source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Main.asm@ 75

Last change on this file since 75 was 61, checked in by Tomi Tilli, 14 years ago

Changes to XTIDE Universal BIOS:

  • AA55h signature no longer required when booting from floppy drives. This should make booter games work.
File size: 8.7 KB
Line 
1; File name : Main.asm
2; Project name : XTIDE Universal BIOS
3; Created date : 28.7.2007
4; Last update : 28.11.2010
5; Author : Tomi Tilli
6; Description : Main file for BIOS. This is the only file that needs
7; to be compiled since other files are included to this
8; file (so no linker needed, Nasm does it all).
9;
10; Tomi Tilli
11; aitotat@gmail.com
12
13ORG 000h ; Code start offset 0000h
14
15; Included .inc files
16%include "emulate.inc" ; Must be included first!
17%include "BiosData.inc" ; For BIOS Data area equates
18%include "Interrupts.inc" ; For interrupt equates
19%include "ATA_ID.inc" ; For ATA Drive Information structs
20%include "IdeRegisters.inc" ; For ATA Registers, flags and commands
21%include "Int13h.inc" ; Equates for INT 13h functions
22%include "CustomDPT.inc" ; For Disk Parameter Table
23%include "CompatibleDPT.inc" ; For standard Disk Parameter Tables
24%include "RomVars.inc" ; For ROMVARS and IDEVARS structs
25%include "RamVars.inc" ; For RAMVARS struct
26%include "BootVars.inc" ; For BOOTVARS and BOOTNFO structs
27%include "BootMenu.inc" ; For Boot Menu
28%include "IDE_8bit.inc" ; For IDE 8-bit data port macros
29
30
31; Section containing code
32SECTION .text
33
34; ROM variables (must start at offset 0)
35CNT_ROM_BLOCKS EQU 16 ; 16 * 512B = 8kB BIOS
36istruc ROMVARS
37 at ROMVARS.wRomSign, dw 0AA55h ; PC ROM signature
38 at ROMVARS.bRomSize, db CNT_ROM_BLOCKS ; ROM size in 512B blocks
39 at ROMVARS.rgbJump, jmp Initialize_FromMainBiosRomSearch
40 at ROMVARS.rgbDate, db "11/28/10" ; Build data (mm/dd/yy)
41 at ROMVARS.rgbSign, db "XTIDE110" ; Signature for flash program
42 at ROMVARS.szTitle
43 db "-=XTIDE Universal BIOS"
44%ifdef USE_AT
45 db " (AT)=-",STOP
46%elifdef USE_186
47 db " (XT+)=-",STOP
48%else
49 db " (XT)=-",STOP
50%endif
51 at ROMVARS.szVersion, db "v1.1.5 (11/28/10)",STOP
52
53;---------------------------;
54; AT Build default settings ;
55;---------------------------;
56%ifdef USE_AT
57 at ROMVARS.wFlags, dw FLG_ROMVARS_FULLMODE | FLG_ROMVARS_DRVXLAT | FLG_ROMVARS_DRVNFO | FLG_ROMVARS_MAXSIZE
58 at ROMVARS.bIdeCnt, db 3 ; Number of supported controllers
59 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
60 at ROMVARS.bBootMnuH, db 20 ; Boot Menu maximum height
61 at ROMVARS.bBootDelay, db 30 ; Boot Menu selection delay (secs)
62 at ROMVARS.bBootLdrType, db BOOTLOADER_TYPE_MENU ; Boot loader type
63 at ROMVARS.bMinFddCnt, db 0 ; Do not force minimum number of floppy drives
64 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory
65
66 at ROMVARS.ideVars0+IDEVARS.wPort, dw 1F0h ; Controller Command Block base port
67 at ROMVARS.ideVars0+IDEVARS.wPortCtrl, dw 3F0h ; Controller Control Block base port
68 at ROMVARS.ideVars0+IDEVARS.bBusType, db BUS_TYPE_16 ; Bus type
69 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 14 ; IRQ
70 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
71 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
72
73 at ROMVARS.ideVars1+IDEVARS.wPort, dw 170h ; Controller Command Block base port
74 at ROMVARS.ideVars1+IDEVARS.wPortCtrl, dw 370h ; Controller Control Block base port
75 at ROMVARS.ideVars1+IDEVARS.bBusType, db BUS_TYPE_16 ; Bus type
76 at ROMVARS.ideVars1+IDEVARS.bIRQ, db 15 ; IRQ
77 at ROMVARS.ideVars1+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
78 at ROMVARS.ideVars1+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
79
80 at ROMVARS.ideVars2+IDEVARS.wPort, dw 300h ; Controller Command Block base port
81 at ROMVARS.ideVars2+IDEVARS.wPortCtrl, dw 308h ; Controller Control Block base port
82 at ROMVARS.ideVars2+IDEVARS.bBusType, db BUS_TYPE_8_DUAL ; Bus type
83 at ROMVARS.ideVars2+IDEVARS.bIRQ, db 0 ; IRQ
84 at ROMVARS.ideVars2+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
85 at ROMVARS.ideVars2+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
86%else
87;-----------------------------------;
88; XT and XT+ Build default settings ;
89;-----------------------------------;
90 at ROMVARS.wFlags, dw FLG_ROMVARS_LATE | FLG_ROMVARS_DRVXLAT | FLG_ROMVARS_ROMBOOT | FLG_ROMVARS_DRVNFO | FLG_ROMVARS_MAXSIZE
91 at ROMVARS.bIdeCnt, db 1 ; Number of supported controllers
92 at ROMVARS.bBootDrv, db 80h ; Boot Menu default drive
93 at ROMVARS.bBootMnuH, db 20 ; Boot Menu maximum height
94 at ROMVARS.bBootDelay, db 30 ; Boot Menu selection delay (secs)
95 at ROMVARS.bBootLdrType, db BOOTLOADER_TYPE_MENU ; Boot loader type
96 at ROMVARS.bMinFddCnt, db 1 ; Assume at least 1 floppy drive present if autodetect fails
97 at ROMVARS.bStealSize, db 1 ; Steal 1kB from base memory in full mode
98
99 at ROMVARS.ideVars0+IDEVARS.wPort, dw 300h ; Controller Command Block base port
100 at ROMVARS.ideVars0+IDEVARS.wPortCtrl, dw 308h ; Controller Control Block base port
101 at ROMVARS.ideVars0+IDEVARS.bBusType, db BUS_TYPE_8_DUAL ; Bus type
102 at ROMVARS.ideVars0+IDEVARS.bIRQ, db 0 ; IRQ
103 at ROMVARS.ideVars0+IDEVARS.drvParamsMaster+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
104 at ROMVARS.ideVars0+IDEVARS.drvParamsSlave+DRVPARAMS.wFlags, db FLG_DRVPARAMS_BLOCKMODE
105%endif
106iend
107
108
109; Include .asm files (static data and libraries)
110%include "Strings.asm" ; For BIOS message strings
111%include "math.asm" ; For Math library
112%include "string.asm" ; For String library
113%include "print.asm" ; For Print library
114%include "keys.asm" ; For keyboard library (required by menu library)
115%include "menu.asm" ; For menu library
116%include "PrintString.asm" ; Customized printing for this BIOS
117%include "SoftDelay.asm" ; For software delay loops
118
119; Include .asm files (Initialization and drive detection)
120%include "Initialize.asm" ; For BIOS initialization
121%include "Interrupts.asm" ; For Interrupt initialization
122%include "RamVars.asm" ; For RAMVARS initialization and access
123%include "CreateDPT.asm" ; For creating DPTs
124%include "FindDPT.asm" ; For finding DPTs
125%include "AccessDPT.asm" ; For accessing DPTs
126%include "CompatibleDPT.asm" ; For creating compatible DPTs
127%include "BootInfo.asm" ; For creating BOOTNFO structs
128%include "AtaID.asm" ; For ATA Identify Device information
129%include "DetectDrives.asm" ; For detecting IDE drives
130%include "DetectPrint.asm" ; For printing drive detection strings
131
132; Include .asm files (boot menu)
133%include "BootVars.asm" ; For accessing BOOTVARS struct
134%include "BootMenu.asm" ; For Boot Menu operations
135%include "BootMenuEvent.asm" ; For menu library event handling
136%include "FloppyDrive.asm" ; Floppy Drive related functions
137%include "BootMenuPrint.asm" ; For printing Boot Menu strings
138%include "BootMenuPrintCfg.asm" ; For printing hard disk configuration
139
140; Include .asm files (general drive accessing)
141%include "DriveXlate.asm" ; For swapping drive numbers
142%include "HAddress.asm" ; For sector address translations
143%include "HCapacity.asm" ; For calculating drive capacity
144%include "HError.asm" ; For error checking
145%include "HPIO.asm" ; For PIO transfers
146%include "HIRQ.asm" ; For IRQ handling
147%include "HStatus.asm" ; For reading hard disk status
148%include "HDrvSel.asm" ; For selecting drive to access
149%include "HCommand.asm" ; For outputting command and parameters
150
151; Include .asm files (Interrupt handlers)
152%include "Int13h.asm" ; For Int 13h, Disk functions
153%include "Int18h.asm" ; For Int 18h, ROM Boot and Boot error
154%include "Int19h.asm" ; For Int 19h, Boot Loader
155%include "Int19hMenu.asm" ; For Int 19h, Boot Loader for Boot Menu
156%include "BootPrint.asm" ; For printing boot information
157
158; Include .asm files (Hard Disk BIOS functions)
159%include "AH0h_HReset.asm" ; Required by Int13h_Jump.asm
160%include "AH1h_HStatus.asm" ; Required by Int13h_Jump.asm
161%include "AH2h_HRead.asm" ; Required by Int13h_Jump.asm
162%include "AH3h_HWrite.asm" ; Required by Int13h_Jump.asm
163%include "AH4h_HVerify.asm" ; Required by Int13h_Jump.asm
164%include "AH5h_HFormat.asm" ; Required by Int13h_Jump.asm
165%include "AH8h_HParams.asm" ; Required by Int13h_Jump.asm
166%include "AH9h_HInit.asm" ; Required by Int13h_Jump.asm
167%include "AHCh_HSeek.asm" ; Required by Int13h_Jump.asm
168%include "AHDh_HReset.asm" ; Required by Int13h_Jump.asm
169%include "AH10h_HReady.asm" ; Required by Int13h_Jump.asm
170%include "AH11h_HRecal.asm" ; Required by Int13h_Jump.asm
171%include "AH14h_HDiag.asm" ; Required by Int13h_Jump.asm
172%include "AH15h_HSize.asm" ; Required by Int13h_Jump.asm
173%include "AH23h_HFeatures.asm" ; Required by Int13h_Jump.asm
174%include "AH24h_HSetBlocks.asm" ; Required by Int13h_Jump.asm
175%include "AH25h_HDrvID.asm" ; Required by Int13h_Jump.asm
176
177
178
179; Fill with zeroes until size is what we want
180times (CNT_ROM_BLOCKS*512)-($-$$) db 0
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