2015_MeetingMay14 < P1076

P1076 Web>Vhdl2019MeetingMinutes>2015_MeetingMay14 (2020-02-17, JimLewis) (raw view)EditAttach
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---+!! P1076 May 14, 2015 Meeting Minutes
---++!! Attendees:

* [[Main.LievenLemiengre]] * [[Main.JimLewis]] * [[Main.BrentHahoe][BrentHayhoe]] * [[Main.ErnstChristen]] * [[Main.DanielKho]]
---++!! Agenda:

%TOC%

---++ Meeting Agenda
   * Review Interfaces
   * Interface Proposals 
      * From VHDL-2008: [[http://www.eda.org/vhdl-200x/vhdl-200x-ft/proposals/ft17_composite_interface_mode.txt][ft17 interface brief - Jim's old stuff]] Longer Doc (but nn better than brief): [[http://www.eda.org/vasg/docs/Interfaces.pdf][ft17 with use cases]]
      * [[BlockInterfaces][Records with Directional Subtypes - Peter Flake]]
      * [[InterfaceConstructandPortModeConfigurations][Interface Construct and Port Mode Configurations - Brent]]
      * [[NewBusModeForBidirectionalPortSignals][Bus Mode]] - Could work with other proposals - defer to future rev
      * [[InterfaceAttributes][Interface Attributes - John Aasen]] can be adapted to work with other proposals
   * Interface Requirements 
      * Used on entity interface or subprogram interface
      * Support composite signals of some sort
      * ?Support composite signals with unconstrained elements (similar to ports)?
      * ?Support existing records?
      * VHDL AMS (terminals, quantities)
      * ?Shared Variables/ protected types?
      * ?Support generics? [[GenericTypes][Proposal to add generics to protected types]]
      * Support composition of interfaces - an interface can be made up of other interfaces
      * Issues with parsing: MyIfPort : MyIfMode [resolution function] MyIfType ; 
         * Can this be addressed with syntax of some sort: MyIfPort : &lt;MyIfMode&gt; MyIfType ;
      * What kind of object is an interface? Signal?
      * Composition directly on an interface
      * Decomposition of elements and type/class of object
      * Support conjugate and monitor 
         * modport slave is master'conjugate ;
      * Bidirectional connection support with multiple masters
      * Simple enough for basic stuff, but also support advanced
      * Can an interface be in an expression. Can we assign to a subset of elements of an interface?
      * ?Brent: Interface separate section? - with generic map and port map internally
      * Lieven: an interface looks alot like a component - however a component has specific direction 
         * Look at old OO docs that uses Entities as the basis for OO
         * To be interface like would need some direction control adaptability

   * Next Steps 
      * Review Requirements here
      * Review Referenced proposals (OO, ...)

---++ Review and Approve Meeting Minutes:
   * Motion: Brent 2nd:Ernst
---++ Next Meeting: Thursday [[2015_MeetingMay28][May 28, 2015]] 11 am Pacific
---+++ Previous Meeting: Thursday [[2015_MeetingApril30][April 30, 2015]]
Topic revision: r4 - 2020-02-17 - 15:36:15 - JimLewis
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