source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc @ 472

Last change on this file since 472 was 472, checked in by aitotat@…, 12 years ago

Changes to XTIDE Universal BIOS:

  • Implemented AH=1Eh, XT-CF Features.
File size: 5.3 KB
Line 
1; Project name  :   XTIDE Universal BIOS
2; Description   :   Defines for DPT structs containing custom
3;                   Disk Parameter Table used by this BIOS.
4
5;
6; XTIDE Universal BIOS and Associated Tools
7; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
8;
9; This program is free software; you can redistribute it and/or modify
10; it under the terms of the GNU General Public License as published by
11; the Free Software Foundation; either version 2 of the License, or
12; (at your option) any later version.
13;
14; This program is distributed in the hope that it will be useful,
15; but WITHOUT ANY WARRANTY; without even the implied warranty of
16; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17; GNU General Public License for more details.
18; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
19;
20
21%ifndef CUSTOMDPT_INC
22%define CUSTOMDPT_INC
23
24; Base DPT for all device types
25struc DPT
26    ; General Disk Parameter Table related (Bytes 0...3)
27    .wFlags:
28    .bFlagsLow              resb    1
29    .bFlagsHigh             resb    1
30    .bIdevarsOffset         resb    1   ; Offset to IDEVARS for this drive
31    .bInitError             resb    1   ; Flags for AH=09h initialization errors
32
33    ; CHS variables (Bytes 4...8)
34    .wLchsCylinders         resb    2   ; (1...1027, yes 1027)
35    .wLchsHeadsAndSectors:
36    .bLchsHeads             resb    1   ; (1...255)
37    .bLchsSectorsPerTrack   resb    1   ; (1...63)
38    .bPchsHeads             resb    1   ; (1...16)
39
40    ; LBA and remaining P-CHS variables
41%ifdef MODULE_EBIOS
42    .bPchsSectorsPerTrack   resb    1
43    .wPchsCylinders         resb    2
44    .twLbaSectors           resb    6   ; 48-bit sector count for LBA addressing
45%endif
46
47%ifdef MODULE_8BIT_IDE
48    .wXTCFport              resb    2   ; Autodetected XT-CF port
49%endif
50                            alignb  2   ; WORD alignent for DPT_SERIAL or DPT_ATA
51endstruc
52
53    ; Bit definitions for DPT.bFlagsLow
54    MASKL_DPT_CHS_SHIFT_COUNT           EQU (3<<0)              ; Bits 0...1, P-CHS to L-CHS bit shift count (0...3)
55    MASKL_DPT_TRANSLATEMODE             EQU MASK_DRVPARAMS_TRANSLATEMODE    ; Bits 2...3, NORMAL, LARGE or Assisted LBA addressing mode
56    FLGL_DPT_ASSISTED_LBA               EQU (1<<(TRANSLATEMODE_FIELD_POSITION+1))
57    FLGL_DPT_SLAVE                      EQU FLG_DRVNHEAD_DRV    ; Bit 4, Drive is a Slave Drive
58%ifdef MODULE_IRQ
59    FLGL_DPT_ENABLE_IRQ                 EQU (1<<5)              ; Bit 5, Enable IRQ
60%endif
61%ifdef MODULE_EBIOS
62    FLGL_DPT_LBA_AND_EBIOS_SUPPORTED    EQU FLG_DRVNHEAD_LBA    ; Bit 6, Drive supports LBA and so EBIOS functions can be supported
63    FLGL_DPT_LBA48                      EQU (1<<7)              ; Bit 7, Drive supports 48-bit LBA (Must be bit 7!)
64%endif
65
66
67    ; Bit definitions for DPT.bFlagsHigh
68    FLGH_DPT_BLOCK_MODE_SUPPORTED       EQU (1<<1)  ; Bit 1, Use block transfer commands (must be bit 1!)
69%ifdef MODULE_SERIAL
70    FLGH_DPT_SERIAL_DEVICE              EQU (1<<2)  ; Bit 2, Serial Port Device
71%endif
72%ifdef MODULE_IRQ
73    FLGH_DPT_INTERRUPT_IN_SERVICE       EQU (1<<3)  ; Bit 3, Set when waiting for IRQ
74%endif
75%ifdef MODULE_FEATURE_SETS
76    FLGH_DPT_POWER_MANAGEMENT_SUPPORTED EQU (1<<5)  ; Bit 4, Drive supports power management
77%endif
78%ifdef MODULE_ADVANCED_ATA
79    FLGH_DPT_IORDY                      EQU (1<<7)  ; Bit 5, Controller and Drive supports IORDY
80%endif
81
82    ; Serial device only
83%ifdef MODULE_SERIAL_FLOPPY
84    FLGH_DPT_SERIAL_FLOPPY                      EQU (1<<4)
85    FLGH_DPT_SERIAL_FLOPPY_TYPE_MASK            EQU 0e0h
86    FLGH_DPT_SERIAL_FLOPPY_TYPE_FIELD_POSITION  EQU 5
87%endif
88
89
90    ; Flags for DPT_ADVANCED_ATA.bInitError
91    FLG_INITERROR_FAILED_TO_SELECT_DRIVE                EQU (1<<0)
92    FLG_INITERROR_FAILED_TO_INITIALIZE_CHS_PARAMETERS   EQU (1<<1)
93    FLG_INITERROR_FAILED_TO_SET_WRITE_CACHE             EQU (1<<2)
94    FLG_INITERROR_FAILED_TO_RECALIBRATE_DRIVE           EQU (1<<3)
95    FLG_INITERROR_FAILED_TO_SET_BLOCK_MODE              EQU (1<<4)
96    FLG_INITERROR_FAILED_TO_SET_PIO_MODE                EQU (1<<5)
97    FLG_INITERROR_FAILED_TO_INITIALIZE_STANDBY_TIMER    EQU (1<<6)
98    FLG_INITERROR_FAILED_TO_ENABLE_8BIT_PIO_MODE        EQU (1<<7)
99
100
101
102; DPT for ATA devices
103struc DPT_ATA   ; 10/18 bytes + 2 bytes = 12/20 bytes
104    .dpt                    resb    DPT_size
105    .bBlockSize             resb    1   ; Current block size in sectors (do not set to zero!)
106    .bDevice                resb    1   ; Device Type from IDEVARS (overrided when 32-bit controller detected)
107endstruc
108
109
110
111; Additional variables needed to initialize and reset Advanced IDE Controllers.
112; EBDA must be reserved for DPTs when using these!
113%ifdef MODULE_ADVANCED_ATA
114struc DPT_ADVANCED_ATA  ; 12/20 bytes + 8 bytes = 20/28 bytes
115    .dpt_ata                resb    DPT_ATA_size
116    .wControllerID          resb    2   ; Controller specific ID WORD (from Advanced Controller detection)
117    .wControllerBasePort    resb    2   ; Advanced Controller port (not IDE port)
118    .wMinPioCycleTime       resb    2   ; Minimum PIO Cycle Time in ns
119    .bPioMode               resb    1   ; Best supported PIO mode
120                            alignb  2
121endstruc
122%endif
123
124
125; DPT for Serial devices
126%ifdef MODULE_SERIAL
127struc DPT_SERIAL    ; 8/18 bytes + 2 bytes = 10/20 bytes
128    .dpt                    resb    DPT_size
129    .wSerialPortAndBaud:
130    .bSerialPort            resb    1   ; Serial connection I/O port address, divided by 4
131    .bSerialBaud            resb    1   ; Serial connection baud rate divisor
132endstruc
133%endif
134
135
136; This is the common size for all DPTs. All DPTs must be equal size.
137%ifdef MODULE_ADVANCED_ATA
138    LARGEST_DPT_SIZE            EQU     DPT_ADVANCED_ATA_size
139%else
140    LARGEST_DPT_SIZE            EQU     DPT_ATA_size
141%endif
142
143
144    ; Number of Sectors per Track is fixed to 63 for LBA assist calculation.
145    ; 1024 cylinders, 256 heads, 63 sectors = 8.4 GB limit (but DOS does not support more than 255 heads)
146    MAX_LCHS_CYLINDERS          EQU     1024
147    LBA_ASSIST_SPT              EQU     63
148
149
150%endif ; CUSTOMDPT_INC
Note: See TracBrowser for help on using the repository browser.