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109 lines
5.6 KiB
Plaintext
Executable File
109 lines
5.6 KiB
Plaintext
Executable File
;-------------------------------
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; Passport maintains a table of codes for each sector on the disk.
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; One byte per sector, arranged in increasing logical sector order
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; from T00,S00 to T22,S0F. Some sectors have their own individual
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; labels for convenience, but you can use math to find any specific
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; sector.
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; e.g.
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; LDA #kSectorOptional
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; STA T00S0A
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; will mark T00,S0A as optional
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;
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; LDA #kSectorOptional
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; LDY #$0A
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; STA T00,Y
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; will also mark T00,S0A as optional
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;
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; The sector map is reset for each disk (to #kSectorRequired for
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; all sectors), then modified based on boot sector identification
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; and other factors.
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;
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; Codes are opaque values, not bit flags.
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; Some codes are grouped into ranges that are compared as integers.
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; Always use labels for comparison.
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;
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kSectorIgnore = $00 ; ignore this sector (don't even read it)
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kSectorOptional = $01 ; sector is optional (read, but errors are non-fatal)
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kSectorSwitchToBuiltinRWTS = $FE ; sector is required, and switch to built-in RWTS before reading it
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kSectorRequired = $FF ; sector is required (errors are fatal)
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; range of codes that trigger various custom routines before reading a sector
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kSectorCustomFirst = $C0
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kSectorCustomLast = $D0
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; specific codes
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kSectorResetAdaptiveRWTS = $C0 ; will accept any epilogue on next sector, then remember it
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kSectorIgnoreAddressChecksum = $C1 ; will ignore address field checksum
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kSectorCustomDOS32B4BB = $C2 ; DOS 3.2 / JMP B4BB RWTS swapper
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;-------------------------------
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InitSectorMap
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!zone {
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lda #<sectormap
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sta .B+1
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lda #>sectormap
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sta .B+2
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lda #kSectorRequired
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ldx #$22
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.A ldy #$0F
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.B sta $FFFF
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inc .B+1
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bne +
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inc .B+2
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+ dey
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bpl .B
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dex
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bpl .A
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rts
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}
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sectormap
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T00S00
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T00 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T00S09 !byte $FF
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T00S0A !byte $FF
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T00S0B !byte $FF
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T00S0C !byte $FF
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T00S0D !byte $FF
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T00S0E !byte $FF
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T00S0F !byte $FF
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T01 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T01S0F !byte $FF
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T02 !byte $FF,$FF,$FF,$FF,$FF
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T02S05 !byte $FF
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!byte $FF,$FF,$FF,$FF,$FF,$FF
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T02S0C !byte $FF
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!byte $FF,$FF,$FF
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T03 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T04 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T05 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T06 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T07 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T08 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T09 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0A !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0B !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0C !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0D !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0E !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T0F !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T10 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T11 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T11S0F !byte $FF
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T12 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T13 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T14 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T15 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T16 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T17 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T18 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T19 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1A !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1B !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1C !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1D !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1E !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T1F !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T20 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T21 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T22 !byte $FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF,$FF
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T22S0F !byte $FF
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