alan.b.pearce@stfc.ac.uk wrote: > I don't think the 16F876A has an internal RC oscillator. If that is > the case, then the addition of a suitable R & C to the appropriate > pins will probably make it spring into life. I thought the internal oscillator was one of the things that was added from the 16F87x to the 16F87xA, but I just checked and you're right (too many PICs to keep in your head). These PICs all require something external to get the CPU clock going. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .