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Assembly Source File | 1993-06-06 | 50.7 KB | 1,150 lines

;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Data Structures and Definitions ; ;...............................................................; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Real Time Dos Data Structure Definitions ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; ; ; Data Structure Definitions ; ; ; ; ; ; (c) Copyright 1990, 1992. Api Software and Mike Podanoffsky ; ; All Rights Reserved Worldwide. ; ; ; ; This product is protected under copyright laws and may not ; ; be reproduced in whole or in part, in any form or media, ; ; included but not limited to source listing, facimilie, data ; ; transmission, cd-rom, or floppy disk without the expressed ; ; written consent of the author. ; ; ; ; Licence for distribution in commercial use: ; ; ; ; Api Software ; ; 12 South Walker Street ; ; Lowell, MA 01851 ; ; 508/ 454-4961. ; ; ; ;...............................................................; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Default Configuration Parameters ; ;...............................................................; DEFAULT_FILES equ 8 ; MS DOS default is 8 DEFAULT_BUFFERS equ 10 ; MS DOS default is 2 DEFAULT_LASTDRIVE equ 'E' ; MS DOS default is e: DEFAULT_FCBOPENMODE equ 2 ; change only if you want read-only DEFAULT_MINENVIRONMENT equ 400 ; bytes default environment space ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Max Configuration Parameters Allowable ; ;...............................................................; CONFIGMAX_FILES equ 255 ; MS DOS default is 8 (value is max allowed) CONFIGMAX_BUFFERS equ 99 ; MS DOS default is 2 (value is max allowed) CONFIGMAX_FCBS_X equ 255 ; MS DOS default is 4 (value is max allowed) CONFIGMAX_FCBS_Y equ 255 ; MS DOS default is 0 (value is max allowed) CONFIGMIN_STACKS_X equ 8 ; MS DOS default is 9 CONFIGMAX_STACKS_X equ 64 CONFIGMIN_STACKS_Y equ 32 ; MS DOS default is 128 CONFIGMAX_STACKS_Y equ 512 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; DOS Functions ; ;...............................................................; ProgramTerminate equ 00h ; Program Terminate KeyboardInput equ 01h ; Keyboard Input DisplayOutput equ 02h ; Display Output AuxInput equ 03h ; Aux Input AuxOutput equ 04h ; Aux Output PrinterOutput equ 05h ; Printer Output DirectConsole equ 06h ; Direct Console DirectConsoleInputNoEcho equ 07h ; Direct Console Input NoEcho ConsoleInputNoEcho equ 08h ; Console Input NoEcho PrintString equ 09h ; Print String BufferedKeyboardInput equ 0Ah ; Buffered keyboard input GetLine equ BufferedKeyboardInput CheckKeyboardInput equ 0Bh ; Check keyboard input ClearBufferedKeyboardInput equ 0Ch ; Clear Buffered keyboard input DiskReset equ 0Dh ; Disk reset SelectDisk equ 0Eh ; Select disk OpenFileFCB equ 0Fh ; Open file FCB CloseFileFCB equ 10h ; Close file FCB SearchFirstFileFCB equ 11h ; Search first file FCB SearchNextFileFCB equ 12h ; Search next file FCB DeleteFileFCB equ 13h ; Delete file FCB SeqReadFileFCB equ 14h ; Seq read file FCB SeqWriteFileFCB equ 15h ; Seq write file FCB CreateFileFCB equ 16h ; Create file FCB RenameFileFCB equ 17h ; Rename file FCB CurrentDisk equ 19h ; Current disk SetDiskTransferAddress equ 1Ah ; Set disk transfer address SetDTA equ SetDiskTransferAddress GetDefaultDriveData equ 1Bh ; Get Default Drive Data GetDriveData equ 1Ch ; Get Drive Data GetDefaultDriveParameterBlock equ 1Fh ; Get Default Drive Parameter Block ReadFileFCB equ 21h ; Read file FCB WriteFileFCB equ 22h ; Write file FCB FileSizeFCB equ 23h ; File size FCB SetRelativeRecordFCB equ 24h ; Set relative record FCB SetIntVector equ 25h ; Set interrupt vector CreateNewProgramSeg equ 26h ; Create new program seg RandomBlockReadFCB equ 27h ; Random block read FCB RandomBlockWriteFCB equ 28h ; Random block write FCB ParseFilenameFCB equ 29h ; Parse filename FCB GetDate equ 2Ah ; Get date SetDate equ 2Bh ; Set date GetTime equ 2Ch ; Get time SetTime equ 2Dh ; Set time SetVerifySwitch equ 2Eh ; Set verify switch GetDiskTransferAddress equ 2Fh ; Get disk transfer address GetDTA equ GetDiskTransferAddress GetDOSVersion equ 30h ; Get DOS version TerminateStayResident equ 31h ; Terminate stay resident GetDriveParameterBlock equ 32h ; Undocumented (Get Drive Parameter Block) CtrlBreakCheck equ 33h ; Ctrl break check GetIntVector equ 35h ; Get interrupt vector GetFreeDiskSpace equ 36h ; Get free disk space GetSetSwitchChar equ 37h ; Get/set switch char CountryDependentInfo equ 38h ; Country dependent info CreateSubdirectory equ 39h ; Create subdirectory RemoveSubdirectory equ 3Ah ; Remove subdirectory ChangeSubdirectory equ 3Bh ; Change subdirectory CreateFile equ 3Ch ; Create file OpenFile equ 3Dh ; Open file CloseFile equ 3Eh ; Close file ReadFile equ 3Fh ; Read file WriteFile equ 40h ; Write file DeleteFile equ 41h ; Delete file MoveFilePointer equ 42h ; Move file pointer ChangeFileMode equ 43h ; Change file mode IoControl equ 44h ; Io Control DuplicateFileHandle equ 45h ; Duplicate file handle ForceFileHandle equ 46h ; Force file handle GetCurrentDirectory equ 47h ; Get current directory AllocateMemory equ 48h ; Allocate memory FreeAllocatedMemory equ 49h ; Free allocated memory ModifyAllocatedMemory equ 4Ah ; Modify allocated memory ExecuteProgram equ 4Bh ; ExecuteProgram TerminateProcess equ 4Ch ; Terminate process TerminateProgram equ TerminateProcess GetReturnCode equ 4Dh ; Get return code FindFirstFile equ 4Eh ; Find first file FindNextFile equ 4Fh ; Find next file SetPSPAddress equ 50h ; Set PSP Address GetPSPAddress equ 51h ; Get PSP Address GetDosDataTablePtr equ 52h ; Undocumented (Get DOS Data Table) GetVerify equ 54h ; Get verify RenameFile equ 56h ; Rename file SetFileDateTime equ 57h ; Set file date time GetExtendedError equ 59h ; Get extended error CreateUniqueFile equ 5Ah ; Create unique file CreateNewFile equ 5Bh ; Create new file LockFileAccess equ 5Ch ; Lock file access GetMachineName equ 5Eh ; Get machine name GetRedirectionList equ 5Fh ; Get redirection list GetActualFileName equ 60h ; Undocumented (Get Actual FileName) GetProgramSegmentPrefix equ 62h ; Get program segment prefix CapitalizeFunctions equ 65h ; Country Dependent Capitalization ) SetHandlesCount equ 67h ; CommitFile equ 68h ; GetDiskSerialNumber equ 69h ; ExtendedOpenCreate equ 6Ch ; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Network Redirector (2F11) Functions ; ;...............................................................; NFSInstallCheck equ 00h ; Install Check NFSRemoveDirectory equ 02h ; Remove Directory NFSMakeDirectory equ 04h ; Make Directory NFSChangeDirectory equ 05h ; Change Directory NFSCloseFile equ 06h ; Close File NFSCommitFile equ 07h ; Commit File NFSReadFile equ 08h ; Read File NFSWriteFile equ 09h ; Write File NFSLockRegion equ 0Ah ; Lock Region NFSUnlockRegion equ 0Bh ; Unlock Region NFSGetDiskSpace equ 0Ch ; Get Disk Space NFSSetFileAttributes equ 0Eh ; Set File Attributes NFSGetFileAttributes equ 0Fh ; Get File Attributes NFSRenameFile equ 11h ; Rename File NFSDeleteFile equ 13h ; Delete File NFSOpenFile equ 16h ; Open File NFSCreateFile equ 17h ; Create File NFSFindFirst equ 1Bh ; Find First NFSFindNext equ 1Ch ; Find Next NFSCloseAllFiles equ 1Dh ; Close All Files NFSSetRedirection equ 1Eh ; Set Redirection NFSPrinterSetup equ 1Fh ; Printer Setup NFSFlushBuffers equ 20h ; Flush Buffers NFSSeekFromEnd equ 21h ; Seek From End NFSTerminateProcess equ 22h ; Terminate Process NFSQualifyFilename equ 23h ; Qualify Filename NFSPrinterMode equ 25h ; Printer Mode ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Standard I/O Definitions ; ;...............................................................; STDIN equ 00 STDOUT equ 01 STDERR equ 02 STDAUX equ 03 STDPRN equ 04 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Seek Definitions ; ;...............................................................; SEEK_BEG equ 00 SEEK_CUR equ 01 SEEK_END equ 02 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Open Modes ; ;...............................................................; OPEN_ACCESS_READONLY equ 00h OPEN_ACCESS_WRITEONLY equ 01h OPEN_ACCESS_READWRITE equ 02h OPEN_SHARE_COMPATABILITY equ 00h OPEN_SHARE_DENYREADWRITE equ 10h OPEN_SHARE_DENYREAD equ 20h OPEN_SHARE_DENYWRITE equ 30h OPEN_SHARE_DENYNONE equ 40h OPEN_SHARE_NOINHERIT equ 80h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Control Check Definitions ; ;...............................................................; getControlC equ 00h ; Get ControlC Check Flag ; setControlC equ 01h ; Set ControlC Check Flag ; getStartupDrive equ 05h ; Get Startup Drive ; getExtDosVersion equ 06h ; Get DOS Version ; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Terminate Codes ; ;...............................................................; TERMINATE_NORMAL equ 00h ; process completed with a 4C TERMINATE_CONTROLC equ 01h ; process was cancelled TERMINATE_DEVICEERROR equ 02h ; abort in device handler TERMINATE_TSR equ 03h ; terminated but stayed resident ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; 65h Country Dependent Capitalization ; ;...............................................................; _CapCharacter equ 20h ; character capitalization _CapLengthDefString equ 21h ; length defined string capitalization _CapString equ 22h ; ASCIZ capitalization _CountryDepYesNo equ 23h ; does character represent Yes/No response _CapFnCharacter equ 0A0h ; filename character capitalization _CapFnLengthDefString equ 0A1h ; filename length defined string capitalization _CapFnString equ 0A2h ; filename ASCIZ capitalization ; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Structure Definitions ; ;...............................................................; ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; File Name ; ;...............................................................; FILENAME struc fnName db '????????' fnExtension db '???' FILENAME ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Directory Entries ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; See Functions ; ; ; ; _SearchFirstFileFCB 11h ; ; _SearchNextFileFCB 12h ; ;...............................................................; DIRENTRY struc deName db '????????' deExtension db '???' deAttributes db ? deReserved db 10 dup (?) deTime dw ? ; Time Format ; 0 - 4 Two second intervals ; 5 -10 Minutes (0 - 59) ; 11 -15 Hours (0 - 23) deDate dw ? ; Date Format ; 0 - 4 Day (1 - 31) ; 5 - 8 Month (1 - 12) ; 9 -15 Year since 1980 deStartCluster dw ? deFileSize dd ? DIRENTRY ends ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Attribute bits ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ATTR_NORMAL equ 00h ATTR_READONLY equ 01h ATTR_HIDDEN equ 02h ATTR_SYSTEM equ 04h ATTR_VOLUME equ 08h ATTR_DIRECTORY equ 10h ATTR_ARCHIVE equ 20h ATTR_MASK equ 1Fh ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Special Characters ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - DIRENTRY_NEVERUSED equ 00h SPECIAL_CHAR equ 05h DIRENTRY_DELETED equ 0E5h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Find First/ Find Next ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; See Functions ; ; ; ; _FindFirstFile 4Eh ; ; _FindNextFile 4Fh ; ;...............................................................; FINDENTRY struc findSrchDrive db ? findSrchName db '????????' ; name to search findSrchExtension db '???' findSrchAttributes db ? findDirEntry dw ? ; dir entry (;** Not Double !!) findDirBegCluster dw ? ; dir beg cluster findDirCurrCluster dw ? ; dir curr cluster findCCBPointer dw ? ; ccb pointer findFileAttribute db ? findFileTime dw ? findFileDate dw ? findFileSize dd ? findFileName db 13 dup (?) ; null terminated name FINDENTRY ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; File Tables ; ;...............................................................; FT struc nextFTPointer dd ? numberSFTEntries dw ? FT ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; System File Tables ; ;...............................................................; SFT struc sftRefCount dw ? sftMode dw ? sftFileAttrib db ? sftDevInfo dw ? ; device info sftDCB dd ? ; file DCB address or driver address sftBegCluster dw ? sftTime dw ? sftDate dw ? sftFileSize dd ? sftFilePosition dd ? sftRelCluster dw ? sftCurCluster dw ? ; 0000 if never read/ written sftDirSector dd ? ; dir sector containing entry sftDirIndex db ? ; used in search next sftFileName db '????????' sftFileExtension db '???' sftShareSftPointer dd ? ; points to other shared file sftOwnerMachine dw ? sftOwnerPSP dw ? sftShareRecordPtr dw ? ; share record pointer SFT ends ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Mode ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - sftENTRY_ISFCB equ 8000h sftDENY_NONE equ 0040h sftDENY_READ equ 0030h sftDENY_WRITE equ 0020h sftEXCLUSIVE equ 0010h sftNET_FCB equ 0070h sftWRITE equ 0001h sftREAD equ 0000h ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; sftDevInfo ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - sftShared equ 8000h sftDateset equ 4000h sftIoctl equ 4000h sftIsDevice equ 0080h sftEof equ 0040h sftBinary equ 0020h sftSpecial equ 0010h sftIsclock equ 0008h sftIsnul equ 0004h sftIsstdout equ 0002h sftIsstdin equ 0001h sftWritten equ 0040h sftDrivemask equ 003fh ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; File Control Blocks ; ;...............................................................; FCB struc fcbDrive db ? fcbName db '????????' fcbExtension db '???' fcbCurrBlockNo dw ? fcbRecordSize dw ? fcbFileSize dd ? fcbDate dw ? fcbTime dw ? fcbSFN db ? ; handle to sft system fcbFlags db ? ; modified flags fcbDHD dd ? ; device header/DCB fcbBegClusterNo dw ? ; start of file cluster number fcbCurrRecNo db ? fcbRandomRecNo dd ? FCB ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Extended FCB Header ; ;...............................................................; ExtendedFCBHdr struc extSignature db ? db '?????' extAttribute db ? ExtendedFCBHdr ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; System Access Control Block ; ;...............................................................; DISKACCESS struc diskAcDrive dw ? ; set at init diskAcPosition dd ? ; set at init diskAcFileSize dd ? ; set at init diskAcBegCluster dw ? ; set at init (cluster #) diskAcCurCluster dw ? ; computed (cluster #) diskAcCurSector dd ? ; computed (sector #) diskAcOffAtBegBuffer dd ? ; computed (file offset ) diskAcOffAtBegCluster dd ? ; computed (file offset ) diskAcBufferPtr dd ? ; dynamically assigned DISKACCESS ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Directory Access Block ; ;...............................................................; DIRACCESS struc fileAcDrive dw ? ; which drive file is located fileAcCluster dw ? ; which cluster file is located fileAcDirCluster dw ? ; which dir cluster fileAcDirSector dd ? ; which dir sector fileAcDirOffset dw ? ; offset in directory sector fileAcBufferPtr dd ? ; pointer to directory buffer fileAcDevicePtr dd ? ; if device, device service address fileAcNameOffset dw ? ; offset in Expanded Name fileAcExpandedName db 128 dup (?) DIRACCESS ends ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Flags for file parsing ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FILEIS_FCB equ 0001h ; file passed is an FCB FILE_NODEVICENAME equ 0002h ; path may not contain a device name FILEHAS_WILDCHARS equ 0004h ; path may contain wild characters FILEHAS_NOFILENAME equ 0008h ; path may not contain filename FILECANNOT_BEDEFINED equ 0010h ; filename must not exist FILECANNOT_BEDIRECTORY equ 0020h ; filename must not exist FILEMAY_EXIST equ 0040h ; file may exist (cluster not -1 ) FILE_ORDEVICE equ 0000h ; file or device must exist ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Std Character I/O Redirection Table ; ;...............................................................; STDREDIREC struc stdDriverName db '????????' ; driver name stdIOHandle dw ? ; handle assigned, if any stdDevInfo dw ? ; device assign bits STDREDIREC ends stdRedirec_Aux equ 0 stdRedirec_Con equ 1 stdRedirec_Prn equ 2 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Drive Parameter Block ; ;...............................................................; DPB struc _dpbDrive db ? _dpbUnit db ? _dpbBytesPerSector dw ? _dpbClusterSizeMask db ? _dpbClusterSizeShift db ? _dpbFirstFAT dw ? _dpbNumCopiesFAT db ? _dpbMaxAllocRootDir dw ? _dpbFirstDataSector dw ? _dpbMaxClusterNumber dw ? _dpbSectorsPerFat dw ? ; in DOS ver 5 this became a word _dpbFirstDirSector dw ? _dpbptrDeviceDriver dd ? _dpbMediaDescriptor db ? _dpbAccessFlag db ? ; -1 if must be rebuilt _dpbNextDPB dd ? _dpbNextFree dw ? ; cluster where to search for next free _dpbFreeCount dw ? ; number of free clusters remaining DPB ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Drive Parameter Block ; ;...............................................................; BPB struc _bpbBytesPerSector dw ? _bpbSectorsPerCluster db ? _bpbResSectors dw ? _bpbNumCopiesFAT db ? _bpbMaxAllocRootDir dw ? _bpbMaxSectors dw ? ; if zero, see huge sectors _bpbMediaDescriptor db ? _bpbSectorsPerFat dw ? _bpbSectorsPerTrack dw ? _bpbHeads dw ? _bpbHiddenSectors dd ? _bpbHugeSectors dd ? BPB ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Current Directory Entries ; ;...............................................................; CDS struc _cdsActualDirectory db 67 dup (?) ; asciz name _cdsFlags dw ? _cdsPtrToDPB dd ? _cdsStartClusterDir dw ? _cdsNonSubstOffset db ? _cdsPtrToIFSDriver dd ? CDS ends ; for Networked Drives _cdsRedirectIFSPtr equ 73 _cdsParameter equ 77 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Memory Management Blocks ; ;...............................................................; MEMBLOCK struc _memSignature db ? ; always 4D _memParent dw ? ; seg address of owner _memAlloc dw ? ; allocated size _memReserved db '???' _memPgmName db 8 dup (?) ; program name or null MEMBLOCK ends _RxDOS_MEMSIGNATURE equ 4Dh _RxDOS_ENDSIGNATURE equ 5Ah _RxDOS_PARENT_SIGNATURE equ 0008h ; mem parent signature _MIN_RxDOS_ALLOC_PARAS equ 2 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Buffers (Cache) Block ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; ; ; Compatability note: ; ; ; ; This buffer's definition is slightly different from MSDOS ; ; but appears to function in exactly the same way. ; ; ; ;...............................................................; CCB struc ccbNext dw ? ; next cache control block ccbPrev dw ? ; prev cache control block ccbDrive db ? ; drive ccbStatus db ? ; status flags ccbLBN dd ? ; block number (sector) ccbNumCopies db ? ; number of FAT copies (*) ccbSectorOffsets dw ? ; offset between FAT sectors (*) ccbDPB dd ? ; pointer to drive parameter block ccbCount dw ? ; count if remote ccbSFTIdent db ? ; system sft Handle ccbData db 512 dup ( ? ) ; data ; (*) unused by RxDOS CCB ends ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Flags ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ccb_isFAT equ 02h ccb_isDIR equ 04h ccb_isDATA equ 08h ccb_isVALID equ 20h ; contains valid data ccb_isDIRTY equ 40h ccb_isREMOTE equ 80h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Program Segment Prefix (PSP) ; ;...............................................................; PSP struc pspInt20 dw ? ; Int 20 instruction pspNextParagraph dw ? ; seg address of next paragraph db ? ; not used pspDispatcher db 5 dup ( ? ) ; long call to MS-DOS pspTerminateVect dd ? ; Terminate Vector (Int 22h) pspControlCVect dd ? ; Control-C Vector (Int 23h) pspCritErrorVect dd ? ; CritError Vector (Int 24h) pspParentId dw ? ; PSP seg of parent pspHandleTable db 20 dup ( ? ) ; Allocated Handle Table pspEnvironment dw ? ; seg address of environment block pspUserStack dd ? ; user stack pspFileHandleCount dw ? ; handles allocated pspFileHandlePtr dd ? ; pointer to handle table db 24 dup ( ? ) pspDosCall db 3 dup ( ? ) db 9 dup ( ? ) pspFCB_1 db 16 dup ( ? ) ; FCB 1 pspFCB_2 db 16 dup ( ? ) ; FCB 2 db 4 dup ( ? ) pspCommandTail db 128 dup ( ? ) ; command tail (also default DTA ) PSP ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Exe File Header ; ;...............................................................; EXEHEADER struc exeSignature dw ? ; .EXE file signature exeExtraBytes dw ? ; number of bytes in last partial page exePages dw ? ; number of whole and partial pages exeRelocItems dw ? ; number of pointers in reloc table exeHeaderSize dw ? ; size of header, in pages exeMinAlloc dw ? ; minimum allocation exeMaxAlloc dw ? ; maximum allocation exeInitSS dw ? ; initial ss value exeInitSP dw ? ; initial sp value exeChecksum dw ? ; complemented checksum exeInitIP dw ? ; initial ip value exeInitCS dw ? ; initial cs value exeRelocTable dw ? ; byte offset to reloc table exeOverlay dw ? ; overlay number EXEHEADER ends EXE_SIGNATURE equ 5A4DH ; 'MZ' ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Execution State ; ;...............................................................; EXECSTATE struc dw ? execFlags dw ? execProgName dd ? execPSP dw ? execStartAddr dd ? execProgSize dd ? EXECSTATE ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Load and Execute ; ;...............................................................; LOADEXEC struc lexecEnvironment dw ? lexecCommandTail dd ? lexecFCB_1 dd ? lexecFCB_2 dd ? LOADEXEC ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Load Program ; ;...............................................................; LOADPROG struc lprogEnvironment dw ? lprogCommandTail dd ? lprogFCB_1 dd ? lprogFCB_2 dd ? lprogCSID dd ? ; starting code address lprogSSSP dd ? ; starting stack address LOADPROG ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Get Buffered Input Line Structure ; ;...............................................................; BUFLINE struc bufMaxLength db ? ; max bytes bufActualLength db ? ; actual bytes read bufData db 128 dup(?) ; actual bytes (any length) BUFLINE ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Line Editor Structure ; ;...............................................................; LINEEDITOR struc editCursor dw ? ; cursor offset editMaxLength dw ? ; max characters in buffer editMaxChars dw ? ; max characters allowed editFlags dw ? ; flags editPhysCursorRow db ? ; beg of edit phys cursor pos editPhysCursorCol db ? ; beg of edit phys cursor pos editBufPointer dd ? ; pointer to client buffer LINEEDITOR ends editInsertFlag equ 8000h ; insert mode editSearchFlag equ 4000h ; search mode ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Clock Data ; ;...............................................................; CLOCKDATA struc cl_daysSince dw ? ; since Jan 1 cl_minutes db ? cl_hours db ? cl_hseconds db ? cl_seconds db ? CLOCKDATA ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; DOS Error Messages ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; ; ; All error messages are defined here. ; ; ; ; ; ;...............................................................; errInvalidFunction equ 0001h errFileNotFound equ 0002h errPathNotFound equ 0003h errIllegalName equ ( errPathNotFound ) errNoHandlesAvailable equ 0004h errAccessDenied equ 0005h errInvalidHandle equ 0006h errArenaTrashed equ 0007h errNotEnoughMemory equ 0008h errInvalidBlock equ 0009h errInvalidAccess equ 000Ch errInvalidDrive equ 000Fh errCurrentDirectory equ 0010h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Critical Error Flags ; ;...............................................................; CRITERROR_IGNORE equ 00 CRITERROR_RETRY equ 01 CRITERROR_TERMINATE equ 02 CRITERROR_FAILOPERATION equ 03 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; BIOS Parameters ; ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -; ; ; ; These definitions are part of the common BIOS access area ; ; at seg 40:xxxx ; ; ; ;...............................................................; _BIOS_Memory equ 0013h _BIOS_NumFixedDrives equ 0075h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Device Drivers Data Structures ; ;...............................................................; DEVICEINIT equ 00h MEDIAREQUEST equ 01h BUILDDPB equ 02h IOCTLREAD equ 03h DEVICEREAD equ 04h NONDESTRREAD equ 05h INPUTSTATUS equ 06h INPUTFLUSH equ 07h DEVICEWRITE equ 08h DEVICEWRITEVERIFY equ 09h OUTPUTSTATUS equ 0ah OUTPUTFLUSH equ 0bh IOCTLWRITE equ 0ch OPENDEVICE equ 0dh CLOSEDEVICE equ 0eh REMOVABLEMEDIA equ 0fh OUTPUTTILLBUSY equ 10h GENERICIOCTL equ 13h GETLOGICALDEVICE equ 17h SETLOGICALDEVICE equ 18h IOCTLQUERY equ 19h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Internal Device Service Table ; ;...............................................................; DEVSERVICETABLE struc devsrvEntries db ? devsrvBranches dw ? DEVSERVICETABLE ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; General Request Header Definition ; ;...............................................................; DEVReqHeader struc rhLength db ? rhUnit db ? rhFunction db ? rhStatus dw ? rhReserved db 8 dup ( ? ) ; extended definition rhMedia db ? ; Media id DEVReqHeader ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Media Request Header Definition ; ;...............................................................; MEDIAReqHeader struc mrLength db ? mrUnit db ? mrFunction db ? mrStatus dw ? mrReserved db 8 dup ( ? ) mrMediaID db ? ; mrReturn db ? ; Return value mrVolumeID dd ? ; volume identifier MEDIAReqHeader ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; DPB Request Header Definition ; ;...............................................................; BUILDDPBReqHeader struc bbrLength db ? bbrUnit db ? bbrFunction db ? bbrStatus dw ? bbrReserved db 8 dup ( ? ) bbrMediaID db ? ; bbrFATSector dd ? ; buffer with first FAT sector bbrBPBAddress dd ? ; DPB address BUILDDPBReqHeader ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Read/ Write Request Header Definition ; ;...............................................................; READReqHeader struc rwrLength db ? rwrUnit db ? rwrFunction db ? rwrStatus dw ? rwrReserved db 8 dup ( ? ) rwrMediaID db ? ; rwrBuffer dd ? ; rwrBytesReq dw ? ; rwrStartSec dw ? ; rwrVolumeID dd ? ; volume identifier rwrHugeStartSec dd ? ; 32 bit sector READReqHeader ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; NonDestructive LookAhead Read Definition ; ;...............................................................; NONDESTREADReqHeader struc ndrLength db ? ndrUnit db ? ndrFunction db ? ndrStatus dw ? ndrReserved db 8 dup ( ? ) ndrCharRead db ? ; NONDESTREADReqHeader ends ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Device Definition Header ; ;...............................................................; DEVICEHEADER struc devLink dd ? devAttributes dw ? devStrategy dw ? devInterrupt dw ? devName db '????????' ; character devices ; extended definition ( non-standard ) devTablePtr dw ? devLogicalUnit dw ? DEVICEHEADER ends devUnits equ devName ; block devices ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Device Definition Flags ; ;...............................................................; DEV_STDINPUT equ 0001h DEV_STDOUTPUT equ 0002h DEV_NULL equ 0004h DEV_CLOCK equ 0008h DEV_FASTCHARIO equ 0010h ; supports int 29 fast i/o DEV_LOGICALMAPPING equ 0040h ; supports logical dev mapping DEV_IOCTL equ 0080h ; supports IOCTL DEV_REMOVABLEMEDIA equ 0800h ; supports removable media calls DEV_OUTPUTTILLBUSY equ 2000h ; supports output till busy DEV_IOCTL_RW equ 4000h ; supports IOCTL read/write DEV_CHAR equ 8000h ; character mode device DEV_BLOCKEXTNADDRESS equ 0002h ; block device support 32 bit extended address DEV_REQUIRESFATSECTOR equ 2000h ; requires FAT sector address ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Device Errors And Status ; ;...............................................................; OP_ERROR equ 8000h OP_NODATA equ 0300h OP_BUSY equ 0200h OP_DONE equ 0100h OP_EXITERROR equ 8100h devErrWriteProtectViol equ 0 devErrUnknownUnit equ 1 devErrDeviceNotReady equ 2 devErrUnknownCommand equ 3 devErrCRCerr equ 4 devErrBadDriveReq equ 5 devErrSeekError equ 6 devErrUnknownMedia equ 7 devErrSectorNotFound equ 8 devErrPrinterOutPaper equ 9 devErrWriteFault equ 10 devErrReadFault equ 11 devErrGeneralFailure equ 12 devErrInvalidDiskChange equ 15 ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Con Definitions ; ;...............................................................; BIOS_ConRead equ 00h BIOS_ConStatus equ 01h BIOS_ConReadFlags equ 02h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Comm Definitions ; ;...............................................................; BIOS_ComInit equ 00h ; returns line status/ modem status BIOS_ComWrite equ 01h ; returns line status/ modem status BIOS_ComRead equ 02h ; returns line status/ modem status BIOS_ComStatus equ 03h ; returns line status/ modem status ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Comm Line Status Register ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - CommLS_TimeOut equ 8000h CommLS_ShiftRegEmpty equ 4000h CommLS_HoldRegEmpty equ 2000h CommLS_BreakDetect equ 1000h CommLS_FE equ 0800h CommLS_PE equ 0400h CommLS_OE equ 0200h CommLS_DataAvail equ 0100h ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Comm Modem Status Register ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - CommMS_RLSD equ 0080h CommMS_RING equ 0040h CommMS_DSR equ 0020h CommMS_CTS equ 0010h CommMS_ChgRLSD equ 0008h CommMS_ChgRING equ 0004h CommMS_ChgDSR equ 0002h CommMS_ChgCTS equ 0001h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Prn Definitions ; ;...............................................................; BIOS_PrnWrite equ 00h ; returns status BIOS_PrnInit equ 01h BIOS_PrnStatus equ 02h Prn_RetryCount equ 03 ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; Print Status ;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Prn_NotBusy equ 8000h Prn_Ack equ 4000h Prn_OutOfPaper equ 2000h Prn_Selected equ 1000h Prn_IOError equ 0800h Prn_TimeOut equ 0100h ;'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''; ; Define Structure Sizes ; ;...............................................................; sizedevName equ 8 sizefnName equ 8 sizefnExtension equ 3 sizeFILENAME equ sizefnName + sizefnExtension sizeTempFILENAME equ sizeFILENAME + 1 sizeTempExpandedFCBNAME equ sizeFILENAME + 4 ; drive: + null sizeDIRENTRY equ size DIRENTRY sizeFT equ size FT sizeSFT equ size SFT sizeFCB equ size FCB sizeExtendedFCBHdr equ size ExtendedFCBHdr sizeCLOCKDATA equ size CLOCKDATA sizeDISKACCESS equ size DISKACCESS sizeDIRACCESS equ size DIRACCESS sizeFINDENTRY equ size FINDENTRY sizeDPB equ size DPB sizeCDS equ size CDS sizeMEMBLOCK equ size MEMBLOCK sizeCCB equ size CCB sizeCCBData equ 512 sizePSP equ size PSP sizePSPHandleTable equ 20 sizeSector equ 512 sizePage equ 512 sizeParasPerPage equ (sizePage/ 16 ) sizeCmdLine equ 128 sizeCmdLineStruct equ (sizeCmdLine + 3) sizeLINEEDITOR equ size LINEEDITOR sizeStdRedirec equ size STDREDIREC sizeEXECSTATE equ size EXECSTATE sizeEXEHEADER equ size EXEHEADER sizeLOADEXEC equ size LOADEXEC sizeLOADPROG equ size LOADPROG ; Device Headers sizeDEVReqHeader equ size DEVReqHeader sizeREADReqHeader equ size READReqHeader sizeMEDIAReqHeader equ size MEDIAReqHeader sizeBUILDDPBReqHeader equ size BUILDDPBReqHeader sizeMaxReqHeader equ sizeREADReqHeader sizeDEVICEHEADER equ size DEVICEHEADER