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Last change
on this file since 90 was
90,
checked in by aitotat, 13 years ago
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Changes to XTIDE Universal BIOS:
- Removed INT 13h format and diagnostics functions.
- Removed INT 18h callback handler.
- Removed configuration for early/late initialization. Now XT builds always use late and AT build early initialization.
- Reduced number of supported IDE controllers from 5 to 4.
- Removed reserved configuration bytes.
- Removed simple and system boot loaders.
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File size:
1.0 KB
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| 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : Defines for BOOTVARS struct used by boot menu |
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| 3 | ; and drive initialization. |
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| 4 | %ifndef BOOTVARS_INC |
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| 5 | %define BOOTVARS_INC |
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| 6 | |
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| 7 | |
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| 8 | ; Boot Menu Information Table. These are generated for all XTIDE Universal |
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| 9 | ; BIOS drives. Available only until boot is successfull. |
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| 10 | LEN_BOOTNFO_DRV EQU 26 ; Bytes reserved for drive name |
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| 11 | struc BOOTNFO |
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| 12 | .twSectCnt resb 6 ; Total user addressable sectors |
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| 13 | .szDrvName resb LEN_BOOTNFO_DRV+1 ; Drive name |
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| 14 | resb 1 ; Alignment |
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| 15 | endstruc |
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| 16 | |
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| 17 | |
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| 18 | ; Pre-boot variables. These do not exist after successfull boot to OS. |
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| 19 | ; Segment is always 0000h, same as BDA segment |
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| 20 | struc BOOTVARS |
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| 21 | resb 800h |
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| 22 | .dwPostStack resb 4 ; 804h, POST stack when entering INT 19h |
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| 23 | resb 8 |
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| 24 | .rgBootNfo resb 73F4h ; 80Ch, Array containing BOOTNFO structs |
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| 25 | .rgbMnuStack: ; 7C00h and below, Boot Menu stack |
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| 26 | .rgbAtaInfo: ; 7C00h, ATA Information for drive detection |
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| 27 | .rgbBootSect resb 512 ; 7C00h, Boot sector |
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| 28 | endstruc |
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| 29 | |
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| 30 | |
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| 31 | %endif ; BOOTVARS_INC |
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