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Ed Lee
Ed Lee
Ed Lee has been around EDA since before it was called EDA. He cut his teeth doing Public Relations with Valid, Cadence, Mentor, ECAD, VLSI, AMI and a host of others. And he has introduced more than three dozen EDA startups, ranging from the first commercial IP company to the latest statistical … More »

Design rules built on quicksand?

May 27th, 2015 by Ed Lee

Sage CEO Coby Zelnik recently talked with us about how design rules need a formal methodology to account for all the permutations of each rule for today’s and the next generation’s chip designs.

What I found alarming was that he noted how design rules are being built today.   An engineer writes the rule based on…well, based on…um…gut feel?    The point is that the design rule creation process currently has no specification to govern the creation of the design rule.

What should the design rule document?

While trying to make some sense of this point, it occurred to me that it’s a lot like building a house on no foundation…or building a house on top of quicksand.

Zelnik talks about the problem here.


Lee PR does work for Sage.

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