IBIS FUTURES/COOKBOOK SUBCOMMITTEE MEETING
Date: March 11, 2004

Attendees:
John Angulo, Mentor Graphics
Ian Dodd, Mentor Graphics
Lynne Green, Green Streak Programs
Michael Mirmak, Intel Corp.
Arpad Muranyi, Intel Corp.
Bob Ross, Teraspeed Consulting Group
Lance Wang, Cadence Design Systems

Next Meeting:
Thursday, March 25
1 PM - 3 PM US Pacific Time

 Telephone     Bridge   Passcode
916-356-4261     3      117-9799
(Cookbook meeting will be held first)

FUTURES MINUTES

The attendees reviewed the major specification improvements
discussed at recent Open Forum meetings and Summits.  These
include establishing series connections under IBIS 4.1, expanding
[Circuit Call] to include [Model]s and [External Model]s and
allowing external IBIS data to expand portability.

Arpad Muranyi expressed concern that, as IBIS matures, increasing
amounts of "old baggage" -- keywords which are less freqently used but
require support -- are making introducing new features difficult.  
Ian Dodd stated his disagreement, suggesting that most of IBIS 3.2 is
still very much in use.  Bob Ross observed that [External Circuit],
while flexible, is not useful for IBIS buffers right now, due to its
lack of measurement "hooks."  While the group agreed that user-definable
measurements would be useful, these may have to be deferred until
IBIS 4.3 or later.

Seven specific BIRD proposals were defined:

1) Define accepted digital states for input and output
   ports on IBIS 4.1 AMS models

2) Provide explicit links between ICM and IBIS

3) Expand [Circuit Call] to accept native IBIS [Model]
   and [External Model] references

4) Define series links between pins, pads and/or nodes
   under the multi-lingual extensions

5) Create user-definable buffer delay and input threshold
   measurements

6) Permit re-use of port names under [External Model]
 
7) Permit native IBIS data to be linked through external
   file names, similar to the multi-lingual extensions

Attendees were assigned to complete formal proposals or
definitions for the above, as follows:

1) Ian Dodd
2) Michael Mirmak
3) John Angulo
4) Ian Dodd & Bob Ross
5) Lance Wang, Ian Dodd and Arpad Muranyi
6) Arpad Muranyi
7) Lynne Green

The formal statements should include a problem statement and
a general outline of the solution.  

The formal statements for problems (1) and (2) will be 
reviewed at the next meeting.

COOKBOOK MINUTES

The attendees reviewed the previous cookbook covering IBIS 2.1.  
Lynne Green suggested that separate documents might be created
to cover package and interconnect modeling formats (ICM, EBD and PKG)
apart from buffer modeling (IBIS).  Lynne also advocated adding more
examples.  Lance Wang agreed, suggesting that specific technologies
(such as pre-emphasis) could be addressed through Open Forum application
notes.

Some shortcomings of the 2.1 cookbook included tool-specific timing loads,
improper diode treatments, too great an emphasis on IBIS 1.1, a lack of
differential modeling information and numerous typographical errors.

Arpad suggested that the S2IBIS tool shortcomings could be discreetly
addressed, perhaps in favor of S2IBIS3.  Alternately, a list of features
in a "perfect tool" for data extraction could be included.  The attendees agreed
that specific commercial tools should not be mentioned or criticized.

The attendees committed to following a division of labor similar to that in
the Futures Subcommittee.  Key missing components of the cookbook will be
summarized through short problem and resolution statements.  These will be expanded
in the final text.

a) Proper methods of data extraction
b) List of keywords introduced since the IBIS 2.1 cookbook
c) Steps for proper treatment of differential buffers
d) List of most common questions/issues from reflectors

The summaries will be supplied as follows:

a) Arpad Muranyi & Lance Wang
b) Michael Mirmak
c) John Angulo
d) Lynne Green

These will be reviewed in the next meeting.