At 09:39 AM 12/18/97 -0500, you wrote: >Hi All: > >At the risk of offending the geniuses out there, I have a(nother) >completely dumb question. I have a PIC application that works >beautifully on a microchip demonstration board, and won't work on my >own. If it were me I'd look very carefully at the oscillator. I've seen a lot of problems there over the years. The other thing I'd check is to make sure all "unused" pins are pulled up or down, I've seen floating pins cause interrupts and resets on more than a system or two. Wynn