[SI-LIST] Re: IBIS generation methodology of v3.2 Vs v4.2

There are no changes in how those tables work
between the IBIS versions.  The only change is
that the waveform tables are allowed to have
1000 points (instead of 100) in the later spec.

We are trying our best to make things backwards
compatible in IBIS and as far as I remember,
so far everything is.

Arpad
=================================================

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Sudhanshu SINGH
Sent: Thursday, August 28, 2008 8:47 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] IBIS generation methodology of v3.2 Vs v4.2

Hello All,


-Is there any major change in ibis-v4.2 w.r.t. ibis-3.2
 ragarding generation of following tables:

[POWER Clamp]
[GND Clamp]
[Pullup]
[Pulldown]
[Ramp]
[*ing Waveform]


-My simulation software vendor says that it supports only ibis-v4.2 and
higher specs.
 So, I changed "[IBIS Ver]   3.2"  to "[IBIS Ver]   4.2"
 in the ibis file (supporting ibis ver 3.2) of bidirectional buffer
generated by me .
 And tried to simulate it with the simulation software provided by my
vendor.

Is it technically incorrect to change only [IBIS Ver] and to keep other
tables same , while shifting to higher versions.

i.e.,are  ibis versions backward-compatible ?




Thanks in advance for your feedback,

Best Regards,
Sudhanshu









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