source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH47h_ExtendedSeek.asm@ 592

Last change on this file since 592 was 526, checked in by krille_n_@…, 12 years ago

Changes:

  • Update of the copyright notices to include the year 2013.
File size: 2.0 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Int 13h function AH=47h, Extended Seek.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 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=47h, Extended Seek.
25;
26; AH47h_HandlerForExtendedSeek
27; Parameters:
28; SI: Same as in INTPACK
29; DL: Translated Drive number
30; DS:DI: Ptr to DPT (in RAMVARS segment)
31; SS:BP: Ptr to IDEPACK
32; Parameters on INTPACK:
33; DS:SI: Ptr to Disk Address Packet
34; Returns with INTPACK:
35; AH: Int 13h return status
36; CF: 0 if successful, 1 if error
37;--------------------------------------------------------------------
38ALIGN JUMP_ALIGN
39AH47h_HandlerForExtendedSeek:
40 ; Note that there is no Seek command for LBA48 addressing!
41 mov es, [bp+IDEPACK.intpack+INTPACK.ds] ; ES:SI to point Disk Address Packet
42 cmp BYTE [es:si+DAP.bSize], MINIMUM_DAP_SIZE
43 jb SHORT Prepare_ReturnFromInt13hWithInvalidFunctionError
44
45 mov ah, COMMAND_SEEK
46 mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRDY)
47%ifdef USE_186
48 push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
49 jmp Idepack_ConvertDapToIdepackAndIssueCommandFromAH
50%else
51 call Idepack_ConvertDapToIdepackAndIssueCommandFromAH
52 jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
53%endif
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