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Last change
on this file since 153 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:
1.0 KB
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| 1 | ; Project name : XTIDE Universal BIOS
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| 2 | ; Description : Sets IDE Device specific parameters to DPT.
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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 | ; IdeDPT_Finalize
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| 9 | ; Parameters:
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| 10 | ; DS:DI: Ptr to Disk Parameter Table
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| 11 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 12 | ; Returns:
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| 13 | ; Nothing
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| 14 | ; Corrupts registers:
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| 15 | ; AX, BX, CX, DX
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| 16 | ;--------------------------------------------------------------------
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| 17 | IdeDPT_Finalize:
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| 18 | ; Fall to .StoreBlockMode
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| 19 |
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| 20 | ;--------------------------------------------------------------------
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| 21 | ; .StoreBlockMode
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| 22 | ; Parameters:
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| 23 | ; DS:DI: Ptr to Disk Parameter Table
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| 24 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
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| 25 | ; Returns:
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| 26 | ; Nothing
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| 27 | ; Corrupts registers:
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| 28 | ; Nothing
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| 29 | ;--------------------------------------------------------------------
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| 30 | .StoreBlockMode:
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| 31 | mov al, 1
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| 32 | mov ah, [es:si+ATA1.bBlckSize] ; Max block size in sectors
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| 33 | mov [di+DPT_ATA.wSetAndMaxBlock], ax
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| 34 | ; Fall to .EndDPT
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| 35 |
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| 36 |
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| 37 | .EndDPT:
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| 38 | ret
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