| 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, 2011-2012 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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