> You are right! After this I checked, and what is actually happening is > that when I put the scope probe on the xtal the osc stops. That's pretty normal when putting a 1Mohm scope probe on the oscillator in pin. You have to use the scope probe in x10 mode (10Mohm) to see the osciallator signals correctly. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body