#include <mc9s12dp512.h>     
unsigned char COUNT;
void main(void) 
{
  
  DDRB = 0xFF; 
  DDRA = 0xFF; 
  DDRH = 0x00; 
  COUNT = 0;   
  TSCR1 = 0x80;
  TSCR2 = 0x86;
  TFLG2 = TFLG2 | TFLG2_TOF_MASK; 
  __asm CLI; 
  for(;;) 
  {
    PORTA = PTH;
  } 
  
}
interrupt (((0x10000-Vtimovf)/2)-1) void TOF_ISR(void) 
{
  COUNT++; 
  PORTB = COUNT; 
  TFLG2 = TFLG2 | TFLG2_TOF_MASK; 
}