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library ieee;
use ieee.std_logic_1164.all;
entity case01 is
port (a : std_logic_vector (4 downto 0);
o : out std_logic);
end case01;
architecture behav of case01 is
begin
process (a)
begin
o <= '0';
case a is
when "00011" =>
o <= '1';
when "00110" | "00111" | "10001" =>
o <= '1';
when "00100" =>
when "01100" =>
o <= '1';
when "10000" =>
o <= '1';
when others =>
o <= '0';
end case;
end process;
end behav;
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