JK_FLIP-FLOP (Behavioral)

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

entity JK_FF is

    Port ( clk, clr, pr, J,K :in STD_LOGIC ;

           Q ,Q_n : inout  STD_LOGIC );

end JK_FF;

architecture Behavioral of JK_FF is

begin

process (clk, clr, pr, J,K)

begin

if pr = '0' then Q<='1';Q_n<='0';

elsif clr ='0' then Q<='0';Q_n<='1';

elsif clk='0' and clk'event then

      if (J='0' and K='0') then Q<=Q; Q_n<=Q_n;

       elsif (J='0' and K='1') then Q<='0';Q_n<='1';

       elsif (J='1' and K='0') then Q<='1';Q_n<='0';

       else Q<=Q_n;Q_n<=Q ;

      end if;

end if;

end process;

end Behavioral;