Mike's learned opinion was.... > The other thing to watch out for in a 12C50x is that the calibration > value will be erased along with everything else when you erase the > chip. Before using a new JW chip for the first time, put it in the > programmer and read it, then (hand)write the calibration value on > the bottom of the package. Before reprogramming, check that MPLAB > has the proper calibration value for that chip. If you only are > using one chip over and over again MPLAB will generally remember it. Hmmm. No wonder my timers have such wild variations..... -- Lawrence Lile Download AutoCad blocks for electrical drafting at: http://members.sockets.net/~llile/index.htm