source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDmaTransfer.asm@ 474

Last change on this file since 474 was 474, checked in by aitotat@…, 12 years ago

Changes to XTIDE Universal BIOS:

  • Drive detection now displays autodetected XT-CF port and skips slave drives for XT-CF.
  • AH=1Eh no longer tries to disable 8-bit mode for memory mapped and DMA transfer modes.
  • Preparations to implement DMA.
File size: 1.7 KB
RevLine 
[474]1; Project name : XTIDE Universal BIOS
2; Description : IDE Device DMA transfer functions.
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; Structure containing variables for DMA transfer functions.
21; This struct must not be larger than IDEPACK without INTPACK.
22struc DMAVARS ; Must not be larger than 9 bytes! See IDEPACK in RamVars.inc.
23endstruc
24
25
26; Section containing code
27SECTION .text
28
29;--------------------------------------------------------------------
30; IdeDmaTransfer_StartWithCommandInAL
31; Parameters:
32; AL: IDE command that was used to start the transfer
33; (all PIO read and write commands including Identify Device)
34; ES:SI: Ptr to normalized data buffer
35; DS:DI: Ptr to DPT (in RAMVARS segment)
36; SS:BP: Ptr to IDEPACK
37; Returns:
38; AH: INT 13h Error Code
39; CX: Number of successfully transferred sectors
40; CF: Cleared if success, Set if error
41; Corrupts registers:
42; AL, BX, DX, SI, ES
43;--------------------------------------------------------------------
44ALIGN JUMP_ALIGN
45IdeDmaTransfer_StartWithCommandInAL:
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