source: xtideuniversalbios/trunk/BIOS_Drive_Information_Tool/Src/Bios.asm@ 594

Last change on this file since 594 was 589, checked in by Krister Nordvall, 9 years ago

Changes:

  • BIOS: Fixed a purely cosmetic bug from r542 where, in builds containing MODULE_EBIOS, the boot menu would display an incorrect drive size (0.4 kB with MODULE_STRINGS_COMPRESSED or 0.5 kB without) for old drives with no support for LBA.
  • Fixed a bug from r392 where Vision_DetectAndReturnIDinAXandPortInDXifControllerPresent would return the ID in AL instead of AH (if DANGEROUS_DETECTION had been defined).
  • Fixed a bug from r587 in AdvAtaInit.asm that would prevent detection of QDI Vision controllers.
  • Also changed how the QDI Vision IDs are defined (removed the need for shifting) to avoid confusion. This fixed a potential bug from r587 in AdvAtaInit.asm where some IDs were not being shifted.
  • Fixed a bug in PDC20x30.asm from r587 where GetPdcIDtoAX would not return with the IDE base port in DX so DisablePdcProgrammingMode would fail.
  • Made some changes to ModuleDependency.inc and other files so that MODULE_ADVANCED_ATA now requires USE_386. Consequently it is no longer included in the regular AT-builds, only in the 386_8k-build.
  • Moved the UNROLL_SECTORS_IN_CX_TO_xWORDS macros from IDE_8bit.inc to IdeIO.inc which means it's now possible to build a BIOS without MODULE_8BIT_IDE.
  • XTIDECFG: Added a minimum DOS version check (since it needs DOS version 2+) to allow the program to quit gracefully in the unlikely scenario where someone tries to run it under DOS version 1.
  • Made some changes to Drive.asm to improve drive enumeration. The old method using GET_DOS_DRIVE_PARAMETER_BLOCK_FOR_SPECIFIC_DRIVE worked well in Windows XP but not in Windows 98 SE (in Windows or in DOS mode). The two problems were; 1) The function call would access the drives which on single floppy drive systems would cause Windows to swap between A: and B: (throwing a blue screen asking the user to insert a disk etc). 2) Only floppy drives and FAT16 drives would be available in the list of drives, no FAT32/optical/network drives.
  • Improved code in IdeControllerMenu.asm so that the default port addresses for all IDE interfaces are now restored when (re-)selecting the (same) type of IDE device.
  • Also made it impossible to select a device type unless the required module is included in the loaded BIOS.
  • The version check done when loading a BIOS now uses the FLASH_SIGNATURE definition from Version.inc. Any changes affecting RomVars now only requires updating that definition. This means that changes to RomVars must be implemented in both the BIOS and XTIDECFG before being committed to the repository.
  • Added a compatibility fix for 3Com 3C503 cards to the ROM checksumming code in Buffers.asm (Buffers_GenerateChecksum).
  • SerDrive: Made some minor changes to file names and paths to improve compatibility with case sensitive environments.
  • BIOSDRVS: Made a minor size optimization which as a side effect also makes it compatible with all DOS versions including DOS version 1.
  • Library: Renamed the WAIT_RETRACE_IF_NECESSARY_THEN macro to CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN and made a tail-call-optimized version of it (JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN).
  • A speed optimization to the eRCL_IM macro for 386 and higher. This change breaks emulation in the sense that the macro will fail when given a memory operand as the first parameter.
  • Other minor optimizations and fixes.
File size: 6.0 KB
RevLine 
[327]1; Project name : BIOS Drive Information Tool
2; Description : Functions to read information from BIOS.
3
[376]4;
[526]5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
[376]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.
[526]12;
[376]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
[526]16; GNU General Public License for more details.
[376]17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
[327]19
20; Section containing code
21SECTION .text
22
23;---------------------------------------------------------------------
24; Bios_GetNumberOfHardDrivesToDX
25; Parameters:
26; Nothing
27; Returns: (if no errors)
[566]28; DX: Number of hard drives in system
[327]29; CF: Set if no hard drives found
30; Corrupts registers:
31; AX, BX, CX
32;--------------------------------------------------------------------
33Bios_GetNumberOfHardDrivesToDX:
34 mov dl, 80h ; First hard drive
35 mov ah, GET_DRIVE_PARAMETERS
36 int BIOS_DISK_INTERRUPT_13h
37 mov dh, 0 ; Preserve CF
38 ret
39
40
41;---------------------------------------------------------------------
42; Bios_ReadOldInt13hParametersFromDriveDL
43; Parameters:
44; DL: BIOS drive number
45; Returns: (if no errors)
[566]46; BL: Drive Type (for floppies only)
[327]47; AX: Sectors per track (1...63)
48; DX: Number of heads (1...255)
49; CX: Number of cylinders (1...1024)
50; CF: Cleared = no errors
51; Set = BIOS error code stored in AH
52; Corrupts registers:
53; Nothing
54;--------------------------------------------------------------------
55Bios_ReadOldInt13hParametersFromDriveDL:
56 mov ah, GET_DRIVE_PARAMETERS
57 int BIOS_DISK_INTERRUPT_13h
58 jc SHORT ReturnWithBiosErrorCodeInAH
59 ; Fall to ExtractCHSfromOldInt13hDriveParameters
60
61;---------------------------------------------------------------------
62; ExtractCHSfromOldInt13hDriveParameters
63; Parameters:
64; CH: Maximum cylinder number, bits 7...0
65; CL: Bits 7...6: Maximum cylinder number, bits 9 and 8
66; Bits 5...0: Maximum sector number (1...63)
67; DH: Maximum head number (0...254)
68; Returns:
[566]69; BL: Drive Type (for floppies only)
[327]70; AX: Sectors per track (1...63)
71; DX: Number of heads (1...255)
72; CX: Number of cylinders (1...1024)
73; CF: Cleared
74; Corrupts registers:
75; Nothing
76;--------------------------------------------------------------------
77ExtractCHSfromOldInt13hDriveParameters:
78 mov al, cl ; Copy sector number...
79 and ax, BYTE 3Fh ; ...and limit to 1...63
80 sub cl, al ; Remove from max cylinder high
81 eROL_IM cl, 2 ; High bits to beginning
82 eMOVZX dx, dh ; Copy Max head to DX
83 xchg cl, ch ; Max cylinder now in CX
84 inc cx ; Max cylinder to number of cylinders
85 inc dx ; Max head to number of heads
86 clc ; No errors
87 ret
88
89
90;---------------------------------------------------------------------
91; Bios_ReadOldInt13hCapacityFromDriveDL
92; Parameters:
93; DL: BIOS drive number
94; Returns: (if no errors)
[566]95; CX:DX: Total number of sectors
96; AH: BIOS Error code
[327]97; CF: Cleared = no errors
98; Set = BIOS error code stored in AH
99; Corrupts registers:
100; Nothing
101;--------------------------------------------------------------------
102Bios_ReadOldInt13hCapacityFromDriveDL:
103 mov ah, GET_DISK_TYPE
104 int BIOS_DISK_INTERRUPT_13h
105 jc SHORT ReturnInvalidErrorCodeInAH
106 xor ah, ah
107 ret
108
109
110;---------------------------------------------------------------------
111; Bios_ReadAtaInfoFromDriveDLtoBX
112; Parameters:
113; DL: BIOS drive number
114; Returns: (if no errors)
[566]115; DS:BX: Ptr to ATA information
116; AH: BIOS Error code
[327]117; CF: Cleared = no errors
118; Set = BIOS error code stored in AH
119; Corrupts registers:
120; ES
121;--------------------------------------------------------------------
122Bios_ReadAtaInfoFromDriveDLtoBX:
123 mov bx, g_rgbAtaInfo
124 push ds
125 pop es
126 mov ah, GET_DRIVE_INFORMATION
127 int BIOS_DISK_INTERRUPT_13h
128 ret
129
130
131;---------------------------------------------------------------------
132; Bios_ReadEbiosVersionFromDriveDL
133; Parameters:
134; DL: BIOS drive number
135; Returns:
136; AH: BIOS error code
[566]137; BX: Version of extensions
[327]138; CX: Interface support bit map
139; CF: Cleared = no errors
140; Set = BIOS error code stored in AH
141; Corrupts registers:
142; Nothing
143;--------------------------------------------------------------------
144Bios_ReadEbiosVersionFromDriveDL:
145 mov ah, CHECK_EXTENSIONS_PRESENT
146 mov bx, 55AAh
147 int BIOS_DISK_INTERRUPT_13h
[589]148 jc SHORT ReturnInvalidErrorCodeInAH ; No EBIOS present
149 xor bx, 0AA55h
150 jnz SHORT ReturnInvalidErrorCodeInAH ; No EBIOS present
151 xchg bl, ah ; Version to BX, BIOS error code to AH
[327]152 ret
153
154
155;---------------------------------------------------------------------
156; Bios_ReadEbiosInfoFromDriveDLtoDSSI
157; Parameters:
158; DL: BIOS drive number
159; Returns: (if no errors)
[566]160; DS:SI: Ptr to EDRIVE_INFO
161; AH: BIOS Error code
[327]162; CF: Cleared = no errors
163; Set = BIOS error code stored in AH
164; Corrupts registers:
165; Nothing
166;--------------------------------------------------------------------
167Bios_ReadEbiosInfoFromDriveDLtoDSSI:
168 mov si, g_edriveInfo
169 mov WORD [si+EDRIVE_INFO.wSize], MINIMUM_EDRIVEINFO_SIZE
170 mov ah, GET_EXTENDED_DRIVE_INFORMATION
171 int BIOS_DISK_INTERRUPT_13h
172 ret
173
174
175;---------------------------------------------------------------------
176; ReturnInvalidErrorCodeInAH
177; ReturnWithBiosErrorCodeInAH
178; Parameters:
179; Nothing
180; Returns: (if no errors)
[566]181; AH: BIOS Error code
[327]182; CF: Set
183; Corrupts registers:
184; Nothing
185;--------------------------------------------------------------------
186ReturnInvalidErrorCodeInAH:
187 stc
[526]188 mov ah, RET_HD_INVALID
[327]189ReturnWithBiosErrorCodeInAH:
190 ret
191
192
193; Section containing uninitialized data
194SECTION .bss
195
196g_edriveInfo:
197g_rgbAtaInfo: resb 512
Note: See TracBrowser for help on using the repository browser.