mirror of https://github.com/a2-4am/4cade.git
221 lines
4.8 KiB
Plaintext
221 lines
4.8 KiB
Plaintext
;license:MIT
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;(c) 2019 by 4am
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;
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!cpu 6502
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!to "build/FX.INDEXED/LATTICE",plain
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*=$6000
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maskindex = $fc
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rowcount = $fd
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row = $fe
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col = $ff
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!source "src/fx/macros.a"
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!source "src/constants.a"
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lda #5
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sta maskindex
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MaskLoop
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ldx maskindex
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lda even_maskslo,x
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sta EvenMask
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lda even_maskshi,x
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sta EvenMask+1
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lda odd_maskslo,x
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sta OddMask
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lda odd_maskshi,x
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sta OddMask+1
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lda #0
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sta row
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lda #23
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sta rowcount
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jsr WaitForVBL
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RowLoop
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lda row
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+HGR_ROW_CALC
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lda #39
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sta col
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ColLoop
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ldy col
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tya
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eor row
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and #1
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bne Odd
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clc
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ldx #7
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- lda ($3c),y
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eor ($26),y
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EvenMask=*+1
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and $FDFD,x
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eor ($26),y
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sta ($26),y
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+HGR_INC_WITHIN_BLOCK
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dex
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bpl -
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bmi NextCol
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Odd
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clc
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ldx #7
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- lda ($3c),y
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eor ($26),y
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OddMask=*+1
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and $FDFD,x
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eor ($26),y
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sta ($26),y
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+HGR_INC_WITHIN_BLOCK
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dex
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bpl -
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NextCol
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+RESET_HGR_CALC
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dec col
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+LBPL ColLoop
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inc row
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dec rowcount
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+LBPL RowLoop
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bit $c000
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bmi Exit
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dec maskindex
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+LBPL MaskLoop
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Exit jmp UnwaitForVBL
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even_maskslo
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!byte <copymask_even6
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!byte <copymask_even5
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!byte <copymask_even4
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!byte <copymask_even3
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!byte <copymask_even2
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!byte <copymask_even1
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even_maskshi
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!byte >copymask_even6
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!byte >copymask_even5
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!byte >copymask_even4
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!byte >copymask_even3
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!byte >copymask_even2
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!byte >copymask_even1
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odd_maskslo
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!byte <copymask_odd6
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!byte <copymask_odd5
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!byte <copymask_odd4
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!byte <copymask_odd3
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!byte <copymask_odd2
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!byte <copymask_odd1
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odd_maskshi
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!byte >copymask_odd6
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!byte >copymask_odd5
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!byte >copymask_odd4
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!byte >copymask_odd3
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!byte >copymask_odd2
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!byte >copymask_odd1
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copymask_even1
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!byte %11100000
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!byte %10110000
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!byte %10011000
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!byte %10011000
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!byte %10001100
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!byte %10000110
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!byte %10000011
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!byte %10000001
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copymask_odd1
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!byte %10000001
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!byte %10000011
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!byte %10000110
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!byte %10001100
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!byte %10011000
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!byte %10011000
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!byte %10110000
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!byte %11100000
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copymask_even2
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!byte %11110000
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!byte %10111000
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!byte %10011100
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!byte %10011100
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!byte %10001110
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!byte %10000111
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!byte %11000011
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!byte %11100001
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copymask_odd2
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!byte %11100001
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!byte %11000011
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!byte %10000111
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!byte %10001110
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!byte %10011100
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!byte %10011100
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!byte %10111000
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!byte %11110000
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copymask_even3
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!byte %11110001
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!byte %11111000
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!byte %10111100
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!byte %10111100
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!byte %10011110
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!byte %10001111
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!byte %11000111
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!byte %11100011
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copymask_odd3
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!byte %11100011
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!byte %11000111
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!byte %10001111
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!byte %10011110
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!byte %10111100
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!byte %10111100
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!byte %11111000
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!byte %11110001
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copymask_even4
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!byte %11111001
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!byte %11111100
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!byte %10111110
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!byte %10111110
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!byte %10011111
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!byte %11001111
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!byte %11100111
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!byte %11110011
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copymask_odd4
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!byte %11110011
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!byte %11100111
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!byte %11001111
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!byte %10011111
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!byte %10111110
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!byte %10111110
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!byte %11111100
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!byte %11111001
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copymask_even5
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!byte %11111011
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!byte %11111101
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!byte %11111110
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!byte %11111110
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!byte %10111111
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!byte %11011111
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!byte %11101111
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!byte %11110111
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copymask_odd5
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!byte %11110111
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!byte %11101111
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!byte %11011111
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!byte %10111111
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!byte %11111110
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!byte %11111110
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!byte %11111101
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!byte %11111011
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copymask_even6
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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copymask_odd6
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!byte %11111111
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!source "src/wait.a"
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