6502/rom-counter.s

27 lines
245 B
ArmAsm

.org $8000
reset:
;; set output register
lda #$ff
sta $6002
;; flash the lights
;; lda #$50
;; sta $6000
;; start at 0
lda #$00
loop:
sta $6000
;; increment
adc #$1
jmp loop
.org $fffc
.word reset
.word $0000