#include "avr/io.h"
#include "avr/interrupt.h"

int main ( )
{
	DDRB |= 0x82;		
	DDRC = 0x00;		
	DDRD = 0xFF;		

	TCNT0 = -160;		
	TCCR0 = 0x01;		

	TCNT1H = (-640)>>8;	
	TCNT1L = (-640);		
	TCCR1A = 0x00;
	TCCR1B = 0x01;
	TIMSK = (1<<TOIE0)|(1<<TOIE1); 
	sei ();				 

	while (1)			
		PORTD = PINC;		
}

ISR (TIMER0_OVF_vect)		
{
	TCNT0 = -160;	   	
	PORTB ^= 0x02;	   	
}

ISR (TIMER1_OVF_vect)	  
{
	TCNT1H = (-640)>>8;	
	TCNT1L = (-640);		

	PORTB ^= 0x80;		
}