source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc@ 209

Last change on this file since 209 was 203, checked in by gregli@…, 13 years ago

Reworked the 'skip detecting the slave if there was no master' code to be more complete (includes configurator drives) and to take into account int13h/25h calls. Some of the changes in my last checkin have been rolled back as a result (they are no longer needed). I did take a byte out of RAMVARS, but there was an alignment byte available for the taking. I also added a perl script for padding and adding the checksum byte to a binary image, which can be invoked manually or with 'make checksum'.
File size: 6.5 KB
RevLine 
[90]1; Project name : XTIDE Universal BIOS
[3]2; Description : Defines for ROMVARS struct containing variables stored
3; in BIOS ROM.
4%ifndef ROMVARS_INC
5%define ROMVARS_INC
6
[181]7; ROM Variables. Written to the ROM image before flashing.
[3]8struc ROMVARS
[181]9 .wRomSign resb 2 ; ROM Signature (AA55h)
10 .bRomSize resb 1 ; ROM size in 512 byte blocks
11 .rgbJump resb 3 ; First instruction to ROM init (jmp)
[90]12
[181]13 .rgbSign resb 8 ; Signature for XTIDE Configurator Program
14 .szTitle resb 31 ; BIOS title string
15 .szVersion resb 25 ; BIOS version string
[90]16
[181]17 .wFlags resb 2 ; Word for ROM flags
18 .wDisplayMode resb 2 ; Display mode for boot menu
19 .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks
20 .bIdeCnt resb 1 ; Number of available IDE controllers
21 .bBootDrv resb 1 ; Boot Menu default drive
22 .bMinFddCnt resb 1 ; Minimum number of Floppy Drives
23 .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM
[90]24
[181]25 .ideVars0 resb IDEVARS_size
26 .ideVars1 resb IDEVARS_size
27 .ideVars2 resb IDEVARS_size
28 .ideVars3 resb IDEVARS_size
[175]29
[176]30%ifdef MODULE_SERIAL
[175]31 .ideVarsSerialAuto resb IDEVARS_size
[176]32%endif
[3]33endstruc
34
35; Bit defines for ROMVARS.wFlags
[199]36FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.)
37FLG_ROMVARS_DRVXLAT EQU (1<<2) ; Enable drive number translation
38FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked
39 ; by holding down the ALT key at the end of drive detection.
40 ; (Conveniently, this is 8, a fact we exploit when testing the bit)
41FLG_ROMVARS_MODULE_SERIAL EQU (1<<6) ; Here in case the configuration needs to know functionality is present
42FLG_ROMVARS_MODULE_EBIOS EQU (1<<7) ; Here in case the configuration needs to know functionality is present
[176]43
[143]44; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
45DEFAULT_TEXT_MODE EQU 4
[3]46
[143]47
[3]48; Controller specific variables
49struc IDEVARS
[196]50 .wPort: ; IDE Base Port for Command Block (usual) Registers
51 .bSerialCOMDigit resb 1 ; Serial Device COM Port digit
52 .bSerialPackedPortAndBaud resb 1 ; Serial Device packed port and baud
53
54 .wPortCtrl: ; IDE Base Port for Control Block Registers
55 .wSerialPackedPrintBaud resb 2 ; Serial Device packed baud rate for printing
56
57 .bDevice resb 1 ; Device type
58 .bIRQ resb 1 ; Interrupt Request Number
59 .drvParamsMaster resb DRVPARAMS_size
60 .drvParamsSlave resb DRVPARAMS_size
[3]61endstruc
62
[199]63; Default values for Port and PortCtrl, shared with the configurator
64;
65DEVICE_XTIDE_DEFAULT_PORT EQU 300h
66DEVICE_XTIDE_DEFAULT_PORTCTRL EQU 308h
67DEVICE_ATA_DEFAULT_PORT EQU 1F0h
68DEVICE_ATA_DEFAULT_PORTCTRL EQU 3F0h
69DEVICE_SERIAL_DEFAULT_COM EQU 0 ; COM1
70DEVICE_SERIAL_DEFAULT_BAUD EQU 1 ; 9600
71
[175]72; Device types for IDEVARS.bDevice
[199]73;
[150]74DEVICE_8BIT_DUAL_PORT_XTIDE EQU (0<<1)
75DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0 EQU (1<<1)
76DEVICE_8BIT_SINGLE_PORT EQU (2<<1)
77DEVICE_16BIT_ATA EQU (3<<1)
78DEVICE_32BIT_ATA EQU (4<<1)
79DEVICE_SERIAL_PORT EQU (5<<1)
[3]80
[199]81
[3]82; Master/Slave drive specific parameters
83struc DRVPARAMS
84 .wFlags resb 2 ; Drive flags
85 .wCylinders resb 2 ; User specified cylinders (1...16383)
[99]86 .wHeadsAndSectors:
87 .bHeads resb 1 ; User specified Heads (1...16)
[3]88 .bSect resb 1 ; User specified Sectors per track (1...63)
89endstruc
90
91; Bit defines for DRVPARAMS.wFlags
92FLG_DRVPARAMS_USERCHS EQU (1<<0) ; User specified P-CHS values
93FLG_DRVPARAMS_BLOCKMODE EQU (1<<1) ; Enable Block mode transfers
94
95
[199]96; Defines for IDEVARS.bSerialPackedPortAndBaud (same format used by DPT.bSerialPortAndBaud)
97;
98; pppp ppbb
99; i/o port address = p * 2 + 240h
100; baud rate = b, where 00 = 2400, 01 = 9600, 10 = 38.4K, 11 = 115.2K
101;
[203]102; 240h/2400baud corresponds to 0 for a PackedPortAndBaud value, which triggers auto detect code.
103; Which means 240h is not usable, and is why ..._MINPORT is 248h. A value is reserved at the upper
104; end of the spectrum in case it is needed (whcih is why it is 430h instead of 438h).
[200]105;
106DEVICE_SERIAL_PACKEDPORTANDBAUD_PORTMASK EQU 0fch
107DEVICE_SERIAL_PACKEDPORTANDBAUD_PORTBITS EQU 03fh
108DEVICE_SERIAL_PACKEDPORTANDBAUD_PORT_FIELD_POSITION EQU 2
109DEVICE_SERIAL_PACKEDPORTANDBAUD_STARTINGPORT EQU 240h
[203]110DEVICE_SERIAL_PACKEDPORTANDBAUD_MINPORT EQU 248h ; minimum port value that the user can set
111DEVICE_SERIAL_PACKEDPORTANDBAUD_MAXPORT EQU 430h ; or ((..._PORTMASK-1) << 1) + ..._STARTINGPORT
[199]112
[200]113DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUDMASK EQU 3h
114DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUDBITS EQU 3h
115DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUD_FIELD_POSITION EQU 0
116
[199]117; Defines for IDEVARS.wSerialPrintBaud
118;
119; pppp ppnn nnnn nnnn
120; unsigned number to output = n
121; postfix character = p + '0' (designed for '0' and 'K', although other values are possible)
122;
123; Note that the contents of this word is only used for printing by the BIOS when a drive is detected.
124; It is not used for any other purpose, and so long as it conforms to the structure, any values can be used.
125;
126DEVICE_SERIAL_PRINTBAUD_NUMBERMASK EQU 003ffh
127DEVICE_SERIAL_PRINTBAUD_POSTCHARMASK EQU 0fc00h
128DEVICE_SERIAL_PRINTBAUD_POSTCHARADD EQU '0'
129;
130; These are defined here (instead of in the configurator) for consistency since they could also be used
131; in main.asm as a default for an IDEVARS structure.
132;
133DEVICE_SERIAL_PRINTBAUD_2400 EQU ((('0'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 240) ; Prints "2400"
134DEVICE_SERIAL_PRINTBAUD_9600 EQU ((('0'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 960) ; Prints "9600"
135DEVICE_SERIAL_PRINTBAUD_38_4 EQU ((('K'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 38) ; Prints "38K"
136DEVICE_SERIAL_PRINTBAUD_115_2 EQU ((('K'-DEVICE_SERIAL_PRINTBAUD_POSTCHARADD)<<10) | 115) ; Prints "115K"
137
138;
139; COM Number to I/O Port Address Mapping
140;
141; COM Number: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
142; Corresponds to I/O port: 3f8, 2f8, 3e8, 2e8, 2f0, 3e0, 2e0, 260, 368, 268, 360, 270
143; Corresponds to Packed I/O port (hex): 37, 17, 35, 15, 16, 34, 14, 4, 25, 5, 24, 6
144;
145DEVICE_SERIAL_COM1 EQU 3f8h
146DEVICE_SERIAL_COM2 EQU 2f8h
147DEVICE_SERIAL_COM3 EQU 3e8h
148DEVICE_SERIAL_COM4 EQU 2e8h
149DEVICE_SERIAL_COM5 EQU 2f0h
150DEVICE_SERIAL_COM6 EQU 3e0h
151DEVICE_SERIAL_COM7 EQU 2e0h
152DEVICE_SERIAL_COM8 EQU 260h
153DEVICE_SERIAL_COM9 EQU 368h
154DEVICE_SERIAL_COMA EQU 268h
155DEVICE_SERIAL_COMB EQU 360h
156DEVICE_SERIAL_COMC EQU 270h
157
158
[3]159%endif ; ROMVARS_INC
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