int main(){

	MCUCR |= (1<<ISC01) | (1<<ISC00);							
	GICR &= ~(1<<INT0);										

	TCNT1H = 0;										
	TCNT1L = 0;										
   	TIMSK |= (1<<TOIE1);  
   	TCCR1A = 0;
	TCCR1B = 0b00000000;	


	while(1){

	}								

	return 0;
}




SIGNAL (SIG_INTERRUPT0) 													
{

	if (timerflag == 0) {									
		TCCR1B = 0b00000101;								
		timerflag = 1;
	} else {
		TCCR1B = 0b00000000;								
		LTIMER = TCNT1L;
		HTIMER = TCNT1H;
		TCNT1H = 0;									
		TCNT1L = 0;									
		GICR &= ~(1<<INT0);								
		timerflag = 0;	
	}

}