alu.vhd

用于视频运动图像编码的HUFFMAN编码

---------      电子系                 学号：J02301                姓名：张宗旺----
		
library ieee;
	use ieee.std_logic_1164.all;
	use ieee.std_logic_unsigned.all;
	use work.MYFUNCTION.all;
entity ALU is
	port(	A,B: in std_logic_vector(7 downto 0);
		CI:in std_logic;
		OP:in std_logic_vector(1 downto 0);	
		SUM: out std_logic_vector(7 downto 0));
		
end ALU;

architecture ALG of ALU is
begin
	
	OPORATION:process(A,B,CI,OP)
	begin 
		case OP is
		when "00" =>SUM<=ADD(A,B,CI);
		when "10" =>SUM<=SHIFT(A);
		when others =>SUM<=A;
		end case;
	end process;
end ALG;