Last change
on this file since 35 was
35,
checked in by aitotat, 14 years ago
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Cleaned recent changes a bit to save few bytes.
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File size:
1.2 KB
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1 | ; File name : AH14h_HDiag.asm |
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2 | ; Project name : IDE BIOS |
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3 | ; Created date : 28.9.2007 |
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4 | ; Last update : 24.8.2010 |
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5 | ; Author : Tomi Tilli |
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6 | ; Description : Int 13h function AH=14h, Controller Internal Diagnostic. |
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7 | |
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8 | ; Section containing code |
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9 | SECTION .text |
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10 | |
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11 | ;-------------------------------------------------------------------- |
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12 | ; Int 13h function AH=14h, Controller Internal Diagnostic. |
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13 | ; |
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14 | ; AH14h_HandlerForControllerInternalDiagnostic |
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15 | ; Parameters: |
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16 | ; AH: Bios function 14h |
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17 | ; DL: Drive number (8xh) |
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18 | ; Parameters loaded by Int13h_Jump: |
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19 | ; DS: RAMVARS segment |
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20 | ; Returns: |
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21 | ; AH: BIOS Error code |
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22 | ; AL: 0 (custom for this BIOS: .bReset byte from DPT) |
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23 | ; CF: 0 if succesfull, 1 if error |
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24 | ; IF: 1 |
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25 | ; Corrupts registers: |
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26 | ; Flags |
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27 | ;-------------------------------------------------------------------- |
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28 | ALIGN JUMP_ALIGN |
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29 | AH14h_HandlerForControllerInternalDiagnostic: |
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30 | call FindDPT_ForDriveNumber ; DS:DI now points to DPT |
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31 | mov al, [di+DPT.bReset] ; Load reset byte to AL |
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32 | test al, al ; Any error? |
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33 | jnz SHORT .ReturnError |
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34 | xor ah, ah ; Zero AH and CF since success |
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35 | jmp Int13h_PopDiDsAndReturn |
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36 | .ReturnError: |
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37 | mov ah, RET_HD_RESETFAIL |
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38 | stc |
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39 | jmp Int13h_PopDiDsAndReturn |
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