Ok, with all the various issues wit the 18F parts, which ones actually work as advertised? If I understand correctly: 18Fx58 have a problem crossing the h4000 boundary 18Fxx20 are unreliable above 4mHz Right? Is that all... or is there more I'm missing? Which 18F parts actually work as advertised? I don't want to be down on Microchip, I've been using 16F parts for a couple years without significant problem. But now I have a project that needs more horsepower than the 16F877 can give me. -Denny -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body