Minutes, IBIS Quality Task Group

May 16, 2023

12:00-13:00 Eastern Time (09:00-10:00 Pacific Time)

ROLL CALL

Intel Corporation                   Michael Mirmak 
Micron Technology                   [Randy Wolff]
Siemens EDA                         Randy Wolff *, Weston Beal *,
                                      Arpad Muranyi 
Teraspeed Labs                      Bob Ross *
Zuken USA                           Lance Wang *
Zuken                               Michael Schader *
GE Healthcare Technologies          Balaji Sankarshanan 


Everyone in attendance marked by *

NOTE: "AR" = Action Required.

-------------------------------  MINUTES  -------------------------------------
Bob Ross conducted the meeting.
Weston Beal recorded the minutes.


Call for IBIS related patent disclosures:
 - None


Review of previous meeting minutes:
Minutes from the 02 May 2023 meetings were reviewed. Weston Beal moved to 
approve the minutes. Bob Ross seconded. Without objection the minutes were 
approved.


Call for opens:
 none

AR review:
 - Weston will check with Atul on the idea of 2 error or warning messages for 
   loading AMI executables.
   sent email. waiting on Atul. Weston will follow-up.
 - Bob and Randy will create 2 bug reports for the EMD NC signal issues.
   done. Randy sent files with bug reports to show 2 different bugs.
   

New ARs:
 none

Discussion:
a.	IBISCHK720 – Test Randy’s 7.2 Files, Randy Wolff and Bob Ross work on two 
    BUG reports related to a Warning for a legal syntax and a Caution message 
	for an [EMD Pin List].
    
	Bob reviewed the BUG244 report to show the example of an NC signal_type in 
	EMD [Designator Pin List] that is legal but ibischk720 calls a warning. 
	The use of NC in signal_name is still a warning. Randy noted that it 
	should be allowed to have signal_name equal NC when the signal_type for 
	the same pin is NC, but not to have only signal_name as NC. That should be 
	a warning.

    Bob showed BUG245 report. Ibischk should issue an error if signal_type is 
	NC and the pin is used as a terminal in an [EMD Model]. This bug should 
	look for the signal_name connected to a terminal of any [EMD Model] and 
	issue an error. 

b.	Generate other executables, upload on IBIS Site
    - Done

c.	Pending BUG regarding Platform in AMI – Weston Beal will investigate 
    further and possibly propose two messages, one for simply loading the 
	library and another for architecture incompatibility.

    We are waiting for a response from Atul. Weston will follow-up later to 
	discuss this issue.

d.	Graham Kus from Mathworks reported a Warning message during architecture 
    compile with:
    “<file name> warning: variable ‘<variable name>’ set but not used 
	[-Wunused-but-set-variable]

    The group agrees that we need more information about the procedure that 
	created this warning. Mic Shaeder said that the warning looks like gcc 
	results, probably used on Linux. It would be a good idea to correct this 
	warning, but it doesn't seem to be a serious problem at this point.

e.	Quality Specification and checklist power-aware discussion (continuation)
    Weston said that he did not get feedback after the SPI IBIS summit 
	presentation. He is working on a final draft of the quality specification 
	with the level 4 updates. There is a question about interactions or 
	dependencies on [Merged Pins] with pin groups created in pin mapping or 
	IBIS version 7.0 and later signal_name groups. Mic commented that he has 
	checked some of this recently. Doing the check in C is difficult but easy 
	to check in a language that intrincsically supports sets. We don't know at 
	this point if ibischk already checks these conditions. We need to find out 
	if ibischk does this or not. The specification will include a requirement 
	if needed.


Tabled topics (no discussion without motion):
a.	Secure Development Lifecycle (SDL) investigation (Security fixes 
    continuation), (TSCHK2, BUG6)
b.	TSCHK2 V2.02 BUG5 and BUG6 (implementation on hold)


Weston moved to adjourn. Bob seconded. Without objection the meeting ended.

Meeting ended: 1:05 pm ET

Next meeting 23 MAY 2023