RAM32x6D.vhd

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-- Company: 
-- Engineer: 
-- 
-- Create Date:    09:46:13 11/18/2013 
-- Design Name: 
-- Module Name:    RAM32x6D - Behavioral 
-- Project Name: 
-- Target Devices: 
-- Tool versions: 
-- Description: 
--
-- Dependencies: 
--
-- Revision: 
-- Revision 0.01 - File Created
-- Additional Comments: 
--
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--use IEEE.NUMERIC_STD.ALL;

-- Uncomment the following library declaration if instantiating
-- any Xilinx primitives in this code.
library UNISIM;
use UNISIM.VComponents.all;

entity RAM32x6D is
    Port ( wclk : in  STD_LOGIC;
                     rclk : in  STD_LOGIC;
           di : in  STD_LOGIC_VECTOR (5 downto 0);
           we : in  STD_LOGIC;
           wa : in  STD_LOGIC_VECTOR (4 downto 0);
           ra : in  STD_LOGIC_VECTOR (4 downto 0);
           ceReg : in  STD_LOGIC;
           do : out  STD_LOGIC_VECTOR (5 downto 0));
end RAM32x6D;

architecture Behavioral of RAM32x6D is
signal ram_do : std_logic_vector(5 downto 0) := (others => '0');

begin
process(rclk)
begin
    if(rclk'event and rclk = '1')then
        if(ceReg = '1')then
            do <= ram_do;
        end if;
    end if;
end process;
RAM32M_inst : RAM32M
   generic map (
      INIT_A  => X"0000000000000000",   -- Initial contents of A port
      INIT_B  => X"0000000000000000",   -- Initial contents of B port
      INIT_C  => X"0000000000000000",   -- Initial contents of C port
      INIT_D  => X"0000000000000000")    -- Initial contents of D port
   port map (
      DOA  => ram_do(1 downto 0), -- Read port A 2-bit output
      DOB  => ram_do (3 downto 2), -- Read port B 2-bit output
      DOC  => ram_do(5 downto 4), -- Read port C 2-bit output
      DOD  => open, -- Read/Write port D 2-bit output
      ADDRA  => ra,   -- Read port A 5-bit address input
      ADDRB  => ra,   -- Read port B 5-bit address input
      ADDRC  => ra,   -- Read port C 5-bit address input
      ADDRD  => wa,   -- Read/Write port D 5-bit address input
      DIA  => di(1 downto 0), -- RAM 2-bit data write input addressed by ADDRD,
                  -- read addressed by ADDRA
      DIB  => di(3 downto 2), -- RAM 2-bit data write input addressed by ADDRD,
                  -- read addressed by ADDRB
      DIC  => di(5 downto 4), -- RAM 2-bit data write input addressed by ADDRD,
                  -- read addressed by ADDRC
      DID  => "00", -- RAM 2-bit data write input addressed by ADDRD,
                  -- read addressed by ADDRD
      WCLK  => wclk,  -- Write clock input
      WE  => we       -- Write enable input
   );


end Behavioral;