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 | ; |
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5 | ; XTIDE Universal BIOS and Associated Tools |
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6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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7 | ; |
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8 | ; This program is free software; you can redistribute it and/or modify |
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9 | ; it under the terms of the GNU General Public License as published by |
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10 | ; the Free Software Foundation; either version 2 of the License, or |
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11 | ; (at your option) any later version. |
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12 | ; |
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13 | ; This program is distributed in the hope that it will be useful, |
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14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | ; GNU General Public License for more details. |
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17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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18 | ; |
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19 | |
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20 | ; Section containing code |
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21 | SECTION .text |
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22 | |
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23 | ;-------------------------------------------------------------------- |
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24 | ; Int 13h function AH=1h, Read Disk Status. |
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25 | ; |
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26 | ; AH1h_HandlerForReadDiskStatus |
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27 | ; Parameters: |
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28 | ; DL: Translated Drive number |
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29 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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30 | ; SS:BP: Ptr to IDEREGS_AND_INTPACK |
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31 | ; Returns with INTPACK: |
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32 | ; AH: Int 13h floppy return status |
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33 | ; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error) |
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34 | ;-------------------------------------------------------------------- |
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35 | ALIGN JUMP_ALIGN |
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36 | AH1h_HandlerForReadDiskStatus: |
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37 | LOAD_BDA_SEGMENT_TO ds, ax, ! |
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38 | |
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39 | %ifdef MODULE_SERIAL_FLOPPY |
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40 | test dl, dl |
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41 | js .HardDisk |
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42 | mov ah, [BDA.bFDRetST] ; Unlike for hard disks below, floppy version does not clear the status |
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43 | jmp .done |
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44 | .HardDisk: |
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45 | %endif |
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46 | |
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47 | xchg ah, [BDA.bHDLastSt] ; Load and clear last error (AH is cleared with the LOAD_BDA_SEGMENT_TO above) |
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48 | |
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49 | .done: |
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50 | %ifndef USE_186 |
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51 | call Int13h_SetErrorCodeToIntpackInSSBPfromAH |
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52 | jmp Int13h_ReturnFromHandlerWithoutStoringErrorCode |
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53 | %else |
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54 | push Int13h_ReturnFromHandlerWithoutStoringErrorCode |
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55 | jmp Int13h_SetErrorCodeToIntpackInSSBPfromAH |
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56 | %endif |
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