source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH1h_HStatus.asm@ 422

Last change on this file since 422 was 376, checked in by gregli@…, 13 years ago

WIDE checkin... Added copyright and license information to sorce files, as per the GPL instructions for usage.

File size: 1.9 KB
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1; Project name : XTIDE Universal BIOS
2; Description : Int 13h function AH=1h, Read Disk Status.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
7;
8; This program is free software; you can redistribute it and/or modify
9; it under the terms of the GNU General Public License as published by
10; the Free Software Foundation; either version 2 of the License, or
11; (at your option) any later version.
12;
13; This program is distributed in the hope that it will be useful,
14; but WITHOUT ANY WARRANTY; without even the implied warranty of
15; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16; GNU General Public License for more details.
17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
19
20; Section containing code
21SECTION .text
22
23;--------------------------------------------------------------------
24; Int 13h function AH=1h, Read Disk Status.
25;
26; AH1h_HandlerForReadDiskStatus
27; Parameters:
28; DL: Translated Drive number
29; DS:DI: Ptr to DPT (in RAMVARS segment)
30; SS:BP: Ptr to IDEREGS_AND_INTPACK
31; Returns with INTPACK:
32; AH: Int 13h floppy return status
33; CF: 0 if AH = RET_HD_SUCCESS, 1 otherwise (error)
34;--------------------------------------------------------------------
35ALIGN JUMP_ALIGN
36AH1h_HandlerForReadDiskStatus:
37 LOAD_BDA_SEGMENT_TO ds, ax, !
38
39%ifdef MODULE_SERIAL_FLOPPY
40 test dl, dl
41 js .HardDisk
42 mov ah, [BDA.bFDRetST] ; Unlike for hard disks below, floppy version does not clear the status
43 jmp .done
44.HardDisk:
45%endif
46
47 xchg ah, [BDA.bHDLastSt] ; Load and clear last error (AH is cleared with the LOAD_BDA_SEGMENT_TO above)
48
49.done:
50%ifndef USE_186
51 call Int13h_SetErrorCodeToIntpackInSSBPfromAH
52 jmp Int13h_ReturnFromHandlerWithoutStoringErrorCode
53%else
54 push Int13h_ReturnFromHandlerWithoutStoringErrorCode
55 jmp Int13h_SetErrorCodeToIntpackInSSBPfromAH
56%endif
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