//atmega8


void main () {

ddrd.f0=1;
portd.f0=0;

ddrd.f1=1;
portd.f1=1;
delay_ms(500);
portd.f1=0;
WDTCR |= (1<<WDCE) | (1<<WDE);

WDTCR |= (1<<WDP0) | (1<<WDP1)| (1<<WDP2);

while (1) {

portd.f0=1;
delay_ms(3000);
portd.f0=0;
delay_ms(3000);
WDTCR = 0x00;


}
}