P1076 May 28, 2015 Meeting Minutes

Attendees:

* Brent Hayhoe, ErnstChristen, LievenLemiengre, FarrellOstler, JimLewis, RyanHinton, Woody Johnson, DanielKho,

Agenda:

Meeting Agenda

• Continue to Review Interfaces from May 14, 2015
• Interface Requirements
  • Support RTL synthesis
  • Support Testbench
  • Bundle related data items/objects
    • No bundle wide operations - ie: assignments
  • Abstract behavior - potentially via subprograms
  • Simple - would allow support via translation
  • Views of an interface
  • Support generics
  • An entity supports multiple interfaces
  • Defaults for interfaces that will not prevent optimizations
  • Interfaces and/or bundles must work on subprograms

• Priorities
  • 1: Bundles for RTL
  • 2: Support everything that a ports support
  • 3: Interface with the kitchen sink

Reference Links

http://www.eda.org/twiki/bin/view.cgi/Sandbox/InterfaceConcepts

• Proposals:
  • Records with Directional Subtypes - Peter Flake
  • Add a "Bus" port mode for bidirectional port signals - Brian Drummond
  • Interface Construct and Port Mode Configurations - Brent Hayhoe
  • Interfaces: Packages as an Interface Construct - Jim Lewis
  • Protected Types with Public Signals - Jim Lewis
  • Protected Type: Shared Variables On Entity Interface - Jim Lewis
  • Record Introspection - Chris Higgs
  • Record Introspection & Indexing - Brent Hayhoe
  • Generics on Protected Types - Jim Lewis
  • IR2067 - Logical link interface abstraction - Martin Trautmann, analyzed: Peter Ashenden
  • IR2076 - a member attribute for records - Rickard Norberg
  • IR2089 - Directional Records - Andreas Doering, never analyzed
  • IEEE 200X FT-17 - Composite interface mode - Jim Lewis
  • IEEE 200X FT-14 & FT-15 - Arrays of unconstrained arrays and records with unconstrained arrays - Ryan Hinton

• Documents:
  • SUAVE Language Description - Peter Ashenden
  • Interfaces - Jim Lewis
  • Object Orientation Revisited - Peter Ashenden

• Email threads:
  • vhdl-200x: Requirements for VHDL Interfaces
  • vhdl-200x: Requirements for Interfaces
  • vhdl-200x: Re: Requirements for Interfaces, Part 1
  • vhdl-200x: Re: Requirements for Interfaces, Part 2
  • VHDL Interfaces (was RE: EXTERNAL: Re: vhdl-200x: VHDL enhancements wish list)
  • vhdl-200x: Directional records proposal
  • {Disarmed} Re: vhdl-200x: Directional records proposal
  • vhdl-200x: Records with diectional subtypes
  • vhdl-200x: Interfaces with normal, conjugated and monitor flavours

Review and Approve Meeting Minutes:

• Motion: Lieven 2nd: Brent

Next Meeting: Thursday June 11, 11 am Pacific

Previous Meeting: Thursday May 14, 2015