[IBIS] Re: [IBIS-Users] IBIS 4.1 parser errors vs. 3.2

Hi IBIS Users:

Doran sent me the file, and I confirmed that the problem
exists exactly as Doran reported.

The problem is very isolated.  It only occurs with the
ibischk4 Version 4.1.0 release.  This release only dealt with
adding new features and did not include new BUG fixes.  So
we should be able to isolate this problem and issue a new
release at a later time.

At this time keep a copy of the older Version 4.0.2 parser
available to verify any reported waveform mismatch error.
This version and earlier ones are archived in the old_*
directories.

   http://www.eda.org/pub/ibis/ibischk4/

Thank you Doran for reporting this.  If people observe any
differences in the results for any IBIS Vers 3.2, 4.0 or 4.1 files
when checking with ibischk V 4.0.2 and V 4.1.0, please report
them to the me.  (I may need to see the file.)

Bob



CW - Doran David wrote:
> Hello :
> 
> I just tried running my open-drain IBIS model using 
> latest 4.1 parser (just released), and found major errors
> like shown below.
> 
> However my model passed clean using version 3.2 and 4.0.2
> parsers.  Let me know if anyone else has similar errors 
> with 4.1 which were not flagged on previous parser, and 
> whether 4.1 is correct with these errors.  I'm just surprised
> that 4.0.2 and 3.2 passed the same model.
> 
> Thanks!
> 
> ------------- Begin Forwarded Message -------------
> IBISCHK4 V4.1.0
> 
> Checking drac_tc260_150.ibs for IBIS 4.1 Compatibility...
> 
> ERROR - Model DRAC_TC260: The [Falling Waveform] 
>       with [R_fixture]=34 Ohms and [V_fixture]=1.8V
>       has TYP column DC endpoints of  1.01V and  1.80v, but
>       an equivalent load applied to the model's I-V tables yields
>       different voltages ( 1.01V and  0.00V),
>       a difference of  0.01% and 178.36%, respectively.
> 
> 
> (this was clean with old Parser 3.2 and 4.0.2)
> 
> 
> ------------- End Forwarded Message -------------
> 
> 


-- 
Bob Ross
Teraspeed Consulting Group LLC     Teraspeed Labs
121 North River Drive              13610 SW Harness Lane
Narragansett, RI 02882             Beaverton, OR 97008
401-284-1827                       503-430-1065
http://www.teraspeed.com           503-246-8048 Direct
bob@teraspeed.com

Teraspeed is a registered service mark of Teraspeed Consulting Group LLC


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