; Project name : XTIDE Universal BIOS ; Description : Defines for ROMVARS struct containing variables stored ; in BIOS ROM. %ifndef ROMVARS_INC %define ROMVARS_INC ; ROM Variables. Written to the ROM image before flashing. struc ROMVARS .wRomSign resb 2 ; ROM Signature (AA55h) .bRomSize resb 1 ; ROM size in 512 byte blocks .rgbJump resb 3 ; First instruction to ROM init (jmp) .rgbSign resb 8 ; Signature for XTIDE Configurator Program .szTitle resb 31 ; BIOS title string .szVersion resb 25 ; BIOS version string .wFlags resb 2 ; Word for ROM flags .wDisplayMode resb 2 ; Display mode for boot menu .wfDisplayBootMenu: ; Zero = no Boot Menu, non-zero = Boot Menu timeout .wBootTimeout resb 2 ; Boot Menu selection timeout in system timer ticks .bIdeCnt resb 1 ; Number of available IDE controllers .bBootDrv resb 1 ; Boot Menu default drive .bMinFddCnt resb 1 ; Minimum number of Floppy Drives .bStealSize resb 1 ; Number of 1kB blocks stolen from 640kB base RAM .ideVars0 resb IDEVARS_size .ideVars1 resb IDEVARS_size .ideVars2 resb IDEVARS_size .ideVars3 resb IDEVARS_size %ifdef MODULE_SERIAL .ideVarsSerialAuto resb IDEVARS_size %endif endstruc ; Bit defines for ROMVARS.wFlags FLG_ROMVARS_FULLMODE EQU (1<<0) ; Full operating mode (steals base RAM, supports EBIOS etc.) FLG_ROMVARS_DRVXLAT EQU (1<<2) ; Enable drive number translation FLG_ROMVARS_SERIAL_SCANDETECT EQU (1<<3) ; Scan COM ports at the end of drive detection. Can also be invoked ; by holding down the ALT key at the end of drive detection. ; (Conveniently, this is 8, a fact we exploit when testing the bit) FLG_ROMVARS_MODULE_JRIDE EQU (1<<5) ; Here in case the configuration needs to know functionality is present FLG_ROMVARS_MODULE_SERIAL EQU (1<<6) ; Here in case the configuration needs to know functionality is present FLG_ROMVARS_MODULE_EBIOS EQU (1<<7) ; Here in case the configuration needs to know functionality is present ; Boot Menu Display Modes (see Assembly Library Display.inc for standard modes) DEFAULT_TEXT_MODE EQU 4 ; Controller specific variables struc IDEVARS ;;; Word 0 .wSerialPortAndBaud: ; Serial connection port (low, divided by 4) and baud rate divisor (high) .wPort: ; IDE Base Port for Command Block (usual) Registers .bSerialPort resb 1 .bSerialBaud resb 1 ;;; Word 1 .wPortCtrl: .bSerialUnused resb 1 ; IDE Base Port for Control Block Registers .wSerialCOMPortCharAndDevice: ; In DetectPrint, we grab the COM Port char and Device at the same time .bSerialCOMPortChar resb 1 ; Serial connection COM port number/letter ;;; Word 2 .bDevice resb 1 ; Device type .bIRQ resb 1 ; Interrupt Request Number ;;; And more... .drvParamsMaster resb DRVPARAMS_size .drvParamsSlave resb DRVPARAMS_size endstruc %if IDEVARS.bSerialCOMPortChar+1 != IDEVARS.bDevice %error "IDEVARS.bSerialCOMPortChar needs to come immediately before IDEVARS.bDevice so that both bytes can be fetched at the same time inside DetectPrint.asm" %endif ; Default values for Port and PortCtrl, shared with the configurator ; DEVICE_XTIDE_DEFAULT_PORT EQU 300h DEVICE_XTIDE_DEFAULT_PORTCTRL EQU 308h DEVICE_ATA_DEFAULT_PORT EQU 1F0h DEVICE_ATA_DEFAULT_PORTCTRL EQU 3F0h ; Device types for IDEVARS.bDevice ; DEVICE_8BIT_DUAL_PORT_XTIDE EQU (0<<1) DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0 EQU (1<<1) DEVICE_8BIT_SINGLE_PORT EQU (2<<1) DEVICE_16BIT_ATA EQU (3<<1) DEVICE_32BIT_ATA EQU (4<<1) DEVICE_SERIAL_PORT EQU (5<<1) ; must be last entry, or remove optimization in DetectPrint DEVICE_JRIDE_ISA EQU (6<<1) ; Master/Slave drive specific parameters struc DRVPARAMS .wFlags resb 2 ; Drive flags .dwMaximumLBA: ; User specified maximum number of sectors .wCylinders resb 2 ; User specified cylinders (1...16383) .wHeadsAndSectors: .bHeads resb 1 ; User specified Heads (1...16) .bSect resb 1 ; User specified Sectors per track (1...63) endstruc ; Bit defines for DRVPARAMS.wFlags FLG_DRVPARAMS_USERCHS EQU (1<<0) ; User specified P-CHS values FLG_DRVPARAMS_BLOCKMODE EQU (1<<1) ; Enable Block mode transfers FLG_DRVPARAMS_USERLBA EQU (1<<2) ; User specified LBA values ; ; COM Number to I/O Port Address Mapping ; ; COM Number: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ; Corresponds to I/O port: 3f8, 2f8, 3e8, 2e8, 2f0, 3e0, 2e0, 260, 368, 268, 360, 270 ; Corresponds to Packed I/O port (hex): 37, 17, 35, 15, 16, 34, 14, 4, 25, 5, 24, 6 ; DEVICE_SERIAL_COM1 EQU 3f8h DEVICE_SERIAL_COM2 EQU 2f8h DEVICE_SERIAL_COM3 EQU 3e8h DEVICE_SERIAL_COM4 EQU 2e8h DEVICE_SERIAL_COM5 EQU 2f0h DEVICE_SERIAL_COM6 EQU 3e0h DEVICE_SERIAL_COM7 EQU 2e0h DEVICE_SERIAL_COM8 EQU 260h DEVICE_SERIAL_COM9 EQU 368h DEVICE_SERIAL_COMA EQU 268h DEVICE_SERIAL_COMB EQU 360h DEVICE_SERIAL_COMC EQU 270h %endif ; ROMVARS_INC