Last change
on this file since 294 was 294, checked in by krille_n_@…, 13 years ago |
Commit 2/2 (BIOS):
- Fixed a bug in AH1h_HStatus.asm.
- Minor optimizations.
- Fixed spelling and did some cleaning.
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File size:
1.2 KB
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Rev | Line | |
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[116] | 1 | ; Project name : XTIDE Universal BIOS
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[3] | 2 | ; Description : Int 13h function AH=1h, Read Disk Status.
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| 3 |
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| 4 | ; Section containing code
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| 5 | SECTION .text
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| 6 |
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| 7 | ;--------------------------------------------------------------------
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| 8 | ; Int 13h function AH=1h, Read Disk Status.
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| 9 | ;
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| 10 | ; AH1h_HandlerForReadDiskStatus
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| 11 | ; Parameters:
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[148] | 12 | ; DL: Translated Drive number
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| 13 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
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[150] | 14 | ; SS:BP: Ptr to IDEREGS_AND_INTPACK
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| 15 | ; Returns with INTPACK:
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[3] | 16 | ; AH: Int 13h floppy return status
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| 17 | ; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error)
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| 18 | ;--------------------------------------------------------------------
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| 19 | ALIGN JUMP_ALIGN
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| 20 | AH1h_HandlerForReadDiskStatus:
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[148] | 21 | LOAD_BDA_SEGMENT_TO ds, ax, !
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[258] | 22 |
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| 23 | %ifdef MODULE_SERIAL_FLOPPY
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| 24 | test dl, dl
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[294] | 25 | js .HardDisk
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| 26 | mov ah, [BDA.bFDRetST] ; Unlike for hard disks below, floppy version does not clear the status
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[258] | 27 | jmp .done
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[294] | 28 | .HardDisk:
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[258] | 29 | %endif
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[294] | 30 |
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| 31 | xchg ah, [BDA.bHDLastSt] ; Load and clear last error (AH is cleared with the LOAD_BDA_SEGMENT_TO above)
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| 32 |
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[258] | 33 | .done:
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[294] | 34 | %ifndef USE_186
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[150] | 35 | call Int13h_SetErrorCodeToIntpackInSSBPfromAH
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[148] | 36 | jmp Int13h_ReturnFromHandlerWithoutStoringErrorCode
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[294] | 37 | %else
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| 38 | push Int13h_ReturnFromHandlerWithoutStoringErrorCode
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| 39 | jmp Int13h_SetErrorCodeToIntpackInSSBPfromAH
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| 40 | %endif
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