Jinx Although timing is not critical, to use a delay loop - delay_100ms( 4 ) - would make more sense if I knew the osc freq. I thought that there would be a rule-of-thumb to calculate these things. Regards Chris A -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body