Hi Everyone, BS4 works great. Must haves: Serial in to RA2, serial out from RA3, and 4 MHz xtal. Not 4.192 MHz(what I had at first grab, did not work). Does anyone have any more info about this program? Are the other PORTA pins usable? Source code? I looked at www.sistudio.com and it's blank there. Thanks again Antti and Don. The local high school kids will be using this thing for sure. -Bob