Re: Numeric_Std_TextIO Was Ben Cohen's thread on Numeric_Unsigned/Signed/Extra

Subject: Re: Numeric_Std_TextIO Was Ben Cohen's thread on Numeric_Unsigned/Signed/Extra
From: Jim Lewis (jim@synthworks.com)
Date: Thu Feb 21 2002 - 11:14:34 PST

I support Ben's proposal for supporting textio for unsigned and signed
 if we put textio in a separate packages.  Numeric_Std_Textio?
Historically textio stuff has caused issues with synthesis tools.

I believe this stuff is already proposed for std_logic_1164.  If it is not,
I would like it to be considered for that also.

Cheers,
Jim Lewis
 

-----Original Message-----
From: VhdlCohen@aol.com [mailto:VhdlCohen@aol.com]
Sent: Wednesday, January 23, 2002 2:14 PM
To: Jayaram Bhasker; mench@mench.com; peter@ashenden.com.au
Cc: siwg@eda.org
Subject: Numeric_Unsigned/Signed/Extra suggestions for next packages
 
I would like to contribute and participate in the defintion of next versions of Numeric packages.  Below are some suggestions that I would lke to recommend:

Numeric_Std:
-- add the following
-- a la package STD_LOGIC_TEXTIO style,
procedure READ(L:inout LINE; VALUE:out SIGNED);
procedure READ(L:inout LINE; VALUE:out SIGNED; GOOD: out BOOLEAN);
procedure WRITE(L:inout LINE; VALUE:in SIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);
    procedure READ(L:inout LINE; VALUE:out UNSIGNED);
procedure READ(L:inout LINE; VALUE:out UNSIGNED; GOOD: out BOOLEAN);
procedure WRITE(L:inout LINE; VALUE:in UNSIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);
    -- hex
procedure HREAD(L:inout LINE; VALUE:out SIGNED);
procedure HREAD(L:inout LINE; VALUE:out SIGNED; GOOD: out BOOLEAN);
procedure HWRITE(L:inout LINE; VALUE:in SIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);

procedure HREAD(L:inout LINE; VALUE:out UNSIGNED);
procedure HREAD(L:inout LINE; VALUE:out UNSIGNED; GOOD: out BOOLEAN);
procedure HWRITE(L:inout LINE; VALUE:in UNSIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);

-- Octal
procedure OREAD(L:inout LINE; VALUE:out SIGNED);
procedure OREAD(L:inout LINE; VALUE:out SIGNED; GOOD: out BOOLEAN);
procedure OWRITE(L:inout LINE; VALUE:in SIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);

procedure OREAD(L:inout LINE; VALUE:out UNSIGNED);
procedure OREAD(L:inout LINE; VALUE:out UNSIGNED; GOOD: out BOOLEAN);
procedure OWRITE(L:inout LINE; VALUE:in UNSIGNED;
JUSTIFIED:in SIDE := RIGHT; FIELD:in WIDTH := 0);

  -- Since the image attribute does not support vector types, add the following
    -- bit string
  function Image(In_Image : Signed) return String;
  function Image(In_Image : UnSigned) return String;

  -- hex
  function HexImage(In_Image : Signed) return String;
  function HexImage(In_Image : UnSigned) return String;

  -- decimal
  function DecImage(In_Image : Signed) return String;
  function DecImage(In_Image : UnSigned) return String;

  -- octal
  function OctImage(In_Image : Signed) return String;
  function OctImage(In_Image : UnSigned) return String;

Ben

---------------------------------------------------------------------------
Ben Cohen     Publisher, Trainer, Consultant    (310) 721-4830
http://www.vhdlcohen.com/                 vhdlcohen@aol.com
Author of following textbooks:
* Real Chip Design and Verification Using Verilog and VHDL, 2002 isbn 0-9705394-2-8
* Component Design by Example ",  2001 isbn  0-9705394-0-1
* VHDL Coding Styles and Methodologies, 2nd Edition, 1999 isbn 0-7923-8474-1
* VHDL Answers to Frequently Asked Questions, 2nd Edition, isbn 0-7923-8115
------------------------------------------------------------------------------

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