Russell McMahon wrote : > My questions tend to be following a slightly different track to those > relating to software settings. Nothing wrong there. But since Dave wrote : "I am running the PIC on a PICDem 4 board, which included a "RS232 level shifting IC"." I, at least, thought that the hardware was pretty given. And since I don't know anything about the PICDem 4, I saw no reason to comment on that. Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist