>how to do this with a _say_ 16C73, with all his PWM generators, Caputre >modules, and running at 20MHz. ?Any help here? I did this already. I used a '73 with a GAL16V8 (I think, or 22V10) configured to allow me to switch the PWM pins between input and output. It worked nicely, gave 1uS resolution using a 4MHz ceramic resonator. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================