I've switched to the 16F877A from a 16F877 and having a problem with my code. Before I get into a long drawn-out discussion of the exact problem .. are there some standard things I should to to make the "a" version act like the original (non-a) ? Thanks, DLD David Dunn Digital Racing Products dave@digitalracingproducts.com www.digitalracingproducts.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body