FW: [SI-LIST] : IBIS Model Verification (correction)

Greg Edlund (Greg.Edlund@digital.com)
Fri, 11 Sep 1998 08:47:53 -0400

Good discussion on a topic that's becoming pertinent to many of us in
the SI business. I've done a little work in behavioral model
development and simulation, and here's my take. Syntactical correctness
and the ability to run the model in a simulator are the "CAD" side of
IBIS datasheet "goodness." The "electrical" or "physical" side of the
same topic involves comparing enough measurements to simulation to
insure that the behavioral representation of the circuit accurately
matches the real silicon. As IBIS consumers, we need to make known to
our vendors the need for both CAD and electrical verification, even to
the point of writing these things into our purchase agreements. Money
talks.
----------
Greg Edlund, Principal Engineer
Server Product Development
Compaq Computer Corp.
129 Parker St. PKO3-1/20C
Maynard, MA 01754
(978) 493-4157 voice
(978) 493-0941 FAX
greg.edlund@digital.com

----------
From: Ray Anderson[SMTP:raymonda@radium.Eng.Sun.COM]
Reply To: Ray Anderson
Sent: Thursday, September 10, 1998 2:24 PM
To: si-list@silab.Eng.Sun.COM
Subject: Re: [SI-LIST] : IBIS Model Verification (correction)

So what if a user receives a commercial model that he/she
believes is
defective in some way and notifies the model's developer of the
fact?
Then the developer submits it for verification. Will this
overload the
system? This would provide a single point of contact between the
developer and the verifier.

Granted, the model developer should have ensured model
compliance
prior to releasing it to the user community, but at least this
would/could
provide verification after the fact in problematic cases.


Ray Anderson
Sun Microsystems Inc.
>
>
> Hi Weston, Stephen,
>
> I need to modify a statement made by Stephen.
> The "Free" IBIS model review is NOT for CAE users. It was
> setup to assist model developers at the IC house with their
> models. We DO NOT have the bandwidth to check models submitted
> by users of all the CAE tools in the world.
> We DO have the bandwidth to check models submitted by the IC houses.
>
> If we had more volunteers we could expand this program into users.
> I suggest a user network be created powered by other users that
> volunteer. The "IBIS open user forum"
>
>

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