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To: Jim McMannis who wrote (16557)	10/29/2000 2:29:56 PM
From: dale_laroy	Respond to of 275872

You have to tape out again, but not necessarily all layers. And if the new tapeout is just a minor bug fix, production can begin with previous masks.

To: Jim McMannis who wrote (16557)	10/29/2000 2:32:46 PM
From: Jim McMannis	Respond to of 275872

Dale, Thanks... Sounds like we may never know everything about how many redesigns and tapeouts. OTOH, I'll drop the subject. Jim

To: Jim McMannis who wrote (16557)	10/29/2000 5:16:52 PM
From: Charles R	Respond to of 275872

Jim, <That's what I thought from gleening from Scumbria and Athlon release. Looks like 10 months or so for the P4...is that a rush job or is Intel just better?> If the chip is not totally brand new, the platform is sound and the process is well characterized, a 9 month window is aggressive possible. It takes a lot of things to line up properly to make that happen. In P4's case what Intel is doing is a testament to the amount of work being done to make P4 happen. I would consider a November launch to be a good effort. <Now, once you have first silicon, can you do some design changes without taping out again and starting the process over again?> Not really. Everytime a change is made to the design a new tapeout occurs resulting in a new stepping. The complexity of the change can be simple and take just a few days(typically you hear stuff like metal mask change) or complex (typically you hear all layer change or major revision and that could take weeks) Chuck