Hi everybody, First of all, to everybody who replied to my last call for help THANXXX a lot (Dennis, Mike,...) ! Here are some questions for all you experts out there... 1) When I look at the OSCOUT pin of my 16C74 I see the following sine : 1 to 2 Vpp AC and 2.5 V DC. Is this normal or should the signal be larger. (Is the DC voltage OK ?) What could be the problem ? 2) Very strange, the next one ... The bigger my program gets (max. about 1K), the less signal I get at CLKOUT. Does program size have anything at all to do with the oscillator circuitry ? If anyone can give an answer to these (ridiculous ?) questions I would be most gratefull ! Thanx anyway. Ben.