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October 19, 2021 04:27
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This code prints the flag of Lithuania on a 6502 chip's video memory
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| ; Load colors to the stack | |
| LDA #$00 | |
| PHA | |
| LDA #$08 | |
| PHA | |
| LDA #$05 | |
| PHA | |
| LDA #$07 | |
| PHA | |
| ; Load pseudo video memory address into $f0 | |
| LDX #$80 | |
| STX $f0 | |
| LDX #$01 | |
| STX $f1 | |
| changecolor: | |
| PLA | |
| CMP #$00 | |
| BEQ end | |
| ; Move video memory pointer to the next region | |
| LDX $f1 | |
| INX | |
| STX $f1 | |
| paint: | |
| STA ($f0), Y | |
| INY | |
| CPY #$00 | |
| BEQ changecolor | |
| JMP paint | |
| end: |
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