55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* For now hard-coded */
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/* Could be made dynamic if we want to be useful */
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/* On dos3.2 disks, or larger filesystems */
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#define TRACKS_PER_DISK 0x23
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#define SECTORS_PER_TRACK 0x10
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#define BYTES_PER_SECTOR 0x100
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#define VTOC_TRACK 0x11
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#define VTOC_SECTOR 0x00
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/* VTOC Values */
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#define VTOC_CATALOG_T 0x1
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#define VTOC_CATALOG_S 0x2
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#define VTOC_DOS_RELEASE 0x3
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#define VTOC_DISK_VOLUME 0x6
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#define VTOC_MAX_TS_PAIRS 0x27
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#define VTOC_LAST_ALLOC_T 0x30
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#define VTOC_ALLOC_DIRECT 0x31
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#define VTOC_NUM_TRACKS 0x34
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#define VTOC_S_PER_TRACK 0x35
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#define VTOC_BYTES_PER_SL 0x36
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#define VTOC_BYTES_PER_SH 0x37
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#define VTOC_FREE_BITMAPS 0x38
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/* CATALOG_VALUES */
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#define CATALOG_NEXT_T 0x01
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#define CATALOG_NEXT_S 0x02
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#define CATALOG_FILE_LIST 0x0b
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#define CATALOG_ENTRY_SIZE 0x23
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/* CATALOG ENTRY */
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#define FILE_TS_LIST_T 0x0
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#define FILE_TS_LIST_S 0x1
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#define FILE_TYPE 0x2
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#define FILE_NAME 0x3
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#define FILE_SIZE_L 0x21
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#define FILE_SIZE_H 0x22
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#define FILE_NAME_SIZE 0x1e
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/* TSL */
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#define TSL_NEXT_TRACK 0x1
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#define TSL_NEXT_SECTOR 0x2
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#define TSL_OFFSET_L 0x5
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#define TSL_OFFSET_H 0x6
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#define TSL_LIST 0xC
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#define TSL_ENTRY_SIZE 0x2
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#define TSL_MAX_NUMBER 122
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/* Helper Macros */
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#define TS_TO_INT(__x,__y) ((((int)__x)<<8)+__y)
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#define DISK_OFFSET(__track,__sector) ((((__track)*SECTORS_PER_TRACK)+(__sector))*BYTES_PER_SECTOR)
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