shiftertest.vhd

用于视频运动图像编码的HUFFMAN编码

library ieee;
	use ieee.std_logic_1164.all;
	use ieee.std_logic_unsigned.all;
	use ieee.std_logic_arith.all;
	
	
entity SHIFTER_TEST is
	
end SHIFTER_TEST;

architecture  BENCH of SHIFTER_TEST is
	
	component SHIFTER
			port(	CLK:	in 	std_logic;
				RESET,LOAD:in std_logic;
				DIN:	in 	std_logic;
				DOUT:	out 	std_logic_vector(15 downto 0));
	end component;

	signal RESET,CLK,LOAD:std_logic:='0';
	signal DIN,SD :std_logic;
	signal DOUT:std_logic_vector(15 downto 0);
	
	for DUT: SHIFTER use entity work.SHIFTER(BEHAVIORAL);
	
begin
	DUT: SHIFTER port map(CLK,RESET,LOAD,DIN,DOUT);
	LOAD<=not LOAD after 500 ns;
	CLK<=not CLK after 50 ns;
	RESET<='1' after 80 ns;
	process
	begin
		DIN<='0';
		wait for 100 ns;	
		DIN<='1';
		wait for 200 ns;
		DIN<='0';
		wait for 100 ns;
		DIN<='1';
		wait for 100 ns;
	end process ;
	
end BENCH;