source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/EBIOS.inc@ 376

Last change on this file since 376 was 376, checked in by gregli@…, 12 years ago

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1; Project name : XTIDE Universal BIOS
2; Description : Equates used in Enhanced INT 13h functions (EBIOS).
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%ifndef EBIOS_INC
21%define EBIOS_INC
22
23; EBIOS specification returned by INT 13h, AH=41h
24EBIOS_VERSION EQU 21h ; 21h = EDD version 1.1
25
26; Support bits returned by INT 13h, AH=41h
27ENHANCED_DRIVE_ACCESS_SUPPORT EQU (1<<0) ; 41h, 42h, 43h 44h, 47h and 48h are available
28DRIVE_LOCKING_AND_EJECTING_SUPPORT EQU (1<<1) ; 41h, 45h, 46h, 48h, 49h are available and INT 15h, AH=52h
29ENHANCED_DISK_DRIVE_SUPPORT EQU (1<<2) ; 41h, 48h, 4Eh are available (EDD)
30
31
32; Extended Drive Information returned by AH=48h
33struc EDRIVE_INFO
34 .wSize resb 2 ; 0, Size of this buffer, at least 26
35 .wFlags resb 2 ; 2, Information flags
36 .dwCylinders resb 4 ; 4, Total number of addressable cylinders
37 .dwHeads resb 4 ; 8, Total number of addressable heads
38 .dwSectorsPerTrack resb 4 ; 12, Number of sectors per track
39 .qwTotalSectors resb 8 ; 16, Total number of addressable sectors
40 .wSectorSize resb 2 ; 24, Number of bytes per sector
41 .fpEDDparams resb 8 ; 26, Optional pointer to Enhanced Disk Drive (EDD) configuration parameters
42endstruc
43
44MINIMUM_EDRIVEINFO_SIZE EQU 26 ; 26 bytes does not include EDD pointer
45
46; Flags for EDRIVE_INFO.wFlags
47FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS EQU (1<<0)
48FLG_CHS_INFORMATION_IS_VALID EQU (1<<1)
49FLG_REMOVABLE_DRIVE EQU (1<<2)
50FLG_WRITE_WITH_VERIFY_SUPPORTED EQU (1<<3)
51FLG_CHANGE_LINE_SUPPORT EQU (1<<4) ; Removable media only
52FLG_LOCKABLE EQU (1<<5) ; Removable media only
53FLG_NO_MEDIA_PRESENT_AND_CHS_SET_TO_MAX EQU (1<<6) ; Removable media only
54
55
56; Disk Address Packet for read, write and verify functions
57struc DAP
58 .bSize resb 1 ; 0, Size of this packet in bytes
59 .bReservedAt1 resb 1 ; 1, Currently unused, must be zero
60 .wSectorCount resb 2 ; 2, Number of sectors to process (0...127)
61 .dwMemoryAddress:
62 .wOffset resb 2 ; 4, Memory offset for transfer
63 .wSegment resb 2 ; 6, Memory segment for transfer
64 .qwLBA resb 8 ; 8, Starting sector for transfer
65endstruc
66
67MINIMUM_DAP_SIZE EQU 16
68
69
70%endif ; EBIOS_INC
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