Please excuse the previous spurious posting Re: USB- I managed to hit 2 key combinations instead of one... With the current version of MPLAB (3.40.00), and PICSTART Plus, I don't get the chance to specify programming of only the required section of memory. I'm developing on a 16C76, but the code is small. With a previous version, when you clicked on Program, you had a chance to modify the "From" and "To" memory addresses, select one of the other programming options etc- not any more. Is there a way to change the default memory programmed? Or to stop the programmer when the programming window opens? Nigel -- Nigel Orr Research Associate O ______ Underwater Acoustics Group, o / o \_/( Dept of Electrical and Electronic Engineering (_ < _ ( University of Newcastle Upon Tyne \______/ \(