Um, can you be more specific?What isn't working? I bought that book and the Pickit1 about 2 years ago and it's been a great kickstart into PIC programming. I've since bought a Pickit2 and tried some other PICs but I still use the book and the Pickit1 for some quick tests, and the '684 is maybe my favourite PIC - small size, but loaded. -- View this message in context: http://old.nabble.com/port-issues-with-a-16f684-tp26148875p26257108.html Sent from the PIC - [PIC] mailing list archive at Nabble.com. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist