-------------------------------------------------------
--
LIBRARY ieee;   USE ieee.std_logic_1164.all;

entity TICK_TOCK is
    generic ( PERIOD : time );
    port ( clk: out std_logic);
end TICK_TOCK;

LIBRARY ieee;   USE ieee.std_logic_1164.all;
architecture BEHAVIOR of TICK_TOCK is
begin
    clock_gen : process 
    begin
        clk <= '1';
        wait for PERIOD/2;
        clk <= '0';
        wait for PERIOD/2;
    end process clock_gen;
end architecture BEHAVIOR;



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