2013_MeetingAug1 < P1076

P1076 Web>Vhdl2019MeetingMinutes>2013_MeetingAug1 (2020-02-17, JimLewis) (raw view)EditAttach
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---+ P1076 August 1, 2013 Meeting Minutes
---++ Attendees:
   * Main.JimLewis * Main.DavidBishop * Main.PeterFlake * Main.RyanHinton * Main.JarekKaczynski

---++ Agenda:
   * Check closure on AI from review lists.
   * Review items in the [[http://www.eda.org/twiki/bin/view.cgi/P1076/Vhdl2019CollectedRequirements][collected requirements list]]
   * Review [[IssueScreening][ISAC issues and Bugzilla]]
---++ Math Package Bugs
   * Floating Point: Conversion to FP from Signed Fixed Point - to_float 
      * Most negative signed fixed point does not get translated correctly - returns 0 instead
      * fixed on fphdl site
   * Fixed Point Package: Add_Carry procedure <br /> 
      * For signed and unsigned fixed point, the carry out is wrong (returns wrong value)
      * Can do: (Carry_sl, A_sfixed) &lt;= A_sfixed + 1 ;
   * Floating and Fixed Point Package: ?/= 
      * Used not ?=
      * Instead of 'U' you get 'X'
   * Fixed Point Documentation 
      * Sizing rules on fixed point reciprocal is incorrect. Code is correct
      * Updated on FPHDL page - see FAQ at bottom is a list of bugs and corrected documentation
   * fixed on fphdl site
   * Currently many vendors pulling files from FPHDL page 
      * When vendors switch to using generic version, they are likely to pull the version from IEEE and have bugs.
---++ Math Package Upgrades
   * IEEE 754/854 updates added 3 rounding routines
   * Decimal floating point within a binary number 
      * binary floating point has rounding issues
      * .1 added to itself 10 times will yield a rounding error
---++ New Proposals:
   * Generic Matrix Package - Ryan 
      * Using packages with type generics
   * Arbitrary Precision Floating Point- Ryan 
      * Action Item to Ryan to look into constraint methods.
---++ Review of old lists
   * MP E2 - Eliminate passive statement restriction on entities 
      * Like package/package body, may cause issues for encryption
      * May complicate analysis process.
      * Without having an architecture name, would cause issues for configurations, ... 
         * Block statements require a name
      * Recommendation: Drop
---++ New Items
   * Configure entity instances - AI: Andy Jones.
---++ Action Items:
   * Action Item to Ryan to look into constraint methods for type real.
---++ Review and Approve Meeting Minutes:
   * Motion: Peter 2nd:Ryan (2nd half) / David (first half)
---++ Next Meeting Date (proposed):

Thursday August 29, 8 am Pacific
Topic revision: r3 - 2020-02-17 - 15:36:12 - JimLewis
P1076