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Cyanne/easy6502_input-polling.asm

Last active January 22, 2023 22:00
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easy6502_input-polling.asm
LDX $00 ; Initialize X: Drawing position
loop:
LDA $ff ; Load key register.
CMP $00 ; ╮ Loop back on no input.
BEQ loop ; ╯
STA $0200,X ; Draw dot for key input color
LDA #$00 ; ╮ Polling done, reinitialize
STA $ff ; ╯ input register.
INX ; Increment drawing position
JMP loop
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