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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | |
| 2 | .IFNDEF __FAT_INC__ |
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| 3 | __FAT_INC__ .SET 1 |
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| 4 | |||
| 5 | .LIST on |
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| 6 | |||
| 7 | .INCLUDE INC\LDT.INC |
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| 8 | |||
| 9 | CLSBUF .EQU $100 ; dma buffer of cluster cache |
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| 10 | CLSMAXSIZ .EQU 64 ; max. size of cluster in sector's |
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| 11 | |||
| 12 | ;--------------------------------------------------------------------------- |
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| 13 | ; FAT Working Segment |
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| 14 | ;--------------------------------------------------------------------------- |
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| 15 | |||
| 16 | FATSEG .EQU $010000 |
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| 17 | FATBNK .EQU .SEG.FATSEG ; FAT working bank |
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| 18 | |||
| 19 | FS .SET FATSEG |
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| 20 | FE .SET FATSEG + $FFFF |
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| 21 | FO .SET $018C00 |
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| 22 | |||
| 23 | _FATS: .SECTION ref_only, common, offset FO, range FS FE ;FAT Segment |
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| 24 | _FATS_START .DS 0 |
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| 25 | |||
| 26 | _pbr0 .DS 512 |
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| 27 | _pbr1 .DS 512 |
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| 28 | _pbr2 .DS 512 |
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| 29 | _pbr3 .DS 512 |
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| 30 | |||
| 31 | _FATS_END .DS 0 |
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| 32 | FATSSIZ .EQU (_FATS_END - _FATS_START) |
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| 33 | .ENDS |
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| 34 | |||
| 35 | ;--------------------------------------------------------------------------- |
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| 36 | ; direct page for LDT tables (P0LDT direct page) |
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| 37 | ;--------------------------------------------------------------------------- |
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| 38 | |||
| 39 | _DPLDT: .SECTION page0, common, ref_only, offset 0 ;LDT D.P. |
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| 40 | |||
| 41 | ldt0 .DS LDTSIZE |
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| 42 | ldt1 .DS LDTSIZE |
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| 43 | ldt2 .DS LDTSIZE |
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| 44 | ldt3 .DS LDTSIZE |
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| 45 | ldt4 .DS LDTSIZE |
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| 46 | ldt5 .DS LDTSIZE |
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| 47 | |||
| 48 | _DPLDT_END .DS 0 |
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| 49 | |||
| 50 | .ENDS |
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| 51 | |||
| 52 | |||
| 53 | ;--------------------------------------------------------------------------- |
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| 54 | ; FAT var's direct page (P0FAT direct page) |
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| 55 | ;--------------------------------------------------------------------------- |
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| 56 | |||
| 57 | _DPFAT: .SECTION page0, common, ref_only, offset 0 ;FAT D.P. |
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| 58 | |||
| 59 | ldtfg1 .DB ; logical volume flag's |
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| 60 | ; <7>: device ready (fdc drive or ata device) |
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| 61 | ; <6>: if=1->HD/CF else->FD |
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| 62 | ; <0>: phisycal device number |
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| 63 | |||
| 64 | ldtfg2 .DB ; <7>: valid volume (fat volume or cbm disk) |
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| 65 | ; <6>: if=1->FAT else->CBM (FD only) |
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| 66 | ; <5>: disk format checked |
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| 67 | ; <1:0>: disk format (fdc only) |
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| 68 | |||
| 69 | ldtroot .DW ; lba of root dir |
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| 70 | ldtfat1 .DW ; lba of fat1 table |
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| 71 | ldtfat2 .DW ; lba of fat2 table |
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| 72 | ldtcls .DW ; lba of first data cluster |
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| 73 | ldtmax .DW ; max usable cluster + 1 |
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| 74 | ldtrent .DW ; root dir. max. entries |
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| 75 | ldtcent .DW ; max. entries in dir. cluster |
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| 76 | ldteoc .DW ; end of cluster chain marker |
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| 77 | ldtfree .DW ; count of free cluster's |
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| 78 | ldtnxt .DW ; next free cluster |
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| 79 | ldtfsiz .DW ; fat table size |
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| 80 | |||
| 81 | ldtcsiz .DB ; cluster size (1,2,4,8,16,32,64) |
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| 82 | ldtcshf .DB ; cluster shift (0,1,2,3,4,5,6) |
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| 83 | ldtrsiz .DB ; root dir. size (sector's) |
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| 84 | ldtmcls .DB ; mask for clust. module: 00,01,03,07,0F,1F,3F |
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| 85 | ldtcdlp .DW ; current working dir list pointer |
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| 86 | ldtcdcls .DW ; current working dir start cluster |
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| 87 | ldtcdlvl .DB ; current working dir level count |
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| 88 | |||
| 89 | ; --------------------------- |
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| 90 | |||
| 91 | curldt .DB ; pointer to current LDT |
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| 92 | ldtp .DS 6 ; LDT's pointer |
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| 93 | defdrv .DB ; default logical drive |
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| 94 | curdrv .DB ; current logical drive |
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| 95 | |||
| 96 | lba .LWORD ; current lba |
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| 97 | wseccnt .DW ; sector count |
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| 98 | |||
| 99 | defhsec .DB ; default hidden sector's in fdisk |
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| 100 | pdrive .DB ; phisycal drive number (temp.) |
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| 101 | |||
| 102 | _fattmp .DS 48 |
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| 103 | |||
| 104 | .ENDS |
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| 105 | |||
| 106 | .LIST off |
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| 107 | |||
| 108 | .ENDIF |