`timescale 1ns / 1ps
`default_nettype none


module adder_tb();

  parameter BUS_WIDTH = 8;
  parameter COUNT_EXPONENT = 3; //for 16 iputs

  logic [7:0] vals_in[7:0];
  logic [10:0] sum_out;

  big_adder uut ( .vals_in(vals_in),
                  .sum_out(sum_out));

  //initial block...this is our test simulation
  initial begin
    $dumpfile("adder.vcd"); //file to store value change dump (vcd)
    $dumpvars(0,adder_tb); //store everything at the current level and below
    $display("Starting Sim"); //print nice message at start
    for (int i=0; i<8; i = i+1)begin
      vals_in[i] = i;
    end
    #10;
    $display("Sum of all values is %d!",sum_out);
    vals_in[0] = 10;
    $display("Adding ten more.");
    #10;
    $display("Sum of all values is %d!",sum_out);
    $display("Finishing Sim"); //print nice message at end
    $finish;
  end
endmodule
`default_nettype wire