23 lines
351 B
NASM
23 lines
351 B
NASM
;; Fill display with $FF
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LDA $00
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STO $21 ; Pixel index
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; store the $FF that we'll use to fill the screen
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LDA $FF
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STO $22
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@copy-to-display
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LDA ($22) ; A = mem[$22] = $FF
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STO ($21) ; mem[mem[$21]] = A = $FF
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; increment pixel index
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LDA ($21)
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ADD $01
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STO $21
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; if CF is set, then the display is full and we're done
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CHP
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JMP @copy-to-display
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END |