avr_register_vector(avr, &p->overflow);
avr_register_vector(avr, &p->icr);
+ avr_register_io_write(avr, p->wgm[0].reg, avr_timer_write, p);
avr_register_io_write(avr, p->cs[0].reg, avr_timer_write, p);
// this assumes all the "pending" interrupt bits are in the same