>From: Bob Ammerman > >A quick aside on this. > >I think that one of the primary applications for which mChip designed >interrupt-on-change was to support waking up on a keypress. > Thanks to all for your inputs on this question. You're right on the money, Bob, as to waking up from sleep with a keypress. Interrupt-on-change is ideal for this. It gets a bit messier if you try to use this feature to recognize multiple interrupt sources. By changing to polling on two of my external inputs, I've managed to reduce the number of interrupts required to just one. Performance is minimally impacted and now I can just use the RB0 interrupt. I'll leave the multiple interrupts for another day. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.