On Wed, Oct 13, 1999 at 12:12:09AM -0400, Mike M wrote: > Hey if u plug in a pic chip specifically a 16c84 right out the packaging un pr ogrammed and wire it to +5v and mclr to +5v trough a 1k resistor and place a 4mh z crystale with two caps on it going to ground should the crystal be oscillating if u put a logic probe on it or no? cause my chip isnt. Im new to pic's.. AFAIK the configuration bits are set to 3FFF in factory. It means that oscillator selection bits are set to "11", and RC oscillator is selected. So you can test the "fresh" PIC's in RC configuration, not XT. -- Wojciech Zabolotny http://www.ise.pw.edu.pl/~wzab http://www.debian.org Use Linux - save your data and time