-- 8-bit Identity Comparator -- uses 1993 std VHDL library IEEE; use IEEE.Std_logic_1164.all; entity HCT688 is port(Q, P : in std_logic_vector(7 downto 0); GBAR : in std_logic; PEQ : out std_logic); end HCT688; architecture VER1 of HCT688 is begin PEQ <= '0' when ((To_X01(P) = To_X01(Q)) and (GBAR = '0')) else '1'; end VER1;