If I set PR2 to 0, I get no SPI clock at all. Is this correct? Graham > Olin, if I set PR2 to 0, then the timer will not increment I believe. Am I > correct? I think so, but that's exactly what you want. The output of timer 2 will then be Fosc/4. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads