Well, I think I found something -- I discovered that after I download the bigger program, for unknown reasons T1CON has been changed from the default of 0x00 to 0x09, which messes up -- lo and behold -- PORTC:1..0. So that seems to be why PORTC is messed up -- now I need to figure out why T1CON is not behaving as it should in reset ... -- ______________________________________ Andrew E. Kalman, Ph.D. aek@pumpkininc.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics