mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-13 18:29:34 +00:00
103 lines
4.6 KiB
ArmAsm
103 lines
4.6 KiB
ArmAsm
;
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; Divide-by-7 table. Used to divide the X coordinate (0-255) by 7, yielding a
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; byte offset for the hi-res screen column.
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;
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Div7Tab: ; 1400
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.byte $00,$00,$00,$00,$00,$00,$00,$01,$01,$01,$01,$01,$01,$01,$02,$02
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.byte $02,$02,$02,$02,$02,$03,$03,$03,$03,$03,$03,$03,$04,$04,$04,$04
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.byte $04,$04,$04,$05,$05,$05,$05,$05,$05,$05,$06,$06,$06,$06,$06,$06
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.byte $06,$07,$07,$07,$07,$07,$07,$07,$08,$08,$08,$08,$08,$08,$08,$09
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.byte $09,$09,$09,$09,$09,$09,$0a,$0a,$0a,$0a,$0a,$0a,$0a,$0b,$0b,$0b
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.byte $0b,$0b,$0b,$0b,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0d,$0d,$0d,$0d,$0d
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.byte $0d,$0d,$0e,$0e,$0e,$0e,$0e,$0e,$0e,$0f,$0f,$0f,$0f,$0f,$0f,$0f
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.byte $10,$10,$10,$10,$10,$10,$10,$11,$11,$11,$11,$11,$11,$11,$12,$12
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.byte $12,$12,$12,$12,$12,$13,$13,$13,$13,$13,$13,$13,$14,$14,$14,$14
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.byte $14,$14,$14,$15,$15,$15,$15,$15,$15,$15,$16,$16,$16,$16,$16,$16
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.byte $16,$17,$17,$17,$17,$17,$17,$17,$18,$18,$18,$18,$18,$18,$18,$19
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.byte $19,$19,$19,$19,$19,$19,$1a,$1a,$1a,$1a,$1a,$1a,$1a,$1b,$1b,$1b
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.byte $1b,$1b,$1b,$1b,$1c,$1c,$1c,$1c,$1c,$1c,$1c,$1d,$1d,$1d,$1d,$1d
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.byte $1d,$1d,$1e,$1e,$1e,$1e,$1e,$1e,$1e,$1f,$1f,$1f,$1f,$1f,$1f,$1f
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.byte $20,$20,$20,$20,$20,$20,$20,$21,$21,$21,$21,$21,$21,$21,$22,$22
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.byte $22,$22,$22,$22,$22,$23,$23,$23,$23,$23,$23,$23,$24,$24,$24,$24
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;
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; Hi-res bit table. Converts the X coordinate (0-255) into a bit position
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; within a byte. (Essentially 2 to the power of the remainder of the coordinate
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; divided by 7.)
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;
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HiResBitTab: ; 1500
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08,$10,$20,$40,$01,$02,$04,$08,$10,$20,$40
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.byte $01,$02,$04,$08
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;
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; Hi-res Y-coordinate lookup table, low byte. Values 0-191 are meaningful, 192-
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; 255 are junk.
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;
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YTableLo: ; 1600
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.byte $00,$00,$00,$00,$00,$00,$00,$00,$80,$80,$80,$80,$80,$80,$80,$80,$00,$00,$00,$00,$00,$00,$00,$00,$80,$80,$80,$80,$80,$80,$80,$80
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.byte $00,$00,$00,$00,$00,$00,$00,$00,$80,$80,$80,$80,$80,$80,$80,$80,$00,$00,$00,$00,$00,$00,$00,$00,$80,$80,$80,$80,$80,$80,$80,$80
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.byte $28,$28,$28,$28,$28,$28,$28,$28,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$28,$28,$28,$28,$28,$28,$28,$28,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$a8
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.byte $28,$28,$28,$28,$28,$28,$28,$28,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$28,$28,$28,$28,$28,$28,$28,$28,$a8,$a8,$a8,$a8,$a8,$a8,$a8,$a8
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.byte $50,$50,$50,$50,$50,$50,$50,$50,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$50,$50,$50,$50,$50,$50,$50,$50,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$d0
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.byte $50,$50,$50,$50,$50,$50,$50,$50,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$50,$50,$50,$50,$50,$50,$50,$50,$d0,$d0,$d0,$d0,$d0,$d0,$d0,$d0
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.align $0100 ; (64 bytes)
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;==============================================
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; Hi-res Y-coordinate lookup table, high byte.
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;==============================================
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YTableHi:
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $00,$04,$08,$0c,$10,$14,$18,$1c
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $01,$05,$09,$0d,$11,$15,$19,$1d
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $02,$06,$0a,$0e,$12,$16,$1a,$1e
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.byte $03,$07,$0b,$0f,$13,$17,$1b,$1f
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.align $0100 ; (64 bytes)
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