library IEEE; use IEEE.std_logic_1164.all; entity struct_dffe is port ( d: in std_logic; clk: in std_logic; en: in std_logic; q: out std_logic ); end struct_dffe; use work.primitive.all; architecture instance of struct_dffe is begin ff: dffe port map ( d => d, clk => clk, en => en, q => q ); end instance;