#define __SFR_OFFSET 0
#include <avr/io.h>

.global main
main:
        sbi DDRD,0x05         ; Configure port D pin 5 as output
        sbi DDRD,0x06
        sbi DDRD,0x07

loop:
        ;sbi  PORTD,0x05        ; Toggle output pin HIGH
        call Delay1s
        cbi PORTD,PD5        ; Toggle output pin LOW

        call Delay1s
        ;sbi PORTD,0x06        ; Toggle output pin HIGH
        cbi PORTD,PD6        ; Toggle output pin LOW

        ;sbi PORTD,0x07        ; Toggle output pin HIGH
        call Delay1s
        cbi PORTD,PD7        ; Toggle output pin LOW

        rjmp loop

Delay1s:
    ldi r18, 64
De1:
    ldi r19, 250
De2:
    ldi r20, 250
De3:
    dec r20
    nop
    brne De3
    dec r19
    brne De2
    dec r18
    brne De1
ret