anyway the pwm (the only way to have two pulses on different ports of a pic at the same time) it's not good for me cause i work with stepper motors and i have to define closed number of steps, not frequencies. Cause i must define fix numbers, not number of pulses for second. I can't tell the pic to count until 9600 on a port and to count until 120000 on another port at the same time (the quartz of course) its impossible.