#include <HC11A1.h>
#include <introl.h>
void IH(void);
volatile char temp = 0x00;

main()
{
  _ATTACH (IH, 8);	/* OC interrupt */
  _H11TMSK1 = 0x40;	/* enable OC2 */
  _H11TOC2  = 0x9999;	
  _H11TCTL1 = 0x40;  	/* toggle PA6 */
  _H11DDRC  = 0xFF;	/* set portc output */
  _H11PORTC = 0x00;	/* and start with 0 */
while(1)
{
}

}


void IH(void)
{
 int i,j;
 if( temp == 0x00 ) _H11PORTC = 0xff;
 if( temp != 0x00 ) _H11PORTC = 0x00;
 for(i=0; i<100; i++)
    for(j=0; j<1000; j++);
 temp ^= 0xff;		/* toggle portc */
 _H11TFLG1 = 0x40;
}