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45 lines
882 B
Plaintext
45 lines
882 B
Plaintext
;license:MIT
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;(c) 2018 by 4am
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;
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!cpu 6502
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!to "build/FX/AND",plain
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*=$6000
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i = $ff
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lda #$06
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sta i
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@outerloop
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dec i
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bpl +
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@exit rts
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+ ldx i
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lda masks,x
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sta @mask
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ldx #$40
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stx @src
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ldx #$20
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stx @dest
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ldy #0
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@innerloop
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@src=*+2
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lda $FD00,y ; SMC
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@mask=*+1
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and #$FD ; SMC
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@dest=*+2
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sta $FD00,y ; SMC
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iny
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bne @innerloop
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inc @src
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inc @dest
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dex
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bne @innerloop
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lda #$30
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jsr WaitForKeyWithTimeout
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bmi @exit
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bpl @outerloop ; always branches
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masks
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!byte $FF,$BF,$9F,$8F,$87,$83,$81
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!source "src/wait.a"
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!source "src/fx/fx.hgr.common.a"
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