>Making use of the calibration constant in your program is dead easy. When >the chip comes out of reset, the calibration constant is automatically >placed in W. All you have to do is move it to OSCCAL. Is this true for the 12C67x as well? The datasheet mentioned nothing of "automatically loading W after reset". I suppose it would be easy enough to verify, although I don't actually have a chip to test with :) --Andrew _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads