John Orhan wrote: > > Hi Tobie, > I have seen a circuit where a 4Mhz Z80 was clocked at 10Mhz with the > addition of a 10M parallel resistor across the Xtal. I don't know how/why > this would work but am dying to find out. May have been an old trick of mine you read John. It was fine for the Z80's and gave them a kick start, to do with start up current from what I remember. Don't know if would apply to PICs. Don McKenzie mailto:don@dontronics.com http://www.dontronics.com World's Largest Range of Atmel/AVR and PICmicro Hardware and Software. Free Basic Compiler and Programmer http://www.dontronics.com/runavr.html