Tim Hamel wrote... >You can not imagine how much of an idiot I feel like right about now! = Now >that I've fixed it, the code with the ISR works just dandy! I've tried really, really, REALLY hard to remember a time when, after figuring out the cause of a problem in something I'd designed, I **DIDN'T** feel like an utter moron for having caused it in the first place. I've a good memory, and have been making technical mistakes for more than a third of a century. No luck. I've felt like a dolt, every time. Best thing is to be kind to yourself, and have a chuckle over it. Dave -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu