Hello Anyone know of any software (or even hardware) issues when changing from a PIC16C77 surface mount part to a PIC16F877 surface mount part in an existing design. I would like to use the FLASH parts so I can update the software via the in-circuit programming interface during development ( saves de-soldering surface mount chips). For the FLASH version of the software .... Should I set/clear any extra configure bits ? Should I set/clear any extra RAM/registers ? Do something else ? Thank you Michael