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| 1 | ; File name : BootVars.inc
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| 2 | ; Project name : IDE BIOS
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| 3 | ; Created date : 23.3.2010
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| 4 | ; Last update : 9.4.2010
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| 5 | ; Author : Tomi Tilli
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| 6 | ; Description : Defines for BOOTVARS struct used by boot menu
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| 7 | ; and drive initialization.
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| 8 | %ifndef BOOTVARS_INC
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| 9 | %define BOOTVARS_INC
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| 10 |
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| 11 |
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| 12 | ; Boot Menu Information Table. These are generated for all XTIDE Universal
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| 13 | ; BIOS drives. Available only until boot is successfull.
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| 14 | LEN_BOOTNFO_DRV EQU 26 ; Bytes reserved for drive name
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| 15 | struc BOOTNFO
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| 16 | .twSectCnt resb 6 ; Total user addressable sectors
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| 17 | .szDrvName resb LEN_BOOTNFO_DRV+1 ; Drive name
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| 18 | resb 1 ; Alignment
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| 19 | endstruc
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| 20 |
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| 21 |
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| 22 | ; Pre-boot variables. These do not exist after successfull boot to OS.
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| 23 | ; Segment is always 0000h, same as BDA segment
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| 24 | struc BOOTVARS
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| 25 | resb 800h
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| 26 | .dwSys18h resb 4 ; 800h, System INT 18h handler (Diskless boot, Boot failure)
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| 27 | .dwPostStack resb 4 ; 804h, POST stack when entering INT 19h
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| 28 | .bMenuHotkey resb 1 ; 808h, Boot Menu hotkey, zero if none pressed
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| 29 | resb 3
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| 30 | .rgBootNfo resb 73F4h ; 80Ch, Array containing BOOTNFO structs
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| 31 | .rgbMnuStack: ; 7C00h and below, Boot Menu stack
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| 32 | .rgbAtaInfo: ; 7C00h, ATA Information for drive detection
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| 33 | .rgbBootSect resb 512 ; 7C00h, Boot sector
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| 34 | endstruc
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| 35 |
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| 36 |
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| 37 | %endif ; BOOTVARS_INC
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