`default_nettype none
module top (
    input wire clk,
    input wire signed [15:0] data_in,
    input wire signed [15:0] data_out
    );

    `ifdef COCOTB_SIM
        initial begin
            $dumpfile ("top.vcd");
            $dumpvars (0, top);
            #1;
        end
    `endif

    filter filter (.i(data_in), .o(data_out), .sys_clk(clk), .sys_rst(1'b0));

endmodule