#include <mc9s12dp512.h>
void main(void)
  {
   DDRB = 0xFF;	
   DDRT = DDRT & 0xF7;	
   ICPAR = 0x08; 
   TCTL4 = 0x40;  
   PACN3 = 0x00; 
 while(1)
    { 
     PORTB = PACN3;  
    }
  }