Subversion Repositories mips_fault_tolerant

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-- Company: 

-- Engineer:     Lazaridis Dimitris

-- 

-- Create Date:    21:37:47 06/13/2012 

-- Design Name: 

-- Module Name:    Dm - 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 Dm is

port (

      clk    : in std_logic;

                rst : in std_logic;

      Alu_in :in std_logic_vector(31 downto 0);

                MDR_in : in std_logic_vector(31 downto 0);

                --op_code: in std_logic_vector(5 downto 0);

                MemWrite : in std_logic;

                MemRead : in std_logic;

                IorD : in std_logic;

                MDR_out : out std_logic_vector(31 downto 0)

      --E  : out std_logic_vector(1 downto 0) 

);

end Dm;

architecture Behavioral of Dm is

component dmem is

port (

               clk : in std_logic;

                                        rst : in std_logic;

                                        IorD : in std_logic;

                                        we : in std_logic_vector(3 downto 0);

               en : in std_logic_vector(3 downto 0);

               ssr : in std_logic_vector(3 downto 0);

               address : in std_logic_vector(10 downto 0);

               data_in : in std_logic_vector(31 downto 0);

               data_out : out std_logic_vector(31 downto 0)

                                        );

end component;

component DMcontrol is

port (

      --clk : in std_logic;

      --From_Alu : in std_logic_vector(31 downto 0);

                --op_code: in std_logic_vector(5 downto 0);

                MemRead: in std_logic;

                MemWrite : in std_logic;

                --IorD : in std_logic;

                --E : out std_logic_vector(1 downto 0);

                We_c : out std_logic_vector(3 downto 0);

                Re_c :out std_logic_vector(3 downto 0);

                Ssr_c:out std_logic_vector(3 downto 0)

);

end component;

signal We_c,Re_c,Ssr_c : std_logic_vector(3 downto 0);

begin

dmem_d:dmem port map(clk=>clk,rst=>rst,IorD=>IorD,we=>We_c,en=>Re_c,ssr=>Ssr_c,address=>Alu_in(10 downto 0),

                    data_in=>MDR_in,data_out=>MDR_out);

DMcont_d:DMcontrol port map(MemRead=>MemRead,MemWrite=>MemWrite,

                            We_c=>We_c,Re_c=>Re_c,Ssr_c=>Ssr_c);

end Behavioral;