While we're on the P16PRO topic, I have a little problem with it. I'm using P16PRO hardware with PICALL-Windows software. The original line on device.ini file for PIC16F877 is: PIC16F877 8192 256 1 14 40 1 2 0 0 2 But it haven't worked until I've changed to: PIC16F877 8192 256 1 14 40 1 10 0 0 2 ^^^^ Why? With '2' it will program faster, right? What can I do to solve this? Best regards, Brusque