Hello, I have just looked at the configuration bits of the 18c252 and discovered that there are 6 phyical addresses associated with it. Normally, when I would program 16Cxx devices in ASM, I would set the __CONFIG compiler directive to the desired configuration, but I am not curtain how to do this with the new 18C252 and 452 devices. Does anyone know how to set these in the ASM code? Thanks, James -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body