Re: [IBIS-Users] Hspice ibischk4 tool

Hello Shulong:

Yes BUG82 should be fixed since Ver 4.0.2 served as the
baseline for Versio 4.1X developement underway.

Bob

slwu wrote:

> Hi All,
>
> Does anybody know whether BUG82 is also fixed in ibischk4 Version 4.1.0beta
> ?
>
> Thanks
> slwu
>
> Bob Ross wrote:
>
>
>>Fabrizio:
>>
>>The difference between ibischk4 Version 4.0.1 and ibischk4 Version 4.0.1
>>is BUG82. BUG82 was serious enough to justify a special release of
>>ibischk4.
>>
>> http://eda.org/pub/ibis/bugs/ibischk/index.html
>>
>>A text list of what verion a bug fix has been implemented exists
>>in the bugdir.txt file link at the end of this link.
>>
>>Bob
>>
>>Zanella, Fabrizio wrote:
>>
>>
>>>The latest version of Synopsys Hspice, version 2004.09, uses the
>>>ibischk4 tool, version 4.0.1. In a simulation I ran yesterday, Hspice
>>>reported errors running the v4.0.1 ibischk4 with the rising and falling
>>>waveforms when using an IBIS model as a driver.
>>>
>>>Here?s a sample of the errors:
>>>
>>>ERROR - Model osoc2_od: The [Rising Waveform]
>>>
>>> with [R_fixture]=60 Ohms and [V_fixture]=3.3V
>>>
>>> has TYP column DC endpoints of 2.02V and 3.30v, but
>>>
>>> an equivalent load applied to the model's I-V tables yields
>>>
>>> different voltages ( 2.02V and 2.02V),
>>>
>>> a difference of inf% and inf%, respectively.
>>>
>>>ERROR - Model osoc2_od: The [Falling Waveform]
>>>
>>> with [R_fixture]=60 Ohms and [V_fixture]=3.3V
>>>
>>> has TYP column DC endpoints of 2.02V and 3.30v, but
>>>
>>> an equivalent load applied to the model's I-V tables yields
>>>
>>> different voltages ( 2.02V and 2.02V),
>>>
>>> a difference of inf% and inf%, respectively.
>>>
>>>
>>>
>>>An engineer at the device manufacturer said there are no errors when he
>>>uses the ibischk4 v4.0.2 tool. Can someone explain what the differences
>>>are between versions 4.0.1 and 4.0.2 of the ibischk4 tool and does
>>>anyone know whether Synopsys will be moving to the latest ibischk4 tool
>>>in the Hspice simulator?
>>>
>>>Thanks and regards,
>>>
>>>
>>>
>>>Fabrizio Zanella
>>>
>>>Signal Integrity
>>>
>>>Enterasys Networks
>>>
>>>Andover, MA
>>>
>>>Phone: 978-684-1340
>>>
>>>fzanella@enterasys.com <mailto:fzanella@enterasys.com>

-- 
Bob Ross
Teraspeed Consulting Group LLC     Teraspeed Labs
121 North River Drive              13610 SW Harness Lane
Narragansett, RI 02882             Beaverton, OR 97008
503-750-6481                       503-430-1065
http://www.teraspeed.com           503-246-8048 Direct
bob@teraspeed.com
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