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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | ; LDT.INC |
| 2 | |||
| 3 | .IFNDEF __LDT_INC__ |
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| 4 | __LDT_INC__ .SET 1 |
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| 5 | |||
| 6 | .LIST on |
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| 7 | ;--------------------------------------------------------------------------- |
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| 8 | ; Logical Drive Table (LDT) -- page 0 offset's |
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| 9 | ;--------------------------------------------------------------------------- |
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| 10 | |||
| 11 | STRUCT LDT |
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| 12 | ldt_fg1 .DB ; logical volume flag's |
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| 13 | ; <7>: device ready (fdc drive or ata device) |
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| 14 | ; <6>: if=1->HD/CF else->FD |
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| 15 | ; <1:0>: phisycal device number |
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| 16 | |||
| 17 | ldt_fg2 .DB ; <7>: valid volume (fat volume or cbm disk) |
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| 18 | ; <6>: if=1->FAT else->CBM (FD only) |
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| 19 | ; <5>: disk format checked |
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| 20 | ; <1:0>: disk format (fdc only) |
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| 21 | |||
| 22 | ldt_root .DW ; lba of root dir |
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| 23 | ldt_fat1 .DW ; lba of fat1 table |
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| 24 | ldt_fat2 .DW ; lba of fat2 table |
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| 25 | ldt_cls .DW ; lba of first data cluster |
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| 26 | ldt_max .DW ; max usable cluster + 1 |
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| 27 | ldt_rent .DW ; root dir. max. entries |
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| 28 | ldt_cent .DW ; max. entries in dir. cluster |
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| 29 | ldt_eoc .DW ; end of cluster chain marker |
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| 30 | ldt_free .DW ; count of free cluster's |
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| 31 | ldt_nxt .DW ; next free cluster |
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| 32 | ldt_fsiz .DW ; fat table size |
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| 33 | |||
| 34 | ldt_csiz .DB ; cluster size (1,2,4,8,16,32,64) |
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| 35 | ldt_cshf .DB ; cluster shift (0,1,2,3,4,5,6) |
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| 36 | ldt_rsiz .DB ; root dir. size (sector's) |
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| 37 | ldt_mcls .DB ; mask for clust. module: 00,01,03,07,0F,1F,3F |
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| 38 | ldt_cdlp .DW ; current working dir list pointer |
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| 39 | ldt_cdcls .DW ; current working dir start cluster |
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| 40 | ldt_cdlvl .DB ; current working dir level count |
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| 41 | |||
| 42 | ldt_ptype .DB |
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| 43 | ldt_pstart .LWORD |
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| 44 | ldt_psize .LWORD |
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| 45 | |||
| 46 | ldt_fp .EQU ldt_pstart ; fat table buffer long pointer |
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| 47 | ldt_fbuf .EQU ldt_pstart+3 ; fat table: x-mem base bank/dma buffer |
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| 48 | |||
| 49 | ldt_pbr .EQU ldt_psize ; long pointer to PBR cache buffer |
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| 50 | ldt_fmt .EQU ldt_psize+3 |
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| 51 | |||
| 52 | ESTRUCT LDT |
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| 53 | |||
| 54 | .ENDIF |