Minutes, IBIS Quality Task Group

19 October 2021

12:00-13:00 EST (09:00-10:00 PST)

ROLL CALL

ANSYS                               Curtis Clark
Intel Technology                    Michael Mirmak
Micron Technology                 * Randy Wolff
Signal Integrity Software:        * Mike LaBonte
Teraspeed Labs:                   * Bob Ross
Zuken USA:                        * Lance Wang

Everyone in attendance marked by *

NOTE: "AR" = Action Required.

-----------------------MINUTES ---------------------------
Mike LaBonte conducted the meeting.

Call for IBIS related patent disclosures:

- None


Call for opens:

- Mike LaBonte said the agenda email did not go through


Review of previous meeting minutes:
Minutes from the October 12, 2021 meeting were reviewed.  Randy Wolff moved to accept the
minutes.  Bob Ross seconded the motion.  Without objection, the minutes were approved.


ARs:
- AR: Bob Ross to upload prior IBISCHK source code distributions
  Not done yet. 
	Bob said he needed to have directories that he could upload, he had no access.

Bob Ross said the QA suite did not include golden reference results.

AR: Mike LaBonte to create server folders for IBISCHK 3 through 6

NEW ITEMS:

New parser bug reports:
Bob Ross reported there were no new bug reports.


IBISCHK710 development:
Bob Ross said the developer had continued to ask good questions.  Final delivery of the
software would continue to be delayed.  One question was being discussed in the ATM Task
Group.  Randy Wolff said he was happy to have the feedback.  Mike LaBonte asked if any
questions posed a serious challenge.

One question was about case sensitivity of parameters.  Randy said two parameters on the
same line differing only in case should be an error, but in IBIS they were treated as
case-sensitive.  Bob said we would not change the case policy for IBIS.  Mike said it
would be a problem for EDA tools, to map two parameters into one.  He suggested a warning
when multiple names would map into one.  Bob said we would check the name matching as
though everything was case-sensitive.  That would force the IBIS-ISS files to be treated
as case-sensitive, even though the specification did not require that.  Bob said Arpad
Muranyi had asked if VHDL-AMS and VerilogA files should be treated the same.  Lance Wang
said AMS languages were case-sensitive anyway.  Bob said he asked the developer to test in
a case-sensitive manner.  Randy and Mike agreed with that.

Randy asked what our process should be for reviewing new message strings.  Bob said we
would receive a spreadsheet of all messages.  Mike said that spreadsheet usually arrived
some time later, but it would be easy to find the new strings ourselves.  Bob said EMD
messages would have a new number section.  Mike said he could extract the new messages for
review once the code was received.

Bob showed an [Interconnect Model] example.  He described a problem where there might be a
conflict depending on which [Interconnect Model]s were chosen from the [Interconnect Model
Set]s.  In some cases the only valid combinations might depend on the placement of
Aggressor_only.  The developer had been instructed not to generate any warnings for these
cases.  Bob felt the Editorial Group might address the question.  Mike felt the
interconnect model syntax provided a good facility for delivering a rich set of models
that EDA tools could pick through to assemble the circuits they needed.  One shortcoming
was the lack of identification of where there was coupling.


Tabled topics (no discussion without motion):
  - BIRD181.2
  - IBISCHK security fixes


Randy Wolff  moved to adjourn. Bob Ross seconded. Without objection the meeting ended.

Meeting ended: 12:58 ET

Next meeting October 26, 2021