Subject: Re: [IBIS-Users] Using the '.ibis' (note the dot) in HSPICE
From: Mark Bossard (mbossard@atmel.com)
Date: Wed Apr 10 2002 - 09:30:22 PDT
To clear up a little confusion....
'.ibis' is a new command in Hspice (2001.4.1 is the first appearance I
think) that serves this function...
>>The Avant! True-Hspice models implement buffers as a standard b element. But to support simulation of IBIS >>models using .ebd and .pkg, True-Hspice IBIS models include another component that creates buffers for an >>integrated circuit.
>>The .ibis command adds a buffer to the netlist for every pin, according to the signal_name and model_name >>defined in the [Pin] keyword in the .ibs file.
Oddly enough.... you don't need to use .ebd or .pkg to use .ibis, and I
don't believe you need to use .ibis to use .ebd and .pkg (as they
existed in Hspice before .ibis).
As it is a new command, there is little documentation on it (only about
6 spotty pages).
It's enough of a departure from the normal B model ibis buffer in Hspice
that it gets rather confusing to try to use it.
I looked at it, tried using it a few times, and then gave up and decided
it was a waste of my valuable time (without better documentation and/or
support from Avanti).
-Mark Bossard
-
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