Subversion Repositories t400

-------------------------------------------------------------------------------

--

-- T420 ROM wrapper for lpm_rom.

--

-- $Id: t420_rom-lpm-a.vhd 179 2009-04-01 19:48:38Z arniml $

--

-- Copyright (c) 2006 Arnim Laeuger (arniml@opencores.org)

--

-- All rights reserved

--

-- Redistribution and use in source and synthezised forms, with or without

-- modification, are permitted provided that the following conditions are met:

--

-- Redistributions of source code must retain the above copyright notice,

-- this list of conditions and the following disclaimer.

--

-- Redistributions in synthesized form must reproduce the above copyright

-- notice, this list of conditions and the following disclaimer in the

-- documentation and/or other materials provided with the distribution.

--

-- Neither the name of the author nor the names of other contributors may

-- be used to endorse or promote products derived from this software without

-- specific prior written permission.

--

-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE

-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

-- POSSIBILITY OF SUCH DAMAGE.

--

-- Please report bugs to the author, but before you do so, please

-- make sure that this is not a derivative work and that

-- you have the latest version of this file.

--

-- The latest version of this file can be found at:

--      http://www.opencores.org/cvsweb.shtml/t400/

--

-------------------------------------------------------------------------------

architecture lpm of t420_rom is

  component lpm_rom

    generic (

      LPM_WIDTH           :     positive;

      LPM_WIDTHAD         :     positive;

      LPM_NUMWORDS        :     natural   := 0;

      LPM_ADDRESS_CONTROL :     string    := "REGISTERED";

      LPM_OUTDATA         :     string    := "REGISTERED";

      LPM_FILE            :     string;

      LPM_TYPE            :     string    := "LPM_ROM";

      LPM_HINT            :     string    := "UNUSED"

    );

    port (

      ADDRESS             : in  STD_LOGIC_VECTOR(LPM_WIDTHAD-1 downto 0);

      INCLOCK             : in  STD_LOGIC := '0';

      OUTCLOCK            : in  STD_LOGIC := '0';

      MEMENAB             : in  STD_LOGIC := '1';

      Q                   : out STD_LOGIC_VECTOR(LPM_WIDTH-1 downto 0)

    );

  end component;

  signal vdd_s : std_logic;

begin

  vdd_s <= '1';

  rom_b : lpm_rom

    generic map (

      LPM_WIDTH   => 8,

      LPM_WIDTHAD => 10,

      LPM_OUTDATA => "UNREGISTERED",

      LPM_FILE    => "rom_42x.hex"

    )

    port map (

      ADDRESS  => addr_i,

      INCLOCK  => ck_i,

      OUTCLOCK => ck_i,

      MEMENAB  => vdd_s,

      Q        => data_o

    );

end lpm;