Jason White wrote: > what would happen if I put a 200MHz oscillator in (pic rated at > 40Mhz) ? Duh! As you say, the PIC is rated for 40MHz maximum oscillator frequency. Think back to fourth grade. Is 200 greater than 40? (Hint: if you count up from one to reach the other, then the first one is the lesser). Now look up "maximum" (It's in the "M" section of most dictionaries). ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist