pogozhev_lab_1

.include "m64def.inc"

jmp init
main:
in r16, pind
in r17, pind


andi r16, (1<<1)
andi r17, (1<<4)


lsr r16

lsr r17
lsr r17
lsr r17
lsr r17

or r16, r17

sbrs r16, 0
rcall invert
rjmp main;

init:
ldi r16, low(ramend)
out spl, r16
ldi r16, high(ramend)
out sph, r16
ldi r16, (1<<3)
out ddrb, r16
clr r16
jmp main;

invert:
	sbis pinb, 3
	sbi portb, 3
	sbic pinb, 3
	cbi portb, 3
ret;