> I see you've figured it all out now :) Oh yes (he said, trying to keep a straight face). It was the initially bewildering choice of options that threw me. Thanks again for contributions. Before I get back to the job I'm supposed to be doing I'll play around with these oscillators some more and make a few notes -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist