notes: any selectors pointing at the block must be updated the previous memory block handle becomes invalid an error is returned if the new size is 0 SeeAlso: AX=0102h,AX=0501h,AX=0505h --------E-310504----------------------------- INT 31 P - DPMI 1.0+ - ALLOCATE LINEAR MEMORY BLOCK AX = 0504h EBX = page-aligned linear address of memory block (00000000h if any address is acceptable) ECX = size in bytes (nonzero) EDX = flags bit 0: set to create committed pages instead of uncommitted pages bits 1-31 reserved (0) Return: CF clear if successful EBX = linear address of memory block ESI = memory block handle CF set on error AX = error code (8001h,8012h-8014h,8016h,8021h,8025h)(see AX=0000h) Note: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients SeeAlso: AX=0501h,AX=0505h --------E-310505----------------------------- INT 31 P - DPMI 1.0+ - RESIZE LINEAR MEMORY BLOCK AX = 0505h ESI = memory block handle ECX = new size in bytes (nonzero) EDX = flags bit 0: create committed pages rather than uncommitted pages bit 1: segment descriptor update required ES:EBX -> buffer containing array of WORDs with selectors EDI = number of selectors in array bits 2-31 reserved (0) Return: CF clear if successful EBX = new linear base address ESI = new memory block handle CF set on error AX = error code (8001h,8012h-8014h,8016h,8021h,8023h)(see AX=0000h) Notes: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients the old memory block handle becomes invalid if EDX bit 1 set and the block's base address is changed, DPMI updates all descriptors for selectors in the update buffer which fall within the memory block SeeAlso: AX=0503h,AX=0504h --------E-310506----------------------------- INT 31 P - DPMI 1.0+ - GET PAGE ATTRIBUTES AX = 0506h ESI = memory block handle EBX = offset in memory block of first page ECX = number of pages ES:EDX -> array of WORDs to hold page attributes (see below) Return: CF clear if successful buffer filled CF set on error AX = error code (8001h,8023h,8025h) (see AX=0000h) Notes: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients if EBX is not page-aligned, it will be rounded down SeeAlso: AX=0504h,AX=0507h,INT 21/AX=251Dh,INT 21/AX=EB00h Format of page attribute words: bits 0-2 page type 000 uncommitted 001 committed 010 mapped (see AX=0508h,AX=0509h) other currently unused bit 3 page is read/write rather than read-only bit 4 accessed/dirty bits supplied in bits 5 and 6 bit 5 page has been accessed (only valid if bit 4 set) bit 6 page has been written (only valid if bit 4 set) bits 7-15 reserved (0) --------E-310507----------------------------- INT 31 P - DPMI 1.0+ - MODIFY PAGE ATTRIBUTES AX = 0507h ESI = memory block handle EBX = offset in memory block of first page ECX = number of pages ES:EDX -> array of WORDs with new page attributes (see AX=0506h) Return: CF clear if successful CF set on error AX = error code (8001h,8002h,8013h,8014h,8021h,8023h,8025h) (see AX=0000h) ECX = number of pages which have been set Notes: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients if EBX is not page-aligned, it will be rounded down SeeAlso: AX=0504h,AX=0506h,INT 21/AX=251Eh --------E-310508----------------------------- INT 31 P - DPMI 1.0+ - MAP DEVICE IN MEMORY BLOCK AX = 0508h ESI = memory block handle EBX = page-aligned offset within memory block of page(s) to be mapped ECX = number of pages to map EDX = page-aligned physical address of device Return: CF clear if successful CF set on error AX = error code (8001h,8003h,8023h,8025h) (see AX=0000h) Notes: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients support of this function is optional; hosts are also allowed to support the function for some devices but not others SeeAlso: AX=0504h,AX=0509h,AX=0800h,AX=0801h --------E-310509----------------------------- INT 31 P - DPMI 1.0+ - MAP CONVENTIONAL MEMORY IN MEMORY BLOCK AX = 0509h ESI = memory block handle EBX = page-aligned offset within memory block of page(s) to map ECX = number of pages to map EDX = page-aligned linear address of conventional (below 1M) memory Return: CF clear if successful CF set on error AX = error code (8001h,8003h,8023h,8025h) (see AX=0000h) Notes: only supported by 32-bit DPMI hosts, but may be used by 16-bit clients support of this function is optional SeeAlso: AX=0504h,AX=0508h,AX=0801h --------E-31050A----------------------------- INT 31 P - DPMI 1.0+ - GET MEMORY BLOCK SIZE AND BASE AX = 050AH SI:DI = memory block handle Return: CF clear if successful SI:DI = size in bytes BX:CX = base address CF set on error AX = error code (8023h) (see AX=0000h) SeeAlso: AX=0501h,AX=0504h --------E-31050B----------------------------- INT 31 P - DPMI 1.0+ - GET MEMORY INFORMATION AX = 050Bh ES:(E)DI -> 128-byte buffer for memory information (see below) Return: CF clear if successful CF set on error (DPMI 0.9 only) Note: 16-bit programs use ES:DI, 32-bit programs must use ES:EDI SeeAlso: AX=0500h Format of memory information: Offset Size Description 00h DWORD total allocated bytes of physical memory controlled by host 04h DWORD total allocated bytes of virtual memory controlled by host 08h DWORD total available bytes of virtual memory controlled by host 0Ch DWORD total allocated bytes of virtual memory for curr virtual mach 10h DWORD total available bytes of virtual memory for curr virtual mach 14h DWORD total allocated bytes of virtual memory for current client 18h DWORD total available bytes of virtual memory for current client 1Ch DWORD total locked bytes for current client 20h DWORD maximum locked bytes for current client 24h DWORD highest linear address available to current client 28h DWORD largest available memory block in bytes 2Ch DWORD minimum allocation unit in bytes 30h DWORD allocation alignment unit size in bytes 34h 76 BYTEs reserved (00h) --------E-310600----------------------------- INT 31 P - DPMI 0.9+ - LOCK LINEAR REGION AX = 0600h BX:CX = starting linear address SI:DI = size of region in bytes Return: CF clear if successful CF set on error none of the memory is locked AX = error code (DPMI 1.0+) (8013h,8017h,8025h) (see AX=0000h) Notes: pages at beginning and end will be locked if the region overlaps them may be called multiple times for a given page; the DPMI host keeps a lock count for each page SeeAlso: AX=0004h,AX=0601h,INT 21/AX=251Ah,INT 21/AX=EB06h --------E-310601----------------------------- INT 31 P - DPMI 0.9+ - UNLOCK LINEAR REGION AX = 0601h BX:CX = starting linear address SI:DI = size of region in bytes Return: CF clear if successful CF set on error none of the memory is unlocked AX = error code (DPMI 1.0+) (8002h,8025h) (see AX=0000h) Notes: pages at beginning and end will be unlocked if the region overlaps them memory whose lock count has not reached zero remains locked SeeAlso: AX=0005h,AX=0600h,INT 21/AX=251Bh,INT 21/AX=EB07h --------E-310602----------------------------- INT 31 P - DPMI 0.9+ - MARK REAL MODE REGION AS PAGEABLE AX = 0602h BX:CX = starting linear address SI:DI = size of region in bytes Return: CF clear if successful CF set on error none of the memory is made pageable AX = error code (DPMI 1.0+) (8002h,8025h) (see AX=0000h) Notes: must relock all unlocked real mode memory before terminating process for DPMI 0.9; DPMI 1.0+ automatically relocks real mode memory pages at beginning and end will be unlocked if the region overlaps them pageability of real mode pages is binary, not a count SeeAlso: AX=0600h,AX=0603h --------E-310603----------------------------- INT 31 P - DPMI 0.9+ - RELOCK REAL MODE REGION AX = 0603h BX:CX = starting linear address SI:DI = size of region in bytes Return: CF clear if successful CF set on error none of the memory is relocked AX = error code (DPMI 1.0+) (8002h,8013h,8025h) (see AX=0000h) Notes: pages at beginning and end will be relocked if the region overlaps them pageability of real mode pages is binary, not a count SeeAlso: AX=0602h --------E-310604----------------------------- INT 31 P - DPMI 0.9+ - GET PAGE SIZE AX = 0604h Return: CF clear if successful BX:CX = page size in bytes CF set on error AX = error code (DPMI 1.0+) 8001h unsupported, 16-bit host --------E-310700----------------------------- INT 31 P - DPMI 0.9+ - MARK PAGES AS PAGING CANDIDATES AX = 0700h BX:CX = starting linear page number SI:DI = number of pages to mark as paging candidates Return: ??? Note: although marked as reserved in versions 0.9 and 1.0 of the DPMI specification, this function is called by MS Windows TASKMAN, PROGMAN, and KERNEL SeeAlso: AX=0701h,AX=0702h --------E-310701----------------------------- INT 31 P - DPMI 0.9+ - DISCARD PAGES AX = 0701h BX:CX = starting linear page number SI:DI = number of pages to discard Return: ??? Note: although marked as reserved in versions 0.9 and 1.0 of the DPMI specification, this function is called by MS Windows TASKMAN, PROGMAN, and KERNEL SeeAlso: AX=0700h,AX=0703h --------E-310702----------------------------- INT 31 P - DPMI 0.9+ - MARK PAGE AS DEMAND PAGING CANDIDATE AX = 0702h BX:CX = starting linear address SI:DI = number of bytes to mark as paging candidates Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8025h) (see AX=0000h) Notes: this function is advisory, and does not force immediate paging partial pages will not be discarded SeeAlso: AX=0700h,AX=0703h --------E-310703----------------------------- INT 31 P - DPMI 0.9+ - DISCARD PAGE CONTENTS AX = 0703h BX:CX = starting linear address SI:DI = number of bytes to mark as discarded Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8025h) (see AX=0000h) Notes: this function is advisory, and may be ignored by DPMI implementations partial pages will not be discarded SeeAlso: AX=0701h,AX=0702h --------E-310800----------------------------- INT 31 P - DPMI 0.9+ - PHYSICAL ADDRESS MAPPING AX = 0800h BX:CX = physical address (should be above 1 MB) SI:DI = size in bytes Return: CF clear if successful BX:CX = linear address which maps the requested physical memory CF set on error AX = error code (DPMI 1.0+) (8003h,8021h) (see AX=0000h) Notes: implementations may refuse this call because it can circumvent protects the caller must build an appropriate selector for the memory do not use for memory mapped in the first megabyte SeeAlso: AX=0002h,AX=0508h,AX=0509h,AX=0801h,INT 21/AX=250Ah,INT 21/AX=EB05h --------E-310801----------------------------- INT 31 P - DPMI 1.0+ - FREE PHYSICAL ADDRESS MAPPING AX = 0801h BX:CX = linear address returned by AX=0800h Return: CF clear if successful CF set on error AX = error code (8025h) (see AX=0000h) Note: should be called at end of access to device mapped with AX=0800h SeeAlso: AX=0508h,AX=0509h,AX=0800h,INT 21/AX=EB03h --------E-310900----------------------------- INT 31 P - DPMI 0.9+ - GET AND DISABLE VIRTUAL INTERRUPT STATE AX = 0900h Return: CF clear virtual interrupts disabled AL = 00h if previously disabled = 01h if previously enabled AH preserved Notes: the previous state may be restored simply by executing another INT 31 a CLI instruction may be used if the previous state is unimportant, but should be assumed to be very slow due to trapping by the host SeeAlso: AX=0901h,AX=0902h --------E-310901----------------------------- INT 31 P - DPMI 0.9+ - GET AND ENABLE VIRTUAL INTERRUPT STATE AX = 0901h Return: CF clear virtual interrupts enabled AL = 00h if previously disabled = 01h if previously enabled AH preserved Notes: the previous state may be restored simply by executing another INT 31 a STI instruction may be used if the previous state is unimportant, but should be assumed to be very slow due to trapping by the host SeeAlso: AX=0900h,AX=0902h --------E-310902----------------------------- INT 31 P - DPMI 0.9+ - GET VIRTUAL INTERRUPT STATE AX = 0902h Return: CF clear AL = 00h if disabled = 01h if enabled Note: should be used rather than PUSHF because that instruction yields the physical interrupt state rather than the per-client virtualized interrupt flag SeeAlso: AX=0900h,AX=0901h --------E-310A00----------------------------- INT 31 P - DPMI 0.9+ - GET VENDOR SPECIFIC API ENTRY POINT AX = 0A00h DS:SI / DS:ESI -> case-sensitive ASCIZ vendor name or identifier Return: CF clear if successful ES:DI / ES:EDI -> FAR extended API entry point DS, FS, GS, EAX, EBX, ECX, EDX, ESI, EBP destroyed CF set on error AX = error code (DPMI 1.0+) (8001h) (see AX=0000h) Notes: extended API parameters are vendor-specific DPMI 1.0+ supports this function solely for backward compatibility; use INT 2F/AX=168Ah instead SeeAlso: INT 2F/AX=168Ah --------E-310B00----------------------------- INT 31 P - DPMI 0.9+ - SET DEBUG WATCHPOINT AX = 0B00h BX:CX = linear address DL = size (1,2,4 bytes) DH = type (00h execute, 01h write, 02h read/write) Return: CF clear if successful BX = watchpoint handle CF set on error AX = error code (DPMI 1.0+) (8016h,8021h,8025h) (see AX=0000h) SeeAlso: AX=0212h,AX=0601h --------E-310B01----------------------------- INT 31 P - DPMI 0.9+ - CLEAR DEBUG WATCHPOINT AX = 0B01h BX = watchpoint handle Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8023h) (see AX=0000h) Note: the watchpoint handle is freed SeeAlso: AX=0B00h --------E-310B02----------------------------- INT 31 P - DPMI 0.9+ - GET STATE OF DEBUG WATCHPOINT AX = 0B02h BX = watchpoint handle Return: CF clear if successful AX = status flags bit 0: watch point has been executed since AX=0B00h or AX=0B03h CF set on error AX = error code (DPMI 1.0+) (8023h) (see AX=0000h) SeeAlso: AX=0B00h,AX=0B03h --------E-310B03----------------------------- INT 31 P - DPMI 0.9+ - RESET DEBUG WATCHPOINT AX = 0B03h BX = watchpoint handle Return: CF clear if successful CF set on error AX = error code (DPMI 1.0+) (8023h) (see AX=0000h) SeeAlso: AX=0B02h --------E-310C00----------------------------- INT 31 P - DPMI 1.0+ - INSTALL RESIDENT HANDLER INIT CALLBACK AX = 0C00h ES:(E)DI -> resident service provider structure (see below) Return: CF clear if successful CF set on error AX = error code (8015h,8021h,8025h) (see AX=0000h) Note: calling this function declares an intent to provide resident protected mode services after terminating with AX=0C01h SeeAlso: AX=0303h,AX=0C01h Format of resident service provider structure: Offset Size Description 00h QWORD descriptor for 16-bit data segment 08h QWORD descriptor for 16-bit code segment (zeros if not supported) 10h WORD offset of 16-bit callback procedure 12h 2 BYTEs reserved 14h QWORD descriptor for 32-bit data segment 1Ch QWORD descriptor for 32-bit code segment (zeros if not supported) 24h DWORD offset of 32-bit callback procedure --------E-310C01----------------------------- INT 31 P - DPMI 1.0+ - TERMINATE AND STAY RESIDENT AX = 0C01h BL = return code DX = number of paragraphs of DOS memory to reserve (0 or >= 6) Return: never Notes: should only be used if the program will only provide services to other DPMI programs any protected mode memory remains allocated to the program unless explicitly freed before this call must first call AX=0C00h or program will simply be terminated SeeAlso: AX=0C00h,INT 21/AH=31h --------E-310D00----------------------------- INT 31 P - DPMI 1.0+ - ALLOCATE SHARED MEMORY AX = 0D00h ES:(E)DI -> shared memory allocation request structure (see below) Return: CF clear if successful request structure updated CF set on error AX = error code (8012h,8013h,8014h,8016h,8021h) (see AX=0000h) Note: first 16 bytes of memory block will be initialized to zeros on the first allocation SeeAlso: AX=0501h,AX=0D01h,AX=0D02h Format of shared memory allocation request structure: Offset Size Description 00h DWORD requested length of shared memory block in bytes 04h DWORD (return) allocated length of block 08h DWORD (return) shared memory handle 0Ch DWORD (return) linear address of memory block 10h 6 BYTEs selector:offset32 of ASCIZ name for memory block (name max 128 bytes) 16h 2 BYTEs reserved 18h 4 BYTEs reserved (00h) --------E-310D01----------------------------- INT 31 P - DPMI 1.0+ - FREE SHARED MEMORY AX = 0D01h SI:DI = shared memory block handle Return: CF clear if successful CF set on error AX = error code (8023h) (see AX=0000h) Notes: handle becomes invalid after this call DPMI maintains separate global and virtual machine use counts for each shared memory block; when the global use counts reaches zero, the block is finally destroyed SeeAlso: AX=0502h,AX=0D00h --------E-310D02----------------------------- INT 31 P - DPMI 1.0+ - SERIALIZE SHARED MEMORY AX = 0D02h SI:DI = shared memory block handle DX = flags bit 0: return immediately rather than suspending if serialization unavailable bit 1: shared rather than exclusive serialization bits 2-15 reserved (0) Return: CF clear if successful CF set on error AX = error code (8004h,8005h,8017h-8019h,8023h) (see AX=0000h) Notes: an exclusive serialization blocks any other serialization attempts for the same block by another virtual machine; a shared serialization blocks attempts at exclusive serialization by another virtual machine hosts are not required to detect deadlock a client's interrupt handler can cancel a serialization call which caused it to block by calling AX=0D03h SeeAlso: AX=0D00h,AX=0D03h --------E-310D03----------------------------- INT 31 P - DPMI 1.0+ - FREE SERIALIZATION ON SHARED MEMORY AX = 0D03h SI:DI = shared memory block handle DX = flags bit 0: release shared serialization rather than exclusive serialztn bit 1: free pending serialization bits 2-15 reserved (0) Return: CF clear if successful CF set on error AX = error code (8002h,8023h) (see AX=0000h) SeeAlso: AX=0D00h,AX=0D02h --------E-310E00----------------------------- INT 31 P - DPMI 1.0+ - GET COPROCESSOR STATUS AX = 0E00h Return: CF clear AX = coprocessor status bit 0: numeric coprocessor enabled for current client bit 1: client is emulating coprocessor bit 2: numeric coprocessor is present bit 3: host is emulating coprocessor instructions bits 4-7: coprocessor type 0000 none 0010 80287 0011 80387 0100 80486 with numeric coprocessor other reserved bits 8-15 not used Note: supported by 386MAX v6.01, which otherwise only supports DPMI 0.9 SeeAlso: AX=0E01h --------E-310E01----------------------------- INT 31 P - DPMI 1.0+ - SET EMULATION AX = 0E01h BX = coprocessor flag bits bit 0: enable numeric coprocessor for current client bit 1: client will emulate coprocessor bits 2-15 not used Return: CF clear if successful CF set on error AX = error code (8026h) (see AX=0000h) Note: supported by 386MAX v6.01, which otherwise only supports DPMI 0.9 SeeAlso: AX=0E00h --------v-32--------------------------------- INT 32 - VIRUS - reportedly used by "Tiny" Viruses SeeAlso: INT 60"VIRUS" --------M-330000----------------------------- INT 33 - MS MOUSE - RESET DRIVER AND READ STATUS AX = 0000h Return: AX = status 0000h hardware/driver not installed FFFFh hardware/driver installed BX = number of buttons 0000h other than two 0002h two buttons (many drivers) 0003h Mouse Systems/Logitech three-button mouse FFFFh two buttons Notes: to use mouse on a Hercules-compatible monographics card in graphics mode, you must first set 0040h:0049h to 6 for page 0 or 5 for page 1, and then call this function. Logitech drivers v5.01 and v6.00 reportedly do not correctly use Hercules graphics in dual-monitor systems, while version 4.10 does. the Logitech mouse driver contains the signature string "LOGITECH" three bytes past the interrupt handler; many of the Logitech mouse utilities check for this signature. SeeAlso: AX=0011h,AX=0021h,AX=002Fh,INT 62/AX=007Ah,INT 74 --------M-330001----------------------------- INT 33 - MS MOUSE - SHOW MOUSE CURSOR AX = 0001h SeeAlso: AX=0002h,INT 16/AX=FFFEh,INT 62/AX=007Bh --------M-330002----------------------------- INT 33 - MS MOUSE - HIDE MOUSE CURSOR AX = 0002h Note: multiple calls to hide the cursor will require multiple calls to function 01h to unhide it. SeeAlso: AX=0001h,AX=0010h,INT 16/AX=FFFFh,INT 62/AX=007Bh --------M-330003----------------------------- INT 33 - MS MOUSE - RETURN POSITION AND BUTTON STATUS AX = 0003h Return: BX = button status bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems/Logitech mouse) CX = column DX = row SeeAlso: AX=0004h,AX=000Bh,INT 2F/AX=D000h"ZWmous" --------M-330004----------------------------- INT 33 - MS MOUSE - POSITION MOUSE CURSOR AX = 0004h CX = column DX = row Note: the row and column are truncated to the next lower multiple of the cell size; however, some versions of the Microsoft documentation incorrectly state that the coordinates are rounded SeeAlso: AX=0003h,INT 62/AX=0081h --------M-330005----------------------------- INT 33 - MS MOUSE - RETURN BUTTON PRESS DATA AX = 0005h BX = button 0000h left 0001h right 0002h middle (Mouse Systems/Logitech mouse) Return: AX = button states bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems/Logitech mouse) BX = number of times specified button has been pressed since last call CX = column at time specified button was last pressed DX = row at time specified button was last pressed SeeAlso: AX=0006h,INT 62/AX=007Ch --------M-330006----------------------------- INT 33 - MS MOUSE - RETURN BUTTON RELEASE DATA AX = 0006h BX = button 0000h left 0001h right 0002h middle (Mouse Systems/Logitech mouse) Return: AX = button states bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems/Logitech mouse) BX = number of times specified button has been released since last call CX = column at time specified button was last released DX = row at time specified button was last released SeeAlso: AX=0005h,INT 62/AX=007Ch --------M-330007----------------------------- INT 33 - MS MOUSE - DEFINE HORIZONTAL CURSOR RANGE AX = 0007h CX = minimum column DX = maximum column SeeAlso: AX=0008h,AX=0010h,AX=0031h,INT 62/AX=0080h --------M-330008----------------------------- INT 33 - MS MOUSE - DEFINE VERTICAL CURSOR RANGE AX = 0008h CX = minimum row DX = maximum row SeeAlso: AX=0007h,AX=0010h,AX=0031h,INT 62/AX=0080h --------M-330009----------------------------- INT 33 - MS MOUSE - DEFINE GRAPHICS CURSOR AX = 0009h BX = column of cursor hot spot in bitmap (-16 to 16) CX = row of cursor hot spot (-16 to 16) ES:DX -> bitmap 16 words screen mask 16 words cursor mask each word defines the sixteen pixels of a row, low bit rightmost SeeAlso: AX=000Ah,AX=0012h,AX=002Ah,INT 62/AX=007Fh --------M-33000A----------------------------- INT 33 - MS MOUSE - DEFINE TEXT CURSOR AX = 000Ah BX = hardware/software text cursor 0000h software CX = screen mask DX = cursor mask 0001h hardware CX = start scan line DX = end scan line Note: when the software cursor is selected, the char/attribute data at the current screen position is ANDed with the screen mask and then XORed with the cursor mask SeeAlso: AX=0009h,INT 62/AX=007Eh --------M-33000B----------------------------- INT 33 - MS MOUSE - READ MOTION COUNTERS AX = 000Bh Return: CX = number of mickeys mouse moved horizontally since last call DX = number of mickeys mouse moved vertically Notes: a mickey is the smallest increment the mouse can sense positive values indicate down/right SeeAlso: AX=0003h,AX=001Bh,AX=0027h --------M-33000C----------------------------- INT 33 - MS MOUSE - DEFINE INTERRUPT SUBROUTINE PARAMETERS AX = 000Ch CX = call mask bit 0 call if mouse moves bit 1 call if left button pressed bit 2 call if left button released bit 3 call if right button pressed bit 4 call if right button released bit 5 call if middle button pressed (Mouse Systems/Logitech mouse) bit 6 call if middle button released (Mouse Sys/Logitech mouse) ES:DX -> FAR routine Notes: when the subroutine is called, it is passed the following values: AX = condition mask (same bit assignments as call mask) BX = button state CX = cursor column DX = cursor row SI = horizontal mickey count DI = vertical mickey count some versions of the Microsoft documentation incorrectly state that CX bit 0 means call if mouse cursor moves, and swap the meanings of SI and DI SeeAlso: AX=0018h --------M-33000D----------------------------- INT 33 - MS MOUSE - LIGHT PEN EMULATION ON AX = 000Dh SeeAlso: AX=000Eh,INT 10/AH=04h --------M-33000E----------------------------- INT 33 - MS MOUSE - LIGHT PEN EMULATION OFF AX = 000Eh SeeAlso: AX=000Dh --------M-33000F----------------------------- INT 33 - MS MOUSE - DEFINE MICKEY/PIXEL RATIO AX = 000Fh CX = number of mickeys per 8 pixels horizontally (default 8) DX = number of mickeys per 8 pixels vertically (default 16) SeeAlso: AX=0013h,AX=001Ah,INT 62/AX=0082h --------M-330010----------------------------- INT 33 - MS MOUSE - DEFINE SCREEN REGION FOR UPDATING AX = 0010h CX,DX = X,Y coordinates of upper left corner SI,DI = X,Y coordinates of lower right corner Note: mouse cursor is hidden in the specified region, and needs to be explicitly turned on again SeeAlso: AX=0001h,AX=0002h,AX=0007h,AX=0010h"Genius MOUSE",AX=0031h --------M-330010----------------------------- INT 33 - Genius MOUSE - DEFINE SCREEN REGION FOR UPDATING AX = 0010h ES:DX -> update region list (see below) Notes: mouse cursor is hidden in the specified region, and needs to be explicitly turned on again this version of the call is described in an August 1988 version of the Genius Mouse programmer's reference; it has been changed to conform to the Microsoft version shown above by version 9.06 (and possibly earlier versions) SeeAlso: AX=0001h,AX=0002h,AX=0007h,AX=0010h"MS MOUSE" Format of update region list: Offset Size Description 00h WORD left-most column 02h WORD top-most row 04h WORD right-most column 06h WORD bottom-most row --------M-330011----------------------------- INT 33 - Genius Mouse 9.06 - GET NUMBER OF BUTTONS AX = 0011h Return: AX = FFFFh BX = number of buttons SeeAlso: AX=0000h --------M-330012----------------------------- INT 33 - MS MOUSE - SET LARGE GRAPHICS CURSOR BLOCK AX = 0012h BH = cursor width in words CH = rows in cursor BL = horizontal hot spot (-16 to 16) CL = vertical hot spot (-16 to 16) ES:DX -> bit map of screen and cursor maps Return: AX = FFFFh if successful SeeAlso: AX=0009h,AX=002Ah,AX=0035h --------M-330013----------------------------- INT 33 - MS MOUSE - DEFINE DOUBLE-SPEED THRESHOLD AX = 0013h DX = threshold speed in mickeys/second, 0000h = default of 64/second Note: if speed exceeds threshold, the cursor's on-screen motion is doubled SeeAlso: AX=000Fh,AX=001Bh,AX=002Ch --------M-330014----------------------------- INT 33 - MS MOUSE - EXCHANGE INTERRUPT SUBROUTINES AX = 0014h CX = call mask (see AX=000Ch) ES:DX -> FAR routine Return: CX = call mask of previous interrupt routine ES:DX = FAR address of previous interrupt routine SeeAlso: AX=000Ch,AX=0018h --------M-330015----------------------------- INT 33 - MS MOUSE - RETURN DRIVER STORAGE REQUIREMENTS AX = 0015h Return: BX = size of buffer needed to store driver state SeeAlso: AX=0016h,AX=0017h,AX=0042h --------M-330016----------------------------- INT 33 - MS MOUSE - SAVE DRIVER STATE AX = 0016h BX = size of buffer (see AX=0015h) ES:DX -> buffer for driver state Note: although not documented, many drivers appear to require BX on input SeeAlso: AX=0015h,AX=0017h --------M-330017----------------------------- INT 33 - MS MOUSE - RESTORE DRIVER STATE AX = 0017h BX = size of buffer (see AX=0015h) ES:DX -> buffer containing saved state Notes: although not documented, many drivers appear to require BX on input some mouse drivers range-check the values in the saved state based on the current video mode; thus, the video mode should be restored before the mouse driver's state is restored SeeAlso: AX=0015h,AX=0016h --------M-330018----------------------------- INT 33 - MS MOUSE - SET ALTERNATE MOUSE USER HANDLER AX = 0018h CX = call mask bit 0 call if mouse moves bit 1 call if left button pressed bit 2 call if left button released bit 3 call if right button pressed bit 4 call if right button released bit 5 call if shift button pressed during event bit 6 call if ctrl key pressed during event bit 7 call if alt key pressed during event ES:DX -> FAR routine Return: AX = 0018h if successful = FFFFh on error Notes: when the subroutine is called, it is passed the following values: AX = condition mask (same bit assignments as call mask) BX = button state CX = cursor column DX = cursor row SI = horizontal mickey count DI = vertical mickey count up to three handlers can be defined by separate calls to this function SeeAlso: AX=000Ch,AX=0014h,AX=0019h --------M-330019----------------------------- INT 33 - MS MOUSE - RETURN USER ALTERNATE INTERRUPT VECTOR AX = 0019h CX = call mask (see AX=0018h) Return: BX:DX = user interrupt vector CX = call mask (0000h if not found) Note: attempts to find a user event handler (defined by function 18h) whose call mask matches CX SeeAlso: AX=0018h --------M-33001A----------------------------- INT 33 - MS MOUSE - SET MOUSE SENSITIVITY AX = 001Ah BX = horizontal speed \ CX = vertical speed / (see AX=000Fh) DX = double speed threshold (see AX=0013h) SeeAlso: AX=0013h,AX=001Bh,INT 62/AX=0082h --------M-33001B----------------------------- INT 33 - MS MOUSE - RETURN MOUSE SENSITIVITY AX = 001Bh Return: BX = horizontal speed CX = vertical speed DX = double speed threshold SeeAlso: AX=000Bh,AX=001Ah --------M-33001C----------------------------- INT 33 - MS MOUSE - SET INTERRUPT RATE AX = 001Ch BX = rate 00h no interrupts allowed 01h 30 per second 02h 50 per second 03h 100 per second 04h 200 per second Notes: only available on InPort mouse values greater than 4 may cause unpredictable driver behavior --------M-33001D----------------------------- INT 33 - MS MOUSE - DEFINE DISPLAY PAGE NUMBER AX = 001Dh BX = display page number Note: the cursor will be displayed on the specified page SeeAlso: AX=001Eh --------M-33001E----------------------------- INT 33 - MS MOUSE - RETURN DISPLAY PAGE NUMBER AX = 001Eh Return: BX = display page number SeeAlso: AX=001Dh --------M-33001F----------------------------- INT 33 - MS MOUSE - DISABLE MOUSE DRIVER AX = 001Fh Return: AX = 001Fh unsuccessful FFFFh successful ES:BX = vector for INT 33h before mouse driver was first installed Notes: restores vectors for INT 10h and INT 71h (8086) or INT 74h (286/386) if you restore Int 33h to ES:BX, driver will be completely disabled many drivers return AX=001Fh even though the driver has been disabled SeeAlso: AX=0020h --------M-330020----------------------------- INT 33 - MS MOUSE - ENABLE MOUSE DRIVER AX = 0020h Return: AX = 0020h unsuccessful (or driver not installed) FFFFh successful Notes: restores vectors for INT 10h and INT 71h (8086) or INT 74h (286/386) which were removed by function 1Fh many drivers return AX=0020h even though the driver has been enabled SeeAlso: AX=001Fh --------M-330021----------------------------- INT 33 - MS MOUSE - SOFTWARE RESET AX = 0021h Return: AX = FFFFh if mouse driver installed BX = number of buttons (FFFFh = two buttons) 0021h if mouse driver not installed Note: identical to funtion 00h, but does not reset the mouse SeeAlso: AX=0000h --------M-330022----------------------------- INT 33 - MS MOUSE - SET LANGUAGE FOR MESSAGES AX = 0022h BX = language 00h English 01h French 02h Dutch 03h German 04h Swedish 05h Finnish 06h Spanish 07h Portugese 08h Italian Note: only available on international versions of the driver, US versions ignore this call SeeAlso: AX=0023h --------M-330023----------------------------- INT 33 - MS MOUSE - GET LANGUAGE FOR MESSAGES AX = 0023h Return: BX = language (see AX=0022h) Note: the US version of the driver always returns zero SeeAlso: AX=0022h --------M-330024----------------------------- INT 33 - MS MOUSE v6.26+ - GET SOFTWARE VERSION, MOUSE TYPE, AND IRQ NUMBER AX = 0024h Return: AX = FFFFh on error otherwise, BH = major version BL = minor version CH = type (1=bus, 2=serial, 3=InPort, 4=PS/2, 5=HP) CL = interrupt (0=PS/2, 2=IRQ2, 3=IRQ3,...,7=IRQ7) SeeAlso: AX=004Dh,AX=006Dh --------M-330025----------------------------- INT 33 - MS MOUSE v6.26+ - GET GENERAL DRIVER INFORMATION AX = 0025h Return: AX = general information bit 15: driver loaded as device driver rather than TSR bit 14: driver is newer integrated type bits 13,12: current cursor type 00 software text cursor 01 hardware text cursor 1X graphics cursor bits 11-8: interrupt rate (see AX=001Ch) bits 7-0: count of currently-active Mouse Display Drivers (MDD), the newer integrated driver type BX = cursor lock flag for OS/2 to prevent reentrancy problems CX = mouse code active flag (for OS/2) DX = mouse driver busy flag (for OS/2) --------M-330026----------------------------- INT 33 - MS MOUSE v6.26+ - GET MAXIMUM VIRTUAL COORDINATES AX = 0026h Return: BX = mouse-disabled flag CX = maximum virtual X (for current video mode) DX = maximum virtual Y SeeAlso: AX=0031h --------M-330026----------------------------- INT 33 - Genius Mouse 9.06 - ??? AX = 0026h Return: CX = 0204h if CX was 0105h on entry, else unchanged --------M-330027----------------------------- INT 33 - MS MOUSE v7.01+ - GET SCREEN/CURSOR MASKS AND MICKEY COUNTS AX = 0027h Return: AX = screen-mask value (or hardware cursor scan-line start for v7.02+) BX = cursor-mask value (or hardware cursor scan-line stop for v7.02+) CX = horizontal mickeys moved since last call DX = vertical mickeys moved since last call SeeAlso: AX=000Bh --------M-330028----------------------------- INT 33 - MS MOUSE v7.0+ - SET VIDEO MODE AX = 0028h CX = new video mode (call is NOP if 0000h) DH = Y font size (00h = default) DL = X font size (00h = default) Return: CL = status (00h = successful) Note: DX is ignored unless the selected video mode supports font size control SeeAlso: AX=0029h,INT 10/AH=00h --------M-330029----------------------------- INT 33 - MS MOUSE v7.0+ - ENUMERATE VIDEO MODES AX = 0029h CX = previous video mode 0000h get first supported video mode other get next supported mode after mode CX Return: CX = first/next video mode (0000h = no more video modes) BS:DX -> description of video mode or 0000h:0000h if none Notes: the enumerated video modes may be in any order and may repeat the description string (if available) is terminated by '$' followed by a NUL byte SeeAlso: AX=0028h --------M-33002A----------------------------- INT 33 - MS MOUSE v7.02+ - GET CURSOR HOT SPOT AX = 002Ah Return: AX = internal counter controlling cursor visibility BX = cursor hot spot column CX = cursor hot spot row DX = mouse type (00h none, 01h bus, 02h serial, 03h InPort, 04h IBM, 05h Hewlett-Packard) Note: the hot spot location is relative to the upper left corner of the cursor block and may range from -128 to +127 both horizontally and vertically SeeAlso: AX=0009h,AX=0012h,AX=0035h --------M-33002B----------------------------- INT 33 - MS MOUSE v7.0+ - LOAD ACCELERATION PROFILES AX = 002Bh BX = active acceleration profile 0001h-0004h or FFFFh to restore default curves ES:SI -> buffer containing acceleration profile data (see below) Return: AX = success flag SeeAlso: AX=002Ch,AX=002Dh,AX=0033h Format of acceleration profile data: Offset Size Description 00h BYTE length of acceleration profile 1 01h BYTE length of acceleration profile 2 02h BYTE length of acceleration profile 3 03h BYTE length of acceleration profile 4 04h 32 BYTEs threshold speeds for acceleration profile 1 24h 32 BYTEs threshold speeds for acceleration profile 2 44h 32 BYTEs threshold speeds for acceleration profile 3 64h 32 BYTEs threshold speeds for acceleration profile 4 84h 32 BYTEs speedup factor for acceleration profile 1 (10h = 1.0, 14h = 1.25, 20h = 2.0, etc) A4h 32 BYTEs speedup factor for acceleration profile 2 (10h = 1.0, 14h = 1.25, 20h = 2.0, etc) C4h 32 BYTEs speedup factor for acceleration profile 3 (10h = 1.0, 14h = 1.25, 20h = 2.0, etc) E4h 32 BYTEs speedup factor for acceleration profile 4 (10h = 1.0, 14h = 1.25, 20h = 2.0, etc) 104h 16 BYTEs name of acceleration profile 1 (blank-padded) 114h 16 BYTEs name of acceleration profile 2 (blank-padded) 124h 16 BYTEs name of acceleration profile 3 (blank-padded) 134h 16 BYTEs name of acceleration profile 4 (blank-padded) Note: unused bytes in the threshold speed fields are filled with 7Fh and unused bytes in the speedup factor fields are filled with 10h --------M-33002C----------------------------- INT 33 - MS MOUSE v7.0+ - GET ACCELERATION PROFILES AX = 002Ch Return: AX = status (0000h success) BX = currently-active acceleration profile ES:SI -> acceleration profile data (see AX=002Bh) SeeAlso: AX=002Bh,AX=002Dh,AX=0033h --------M-33002D----------------------------- INT 33 - MS MOUSE v7.0+ - SELECT ACCELERATION PROFILE AX = 002Dh BX = acceleration level 0001h-0004h to set profile, or FFFFh to get current profile Return: AX = status 0000h successful ES:SI -> 16-byte blank-padded name of acceleration profile FFFEh invalid acceleration curve number ES:SI destroyed BX = active acceleration curve number SeeAlso: AX=0013h,AX=002Bh,AX=002Ch,AX=002Eh --------M-33002E----------------------------- INT 33 - MS MOUSE v8.10+ - SET ACCELERATION PROFILE NAMES AX = 002Eh BL = flag (if nonzero, fill ES:SI buffer with default names on return) ES:SI -> 64-byte buffer for profile names (16 bytes per name) Return: AX = status (0000h success) ES:SI buffer filled with default names if BL nonzero on entry Note: not supported by Logitech driver v6.10 SeeAlso: AX=002Ch,AX=002Dh,AX=012Eh,AX=022Eh --------M-33002F----------------------------- INT 33 - MS MOUSE v7.02+ - MOUSE HARDWARE RESET AX = 002Fh Return: AX = status Note: invoked by mouse driver v8.20 on being called with INT 2F/AX=530Bh SeeAlso: INT 2F/AH=53h --------M-330030----------------------------- INT 33 - MS MOUSE v7.04+ - GET/SET BallPoint INFORMATION AX = 0030h CX = command 0000h get status of BallPoint device other set rotation angle and masks BX = rotation angle (-32768 to 32767 degrees) CH = primary button mask CL = secondary button mask Return: AX = button status (FFFFh if no BallPoint) bit 5: button 1 bit 4: button 2 bit 3: button 3 bit 2: button 4 other: zero BX = rotation angle (0-360 degrees) CH = primary button mask CL = secondary button mask --------M-330031----------------------------- INT 33 - MS MOUSE v7.05+ - GET CURRENT MINIMUM/MAXIMUM VIRTUAL COORDINATES AX = 0031h Return: AX = virtual X minimum BX = virtual Y minimum CX = virtual X maximum DX = virtual Y maximum Note: the minimum and maximum values are those set by AX=0007h and AX=0008h; the default is minimum = 0 and maximum = absolute maximum (see AX=0026h) SeeAlso: AX=0007h,AX=0008h,AX=0010h,AX=0026h --------M-330032----------------------------- INT 33 - MS MOUSE v7.05+ - GET ACTIVE ADVANCED FUNCTIONS AX = 0032h Return: AX = active function flags (FFFFh for v8.10) bit 15: function 0025h supported bit 14: function 0026h supported ... bit 0: function 0034h supported BX = ??? (0000h) officially unused CX = ??? (E000h) officially unused DX = ??? (0000h) officially unused --------M-330033----------------------------- INT 33 - MS MOUSE v7.05+ - GET SWITCH SETTINGS AND ACCELERATION PROFILE DATA AX = 0033h CX = size of buffer 0000h get required buffer size Return: AX = 0000h CX = required size (0154h for Logitech v6.10, 0159h for MS v8.10-8.20) other ES:DX -> buffer of CX bytes Return: AX = 0000h CX = number of bytes returned ES:DX buffer filled (see below) SeeAlso: AX=002Bh Format of data buffer: Offset Size Description 00h BYTE mouse type 01h BYTE current language 02h BYTE horizontal sensitivity (00h-64h) 03h BYTE vertical sensitivity (00h-64h) 04h BYTE double-speed threshold (00h-64h) 05h BYTE ballistic curve (01h-04h) 06h BYTE interrupt rate (01h-04h) 07h BYTE cursor override mask 08h BYTE laptop adjustment 09h BYTE memory type (00h-02h) 0Ah BYTE SuperVGA support (00h,01h) 0Bh BYTE rotation angle 0Ch BYTE ??? 0Dh BYTE primary button (01h-04h) 0Eh BYTE secondary button (01h-04h) 0Fh BYTE click lock enabled (00h,01h) 10h 324 BYTEs acceleration profile data (see AX=002Bh) 154h 5 BYTEs ??? (Microsoft driver, but not Logitech) --------M-330034----------------------------- INT 33 - MS MOUSE v8.0+ - GET INITIALIZATION FILE AX = 0034h Return: AX = status (0000h successful) ES:DX -> ASCIZ initialization (.INI) file name --------M-330035----------------------------- INT 33 - MS MOUSE v8.10+ - LCD SCREEN LARGE POINTER SUPPORT AX = 0035h BX = function FFFFh get current settings Return: AX = 0000h BH = style (see below) BL = size (see below) CH = threshold CL = active flag (00h disabled, 01h enabled) DX = delay other BH = style (00h normal, 01h reverse, 02h transparent) BL = size (00h small "1", 01h medium "1.5", 02h large "2") CH = threshold (00h-64h) CL = active flag (00h disable size change, 01h enable) DX = delay (0000h-0064h) Return: AX = 0000h Note: not supported by Logitech driver v6.10 SeeAlso: AX=0012h,AX=002Ah --------M-330042----------------------------- INT 33 - PCMOUSE - GET MSMOUSE STORAGE REQUIREMENTS AX = 0042h Return: AX = FFFFh successful BX = buffer size in bytes for functions 50h and 52h = 0000h MSMOUSE not installed = 0042h functions 42h, 50h, and 52h not supported Note: this function is also supported by the Genius Mouse 9.06 driver SeeAlso: AX=0015h,AX=0050h,AX=0052h --------M-330043----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - CONFIGURE MOUSE??? AX = 0043h CX:BX -> ??? buffer (see below) DL = ??? Return: ??? Notes: also calls routines for INT 33/AX=0053h and INT 33/AX=004Fh this function is also supported by the Genius Mouse 9.06 driver Format of buffer: Offset Size Description 00h WORD I/O port address 02h BYTE ??? 03h BYTE interrupt number 04h BYTE interrupt mask for interrupt controller 05h 5 BYTEs ??? --------M-330044CXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - TOGGLE ??? AX = 0044h CX = CDEFh Return: AX = new state of ??? Note: this function is also supported by the Genius Mouse 9.06 driver SeeAlso: AX=0045h --------M-330045CXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - TOGGLE ??? AX = 0045h CX = CDEFh Return: AX = new state of ??? Note: this function is also supported by the Genius Mouse 9.06 driver SeeAlso: AX=0044h --------M-330047----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - SET BUTTON ASSIGNMENTS AX = 0047h ES:BX -> button assignments (3 bytes, combinations of "L", "M", "R") Return: ??? Note: also supported by Genius Mouse 9.06 driver SeeAlso: AX=0067h --------M-330048BXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - GET ??? AX = 0048h BX = CDEFh Return: CX = ??? BH = ??? BL = ??? (if 50h, driver is using PS/2 pointing device BIOS interface) Note: also supported by Genius Mouse 9.06 driver --------M-33004B----------------------------- INT 33 - Z-NIX MOUSE DRIVER v7.04d - INSTALLATION CHECK AX = 004Bh Return: ES:DI -> signature/description string if installed Note: the signature string in v7.04d is "Z-NIX;BUS,AUX,Serial 3-byte and 5-byte Mouse Driver;ZMOUSE;v7.04d" --------M-33004CBXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - SET ??? FLAG AX = 004Ch BX = CDEFh Note: also supported by Genius Mouse 9.06 SeeAlso: AX=006Ch --------M-33004D----------------------------- INT 33 - MS MOUSE - RETURN POINTER TO COPYRIGHT STRING AX = 004Dh Return: ES:DI -> copyright message "*** This is Copyright 1983 Microsoft" Notes: also supported by Logitech, Kraft, Genius Mouse, and Mouse Systems mouse drivers in the Genius Mouse 9.06 driver, the ASCIZ signature "KYE" immediately follows the above copyright message (KYE Corp. manufactures the driver) SeeAlso: AX=0024h,AX=006Dh --------M-33004F----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - ENABLE MOUSE AX = 004Fh Return: nothing Note: also supported by Genius Mouse 9.06 SeeAlso: AX=0043h,AX=0053h --------M-330050----------------------------- INT 33 - PCMOUSE - SAVE MSMOUSE STATE AX = 0050h BX = buffer size (ignored by some driver versions) ES:DX -> buffer Return: AX = FFFFh if successful Notes: the buffer must be large enough to hold the entire state, or following data will be overwritten by state data in versions which ignore BX; use INT 33/AX=0042h to get the required size this function is also supported by the Genius Mouse 9.06 driver SeeAlso: AX=0042h,AX=0052h --------M-330052----------------------------- INT 33 - PCMOUSE - RESTORE MSMOUSE STATE AX = 0052h BX = buffer size (ignored by some driver versions) ES:DX -> buffer Return: AX = FFFFh if successful Note: also supported by Genius Mouse 9.06 driver SeeAlso: AX=0050h --------M-330053----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - DISABLE MOUSE AX = 0053h Return: nothing Note: also supported by Genius Mouse 9.06 SeeAlso: AX=0043h,AX=004Fh --------M-330054CXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - SELECT ULTRARES ACCELERATION LEVEL AX = 0054h CX = CDEFh BX = ??? (NOP if <= 0000h) Return: ??? Note: this function is also supported by the Genius Mouse 9.06 driver SeeAlso: AX=005Ah --------M-330055----------------------------- INT 33 - Kraft Mouse - GET ??? AX = 0055h Return: CX = ??? DX = ??? ES = ??? --------M-330058----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - ??? AX = 0058h Return: AX = CS of driver CX:BX = original INT 33 vector DX = ??? Note: this function is also supported by the Genius Mouse 9.06 driver --------M-33005A----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - SET ULTRARES ACCELERATIONS AX = 005Ah CX = number of WORDs to copy (max 0014h, but not range-checked) DX:SI -> buffer containing thresholds??? (CX words) DX:BX -> buffer containing acceleration values??? (9*14h words, only first CX of each 14h used) ??? Return: CF clear ??? Note: this function is also supported by Genius Mouse 9.06 SeeAlso: AX=0054h --------M-330061BXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - ??? AX = 0061h BX = CDEFh Return: CX = ??? Note: also supported by Genius Mouse 9.06 --------M-330067----------------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - GET MOUSE BUTTONS??? AX = 0067h Return: BL = number of buttons??? Note: also supported by Genius Mouse 9.06 SeeAlso: AX=0047h --------M-33006CBXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - CLEAR ??? FLAG AX = 006Ch BX = CDEFh Note: also supported by Genius Mouse 9.06 SeeAlso: AX=004Ch --------M-33006D----------------------------- INT 33 - MS MOUSE - GET VERSION STRING AX = 006Dh Return: ES:DI -> Microsoft version number of resident driver (see below) Notes: also supported by Logitech, Mouse Systems, Kraft, and Genius mouse drivers the Mouse Systems 7.01 and Genius Mouse 9.06 drivers report their Microsoft version as 7.00 even though they do not support any of the functions from 0025h through 002Dh supported by the MS 7.00 driver (the Genius Mouse driver supports function 0026h, but it differs from the Microsoft function) SeeAlso: AX=0024h,AX=004Dh,AX=266Ch Format of Microsoft version number: Offset Size Description 00h BYTE major version 01h BYTE minor version (BCD) --------M-330070BXABCD----------------------- INT 33 - Mouse Systems MOUSE DRIVER - POPUP.COM - INSTALLATION CHECK AX = 0070h BX = ABCDh Return: AX = ABCDh if installed BX:CX -> data structure (see below) Notes: this function is also supported by the Genius Mouse 9.06 driver the v7.01 POPUP.COM and menu drivers also check for the signature CDh ABh BAh DCh at offset -2Ch from the interrupt handler if POPUP is not loaded, the returned data structure contains the proper signature at offset 00h, but not at offset 08h Format of data structure: Offset Size Description 00h WORD signature ABCDh 02h DWORD pointer to info structure??? 06h 2 BYTEs ??? 08h WORD signature ABCDh Format of info structure: Offset Size Description 00h WORD driver version 02h 8 BYTEs ??? 0Ah WORD segment of ??? ??? --------M-330072BXABCD----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - ??? AX = 0072h BX = ABCDh Return: ??? Note: this function is also supported by the Genius Mouse 9.06 driver --------M-330073BXCDEF----------------------- INT 33 - Mouse Systems MOUSE DRIVER v7.01 - GET BUTTON ASSIGNMENTS AX = 0073h BX = CDEFh ES:DX -> 3-byte buffer for button assignments Return: CX = number of buttons??? ES:DX buffer filled (default is "LMR") Note: also supported by Genius Mouse 9.06 SeeAlso: AX=0067h --------M-33012E----------------------------- INT 33 - MS MOUSE v8.10+ - ??? AX = 012Eh BL = ??? Return: AX = 0000h Note: not supported by Logitech driver v6.10 SeeAlso: AX=002Eh,AX=022Eh --------M-33022E----------------------------- INT 33 - MS MOUSE v8.10+ - ??? AX = 022Eh BL = ??? Return: AX = 0000h Note: not supported by Logitech driver v6.10 SeeAlso: AX=002Eh,AX=012Eh --------M-33136C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 136Ch BX = ??? Return: AX = ??? BX = ??? --------M-33146C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - GET/SET ??? AX = 146Ch BL = function 00h set ??? BH = new value (zero/nonzero to clear/set) else get ??? Return: ??? --------M-33156C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - GET SIGNATURE AND VERSION STRINGS AX = 156Ch Return: ES:DI -> signature "LOGITECH MOUSE DRIVER" ES:SI -> version string, terminated with CRLF --------M-33166C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 166Ch BL = ??? 00h ??? 01h ??? other ??? BH = new value of ??? Return: AX = FFFFh --------M-33176C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 176Ch ??? Return: ??? --------M-33186C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 186Ch ??? Return: ??? --------M-33196C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 196Ch ??? Return: ??? --------M-331A6C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - GET ??? AX = 1A6Ch Return: AX = FFFFh BX = ??? CX = ??? SeeAlso: AX=1B6Ch --------M-331B6C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - SET ??? AX = 1B6Ch BX = new value for ??? (0000h-0003h) Return: AX = FFFFh SeeAlso: AX=1A6Ch --------M-331C6C----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 1C6Ch BX = ??? <42h ??? =42h ??? >42h ??? ES:DI -> ??? Return: AX = ??? --------M-331D6C----------------------------- INT 33 - LOGITECH MOUSE - GET COMPASS PARAMETER AX = 1D6Ch Return: BX = direction (0=north, 1=south, 2=east, 3=west) SeeAlso: AX=1E6Ch --------M-331E6C----------------------------- INT 33 - LOGITECH MOUSE - SET COMPASS PARAMETER AX = 1E6Ch BX = direction (0=north, 1=south, 2=east, 3=west) SeeAlso: AX=1D6Ch --------M-331F6C----------------------------- INT 33 - LOGITECH MOUSE - GET BALLISTICS INFORMATION AX = 1F6Ch Return: BX = 0=off, 1=on CX = 1=low, 2=high SeeAlso: AX=002Ch,AX=236Ch --------M-33206C----------------------------- INT 33 - LOGITECH MOUSE - SET LEFT OR RIGHT PARAMETER AX = 206Ch BX = parameter (00h = right, FFh = left) SeeAlso: AX=216Ch --------M-33216C----------------------------- INT 33 - LOGITECH MOUSE - GET LEFT OR RIGHT PARAMETER AX = 216Ch Return: BX = parameter (00h = right, FFh = left) SeeAlso: AX=206Ch --------M-33226C----------------------------- INT 33 - LOGITECH MOUSE - REMOVE DRIVER FROM MEMORY AX = 226Ch Note: this only frees memory; does not restore hooked interrupts --------M-33236C----------------------------- INT 33 - LOGITECH MOUSE - SET BALLISTICS INFORMATION AX = 236Ch BX = 0=off, 1=on CX = 1=low, 2=high SeeAlso: AX=002Ch,AX=1F6Ch --------M-33246C----------------------------- INT 33 - LOGITECH MOUSE - GET PARAMETERS AND RESET SERIAL MOUSE AX = 246Ch ES:DX -> parameter table buffer (see below) Return: AX = FFFFh if driver installed for serial mouse SeeAlso: AX=0000h,AX=256Ch Format of parameter table: Offset Size Description 00h WORD baud rate divided by 100 (serial mouse only) 02h WORD emulation (serial mouse only) 04h WORD report rate (serial mouse only) 06h WORD firmware revision (serial mouse only) 08h WORD 0 (serial mouse only) 0Ah WORD port (serial mouse only) 0Ch WORD physical buttons 0Eh WORD logical buttons --------M-33256CBX00h ----------------------- INT 33 - LOGITECH MOUSE - SET PARAMETERS AX = 256Ch BX = 00h set baud rate (serial mouse only) CX = rate (0=1200, 1=2400, 2=4800, 3=9600) = 01h set emulation (serial mouse only) CX = emulation 0 = 5 byte packed binary 1 = 3 byte packed binary 2 = hexadecimal 3 = relative bit pad 4 = not supported 5 = MM Series 6 = not supported 7 = Microsoft = 02h set report rate (serial mouse only) CX = rate (0=10, 1=20, 2=35, 3=50, 4=70, 5=100, 6=150) = 03h set port (serial mouse only) CX = port (1, 2) = 04h set mouse logical buttons CX = buttons (2, 3) Return: AX = FFFFh if driver installed for serial mouse SeeAlso: AX=246Ch,AX=276Ch --------M-33266C----------------------------- INT 33 - LOGITECH MOUSE - GET VERSION??? AX = 266Ch Return: BX = 'SS' CH = '4' major version number CL = '1' minor version number SeeAlso: AX=006Dh --------M-33276C----------------------------- INT 33 - LOGITECH MOUSE - ??? Tries MMSeries, Baud 2400 AX = 276Ch SeeAlso: AX=256Ch --------M-333000----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - INSTALLATION CHECK AX = 3000h Return: AX = FFFFh if installed BX = version number (BH = major, BL = minor) Program: SMD is a programmer's library by Andy Hakim which provides a graphics-style mouse cursor in text mode. PrecisePoint is an SMD-based TSR which replaces the block mouse cursor in text applications. SeeAlso: AX=0000h,AX=3001h,AX=3003h --------M-333001----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - ENABLE SMOOTH MOUSE AX = 3001h Return: AX = status (0000h = disabled, 0001h = enabled) Note: SMD remains disabled if running under Desqview or in graphics mode SeeAlso: AX=0001h,AX=0002h,AX=3002h --------M-333002----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - DISABLE SMOOTH MOUSE AX = 3002h Return: AX = status (0000h = disabled, 0001h = enabled) SeeAlso: AX=0001h,AX=0002h,AX=3000h,AX=3001h --------M-333003----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - GET INFORMATION AX = 3003h BL = data structure selector 00h Primary Bitmap (used for 25 line mode) 01h Secondary Bitmap (used for 43/50 line modes) 02h Sacrifice Character Map 03h Program Information Return: ES:DX -> selected data structure SeeAlso: AX=3000h Format of Primary/Secondary Bitmap [SMD_BITMAP_STRUCT] Offset Size Description 00h BYTE vertical size of bitmap (00h - 10h) 01h BYTE horizontal size of bitmap (00h - 10h) 02h BYTE vertical hotspot position (00h - 10h) 03h BYTE horizontal hotspot position (00h - 10h) 04h 16 WORDs cursor bitmap data 14h 16 WORDs screen bitmap data Format of Sacrifice Character Map [SMD_SMAP_STRUCT] Offset Size Description 00h BYTE bytes are character values (00h-FFh) used in place of the 01h BYTE actual character for the corresponding position on the screen 02h BYTE +--------------+ occupied by part or all of the mouse 03h BYTE | 0h | 1h | 2h | cursor 04h BYTE |----+----+----| 05h BYTE | 3h | 4h | 5h | 06h BYTE |----+----+----| 07h BYTE | 6h | 7h | 8h | 08h BYTE +--------------+ Format of Program Information [SMD_INFO_STRUCT] Offset Size Description 00h WORD segment of old interrupt 33h handler 02h WORD offset of old interrupt 33h handler 04h WORD PSP of SMD 06h BYTE ENABLE/DISABLE manual setting status 07h BYTE ENABLE/DISABLE internal usage status --------M-333004----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - RESERVED FUTURE EXPANSION AX = 3004h SeeAlso: AX=3000h --------M-333005----------------------------- INT 33 - Smooth Mouse Driver, PrecisePoint - RESERVED FUTURE EXPANSION AX = 3005h SeeAlso: AX=3000h --------M-334F00----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - GET ??? AX = 4F00h Return: AX = 004Fh if supported BX = ??? ES:DI -> ??? SeeAlso: AX=4F01h --------M-334F01----------------------------- INT 33 - LOGITECH MOUSE v6.10+ - ??? AX = 4F01h ES = ??? Return: AX = 004Fh if supported ES:DI -> ??? SeeAlso: AX=4F00h --------r-34--------------------------------- INT 34 - FLOATING POINT EMULATION - OPCODE D8h Desc: this interrupt is used to emulate floating-point instructions with an opcode of D8h Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 35,INT 3E --------r-35--------------------------------- INT 35 - FLOATING POINT EMULATION - OPCODE D9h Desc: this interrupt is used to emulate floating-point instructions with an opcode of D9h Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 34,INT 36 --------r-36--------------------------------- INT 36 - FLOATING POINT EMULATION - OPCODE DAh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DAh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 35,INT 37 --------r-37--------------------------------- INT 37 - FLOATING POINT EMULATION - OPCODE DBh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DBh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 36,INT 38 --------r-38--------------------------------- INT 38 - FLOATING POINT EMULATION - OPCODE DCh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DCh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 37,INT 39 --------O-3802------------------------------- INT 38 - PC-MOS/386 v3.0 - GET MOS INTERNAL DATA POINTER AH = 02h Return: AX = 0000h ES:BX -> ??? internal data structure Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating system by Software Links, Inc. SeeAlso: AH=04h,AH=10h,INT 21/AX=3000h,INT D4 --------O-3804------------------------------- INT 38 - PC-MOS/386 v3.0 - GET TASK CONTROL BLOCK AH = 04h Return: ES = segment of Task Control Block (TCB) (see below) SeeAlso: AH=02h,INT D4 Format of Task Control Block: Offset Size Description 00h 2 BYTEs signature "HT" 02h 23 BYTEs ??? 19h BYTE task time slice 1Ah 7 BYTEs ??? 21h 11 BYTEs name of currently executing task 2Ch 79 BYTEs ??? 7Bh 4 BYTEs user name 7Fh BYTE current output class 80h 7 BYTEs protection access rights, 2 bits per class (writeable!) ??? --------O-380703----------------------------- INT 38 - PC-MOS/386 v3.0 - WAIT FOR KEYPRESS OR TIMEOUT AX = 0703h CX = timeout (in seconds???) Return: AH bit 0 set if key pressed, clear otherwise SeeAlso: INT 16/AH=00h,INT D4 --------O-3810------------------------------- INT 38 - PC-MOS/386 v3.0 - ENTER NATIVE 386 EXECUTION MODE AH = 10h CX = NCA (???) length in bytes (at least 1024???) DX = NCA segment Return: in protected mode all segment registers converted to appropriate selectors Note: MS-DOS calls are available in protected mode SeeAlso: AH=11h,AH=12h,INT 2F/AX=1687h,INT 67/AX=DE0Ch,INT D4 --------O-3811------------------------------- INT 38 - PC-MOS/386 v3.0 - ALLOCATE NATIVE MODE MEMORY BLOCK AH = 11h EBX = block length Return: ES = selector for allocated block SeeAlso: AH=10h,AH=12h,INT D4 --------O-3812------------------------------- INT 38 - PC-MOS/386 v3.0 - FREE NATIVE MODE MEMORY BLOCK AH = 12h ES = selector for block to free SeeAlso: AH=10h,AH=11h,INT D4 --------r-39--------------------------------- INT 39 - FLOATING POINT EMULATION - OPCODE DDh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DDh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 38,INT 3A --------r-3A--------------------------------- INT 3A - FLOATING POINT EMULATION - OPCODE DEh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DEh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 39,INT 3B --------r-3B--------------------------------- INT 3B - FLOATING POINT EMULATION - OPCODE DFh Desc: this interrupt is used to emulate floating-point instructions with an opcode of DFh Note: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt SeeAlso: INT 3A,INT 3C --------r-3C--------------------------------- INT 3C - FLOATING POINT EMULATION - INSTRUCTIONS WITH SEGMENT OVERRIDE Notes: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt the generated code is CD 3C xy mm .... where xy is a modified ESC instruction and mm is the modR/M byte. The xy byte appears to be encoded as s s 0 1 1 x x x or s s 0 0 0 x x x where "ss" specifies the segment override: 00 -> DS: 01 -> SS: 10 -> CS: 11 -> ES: SeeAlso: INT 3B,INT 3D --------r-3D--------------------------------- INT 3D - FLOATING POINT EMULATION - STANDALONE FWAIT Notes: the floating-point emulators in Borland and Microsoft languages and Lahey FORTRAN use this interrupt this vector is modified but not restored by Direct Access v4.0, and may be left dangling by other programs written with the same version of compiled BASIC SeeAlso: INT 3C,INT 3E --------r-3E--------------------------------- INT 3E - FLOATING POINT EMULATION - Borland LANGUAGES "SHORTCUT" CALL Notes: the two bytes following the INT 3E instruction are the subcode and a NOP (90h), except for subcodes DCh and DEh, where the second byte is a register count (01h-08h) this vector is modified but not restored by Direct Access v4.0, and may be left dangling by other programs written with the same version of compiled BASIC SeeAlso: INT 3D Subcode Function DCh load 8086 stack with 8087 registers; overwrites the 10*N bytes at the top of the stack prior to the INT 3E with the 8087 register contents DEh load 8087 registers from top of 8086 stack; ST0 is furthest from top of 8086 stack E0h round TOS and R1 to single precision, compare, pop twice returns AX=8087 status word, FLAGS=8087 condition bits E2h round TOS and R1 to double precision, compare, pop twice returns AX=8087 status word, FLAGS=8087 condition bits Note: buggy in TPas5.5, because it sets the 8087 precision control field to the undocumented value 01h; this results in actually rounding to single precision E4h compare TOS/R1 with two POP's returns FLAGS=8087 condition bits E6h compare TOS/R1 with POP returns FLAGS=8087 condition bits E8h FTST (check TOS value) returns FLAGS=8087 condition bits EAh FXAM (check TOS value) returns AX=8087 status word ECh sine(ST0) EEh cosine(ST0) F0h tangent(ST0) F2h arctangent(ST0) F4h ST0 = ln(ST0) F6h ST0 = log2(ST0) F8h ST0 = log10(ST0) FAh ST0 = e**ST0 FCh ST0 = 2**ST0 FEh ST0 = 10**ST0 --------r-3F--------------------------------- INT 3F - Overlay manager interrupt (Microsoft LINK.EXE, Borland TLINK VROOMM) Notes: INT 3F is the default, and may be overridden while linking this vector is modified but not restored by Direct Access v4.0, and may be left dangling by other programs written with the same version of compiled BASIC SeeAlso: INT FE"OVERLAY" --------r-3F--------------------------------- INT 3F - Microsoft Dynamic Link Library manager SeeAlso: INT 21/AH=4Bh --------B-40--------------------------------- INT 40 - DISKETTE - ROM BIOS DISKETTE HANDLER RELOCATED BY HARD DISK BIOS SeeAlso: INT 13,INT 63 --------h-40--------------------------------- INT 40 - Z100 - Master 8259 - Parity error or S100 error SeeAlso: INT 41"Z100",INT FF"Z100" --------O-40--------------------------------- INT 40 - Acorn BBC Master 512 - "OSFIND" - OPEN FILE AL = operation 00h close file 40h open file for reading 80h open file for writing C0h open file for random access DS:BX -> CR-terminated filename Return: AL = file handle (00h if file closed or could not be opened) Note: the Acorn BBC Master 512 is an 80186-based add-on board for the 6502-based Master 128 which uses the original CPU as an I/O processor SeeAlso: INT 41"Acorn",INT 42"Acorn",INT 43"Acorn",INT 44"Acorn",INT 4C"Acorn" --------B-41--------------------------------- INT 41 - SYSTEM DATA - HARD DISK 0 PARAMETER TABLE Note: the default parameter table array is located at F000h:E401h in 100% compatible BIOSes; the pointer may be overridden by the hard disk controller's BIOS to support drive formats unknown to the ROM BIOS SeeAlso: INT 13/AH=09h,INT 1E,INT 46 Format of fixed disk parameters: Offset Size Description 00h WORD number of cylinders 02h BYTE number of heads 03h WORD starting reduced write current cylinder (XT only, 0 for others) 05h WORD starting write precompensation cylinder number 07h BYTE maximum ECC burst length (XT only) 08h BYTE control byte bits 0-2: drive option (XT only, 0 for others) bit 3: set if more than 8 heads (AT and later only) bit 4: always 0 bit 5: set if manufacturer's defect map on max cylinder+1 (AT and later only) bit 6: disable ECC retries bit 7: disable access retries 09h BYTE standard timeout (XT only, 0 for others) 0Ah BYTE formatting timeout (XT only, 0 for others) 0Bh BYTE timeout for checking drive (XT only, 0 for others) 0Ch WORD cylinder number of landing zone (AT and later only) 0Eh BYTE number of sectors per track (AT and later only) 0Fh BYTE reserved --------h-41--------------------------------- INT 41 - Z100 - Master 8259 - Processor Swap SeeAlso: INT 40"Z100",INT 42"Z100" --------O-41--------------------------------- INT 41 - Acorn BBC Master 512 - "OSGBPB" - MULTI-BYTE GET/PUT AL = function 01h put bytes sequentially 02h put bytes, ignoring sequential pointer 03h get bytes sequentially 04h get bytes, ignoring sequential pointer 05h get media title and boot option 06h get current device and directory 07h get current library and device 08h search directory DS:BX -> control block (see below) Return: CF clear if successful CF set on error AL = 00h if operation attempted AL unchanged if unsupported function SeeAlso: INT 40"Acorn",INT 42"Acorn",INT 43"Acorn" Format of control block: Offset Size Description 00h BYTE file handle 01h DWORD pointer to data in either I/O processor or Tube processor 05h DWORD number of bytes to be transferred 09h DWORD transfer address --------G-4112------------------------------- INT 41 P - MS Windows debugging kernel - "OutputDebugString" AH = 12h ??? Return: ??? SeeAlso: AH=50h --------G-4150------------------------------- INT 41 P - MS Windows debugging kernel - "DefineDebugSegment" AH = 50h ??? Return: ??? SeeAlso: AH=12h --------V-42--------------------------------- INT 42 - VIDEO - RELOCATED DEFAULT INT 10 VIDEO SERVICES (EGA,VGA) SeeAlso: INT 10 Note: not used by PS/2 built-in VGA or XGA --------h-42--------------------------------- INT 42 - Z100 - Master 8259 - Timer SeeAlso: INT 41"Z100",INT 43"Z100" --------O-42--------------------------------- INT 42 - Acorn BBS Master 512 - "OSBPUT" - WRITE SINGLE BYTE TO FILE AL = byte to be written BH = file handle Return: flags destroyed SeeAlso: INT 40"Acorn",INT 41"Acorn",INT 43"Acorn",INT 47"Acorn",INT 49"Acorn" --------V-43--------------------------------- INT 43 - VIDEO DATA - CHARACTER TABLE (EGA,MCGA,VGA) points at graphics data for characters 00h-7Fh of the current font SeeAlso: INT 1F,INT 44"VIDEO" --------h-43--------------------------------- INT 43 - Z100 - Master 8259 - Slave 8259 input Note: slave runs in special fully nested mode SeeAlso: INT 42"Z100",INT 44"Z100" --------O-43--------------------------------- INT 43 - Acorn BBC Master 512 - "OSBGET" - READ SINGLE BYTE FROM FILE BH = file handle Return: CF clear if successful AL = byte read from file CF set on error SeeAlso: INT 40"Acorn",INT 41"Acorn",INT 42"Acorn",INT 46"Acorn" --------V-44--------------------------------- INT 44 - VIDEO DATA - ROM BIOS CHARACTER FONT, CHARACTERS 00h-7Fh (PCjr) points at graphics data for current character font SeeAlso: INT 1F,INT 43"VIDEO" --------N-44--------------------------------- INT 44 - Novell NetWare - HIGH-LEVEL LANGUAGE API --------I-44--------------------------------- INT 44 - IBM 3270-PC High Level Language API DS:SI -> parameter control block --------h-44--------------------------------- INT 44 - Z100 - Master 8259 - Serial A SeeAlso: INT 43"Z100",INT 45"Z100" --------O-4400------------------------------- INT 44 - Acorn BBC Master 512 - "OSARGS" - GET/SET FILE PARAMS FOR OPEN FILE AH = 00h AL = function 00h get current filing system Return: AL = filing system (see below) 01h get address of commandline tail Return: BX buffer filled with address of command tail in I/O processor address space (use INT 4A/AL=05h to retrieve) FFh flush all files onto secondary storage AH = file handle AL = function 00h get sequential pointer for file 01h set sequential pointer for file 02h get length of file BX -> 4-byte data buffer Return: BX buffer updated if appropriate Note: the commandline tail is terminated with a carriage return (0Dh) SeeAlso: INT 40"Acorn",INT 41"Acorn",INT 45"Acorn",INT 4A"Acorn" Values for filing system: 00h none 01h 1200 bps cassette 02h 300 bps cassette 03h ROM FS 04h DFS 05h ANFS/NFS 06h TFS 08h ADFS --------h-45--------------------------------- INT 45 - Z100 - Master 8259 - Serial B SeeAlso: INT 44"Z100",INT 46"Z100" --------O-45--------------------------------- INT 45 - Acorn BBC Master 512 - "OSFILE" - READ/WRITE FILE OR DIRECTORY INFO AL = function 00h save block of memory as file 01h update directory entry for existing file 02h set load address for existing file 03h set execution address for existing file 04h set attributes for existing file 05h read directory 06h delete file FFh load file DS:BX -> control block (see below) Return: FLAGS destroyed AL = file type 00h not found 01h file found 02h directory found FFh protected file SeeAlso: INT 40"Acorn",INT 41"Acorn",INT 44"Acorn",INT 46"Acorn" Format of control block: Offset Size Description 00h WORD address of CR-terminated filename 02h DWORD load address of file 06h DWORD execution address of file 0Ah DWORD start address of data to save 0Eh DWORD end address of data to save, or file attributes file attributes in low byte: bit 0: no owner read access bit 1: no owner write access bit 2: not executable by owner bit 3: not deletable by owner bit 4: no public read access bit 5: no public write access bit 6: not executable with public access bit 7: not deletable with public access other three bytes are filing-system specific file attributes --------B-46--------------------------------- INT 46 - SYSTEM DATA - HARD DISK 1 DRIVE PARAMETER TABLE SeeAlso: INT 13/AH=09h,INT 41 --------h-46--------------------------------- INT 46 - Z100 - Master 8259 - Keyboard, Retrace, and Light Pen SeeAlso: INT 45"Z100",INT 47"Z100" --------O-46--------------------------------- INT 46 - Acorn BBC Master 512 - "OSRDCH" - GET CHARACTER FROM CUR INPUT STREAM Return: CF clear if successful AL = character read CF set on error AL = error code SeeAlso: INT 40"Acorn",INT 43"Acorn",INT 47"Acorn",INT 49"Acorn" --------h-47--------------------------------- INT 47 - Z100 - Master 8259 - Printer SeeAlso: INT 46"Z100",INT 48"Z100" --------O-47--------------------------------- INT 47 - Acorn BBC Master 512 - "OSWRCH" - WRITE CHARACTER TO CUR OUTPUT STREAM AL = character to be written Return: FLAGS destroyed SeeAlso: INT 40"Acorn",INT 46"Acorn",INT 49"Acorn" ----------478000----------------------------- INT 47 - SQL Base - DATABASE ENGINE API AX = 8000h DS:BX -> parameter block, first word is function number Program: SQL Base is a network-oriented database engine by Gupta Technologies SeeAlso: AX=8001h Values for function number: 01h "SQLFINI" initalialize application's use of the database 02h "SQLFDON" application is done using the database 03h "SQLFCON" connect to a cursor/database 04h "SQLFDIS" disconnect from a cursor/database 05h "SQLFCOM" compile a SQL command 06h "SQLFEXE" execute a SQL command 07h "SQLFCEX" compile and execute a SQL command 08h "SQLFCMT" commit a transaction to the database 09h "SQLFDES" describe the items of a SELECT statement 0Ah "SQLFGFI" get fetch information 0Bh "SQLFFBK" fetch previous result row from SELECT statement 0Ch "SQLFFET" fetch next result row from SELECT statement 0Dh "SQLFEFB" enable fetch backwards 0Eh "SQLFPRS" position in result set 0Fh "SQLFURS" undo result set 10h "SQLFNBV" get number of bind variables 11h "SQLFBND" bind data variables 12h "SQLFBNN" bind numerics 13h "SQLFBLN" bind long number 14h "SQLFBLD" bind long data variables 15h "SQLFSRS" start restriction set processing 16h "SQLFRRS" restart restriction set processing 17h "SQLFCRS" close restriction set 18h "SQLFDRS" drop restriction set 19h "SQLFARF" apply Roll Forward journal 1Ah "SQLFERF" end Roll Forward journal 1Bh "SQLFSRF" start Roll Forward journal 1Ch "SQLFSTO" store a compiled SQL command 1Dh "SQLFRET" retrieve a compiled SQL command 1Eh "SQLFDST" drop a stored command 1Fh "SQLFCTY" get command type 20h "SQLFEPO" get error position 21h "SQLFGNR" get number of rows 22h "SQLFNSI" get number of select items 23h "SQLFRBF" get Roll Back flag 24h "SQLFRCD" get return code 25h "SQLFROW" get number of ROWs 26h "SQLFSCN" set cursor name 27h "SQLFSIL" set isolation level 28h "SQLFSLP" set log parameters 29h "SQLFSSB" set select buffer 2Ah "SQLFSSS" set sort space 2Bh "SQLFRLO" read long 2Ch "SQLFWLO" write long 2Dh "SQLFLSK" long seek 2Eh "SQLFGLS" get long size 2Fh "SQLFELO" end long operation 30h "SQLFRBK" roll back a transaction from the database 31h "SQLFERR" error message 32h "SQLFCPY" copy 33h "SQLFR01" reserved 34h "SQLFSYS" system 35h "SQLFSTA" statistics 36h "SQLFR02" reserved 37h "SQLFXAD" extra add 38h "SQLFXCN" extra character to number 39h "SQLFXDA" extra date add 3Ah "SQLFXDP" extra date picture 3Bh "SQLFXDV" extra divide 3Ch "SQLFXML" extra multiply 3Dh "SQLFXNP" extra number picture 3Eh "SQLFXPD" extra picture date 3Fh "SQLFXSB" extra subtract 40h "SQLFINS" install database 41h "SQLFDIN" deinstall database 42h "SQLFDIR" directory of databases 43h "SQLFTIO" timeout 44h "SQLFFQN" get fully qualified column name 45h "SQLFEXP" explain execution plan 46h "SQLFFER" get full error 47h "SQLFBKP" begin online backup 48h "SQLFRDC" read backup data chunk 49h "SQLFEBK" end backup 4Ah "SQLFRES" begin restore from backup 4Bh "SQLFWDC" write backup data chunk for restore 4Ch "SQLFRRD" recover restored database to consistent state 4Dh "SQLFERS" end restore 4Eh "SQLFNRR" return number of result set rows 4Fh "SQLFSTR" start restriction mode 50h "SQLFSPR" stop restriction mode 51h "SQLFCNC" connect 2 52h "SQLFCNR" connect with no recovery 53h "SQLFOMS" set output message size 54h "SQLFIMS" set input message size 55h "SQLFSCP" set cache pages 56h "SQLFDSC" describe items of a SELECT statement (external) 57h "SQLFLAB" get label info for items in SELECT statement 58h "SQLFCBV" clear bind variables 59h "SQLFGET" get database information 5Ah "SQLFSET" set database information 5Bh "SQLFTEC" translate error code ----------478001----------------------------- INT 47 - SQL Base - GET VERSION NUMBER AX = 8001h Return: ??? Program: SQL Base is a network-oriented database engine by Gupta Technologies SeeAlso: AX=8000h --------B-48--------------------------------- INT 48 - KEYBOARD - CORDLESS KEYBOARD TRANSLATION (PCjr) SeeAlso: INT 49"PCjr" --------h-48--------------------------------- INT 48 - Z100 - Slave 8259 - S100 vectored line 0 SeeAlso: INT 47"Z100",INT 49"Z100" --------N-48--------------------------------- INT 48 - Watstar PC Network data pointer 1 SeeAlso: INT 49"Watstar" --------O-48--------------------------------- INT 48 - Acorn BBC Master 512 - "OSNEWL" - SEND NEWLINE TO OUTPUT STREAM Return: FLAGS destroyed Note: writes a carriage return (0Dh) followed by a linefeed (0Ah) SeeAlso: INT 40"Acorn",INT 47"Acorn",INT 49"Acorn" --------B-49--------------------------------- INT 49 - SYSTEM DATA - NON-KEYBOARD SCAN-CODE TRANSLATION TABLE (PCjr) SeeAlso: INT 48"PCjr" Format of translation table: Offset Size Description 00h BYTE number of nonkeyboard scancodes in the table 01h N WORDs high byte 00h (NUL) byte scancode with low order byte representing the scancode mapped values relative to their input values within the range of 56h through 7Eh --------h-49--------------------------------- INT 49 - Z100 - Slave 8259 - S100 vectored line 1 SeeAlso: INT 48"Z100",INT 4A"Z100" ----------49--------------------------------- INT 49 - Texas Instruments PC - VIDEO I/O??? apparently provides direct video display on the TI Professional PC --------N-49--------------------------------- INT 49 - Watstar PC Network data pointer 2 SeeAlso: INT 49"Watstar" --------O-49--------------------------------- INT 49 - Acorn BBC Master 512 - "OSASCI" - WRITE CHARACTER TO CUR OUTPUT STREAM AL = character to be written Return: FLAGS destroyed Note: converts carriage return (0Dh) into CRLF sequence (0Dh 0Ah) SeeAlso: INT 40"Acorn",INT 46"Acorn",INT 47"Acorn",INT 48"Acorn" --------a-490001----------------------------- INT 49 - MAGic v1.16+ - TURN ON MAGNIFICATION AX = 0001h Return: AX = status 0000h cannot magnify current video mode 0002h magnified (text mode) 0003h magnified (graphics mode) FFFDh function works only in magnified mode FFFFh MAGic busy, retry later BX,CX,DX destroyed Program: MAGic (MAGnification In Color) is a TSR by Microsystems Software, Inc. providing 2x2 text and graphics magnification on VGA, XGA, and SVGA Note: INT 49 is the default, but may be overridden on the commandline. The actual interrupt in use may be found by searching for the signature "MAGic" or "xMAGic" (for the deluxe version) immediately preceding the interrupt handler (this is also the installation check). MAGic uses CodeRunneR, which places the signature "RT" at offset 0000h in the interrupt handler's segment, followed by MAGic's TSR ID of "VMAG". SeeAlso: AX=0001h,AX=0003h,AX=0004h,AX=0008h Index: installation check;MAGic --------a-490002----------------------------- INT 49 - MAGic v1.16+ - TURN OFF MAGNIFICATION AX = 0002h Return: AX = status (see AX=0001h) BX,CX,DX destroyed SeeAlso: AX=0001h --------a-490003----------------------------- INT 49 - MAGic v1.16+ - SHIFT MAGNIFIED WINDOW TO INCLUDE SPECIFIED LOCATION AX = 0003h BX = vertical position (character row [text] or pixel row [graphics]) DX = horizontal position (char column [text] or 8-pixel units [gr]) Return: AX = status 0000h successful FFFFh MAGic busy, retry later BX,CX,DX destroyed Note: window is not moved if the position is inside the current window SeeAlso: AX=0001h,AX=0004h,AX=0005h --------a-490004----------------------------- INT 49 - MAGic v1.16+ - REPOSITION MAGNIFIED WINDOW AX = 0004h BX = vertical position of upper left corner DX = horizontal position Return: AX = status (see AX=0003h) BX,CX,DX destroyed SeeAlso: AX=0001h,AX=0003h,AX=0005h --------a-490005----------------------------- INT 49 - MAGic v1.16+ - GET POSITION OF MAGNIFIED WINDOW AX = 0005h Return: AX = status 0000h successful BX = vertical position (char row or pixel row) DX = horizontal position (char column or 8-pixel units) FFFFh MAGic busy, retry later BX,DX destroyed CX destroyed SeeAlso: AX=0001h,AX=0003h,AX=0004h,AX=0006h,AX=0007h --------a-490006----------------------------- INT 49 - MAGic v1.16+ - GET SIZE OF FULL SCREEN AX = 0006h Return: AX = status 0000h successful BX = vertical size (char rows or pixel rows) DX = horizontal size (char cols or 8-pixel units) FFFFh MAGic busy, retry later BX,DX destroyed CX destroyed SeeAlso: AX=0001h,AX=0005h,AX=0007h --------a-490007----------------------------- INT 49 - MAGic v1.16+ - GET SIZE OF MAGNIFICATION WINDOW AX = 0007h Return: AX = status 0000h successful BX = vertical size (char rows or pixel rows) DX = horizontal size (char cols or 8-pixel units) FFFEh invalid function FFFFh MAGic busy, retry later BX,DX destroyed CX destroyed BUG: in v1.16 and v1.17, this function is not recognized as valid, but AX=0000h is accepted and will branch into hyperspace SeeAlso: AX=0001h,AX=0006h --------a-490008----------------------------- INT 49 - MAGic v1.23+ - SET TEXT MODE MAGNIFICATION SIZE AX = 0008h BX = scaling factor (01h=1.4 times, 02h, 04h, 06h, 08h, 09h=12 times) Return: AX = status 0000h successful FFFBh scaling factor only available in MAGic Deluxe FFFCh already in magnified state, can't set size Notes: this call specifies the amount a subsequent call to AX=0001h should magnify the display scaling factors greater than 2 are only available in MAGic Deluxe SeeAlso: AX=0001h --------B-4A--------------------------------- INT 4A C - SYSTEM - USER ALARM HANDLER Desc: This interrupt is invoked by the BIOS when a real-time clock alarm occurs; an application may use it to perform an action at a predetermined time. Note: this interrupt is called from within a hardware interrupt handler, so all usual precautions against reentering DOS must be taken SeeAlso: INT 1A/AH=06h --------h-4A--------------------------------- INT 4A - Z100 - Slave 8259 - S100 vectored line 2 SeeAlso: INT 49"Z100",INT 4B"Z100" --------O-4A--------------------------------- INT 4A - Acorn BBC Master 512 - "OSWORD" - MISC FUNCTIONS USING CONTROL BLOCK AL = function code FAh transfer data between 80186 and 65C12 I/O processor DS:BX -> control block (see below) Return: FLAGS destroyed control block updated Note: there are more functions than are listed here, but details are not available SeeAlso: INT 40"Acorn",INT 4B"Acorn",INT 4C"Acorn" Format of control block for function FAh: Offset Size Description 00h BYTE number of parameters sent to I/O processor (0Dh,0Eh) 01h BYTE number of parameters read from I/O processor (01h) 02h DWORD I/O processor address 06h DWORD 80186 segment:offset address 0Ah WORD number of bytes to transfer 0Ch BYTE operation type 00h write to 65C12 at 24 us/byte 01h read from 65C12 at 24 us/byte 02h write to 65C12 at 26 us/word 03h read from 65C12 at 26 us/word 04h write to 65C12 at 10 us/byte using 256-byte blocks 05h read from 65C12 at 10 us/byte using 256-byte blocks 0Dh BYTE 65C12 memory access control (only used if offset 00h = 0Eh) bit 7: unused bit 6: always use main screen memory if I/O addr 3000h-7FFFh (overrides bit 5) bit 5: use shadow screen memory if screen address specified bit 4: use current ROM rather than ROM selected by bits 3-0 (only if I/O address between 8000h and BFFFh) bits 3-0: paged ROM number --------h-4B--------------------------------- INT 4B - Z100 - Slave 8259 - S100 vectored line 3 SeeAlso: INT 4A"Z100",INT 4C"Z100" --------d-4B--------------------------------- INT 4B - Common Access Method SCSI interface (draft revision 1.9) ES:DI -> CAM Control Block (see INT 4F/AX=8100h) Notes: the CAM committee moved the interface to INT 4F after revision 1.9 to avoid conflicting with the IBM SCSI interface and the Virtual DMA specification the installation check for the driver is the string "SCSI_CAM" eight bytes past the INT 4Bh handler it is not known whether any drivers actually implemented this interface on INT 4B instead of INT 4F SeeAlso: INT 4F/AX=8100h Index: installation check;Common Access Method SCSI interface --------O-4B--------------------------------- INT 4B - Acorn BBC Master 512 - "OSBYTE" - MISC FUNCTIONS USING REGISTER PARAMS AL = function code BL = first parameter BH = second parameter (if needed) Return: BL = first return parameter BH = second return parameter CF depends on function SeeAlso: INT 40"Acorn",INT 4A"Acorn",INT 4C"Acorn" --------d-4B80------------------------------- INT 4B - IBM SCSI interface AH = 80h details not yet available --------d-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) bit 1: physical buffer/remap region in first megabyte bit 2: automatic remap enabled bit 3: all memory is physically contiguous bits 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 Index: installation check;Virtual DMA Spec Values for error code: 01h region not in contiguous memory 02h region crossed a physical alignment boundary 03h unable to lock pages 04h no buffer available 05h region too large for buffer 06h buffer currently in use 07h invalid memory region 08h region was not locked 09h number of physical pages greater than table length 0Ah invalid buffer ID 0Bh copy out of buffer range 0Ch invalid DMA channel number 0Dh disable count overflow 0Eh disable count underflow 0Fh function not supported 10h reserved flag bits set in DX Format of DMA descriptor structure (DDS): Offset Size Description 00h DWORD region size 04h DWORD offset 08h WORD segment/selector 0Ah WORD buffer ID 0Ch DWORD physical address Format of Extended DMA descriptor structure (EDDS): Offset Size Description 00h DWORD region size 04h DWORD offset 08h WORD segment/selector 0Ah WORD reserved 0Ch WORD number available 0Eh WORD number used 10h DWORD region 0 physical address 14h DWORD region 0 size in bytes 18h DWORD region 1 physical address 1Ch DWORD region 1 size in bytes ... Format of Extended DMA descriptor structure (EDDS) with page table entries: Offset Size Description 00h DWORD region size 04h DWORD offset 08h WORD segment/selector 0Ah WORD reserved 0Ch WORD number available 0Eh WORD number used 10h DWORD page table entry 0 (same as 80386 page table entry) 14h DWORD page table entry 1 ... Note: bits 1-11 of the page table entries should be zero; bit 0 set if page is present and locked --------d-4B8103----------------------------- INT 4B - Virtual DMA Specification - LOCK DMA REGION AX = 8103h DX = flags bit 0: reserved (zero) bit 1: data should be copied into buffer (ignored if bit 2 set) bit 2: buffer should not be allocated if region noncontiguous or crosses physical alignment boundary specified by bits 4-5 bit 3: don't attempt automatic remap bit 4: region must not cross 64K physical alignment boundary bit 5: region must not cross 128K physical alignment boundary 6-15: reserved (zero) ES:DI -> DMA descriptor structure (see AX=8102h) Return: CF clear if successful DDS physical address field filled in DDS buffer ID field filled (0000h if no buffer allocated) CF set on error AL = error code (see AX=8102h) DDS region size field filled wth maximum contiguous length in bytes BUGS: Windows 3.0 does not correctly support automatic remapping or copying in enhanced mode Windows 3.0 in enhanced mode does not return a correct code on error SeeAlso: AX=8104h,AX=8105h --------d-4B8104----------------------------- INT 4B - Virtual DMA Specification - UNLOCK DMA REGION AX = 8104h DX = flags bit 0: reserved (zero) bit 1: data should be copied out of buffer bits 2-15 reserved (zero) ES:DI -> DMA descriptor structure (see AX=8102h) with region size, physical address, and buffer ID fields set Return: CF clear if successful DDS physical address field set DDS buffer ID field set (0000h if no buffer allocated) CF set on error AL = error code (see AX=8102h) DDS region size field filled wth maximum contiguous length in bytes Note: Windows 3.0 does not check whether the region extends beyond the end of a segment BUG: Windows 3.0 in enhanced mode does not return a correct code on error SeeAlso: AX=8103h,AX=8106h --------d-4B8105----------------------------- INT 4B - Virtual DMA Specification - SCATTER/GATHER LOCK REGION AX = 8105h DX = flags bits 0-5 reserved (zero) bit 6: EDDS should be returned with page table entries bit 7: only present pages should be locked (not-present pages receive entry of 0000h) bits 8-15 reserved (zero) ES:DI -> Extended DMA descriptor structure (see AX=8102h) region size, linear segment, linear offset, and number avail fields set Return: CF clear if successful EDDS number used field set if DX bit 6 set, lower 12 bits of BX = offset in first page CF set on error AL = error code (see AX=8102h) EDDS region size field filled with max length in bytes that can be locked and described in the EDDS table BUG: Windows 3.0 in enhanced mode may return zero instead of the physical page address for pages which were originally not present SeeAlso: AX=8103h,AX=8106h --------d-4B8106----------------------------- INT 4B - Virtual DMA Specification - SCATTER/GATHER UNLOCK REGION AX = 8106h DX = flags bits 0-5 reserved (zero) bit 6: EDDS contains page table entries bit 7: EDDS may contain not-present pages (entry = 0000h) bits 8-15 reserved (zero) ES:DI -> Extended DMA descriptor structure (see AX=8102h) returned by AX=8105h Return: CF clear if successful CF set on error AL = error code (see AX=8102h) Note: according to the Microsoft version of the VDS specification, the actual scatter/gather list is ignored, while according to the IBM version of the specification, "the result of a LOCK operation" must be provided to this function SeeAlso: AX=8104h,AX=8105h --------d-4B8107----------------------------- INT 4B - Virtual DMA Specification - REQUEST DMA BUFFER AX = 8107h DX = flags bit 0: reserved (zero) bit 1: data should be copied into buffer bits 2-15 reserved (zero) ES:DI -> DMA descriptor structure (see AX=8102h) with region size set (also region offset and region segment if DX bit 1 set) Return: CF clear if successful DDS physical address and buffer ID set DDS region size filled with length of buffer CF set on error AL = error code (see AX=8102h) SeeAlso: AX=8108h --------d-4B8108----------------------------- INT 4B - Virtual DMA Specification - RELEASE DMA BUFFFER AX = 8108h DX = flags bit 0: reserved (zero) bit 1: data should be copied out of buffer bits 2-15 reserved (zero) ES:DI -> DMA descriptor structure (see AX=8102h) with buffer ID set (also region size/region offset/segment if DX bit 1 set) Return: CF clear if successful CF set on error AL = error code (see AX=8102h) BUG: under Windows 3.0 Enhanced mode, you must specify that data be copied for this function to work correctly SeeAlso: AX=8107h --------d-4B8109DX0000----------------------- INT 4B - Virtual DMA Specification - COPY INTO DMA BUFFER AX = 8109h DX = 0000h ES:DI -> DMA descriptor structure (see AX=8102h) with buffer ID, region segment/offset, and region size fields set BX:CX = starting offset into DMA buffer Return: CF clear if successful CF set on error AL = error code (see AX=8102h) BUG: Windows 3.0 Enhanced mode does not correctly interpret the copy count SeeAlso: AX=810Ah --------d-4B810ADX0000----------------------- INT 4B - Virtual DMA Specification - COPY OUT OF DMA BUFFER AX = 810Ah DX = 0000h ES:DI -> DMA descriptor structure (see AX=8102h) with buffer ID, region segment/offset, and region size fields set BX:CX = starting offset into DMA buffer Return: CF clear if successful CF set on error AL = error code (see AX=8102h) BUG: Windows 3.0 Enhanced mode does not correctly interpret the copy count SeeAlso: AX=8109h --------d-4B810B----------------------------- INT 4B - Virtual DMA Specification - DISABLE DMA TRANSLATION AX = 810Bh BX = DMA channel number DX = 0000h Return: CF clear if successful CF set on error AL = error code (see AX=8102h) SeeAlso: AX=810Ch --------d-4B810C----------------------------- INT 4B - Virtual DMA Specification - ENABLE DMA TRANSLATION AX = 810Ch BX = DMA channel number DX = 0000h Return: CF clear if successful ZF set if disable count decremented to zero CF set on error AL = error code (see AX=8102h) SeeAlso: AX=810Bh --------Q-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 --------h-4C--------------------------------- INT 4C - Z100 - Slave 8259 - S100 vectored line 4 SeeAlso: INT 4B"Z100",INT 4D"Z100" --------O-4C--------------------------------- INT 4C - Acorn BBC Master 512 - "OSCLI" - INTERPRET COMMAND LINE DS:BX -> CR-terminated command string Return: FLAGS destroyed SeeAlso: INT 40"Acorn",INT 4A"Acorn",INT 4B"Acorn" --------h-4D--------------------------------- INT 4D - Z100 - Slave 8259 - S100 vectored line 5 SeeAlso: INT 4C"Z100",INT 4E"Z100" --------d-4E--------------------------------- INT 4E - TI Professional PC - DISK I/O used instead of INT 13 on the TI Professional PC SeeAlso: INT 13 --------h-4E--------------------------------- INT 4E - Z100 - Slave 8259 - S100 vectored line 6 SeeAlso: INT 4D"Z100",INT 4F"Z100" --------h-4F--------------------------------- INT 4F - Z100 - Slave 8259 - S100 vectored line 7 SeeAlso: INT 4E"Z100" --------d-4F8100----------------------------- INT 4F - Common Access Method SCSI interface rev 2.3 - SEND CCB TO XPT/SIM AX = 8100h ES:BX -> CAM Control Block (CCB) (see below) Return: AH = status 00h successful 01h invalid CCB address (0000h:0000h) Note: the SCSI Interface Module (SIM) may complete the requested function and invoke the completion callback function before this call returns SeeAlso: AX=8200h,INT 2F/AX=7F01h,INT 4B"Common Access Method" Values for CAM function code: 00h NOP 01h execute SCSI I/O 02h get device type 03h path inquiry 04h release SIM queue 05h set async callback 06h set device type 07h-0Fh reserved 10h abort SCSI command 11h reset SCSI bus 12h reset SCSI device 13h terminate I/O process 14h-1Fh reserved 20h engine inquiry 21h execute engine request 22h-2Fh reserved 30h enable logical unit number 31h execute target I/O 32h-7Fh reserved 80h-FFh vendor-specific functions Format of CAM Control Block: Offset Size Description 00h DWORD physical address of this CCB 04h WORD CAM control block length 06h BYTE function code (see above) 07h BYTE CAM status (see below) 08h BYTE SCSI status 09h BYTE path ID (FFh = XPT) 0Ah BYTE target ID 0Bh BYTE logical unit number 0Ch BYTE CAM flags bits 7-6: direction 00 reserved 01 in 10 out 11 no data transfer bit 5: disable autosense bit 4: scatter/gather bit 3: disable callback on completion bit 2: linked CDB bit 1: tagged queue action enable bit 0: CDB is a pointer 0Dh BYTE CAM flags bit 7: disable disconnect bit 6: initiate synchronous transfers \ mutually bit 5: disable synchronous transfers / exclusive bit 4: SIM queue priority 1 head insertion 0 tail insertion (normal) bit 3: SIM queue freeze bit 2: engine synchronize bits 1-0: reserved 0Eh BYTE CAM address flags bit 7: SG list/data (0 = host, 1 = engine) bit 6: CDB pointer (bits 6-1: 0=virtual addr, 1=phys addr) bit 5: SG list/data bit 4: sense buffer bit 3: message buffer bit 2: next CCB bit 1: callback on completion bit 0: reserved 0Fh BYTE target-mode flags (see below) ---function 02h--- 10h DWORD pointer to 36-byte buffer for inquiry data or 0000h:0000h 14h BYTE peripheral device type of target logical unit number ---function 03h--- 10h BYTE version number (00h-07h prior to rev 1.7, 08h = rev 1.7, 09h-FFh = rev no, i.e. 23h = rev 2.3) 11h BYTE SCSI capabilities (see below) 12h BYTE target mode support bit 7: processor mode bit 6: phase-cognizant mode bit 5-0: reserved 13h BYTE miscellaneous flags bit 7: scanned high to low instead of low to high bit 6: removables not included in scan bit 5: inquiry data not kept by XPT bits 4-0: reserved 14h WORD engine count 16h 14 BYTEs vendor-specific data 24h DWORD size of private data area 28h DWORD asynchronous event capabilities (see below) 2Ch BYTE highest path ID assigned 2Dh BYTE SCSI device ID of initiator 2Eh 2 BYTEs reserved 30h 16 BYTEs SIM vendor ID 40h 16 BYTEs HBA (host bus adaptor) vendor ID 50h 4 BYTEs operating-system dependant usage ---functions 00h,04h,11h,12h--- no additional fields ---function 05h--- 10h DWORD asynchronous event enables (see function 03h above) 14h DWORD pointer to asynchronous callback routine 18h DWORD pointer to peripheral driver buffer 1Ch BYTE size of peripheral buffer ---function 06h--- 10h BYTE peripheral device type of target ---functions 10h,13h--- 10h DWORD pointer to CCB to be aborted ---function 20h--- 10h WORD engine number 12h BYTE engine type 00h buffer memory 01h lossless compression 02h lossy compression 03h encryption 13h BYTE engine algorithm ID 00h vendor-unique 01h LZ1 variation 1 (STAC) 02h LZ2 variation 1 (HP DCZL) 03h LZ2 variation 2 (Infochip) 14h DWORD engine memory size ---function 21h--- 10h DWORD pointer to peripheral driver 14h 4 BYTEs reserved 18h DWORD OS-dependent request-mapping info 1Ch DWORD address of completion callback routine 20h DWORD pointer to scatter/gather list or data buffer 24h DWORD length of data transfer 28h DWORD pointer to engine buffer data 2Ch 2 BYTEs reserved 2Eh WORD number of scatter/gather entries 30h DWORD maximum destination data length 34h DWORD length of destination data 38h DWORD source residual length 3Ch 12 BYTEs reserved 48h DWORD OS-dependent timeout value 4Ch 4 BYTEs reserved 50h WORD engine number 52h WORD vendor-unique flags 54h 4 BYTEs reserved 58h N BYTEs private data area for SIM ---function 30h--- 10h WORD group 6 vendor-unique CDB length 12h WORD group 7 vendor-unique CDB length 14h DWORD pointer to target CCB list 18h WORD number of target CCBs ---other functions--- 10h DWORD pointer to peripheral driver 14h DWORD pointer to next CCB 18h DWORD OS-dependent request mapping information 1Ch DWORD address of completion callback routine 20h DWORD pointer to scatter/gather list or data buffer 24h DWORD length of data transfer 28h DWORD pointer to sense info buffer 2Ch BYTE length of sense info buffer 2Dh BYTE CDB length 2Eh WORD number of scatter/gather entries 30h 4 BYTEs reserved 34h BYTE SCSI status 35h 3 BYTEs reserved 38h DWORD residual length 40h 12 BYTEs Command Descriptor Block (CDB) 44h DWORD OS-dependent timeout value 48h DWORD pointer to message buffer 4Ch WORD length of message buffer 4Eh WORD vendor-unique flags 50h BYTE tag queue action 51h 3 BYTEs reserved 54h N BYTEs private data area for SIM Values for CAM status: 00h request in progress 01h request successful 02h host aborted request 03h unable to abort request 04h request completed with error 05h CAM is busy 06h invalid request 07h invalid path ID 08h no such SCSI device 09h unable to terminate I/O process 0Ah timeout on target selection 0Bh timeout on command 0Dh receive message rejection 0Eh sent/received SCSI bus reset 0Fh detected uncorrectable parity error 10h Autosense request failed 11h no HBA detected 12h data over/underrun 13h bus freed unexpectedly 14h target bus phase sequence failure 15h CCB too small 16h requested capability not available 17h sent bus device reset 18h terminate I/O process 38h invalid LUN 39h invalid target ID 3Ah unimplemented function 3Bh nexus not established 3Ch invalid initiator ID 3Dh received SCSI Command Descriptor Block 3Eh LUN already enabled 3Fh SCSI bus busy Note: bit 6 set to indicate frozen SIM queue bit 7 set to indicate valid autosense Bitfields for target-mode flags: bit 7 data buffer valid bit 6 status valid bit 5 message buffer valid bit 4 reserved bit 3 phase-cognizant mode bit 2 target CCB available bit 1 disable autodisconnect bit 0 disable autosave/restore Bitfields for SCSI capabilities: bit 7 modify data pointers bit 6 wide bus (32 bits) bit 5 wide bus (16 bits) bit 4 synchronous transfers bit 3 linked commands bit 2 reserved bit 1 tagged queueing bit 0 soft reset Bitfields for asynchronous event capabilities: bits 31-24 vendor-specific bits 23-8 reserved bit 7 new devices found during rescan bit 6 SIM module deregistered bit 5 SIM module registered bit 4 sent bus device reset to target bit 3 SCSI AEN bit 2 reserved bit 1 unsolicited reselection bit 0 unsolicited SCSI bus reset Completion callback function called with: interrupts disabled ES:BX -> completed CCB Asynchronous callback function called with: AH = opcode AL = path ID generating callback DH = target ID causing event DL = LUN causing event CX = data byte count (if applicable) ES:BX -> data buffer (if applicable) Return: all registers preserved --------d-4F8200CX8765----------------------- INT 4F - Common Access Method SCSI interface rev 2.3 - INSTALLATION CHECK AX = 8200h CX = 8765h DX = CBA9h Return: AH = 00h if installed CX = 9ABCh DX = 5678h ES:DI -> "SCSI_CAM" SeeAlso: AX=8100h,INT 4B"Common Access Method" ---------------------------------------------