source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc @ 178

Last change on this file since 178 was 178, checked in by krille_n_@…, 11 years ago
  • Removed an %ifdef in RomVars.inc that prevented XTIDECFG from building.
  • Size optimizations in MenuLoop.asm.
File size: 2.7 KB
Line 
1; Project name  :   XTIDE Universal BIOS
2; Description   :   Defines for ROMVARS struct containing variables stored
3;                   in BIOS ROM.
4%ifndef ROMVARS_INC
5%define ROMVARS_INC
6
7; ROM Variables. There are written to ROM image before flashing.
8struc ROMVARS
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)
12
13    .rgbSign        resb    8   ; Signature for XTIDE Configurator Program
14    .szTitle        resb    31  ; BIOS title string
15    .szVersion      resb    25  ; BIOS version string
16
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
24
25    .ideVars0       resb    IDEVARS_size
26    .ideVars1       resb    IDEVARS_size
27    .ideVars2       resb    IDEVARS_size
28    .ideVars3       resb    IDEVARS_size
29
30%ifdef MODULE_SERIAL
31    .ideVarsSerialAuto  resb    IDEVARS_size
32%endif
33endstruc
34
35; Bit defines for ROMVARS.wFlags
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
38
39%ifdef MODULE_SERIAL
40FLG_ROMVARS_MODULE_SERIAL   EQU (1<<3)
41%else
42FLG_ROMVARS_MODULE_SERIAL   EQU 0
43%endif
44
45%ifdef MODULE_EBIOS
46FLG_ROMVARS_MODULE_EBIOS    EQU (1<<4)
47%else
48FLG_ROMVARS_MODULE_EBIOS    EQU 0
49%endif
50
51; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes)
52DEFAULT_TEXT_MODE       EQU 4
53
54
55; Controller specific variables
56struc IDEVARS
57    .wPort              resb    2   ; IDE Base Port for Command Block (usual) Registers
58    .wPortCtrl          resb    2   ; IDE Base Port for Control Block Registers
59    .bDevice            resb    1   ; Device type
60    .bIRQ               resb    1   ; Interrupt Request Number
61    .drvParamsMaster    resb    DRVPARAMS_size
62    .drvParamsSlave     resb    DRVPARAMS_size
63endstruc
64
65; Device types for IDEVARS.bDevice
66DEVICE_8BIT_DUAL_PORT_XTIDE             EQU (0<<1)
67DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0    EQU (1<<1)
68DEVICE_8BIT_SINGLE_PORT                 EQU (2<<1)
69DEVICE_16BIT_ATA                        EQU (3<<1)
70DEVICE_32BIT_ATA                        EQU (4<<1)
71DEVICE_SERIAL_PORT                      EQU (5<<1)
72
73; Master/Slave drive specific parameters
74struc DRVPARAMS
75    .wFlags         resb    2   ; Drive flags
76    .wCylinders     resb    2   ; User specified cylinders (1...16383)
77    .wHeadsAndSectors:
78    .bHeads         resb    1   ; User specified Heads (1...16)
79    .bSect          resb    1   ; User specified Sectors per track (1...63)
80endstruc
81
82; Bit defines for DRVPARAMS.wFlags
83FLG_DRVPARAMS_USERCHS   EQU (1<<0)  ; User specified P-CHS values
84FLG_DRVPARAMS_BLOCKMODE EQU (1<<1)  ; Enable Block mode transfers
85
86
87%endif ; ROMVARS_INC
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