I recently purchased a quantity of 16HV540-20/P from a reputable supplier, Digikey. In checking each device, the Fosc bits in the configuration word are not blank, but rather at 10. The clock modes are; 11 RC 10 HS 01 XT 00 LP Thus, the PICs have been preprogrammed for HS and I can use this and I can also program them for LP. Is this a fluke or are the -20 devices preprogrammed for HS (10) and the -04 devices for XT (01). Thanks. Pete Anderson, pha(at)phanderson.com, http://www.phanderson.com __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body