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+LIBRARY IEEE;
+USE IEEE.STD_LOGIC_1164.ALL;
+USE IEEE.STD_LOGIC_UNSIGNED.ALL;
+
+entity multiplexer_8_2 is
+ port (A0, A1 : in std_logic_vector(7 downto 0); S : in std_logic; Y : out std_logic_vector(7 downto 0));
+end multiplexer_8_2;
+
+architecture behaviour of multiplexer_8_2 is
+begin
+ Y <= A0 when S = '0' else A1;
+end behaviour;