... "Invalid OSCCAL Value detected" What exactly is this telling me, other > than the obvious that it found something it didnt expect. > Presumably if it can't read the chip, it may still try to interpret the value it got back anyway, which won't make any sense to it. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .