// This here is a simple binary counter, you can change the size of the 
// output by exchanging all 3s with the bit-width you wish (-1)
module counter (
    input wire sig,
    input wire reset,
    output reg [3:0] out = 0
);

    reg [3:0] count = 0;

    always @(posedge sig or posedge reset) begin
        if (reset)
            count <= 0;
        else
            count <= count + 1;
    end

    always @(*) begin
        out = count;
    end
endmodule