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25 lines
359 B
NASM
25 lines
359 B
NASM
// Test setting the program PC through a #pc directive
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $2000 "Program"
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.label BGCOL = $d021
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.label RASTER = $d012
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main: {
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sei
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__b1:
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lda RASTER
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cmp #$1e
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bcc __b2
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lda #0
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sta BGCOL
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jmp __b1
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__b2:
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jsr incScreen
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jmp __b1
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}
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incScreen: {
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lda RASTER
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sta BGCOL
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rts
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}
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