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📄 mul48.vhd

📁 在gf(2^13)中
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-- Company: 
-- Engineer:
--
-- Create Date:    20:38:01 04/01/08
-- Design Name:    
-- Module Name:    mul48 - Behavioral
-- Project Name:   
-- Target Device:  
-- Tool versions:  
-- Description:
--
-- Dependencies:
-- 
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
-- 
--------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

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

entity mul48 is
	port(
	mul48_in:in std_logic_vector(12 downto 0);	  --msb_lsb
	mul48_out:out std_logic_vector(12 downto 0)
	);
end mul48;

architecture Behavioral of mul48 is

begin

mul48_out(0)<=mul48_in(11) xor mul48_in(1) xor mul48_in(0) xor mul48_in(2) xor mul48_in(3) xor mul48_in(4) xor mul48_in(5) xor mul48_in(10);
mul48_out(1)<=mul48_in(10) xor mul48_in(12) xor mul48_in(6);
mul48_out(2)<=mul48_in(11) xor mul48_in(0) xor mul48_in(7);
mul48_out(3)<=mul48_in(12) xor mul48_in(2) xor mul48_in(4) xor mul48_in(8) xor mul48_in(10) xor mul48_in(5) xor mul48_in(11) xor mul48_in(3);
mul48_out(4)<=mul48_in(10) xor mul48_in(6) xor mul48_in(12) xor mul48_in(2) xor mul48_in(9) xor mul48_in(1);
mul48_out(5)<=mul48_in(10) xor mul48_in(7) xor mul48_in(2) xor mul48_in(11) xor mul48_in(3);
mul48_out(6)<=mul48_in(11) xor mul48_in(3) xor mul48_in(8) xor mul48_in(4) xor mul48_in(12);
mul48_out(7)<=mul48_in(12) xor mul48_in(4) xor mul48_in(9) xor mul48_in(5);
mul48_out(8)<=mul48_in(5) xor mul48_in(6) xor mul48_in(0) xor mul48_in(10);
mul48_out(9)<=mul48_in(11) xor mul48_in(1) xor mul48_in(7) xor mul48_in(6) xor mul48_in(0);
mul48_out(10)<=mul48_in(1) xor mul48_in(12) xor mul48_in(8) xor mul48_in(2) xor mul48_in(0) xor mul48_in(7);
mul48_out(11)<=mul48_in(3) xor mul48_in(8) xor mul48_in(9) xor mul48_in(1) xor mul48_in(0) xor mul48_in(2);
mul48_out(12)<=mul48_in(9) xor mul48_in(1) xor mul48_in(2) xor mul48_in(10) xor mul48_in(3) xor mul48_in(0) xor mul48_in(4);


end Behavioral;

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