I'm trying to set up design rules regarding Signal Integrity in Protel DXP. I'm a little confused about overshoot, undershoot and impedance parameters. What values should I set up and where can I find them for PICs? Or there are some standard values? Thank you, Sam -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist