> > I wonder if there's a complication with the timers in your app ? > This is the biggest thing I suspect now. I just tried your routine > above, and it totally froze now.... no display updates, etc. Odd!? Note that the particular program it came from didn't use IRQs and so never re-enable them -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu