HI All Can anyone explain why my 622 osc can not be seen on a scope. Running the 622 at 500hz I can see quite well my osc running, put the 4MHz osc and nothing, although it appears that the chip runs as it sedns a test message. Ionly thing i see is a sine/square wave of about 0.1vp-p at the osc frequency. Other pics can be displayed fine at this frequency, why not the 622? Also hasi remember a while back mention of pulling the osc caps to 5v instead of 0V how reliable is this ? what side effects occur? Thanks -- Robert Drake PS. Im not on the list, because our mail system can't handle "traffic" :-(, replys direct would be greatly appricated.