well...searching around, haven't found a way to actually tristate a port pin? TRIS is the direction register...but how do you actually set PORTB,3 to be tristated, then set for an output, and back and forth. _________________________________________________________________ Join the world s largest e-mail service with MSN Hotmail. http://www.hotmail.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.