You'll note, if you inspect the datasheet, that Microchip hasn't listed any values for oscillators (crystal or resonator) above 20MHz, the closest they get is listing a 25MHz crystal in the capacitor value table with valuse of "TBD" as in the capacitor column I seem to remember that if you wanted to run the chip above 20MHz you had to use a lower oscillator value and use the PLL to multiply it by 4. However, you can probably get it going faster if you try a few different capacitors, and perhaps use a resistor in series. Check the archives for crystal problems. -Adam Michael Simpson wrote: >I have tried everything including the HS/PLL option using just about every Resonator and Crystal I could get my hands on. > >Im using MPLAB and a PICSTART Plus. > >The best I seem to do is 20Mhz > >-- >http://www.piclist.com hint: The PICList is archived three different >ways. See http://www.piclist.com/#archives for details. > > > > > > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body