MINUTES OF VHDL ANALOG SUB-PAR GROUP IN SAN FRANCISCO CA. 6/21/91 Document Number VIFANL-001 July 19, 1991 Mark Brown IBM Hwy. 52 and 37th. St. NW. Dept29M/Bldg.040-2 Rochester, MN 55901 CONTENTS ________ Overview 1 General Discussions 1 Selection of chair and vice-chair(s) 1 Development process 1 Scope of work 3 Work items for the next meeting 3 APPENDIX A. ATTENDEES 5 Contents ii OVERVIEW ________ The meeting was held at the San Francisco Marriott in San Francisco CA. the afternoon of 6/21/91. A list of the members in attendance is attached to this document. The primary goal of this meeting was to organize a group under the VASG to develop extensions to the 1076 VHDL language that address analog electrical design issues. The result of this meeting generated various work items for various members of the group. GENERAL DISCUSSIONS ___________________ The proposed agenda for the meeting was as follows: o Selection of chair and vice-chair(s) o Development process o Scope of work o Work items for the next meeting SELECTION OF CHAIR AND VICE-CHAIR(S) The meeting began by opening the floor for nominations for chair and vice- chair. I was nominated and voted in as chair. Kevin Nolan from Analogy was nominated and voted in as North American vice-char. It was suggested that since Robert Cottrell from LSI in the UK. agreed to be the European contact for this effort, that he be elected to the position of European vice-chair. I took it as a work item for me to see if Robert would accept this position. DEVELOPMENT PROCESS There was general agreement that the development process that we should use to develop the language extensions should be the same one used for the 92 restandardization work which is as follows: 1 +-----------------------+ | Requirements Submittal| +-----------------------+ | V +-----------------------+ | Requirements Analysis | +-----------------------+ | +-------------------------+ | | | V V | +-----------------------+ +-------------------------+ | Language Design | | Language Design Review | +-----------------------+ +-------------------------+ | | A | | | | +-------------------------+ | +-------------------------+ | | | V V | +-----------------------+ +-------------------------+ | Prototype | | Prototype Review | +-----------------------+ +-------------------------+ | | A | | | V +-------------------------+ +-----------------------+ | Complete Documentation| +-----------------------+ | V +-----------------------+ | Submit for Balloting | +-----------------------+ | V +-----------------------+ | Respond to Negative | | Ballots | +-----------------------+ | V +-----------------------+ | Submit to REVCOM | +-----------------------+ We then discussed the coordination of this PAR with the SCC 30 group. Our conclusion was that the PAR should be "coordinated" not "cosponsored" with the SCC 30 group. 2 SCOPE OF WORK Al Gilman gave the group a brief report on the status of the MHDL work that Intermetrics is doing. This language has an emphasis on high frequency, spatial and frequency domain modelling. This was an area that the group gen- erally agreed we didn't want to touch (with a 10 meter pole). We then began a discussion of exactly what the scope of our work should be. We started out with some base assumptions: 1. Base language is the 92 version of 1076. 2. Goal is to create a DELTA language. (Don't change existing constructs) 3. Concentrate on time domain mixed-mode description and simulation. o Leave frequency domain alone for now. From these assumptions we developed three possibilities for the scope of our work: 1. Formalize the foreign simulator interface requirement for the 92 restand- ardization work for continuous time simulation. 2. Develop mixed-mode behavior capability by extending a subset of VHDL to continuous time modelling. This effectively partitions a design into dis- crete sections of continuous time and discrete time behavior. It will simplify the elaboration process for simulation builders. 3. Develop mixed-mode behavior capability by creating one language that can contain a mixture of discrete and continuous time behavior constructs. After further discussion, we concluded that our goal should be to: 1. Accomplish either item 2 or 3. Which specific one will be determined based on the initial analysis of the requirements. 2. Take item 1 back to the 92 restandardization group as a design require- ment (It turns out that it currently is a DR). A vote was taken to affirm this requirement. The result was unanimously in favor. WORK ITEMS FOR THE NEXT MEETING In order to start the requirements process off, Kevin Nolan agreed to chair the requirements analysis team. The following are the agreed-to work items to be completed by the next meeting along with the person(s) responsible: 1. Prepare a white paper dealing with scope item #1, describing what should be included in a continuous time <=> discrete time interface. This paper will be presented to the language design team of the 92 restandardization group by 7/22/91. (Bill Hanna and Mark Brown) 3 2. Complete and submit sub-PAR. (Mark Brown with John Hines and Stan Krolikoski, review by Al Lowenstein) 3. Gather current requirements and put out call for more requirements and participation. (Kevin Nolan, Robert Cottrell and Mark Brown) 4. Create a project plan with schedules. (Mark Brown) 5. Come up with a catchy name and acronym for the group (everyone) 4 APPENDIX A. ATTENDEES ______________________ NAME ADDRESS MARK BROWN IBM Hwy. 52 and 37th. St. NW. Dept.29M / Bldg.040-2 Rochester, MN. 55901 Tele: (507)-253-4001 Fax: (507)-253-1979 Email: brownm@ibm.com KEVIN NOLAN Analogy Inc. Email: uunet!analogy!kevin AL LOWENSTEIN PCA Email: a.lowenstein@ieee.org BILL HANNA McDonnel Douglas Email: hanna%vaxecl@mdcgwy.mdc.com ALFRED GILMAN Intermetrics Inc. 4733 Bethesda Ave. Bethesda, MD. 20814 Tele: (301)-657-3775 Email: gilman@i2wash.com ROBERT HILLMAN Rome Lab USAF Email: hillmanr@rl.af.mil JEAN MERMET IMT Technopole de Chateau - Gombert 13451 Marseille Cedex 13 - France Tele: 33-91054402 Fax: 33-91054343 Appendix A. Attendees 5 MIKE DUKES WL/ELED Wright-Patterson AFB OH. 45433-6543 Tele: (513)-255-8626 Email: dukes@etd2.el.wpafb.af.mil Appendix A. Attendees 6