Date: Feb. 28, 1995 From: Will Hobbs (503) 696-4369, fax (503) 696-4210 Will_Hobbs@ccm.jf.intel.com XTG Modeling Manager, Intel Corp., Chairperson, IBIS Open Forum Intel Corporation 5200 NE Elam Young Pkwy, Hillsboro, OR 97124 USA and Derrick Duehren (503) 696-4299, fax (503) 696-4904 Derrick_Duehren@ccm.jf.intel.com Intel Program Manager, IBIS Secretary Subject: Minutes from IBIS Open Forum Meeting 2/24/95 To: Apple Computer Duane Talsahashi ARPA Randy Harr AT&T Global Info Solutions Dave Moxley* Anacad Steffen Rochel Ansoft Henri Maramis Atmel Corporation Dan Terry Cadence Design Sandeep Khanna, C. Kumar Cadlab Ralf Bruning Contec Dileep Divekar* Digital Equipment Corp. Barry Katz EIA Patty Rusher High Design Technology Michael Smith, Dr. Ing. Cosso HP Palo Alto Tom Langdorf HP EESof Karl Kachigan, Henry Wu HyperLynx Kellee Crisafulli* IBM Jay Diepenbrock, Joseph Flanigan IBM-Motorola alliance Lynn Warriner, John Burnett INCASES Werner Rissiek, Olaf Rethmeier Integrated Silicon Systems Eric Bracken Intel Corporation Stephen Peters*, Don Telian, Will Hobbs* Arpad Muranyi*, Derrick Duehren* Interconnectix, Inc. Bob Ross* Intergraph Ian Dodd, David Wiens, Walter Katz IntuSoft Charles Hymowitz Mentor Graphics Ravender Goyal, Greg Doyle Meta-Software Mei Wong, You-Pang Wei, John Sliney MicroSim Arthur Wong National Semiconductor Syed Huq*, Raj Raghuraum, Atul Agarwal* NEC Hiroshi Matsumoto North Carolina State U. Steve Lipa, Michael Steer OptEM Engineering, Inc. Benny Leveille, Ken Ehn Pacific Numerix Paul K. U. Wang PC Ware Paul Munsey, Ron Neville Quad Design Jon Powell* Quantic Labs Mike Ventham Racal-Redac John Berrie Symmetry Martin Walker Synopsys, Logic Modeling G. Bill Lattin Texas Instruments Bob Ward Thomson-CSF/SCTF Jean Lebrun UniCAD Canada Ltd. Stephen Lum Zeelan Technology George Opsahl, Hiro Moriyasu CC: Intel Corporation Randy Wilhelm, Jerry Budelman, Intel IBIS team In the list above, attendees at the meeting are indicated by *. Upcoming Meetings: The bridge numbers for future IBIS teleconferences are listed below: Date Bridge Number Reservation # 3/17/95 (916) 356-9999 461603 4/7/95 (916) 356-9999 461605 4/28/95 (916) 356-9999 461609 All meetings are 8:00 AM to 10:00 AM Pacific Time (16:00 to 18:00 UTC). We try to have agendas out 7 days before each open forum and meeting minutes out within 7 days after. When you call into the meeting, ask for the IBIS Open Forum hosted by Will Hobbs and give the reservation number. NOTE: "AR" = Action Required. ------------------------------------------------------------------------------ Check-in, Intros, Announcements There were no new participants. There were no corrections made to last month's minutes. Will reported that Meta Software has licensed the Parser. AR Derrick: Note on the charter document that National Semiconductor has paid for the parser and inform Patti Rusher at EIA. [DONE] Conference Management Systems requested (and Will approved) a $500 payment to CMS for their services over the last two years. This amount is less than half what they typically charge. CMS had been providing the service free with the expectation that we would eventually become a paying client. CMS is now transferring our remaining funds ($1,400) to our EIA account. There were no new agenda items. Press Updates: Integrated Systems Design, March `95, pg 12 and pg 84 EETimes,2/6, Pg 8 Electronic news, 2/6, pg 52 New Models Available: Syed posted two 2.1 models, unchecked with parser because Michael does not have the parser. ds26c31.ibs, an RS-422 Quad Diff Line Driver ds26c32.ibs, an RS-422 Quad Diff Line Receiver Note: Bob Ross checked the files with the 2.1 parser and they passed. AR Jon -- get new parser binary to Michael. We discussed the need for a "Beta" directory in the vhdl.org library with a strong disclaimer file. Jon suggested having some means of enabling people to post models for evaluation. Will suggested indicating in the IBIS file name that the file is experimental/not final. Possibly, the "Beta" directory could be a publicly read/write. AR Michael -- Please make a proposal for this capability [Michael has agreed to make a proposal]. Progress toward enlisting new IC vendors Mike Ventham reported via email to Derrick that he has requested contact information from VLSI in Phoenix, but has not received anything yet. Dave Moxley is working with ASIC suppliers, and has gotten preliminary IBIS models from two of them. The files are not passing the parser yet, but Dave is working with them to get them right. Kellee is working with National and Xylinx. He expects Xylinx to have a set of 2000, 3000, 4000 Xylinx IBIS models for the vhdl.org library in a few months. We discussed the potential need for a separate reflector or newsgroup for IBIS users. [Update, many messages bouncing around the reflector on this topic.] Golden Parser 2.1 progress and release date Many did not receive their copies. Will will reissue the parser and asked if everyone could validate the GP by Friday 3/3/95. The approved parser is needed to get the EIA spec approval process going. Jon reported that he can do cross-compilation of the parser for all but DOS platforms and will update us next week. AR Will -- Resend the Rev 4 Golden Parser to the 13 licensees. [DONE -- Will apologizes. His admin. had prepared the disks to go out and then went on a short medical leave -- it was forgotten.] AR Derrick/Will -- Post Golden Parser 2.1 release approval process. [DONE. The 13 licensees will discuss and vote via email. No vote (silence) will be considered a YES vote.] Status of EIA affiliation Will and Derrick met with Patti Rusher of the EIA yesterday. Patti is OK with everything in our charter. EIA is now handling our finances. All checks can now be made to "EIA". Any payments still sent to CMS will be forwarded to the EIA. Patti will be sending a letter (which Will and Derrick have reviewed) to those in the roster document. The fee structure we decided upon is included. We discussed the cost of sending out a hardcopy of the spec (and possibly a floppy). Kellee volunteered to put together an IBIS "starter kit" with the spec, parser executable, overview, cookbook, and sample models, which we can make available as a floppy with the hardcopy spec. Suggested list price of $20 for spec only, $50 for starter kit. We need a formal process to respond to balloting comments. Bob Ross suggested we have a subcommittee draft a response, have the whole committee review the comment, and then respond officially. Kellee volunteer to chair the committee, and Bob Ross and Jon Powell will participate. Kellee wants to make sure the responses are professional so the commenter feels acknowledged and we continue to get their support. Rev 2.1 updates o S2IBIS 2.1 Bob Ross reported that Michael Steer has a student assigned to work on the conversion utility, but the funding has not yet arrived. Bob Ross suggested that they modularize the program before expanding it further. o Cookbook It could easily be a 3 person-month effort to redo this book. It may be more practical to make smaller changes and additions to the existing book. Syed is creating an internal book for generating models from bench measurement. It is in rough draft form now. Syed will check to see if there is any confidential information included. He thinks that he'll be able to make the material available Kellee volunteered to coordinate the Cookbook update/Starter Kit. Bob Ross and Syed will help. Bob thinks he may have tech pubs help available, though he can't commit yet. Syed put an article in HTML form, and posted it for Mosaic in NSC. Rumor is that the next version of Word can export HTML directly. If we had a vhdl.org IBIS home page, we could link to companies that support IBIS, etc. AR Kellee -- post information on public domain Mosaic software [DONE]. o Overview This document could be rolled into the cookbook. BIRD 25.2 Will reported that Intel has discussed this BIRD internally. Intel's position is that "C_comp is considered an independent variable. This is because C_comp includes bonding pad capacitance, which does not necessarily track fabrication process variations. The conservative approach to using IBIS data will associate large C_comp values with slow, weak models, and the small C_comp values with fast, strong models." (The low value should go in the Min. column.) This means that we have 4 potential models out of each set of data. In 3.0, we may want to add a keyword that can indicate which C_comp goes with the first ramp and vice-versa, if the model provider so chooses. The consensus is that C_comp is magnitude. AR Bob R. -- Add a sentence indicating that "This is an independent variable." [DONE] Bob Ross stepped through each paragraph of the BIRD 25.2. He suggested that portions may be good for inclusion in the new cookbook. Roll-call vote taken. BIRD 25.3 approved unanimously (including the quoted text above.). AR Bob -- Repost as approved BIRD 25.3. [DONE] We discussed options for rolling this BIRD into the spec. If we put this BIRD into the spec, the spec will need to be rolled to 2.2, the parser will also need to be updated. We also identified a need for a formal Golden Parser bug list that identifies everything that the parser does not check. Two issues are left on the table: First, should we roll in this BIRD before sending the 2.1 Spec out for EIA vote or wait to roll it in along with any other changes that come out of the voting process. Second, should be upgrade the parser to catch all 2.1 issues that it does not currently check for? Jon volunteered to do coding work on the GP. Wrap-up, Next Meeting Plans Our next meeting is a teleconference 3/17/95. Suggested Topics: o Tim Schreyer's findings on Diode effects. o Directions for MCM. ============================================================================== NOTES If you know of someone new who wants to join the e-mail reflector (ibis@vhdl.org), send e-mail to ibis-request@vhdl.org. Check the pub/ibis directory on vhdl.org for more information on previous discussions and results. You can get on via ftp anonymous, "guest" login from telnet or dial-in (415-335-0110), or send an email request to the automatic archive server, archive@vhdl.org. ==============================================================================