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Last change
on this file since 220 was 150, checked in by Tomi Tilli, 14 years ago |
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Changes to XTIDE Universal BIOS:
- Redesigned Disk Parameter Tables.
- Code generalizations for supporting non-IDE devices in the future.
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File size:
855 bytes
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| 1 | ; Project name : XTIDE Universal BIOS
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| 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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| 12 | ; DL: Translated Drive number
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| 13 | ; DS:DI: Ptr to DPT (in RAMVARS segment)
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| 14 | ; SS:BP: Ptr to IDEREGS_AND_INTPACK
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| 15 | ; Returns with INTPACK:
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| 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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| 21 | LOAD_BDA_SEGMENT_TO ds, ax, !
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| 22 | xchg ah, [BDA.bHDLastSt] ; Load and clear last error
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| 23 | call Int13h_SetErrorCodeToIntpackInSSBPfromAH
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| 24 | jmp Int13h_ReturnFromHandlerWithoutStoringErrorCode
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