P1076 February 16, 2012 Meeting Minutes

Attendees:

• JimLewis * PeterFlake * HansTiggeler * DavidBishop * MartinThompson * RyanHinton * JarekKaczynski

Agenda:

• Approve January 26 Meeting Minutes. Motion: PeterFlake 2nd: HansTiggeler
• How to handle ISAC tasks?
• Fork Join
• Std_logic_arith
• Call for proposals for new items
• Review items in the collected requirements list
• Review requirements lists from VHDL-200X/Accellera effort
  • Assign owners to raw items and work toward proposals
• Login to get the Dial-in Information
• Sign-in on the Whiteboard

ISAC - How to handle requested language clarifications & reported issues

• Current web page at: http://www.eda.org/isac/
• Propose that we bring page over to twiki and meet on issues asynchronously
• AI Jim: Create ISAC page on TWIKI

Fixed and Floating Point Algorithmic Packages

• Working on doc and will post it soon.
• Preliminary: http://www.eda.org/twiki/pub/P1076/MeetingWhiteboard/fixed_alg_ug.pdf
• Deterministic Approximations of trig: http://www.ganssle.com/approx/approx.pdf
• Keep math real heritage, but having matlab aliases would be good.
• David to upload packages and doc and post a link
• This is an independent effort from the matrix packages.
• Some dependencies on the complex math

Concurrent Communication - subsumes fork and join

• AI Jim: Start proposal on synchronization primitives
• Emails on reflector by Jerry and Jim

Interfaces

• Protected types + internal public signals
• Think of the object that holds a protected type as a handle rather than as a variable - as you cannot assign to an object with a protected type

DPI

• Peter updated the proposal per previous meeting minutes

std_logic_arith

• Interfacing std_logic_arith and numeric_std is awkward
• It would be facilitated if std_logic_arith.unsigned and std_logic_arith.signed were an alias to numeric_std.unsigned and numeric_std.signed.
• This would simplify structural code, but not RTL code.
• To simplify both in RTL code may result in different behavior wrt warnings and errors, which may be too much change.
• First step, propose change to vendor owner.
• If that does not take, propose adoption by IEEE
• Propose that it is donated to IEEE or alternately propose that vendor makes a change

Action Items:

• Jim: Proposals for concurrent communication, interfaces, std_logic_arith
• Jim: create ISAC page on TWIKI

Next Meeting Date(s):

Thursday March 1, 8 am Pacific

Thursday March 15, 8 am Pacific