Mercurial > hg > Members > kono > nitros9-code
view 3rdparty/roms/dos/SuperDos/dosdefs.asm @ 1988:b96143206d83
Added more definitions as I have worked them out :)
| author | afra |
|---|---|
| date | Mon, 30 Jan 2006 23:13:04 +0000 |
| parents | 4037b23c848d |
| children |
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; ; SuperDos E6, Copyright (C) 1986 ???, Grosvenor. ; ; Disassembled 2004-11-05, P.Harvey-Smith. ; ; 2005-10-10, forked ram vars into seperate include file. ; ifne RSDos ; Disk command codes WD1793, WD1773, RSDos FDC carts. WDCmdRestore EQU $00 ; Restore to track 0 WDCmdSeek EQU $10 ; Seek to track command WDCmdReadSec EQU $80 ; Read sector command WDCmdWriteSec EQU $A0 ; Write sector command WDCmdReadAddr EQU $C0 ; Read address mark WDCmdForceInt EQU $D0 ; Force inturrupt WDCmdWriteTrack EQU $F4 ; Write (format) track else ; Disk command codes WD2797, Dragon Dos, Cumana Dos, Dragon Alpha/Professional, Dragon Beta WDCmdRestore EQU $00 ; Restore to track 0 WDCmdSeek EQU $10 ; Seek to track command WDCmdReadSec EQU $88 ; Read sector command WDCmdWriteSec EQU $A8 ; Write sector command WDCmdReadAddr EQU $C0 ; Read address mark WDCmdForceInt EQU $D0 ; Force inturrupt WDCmdWriteTrack EQU $F4 ; Write (format) track endc ; ; Step rates. ; StepRate6ms EQU $00 ; 6ms step rate StepRate12ms EQU $01 ; 12ms step rate StepRate20ms EQU $02 ; 20ms step rate StepRate30ms EQU $03 ; 30ms step rate SeepRateDefault EQU StepRate20ms ; Default TrackPrecomp EQU $10 ; Track to enable precomp if greater SectorsPerTrack EQU $12 ; Sectors per track MaxDriveNo EQU $04 ; Maximum valid drive no MaxFilenameLen EQU $0E ; Max filename length, DriveNo:Filename.EXT ; ; Boot command related. ; BootFirstSector EQU $03 ; Boot sector is track 0 sector 3 BootLastSector EQU $12 ; Last sector of boot BootSignature EQU $4F53 ; Boot signature 'OS' BootLoadAddr EQU $2600 ; Boot area load address. BootEntryAddr EQU $2602 ; Boot entry address ; ; Dir track related ; DirPrimary EQU $14 ; Primary dir track is track 20 DirBackup EQU $10 ; Backup on track 16 ; ; DOS Low memory variables ; AutoFlag EQU $FF ; Auto re-number flag, if $613=this then auto enter basic lines DosHWByte EQU $00EA ; Location of hardware IO byte LastActiveDrv EQU $00EB ; Last active drive number DskTrackNo EQU $00EC ; Disk track no DskSectorNo EQU $00ED ; Disk sectror no DiskBuffPtr EQU $00EE ; Disk buffer pointer DosLastDrive EQU $00EB ; Active/last used drive number (1-4) DosDiskError EQU $00F0 ; Disk error status byte DosCurrCtrlBlk EQU $00F1 ; Current file control block (0..9) $FF=no files open DosBytesInDTA EQU $00F2 ; Number of bytes in DTA (also used for tracks in DSKINIT). DosNoBytesMove EQU $00F3 ; Number of bytes to transfer to/from buffer DosRecLenFlag EQU $00F4 ; Record length flag, 00 don'r care $FF=do care DosIRQTimeFlag EQU $00F5 ; Dos IRQ timeout flag, 00=check for timeout DosIOInProgress EQU $00f6 ; I/O currently in progress flag 0x00 check for time out, Non-0x00 skip timeout check DosSectorSeek EQU $00F8 ; Sector currently seeking {SuperDos Rom} DosAreaStart EQU $0600 ; Start of RAM used by DOS DosErrorCode EQU $0603 ; Error code from DOS DosTimeout EQU $0605 ; Timeout count, timeout occurs when this location is decremented from 0x01 to 0x00 DosHWMaskFF40 EQU $0606 ; Hardware command byte mask for FF40 DosHWMaskFF48 EQU $0607 ; hardware control mask for $ff48 DosVerifyFlag EQU $0608 ; Verify flag, 00=no verify $FF=verify DosErrorMask EQU $0609 ; Error mask, ANDed with error code from WD DosDefDriveNo EQU $060A ; Default drive number DosAutoCurrent EQU $060D ; AUTO current line no DosAutoInc EQU $060F ; AUTO line increment DosRunLoadFlag EQU $0611 ; Run/load flag $00=LOAD DosFlFreadFlag EQU $0612 ; Fread/FLread flag 00=fread, $FF=FLread DosAutoFlag EQU $0613 ; Auto flag, $FF=auto, $00=no auto DosErrGotoFlag EQU $0614 ; ERROR GOTO flag, 0x00 Off Non-0x00 On DosErrDestLine EQU $0615 ; Error destination line DosErrLineNo EQU $0617 ; ERR line no DosErrLast EQU $0619 ; Last ERR error Drv0Details EQU $061C ; Drive 0 details (6 bytes) Drv1Details EQU $0622 ; Drive 1 details (6 bytes) Drv2Details EQU $0628 ; Drive 2 details (6 bytes) Drv3Details EQU $062E ; Drive 3 details (6 bytes) DrvDeatailLen EQU $06 ; Entries are 6 bytes long ; Offsets into drive details DrvDetUseCnt EQU $05 ; Usage/open file count ? BuffCount EQU $04 ; 4 disk buffers BuffDetailSize EQU $07 ; Buffer detail entries ar 7 bytes long Buff1Details EQU $0634 ; Disk buffer 1 details Buff2Details EQU $063B ; Disk buffer 2 details Buff3Details EQU $0642 ; Disk buffer 3 details Buff4Details EQU $0649 ; Disk buffer 4 details ; Disk buffer details offsets for above table BuffLSN EQU $00 ; LSN number BuffFlag EQU $02 ; Flag, tested for $55 and $FF (also set to $01) BuffDrive EQU $03 ; Drive no 1..4 BuffAge EQU $04 ; Age of buffer since last use, 1=oldest..4=youngest BuffAddr EQU $05 ; Buffer address ;BuffFlag values BuffFree EQU $00 ; Disk buffer is free BuffUnknown EQU $01 ; Unknown flag set by SuperDosFindAndRead BuffInUse EQU $55 ; Buffer in use BuffDirty EQU $FF ; Buffer has been modified, but not written to disk DosCurDriveInfo EQU $0650 ; Dos current drive info DosCurExtension EQU $0658 ; Current extension, used in validation DosCurDriveNo EQU $065B ; Current drive no DosCurCount EQU $0660 ; Current count, used in various places DosCurLSN EQU $066F ; Current LSN, of current DIR sector being processed DosCurDirBuff EQU $067F ; Pointer to the current Dire sector, Buffer def block DosCurFileNo EQU $0682 ; Current file number on disk, to get dir entry for DosNewUSRTable EQU $0683 ; New USR table, relocated from low ram ;Drive descriptor table DosD0Online EQU $0697 ; Drive 0 online flag DosD1Online EQU $0698 ; Drive 1 online flag DosD2Online EQU $0699 ; Drive 2 online flag DosD3Online EQU $069A ; Drive 3 online flag DosD0Track EQU $069B ; Drive 0 current track DosD1Track EQU $069C ; Drive 1 current track DosD2Track EQU $069D ; Drive 2 current track DosD3Track EQU $069E ; Drive 3 current track DosD0StepRate EQU $069F ; Drive 0 step rate DosD1StepRate EQU $06A0 ; Drive 1 step rate DosD2StepRate EQU $06A1 ; Drive 2 step rate DosD3StepRate EQU $06A2 ; Drive 3 step rate DosD0Tracks EQU $06A3 ; Tracks on disk in drive 0 DosD1Tracks EQU $06A4 ; Tracks on disk in drive 1 DosD2Tracks EQU $06A5 ; Tracks on disk in drive 2 DosD3Tracks EQU $06A6 ; Tracks on disk in drive 3 DosD0SecTrack EQU $06A7 ; Sectors per track drive 0 DosD1SecTrack EQU $06A8 ; Sectors per track drive 1 DosD2SecTrack EQU $06A9 ; Sectors per track drive 2 DosD3SecTrack EQU $06AA ; Sectors per track drive 3 DosDirSecStatus EQU $06AB ; Directory sector status $06ab-$06bc DosFCB0Addr EQU $06BD ; File Control Block 0 Address DosFCB1Addr EQU $06DC ; File Control Block 1 Address DosFCB2Addr EQU $06FB ; File Control Block 2 Address DosFCB3Addr EQU $071A ; File Control Block 3 Address DosFCB4Addr EQU $0739 ; File Control Block 4 Address DosFCB5Addr EQU $0758 ; File Control Block 5 Address DosFCB6Addr EQU $0777 ; File Control Block 6 Address DosFCB7Addr EQU $0796 ; File Control Block 7 Address DosFCB8Addr EQU $07B5 ; File Control Block 8 Address DosFCB9Addr EQU $07D4 ; File Control Block 9 Address DosFCBEnd EQU $07F3 ; First byte beyond last FCB DosDiskBuffBase EQU $0800 ; Base of Disk buffers DosFCBLength EQU $1F ; 31 bytes per FCB ; ; FCB structure may be : ; ; offset len purpose ; $00 8 Filename (zero padded) ; $08 3 Extension ; $0B 1 Drive number (1..4) ; $0C 3 File pointer ; $10 3 File len ? ; ; $1D 1 File Number ? (used by DIR). FCBFileName EQU $00 ; Filename FCBExtension EQU $08 ; Extension FCBDrive EQU $0B ; Drive no FCBFilePointer EQU $0C ; File Pointer FCBFileLen EQU $0F ; File Length FCBDiskFileNo EQU $1D ; File number on disk, (dir entry no). ; ; Backup command stack frame offsets ; ; These are offset from U on stack ; BupSrcDrive EQU 0 ; Drive number of source BupSrcTrk EQU 1 ; $0001 Source track and sector ? BupSrcSec EQU 2 ; Source sector no ; 3,U $DF5A Error masks ??? BupSrcBuff EQU 5 ; Source sector buffer addr ? BupDestDrive EQU 7 ; Drive number of dest ? BupDestTrk EQU 8 ; $0001 Dest track and sector ? BupDestSec EQU 9 ; Dest sector no ; 10,U $DF6D Error masks ??? BupDestBuff EQU 12 ; Dest sector buffer addr ? BupSecTrk EQU 14 ; Sector count per track to copy ? BupAvailPages EQU 15 ; Pages available to buffer sectors ; ; Offset from X, which will point to BupSrcDrive, or BupDestDrive ; BupDrive EQU 0 ; Drive number BupTrk EQU 1 ; $00 track BupSec EQU 2 ; $01 sector ; 3,X $DF5A ??? BupBuff EQU 5 ; Source sector buffer addr ? SpinUpDelay EQU $D800 ; Value for timeout loop ; ; Sync dir stack frame offsets ; ; These are offset from U on stack ; SyncDrive EQU 1 ; Drive we are syncing SyncSecNo EQU 3 ; Sector we are syncing ; ; Dos function codes used by hardware routine. ; DosFnRestore EQU $00 ; Restore to track 0 DosFnSeek EQU $01 ; Seek to a track DosFnReadSec EQU $02 ; Read a sector DosFnWriteSec EQU $03 ; Write a sector DosFnWriteSec2 EQU $04 ; not sure what difference is DosFnWriteTrack EQU $05 ; Write (format) track DosFnReadAddr EQU $06 ; Read address mark DosFnReadSec2 EQU $07 ; Read first two bytes of a sector ******************************************* ***** Directory Track realted defines ***** ******************************************* ; ; Dir entry format(s). ; ; Dragon/Super dos directory entries can take one of 2 formats, they can be either a ; filename block, containing filename, attributes & 4 allocation entries, or they can ; be a continuation block, containing just allocation entries. ; This is controled by the byte at offset $18, and the attributes. ; ; if AttrContinued = 0 then ; the byte at offset $18, contains the number of number of bytes in the last sector (256 bytes = 0). ; ; if AttrContinued = 0 then ; the byte at offset $18 controls the format of the entry : ; if 0 then ; Entry is a filename entry ; else ; Entry is a continuation block. ; Filename block format DirEntAttr EQU $00 ; Attributes (see above) DirEntFilename EQU $01 ; Filename, zero padded DirEntExtension EQU $09 ; Extension, zero padded DirEntFnBlock1 EQU $0C ; Allocation block #1 DirEntFnBlock2 EQU $0F ; Allocation block #2 DirEntFnBlock3 EQU $12 ; Allocation block #3 DirEntFnBlock4 EQU $15 ; Allocation block #4 DirEntFlag EQU $18 ; Filename/Continuation flag 0/nonzero ; Continuation block, DirEntAttr, and DirEntFlag, as above. DirEntCntBlock1 EQU $01 ; Allocation block #1 DirEntCntBlock2 EQU $04 ; Allocation block #2 DirEntCntBlock3 EQU $07 ; Allocation block #3 DirEntCntBlock4 EQU $0A ; Allocation block #4 DirEntCntBlock5 EQU $0D ; Allocation block #5 DirEntCntBlock6 EQU $10 ; Allocation block #6 DirEntCntBlock7 EQU $13 ; Allocation block #7 ; ; Allocation block format. ; AllocLSN EQU $00 ; Logical sector number of start of allocation AllocCount EQU $02 ; Count of number of sectors allocated. ; ; File Attributes ; AttrDeleted EQU %10000000 ; Deleted, may be reused AttrContinued EQU %00100000 ; Continuation entry, byte at $18 giver next entry no AttrEndOfDir EQU %00001000 ; End of directory, no more entries need to be scanned AttrWriteProt EQU %00000010 ; Write protect flag AttrIsCont EQU %00000001 ; This is a continuation entry. DirEntPerSec EQU $0A ; Directory entries per sector ; ; Sector 0 on Dir track ; BitmapPart1 EQU $00 ; Bitmap uses bytes $00..$FB on first sector DirTracks EQU $FC ; Tracks on disk DirSecPerTrk EQU $FD ; Sectors/track 18=Single sided, 36=Double sided DirTracks1s EQU $FE ; complement of DirTracks (used to validate) DirSecPerTrk1s EQU $FF ; Complement of DirSecPerTrk (used to validate)