Seyi, Here's what the serial receive section of an interrupt handler looks like under PICC for the '877. (HI-TECH) if (RCIF) { RcvdChar = RCREG; CREN = 0; CREN = 1; /* Save RcvdChar, Process, Whatever */ RCIF = 0; } Wynn -- 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