Matthew Twomey wrote: > I have to program the pic, read it, then reprogram it with my app. I > dislike the idea of leaving the code to read the silicon rev in my > final application. You don't need to do this with the PIC code. Many PICs can't even read their own ID locations. I use my PIC programmer to get the revision. The chip ID is always accessible from the external programming interface. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics