Hi All, If I remember right, I saw a tread some time ago that described the use = of several PIC's connected in series, in other words, one oscillator is = used, and the output of the first PIC 's oscillators goes to the input = of the next etc. True that I should use a 0.1 myF cap in between ? All = configured as XTAL' type osc ? I use one 5 MHz XTAL. Sven in Sweden -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads