82. JK Flip-Flop with Enable

module jk_ff_enable (
    input  CLK,
    input  EN,
    input  J,
    input  K,
    output reg Q
);
    always @(posedge CLK) begin
        if (EN) begin
            case ({J, K})
                2'b01 : Q <= 1'b0;
                2'b10 : Q <= 1'b1;
                2'b11 : Q <= ~Q;
                default : Q <= Q;
            endcase
        end
    end
endmodule