main()
{
//exit(99);

a=0; n=0;

  do
  {
  c=0;
  do {
  c++;
  if (c&1){ portset(n);}else { portclr(n);};

  p1+=100;
  if (p1>4096) {p1=0;};

  gvarset(0x1010000,p1);//set to PWM1 value p1
  gvarset(0x1010001,p1);//set to PWM2 value p1
  gvarset(0x1010002,p1);//set to PWM3 value p1
  gvarset(0x1010003,p1);//set to PWM4 value p1

  gvarset(0x1010010,p1); //dac

  }while(c<6);

n++;
if (n>15){n=0;};

}while(1);

};