rom_leds.asm (271B)
1 #define LEDS $FD 2 #define START_VALUE $00 3 #define COUNTER $01 4 .set_address $80 5 LDA #$20 6 STA START_VALUE 7 start: 8 LDA START_VALUE 9 STA COUNTER 10 loop: 11 LDA COUNTER 12 ADD #$FF 13 STA COUNTER 14 STA LEDS 15 JNZ :loop 16 JZE :start