stfc.ac.uk> writes: > > I found that CPU's rarely go bad (unless you force them to). My experience with GDR made Z80 clones (U880) is different. They had leakag= e problems and ran so hot at 3.5MHz that they removed fingerprints and sizzle= d water drops placed on them. I glued a small heatsink on one at least once t= o have peace of mind. -- Peter --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .