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:
1019 bytes
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1 | ; File name : AH1h_HStatus.asm |
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2 | ; Project name : IDE BIOS |
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3 | ; Created date : 27.9.2007 |
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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=1h, Read Disk Status. |
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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=1h, Read Disk Status. |
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13 | ; |
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14 | ; AH1h_HandlerForReadDiskStatus |
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15 | ; Parameters: |
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16 | ; AH: Bios function 1h |
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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: Int 13h floppy return status |
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22 | ; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error) |
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23 | ; IF: 1 |
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24 | ; Corrupts registers: |
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25 | ; Flags |
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26 | ;-------------------------------------------------------------------- |
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27 | ALIGN JUMP_ALIGN |
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28 | AH1h_HandlerForReadDiskStatus: |
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29 | push ds |
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30 | |
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31 | LOAD_BDA_SEGMENT_TO ds, di |
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32 | xor ah, ah ; Zero AH |
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33 | cmp ah, [BDA.bHDLastSt] ; Set CF if error code is non-zero |
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34 | mov ah, [BDA.bHDLastSt] ; Last error to AH |
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35 | |
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36 | pop ds |
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37 | jmp Int13h_PopDiDsAndReturn |
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