Olin, you were right : >2 - Do a VERIFY on the chip to make sure it's programmed correctly. > The PIC was not programmed correctly due to a misconfiguration of the programmer. Now it works fine. Thank you all !!! -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body