#include <p18f4580.h>
void main(void)
  {
    	TRISCbits.TRISC0=1;		
	TRISB = 0;				
	TRISD = 0;				
    	T3CON=0x02;	
    	TMR3H=0;				
    	TMR3L=0;				
    	while(1)				
      {
       do
        {
          T3CONbits.TMR3ON=1;	
          PORTB=TMR3L;		
          PORTD=TMR3H;		
        } 
    while(PIR2bits.TMR3IF==0);	
    T3CONbits.TMR3ON=0;		
    PIR2bits.TMR3IF=0;		
       }
  }