Many thanks to all of you for helping me out. To clarify a bit: * I am using a JW part so that it can handle 16Mhz * I programed the 16c55 in HS mode * I verified the signal is going to OSC1 pin 27 I'll go to school and check the waveform on OSC2 Again, I appreciate you taking time to help me out. Ken Dougal slm5g@cc.usu.edu