main_test.v

   1 /*
   2  * Copyright 2018 Jacob Lifshay
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in all
  12  * copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  *
  22  */
  23 `timescale 1ns / 100ps
  24
  25 module main_test;
  26
  27         // Inputs
  28         reg clk;
  29         reg switch_2;
  30         reg switch_3;
  31
  32         // Outputs
  33         wire [7:0] vga_r;
  34         wire [7:0] vga_g;
  35         wire [7:0] vga_b;
  36         wire vga_hsync;
  37         wire vga_vsync;
  38         wire vga_blank;
  39         wire vga_pixel_clock;
  40         wire led_1;
  41         wire led_3;
  42
  43
  44         // Instantiate the Unit Under Test (UUT)
  45         main uut (
  46                 .clk(clk),
  47                 .vga_r(vga_r),
  48                 .vga_g(vga_g),
  49                 .vga_b(vga_b),
  50                 .vga_hsync(vga_hsync),
  51                 .vga_vsync(vga_vsync),
  52                 .vga_blank(vga_blank),
  53                 .vga_pixel_clock(vga_pixel_clock),
  54                 .switch_2(switch_2),
  55                 .switch_3(switch_3),
  56                 .led_1(led_1),
  57                 .led_3(led_3)
  58         );
  59
  60         initial begin
  61                 // Initialize Inputs
  62                 $dumpvars;
  63                 clk = 0;
  64                 switch_2 = 0;
  65                 switch_3 = 0;
  66
  67                 // Add stimulus here
  68
  69         forever #10 clk = ~clk;
  70         end
  71
  72     reg [7:0] r;
  73     reg [7:0] g;
  74     reg [7:0] b;
  75
  76     always @(posedge vga_pixel_clock) begin
  77         r = vga_r;
  78         g = vga_g;
  79         b = vga_b;
  80     end
  81
  82 endmodule
  83