FA.vhd

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-- Company: 
-- Engineer: 
-- 
-- Create Date:    18:18:13 10/21/2012 
-- Design Name: 
-- Module Name:    FA - 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 FA is
Port ( A : in  STD_LOGIC;
           B : in  STD_LOGIC;
			  Cin : in  STD_LOGIC;
           S : out  STD_LOGIC;
           Cout : out  STD_LOGIC);
end FA;

architecture Behavioral of FA is

begin

S <= A xor B xor Cin;
Cout <= (Cin and (A xor B)) or (A and B);

end Behavioral;