累加累乘器

`timescale 1ns/10ps

module inout_test();
parameter ratio = 2;
reg [15:0]num  ;
reg [31:0]save_add_v;
reg [31:0]save_multi_v;

initial
    begin
        save_add_v = 100;
        save_multi_v = 100;
        forever begin
            save_add_v = save_add_v + ratio;
            save_multi_v = save_multi_v * ratio;
            #1;
            $display("This is a test program");
            $display("save_add_v:%d,save_multi_v:%d" , save_add_v , save_multi_v);
            if($time >4)
                $finish;
          end
    end
endmodule;

输出：