#include <mc9s12dp512.h>
void main(void)
  {
    unsigned char x, y;
    unsigned char mybyte = 0x29;
    DDRA = 0xFF;	
    DDRB = 0xFF;    			
    x = mybyte & 0x0F;			
    PORTB = x | 0x30;			
    y = mybyte & 0xF0;			
    y = y >> 4;  			
    PORTA = y | 0x30;			
  }