Adres j. Ogayar wrote: > I am using a siple parallel port programmer for 16F84s, and it works > very well. But recently, i have been offered some 16c54s for free. > Unfortunatelly, the programming software/hardware combination doesn't > understand them. > > Has anyone a clue? Or better a simple programmer schema for both > micros? In line with recent suggestions on this list you are advised to go out and buy a decent programmer. If you are foolish enough not to take good advice look here: http://www.man.ac.uk/~mbhstdj/upp.html David