Subversion Repositories mips_fault_tolerant

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-- Company: 

-- Engineer:       Lazaridis Dimitris

-- 

-- Create Date:    22:19:25 04/25/2012 

-- Design Name: 

-- Module Name:    Shift_mux - 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 Shift_mux is

Port

(

                A : in  STD_LOGIC_VECTOR (4 downto 0);

           Shamt : in  STD_LOGIC_VECTOR (4 downto 0);

           sv : in  STD_LOGIC;

                          lui : in  STD_LOGIC;

           Shamt_out : out  STD_LOGIC_VECTOR (4 downto 0)

);

end Shift_mux;

architecture Behavioral of Shift_mux is

begin

         Shamt_out <= "10000" when lui = '1' else

                                       Shamt when sv = '0'  else

                                           A when sv = '1'  else

                                                          "00000";

end Behavioral;