Help!  I need help with the firmware to make an LED dimmer with a 12C509 PIC
running off the internal oscillator.  I have been able to read a pot and dim
the LED with PWM, but my source code does not run fast enough to keep the
LEDs from flickering(They are multiplexed 7 segment displays run off another
PIC).  I would like to do the PWM at about 1KHz.  That doesn't leave a lot of
time to read the pot, etc.  The code also needs to check an input pin and
output a pulse on another pin if a switch is closed for more than 2 seconds.
 The resolution doesn't have to be real high and the duty cycle doesn't have
to be a full 0 to 100%, but the closer I can get the better.  I appreciate
any help anyone can give me.  I am not good with real time programming.