#define	F_CPU	16000000UL
#include <avr/io.h>
#define f_out   125000
#define cmp_val (F_CPU + f_out / 2) / (2 * f_out) - 1
int main(void)
{
  OCR0A  = OCR0B = cmp_val;
  TCCR0A = (1<<COM0A0) | (1<<COM0B0) | (1<<WGM01);
  TCCR0B = (1<<CS00) | (1<<FOC0B);
  DDRD   = 0b01100000;     // OC0A, OC0B
  while (1);
}