> Maybe you could work with the start/stop bits to simulate a 9 bit > transmision. > Mmm, would you please tell me how? You can probably play with the parity. Configuring the uart for 8 data bits and MARK parity will give you a 9th ONE bit, 8 data bits and SPACE parity will give you a 9th zero bit. Beware the time the parity bit is actually generated; if you output data, you may have to wait several bittimes before changing the parity configuration of the uart... BillW -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu