address $0
start:
	load s0, 0
	load sE, 0
	load sF, 0
	interrupt enable

loop:
	addcy s0, $f0
	call nc, func
	jump loop

func:
	add sE, 3
	return

isr:
	addcy sF, 1
	returni enable


	address $3ff
irq:
	jump isr