aboutsummaryrefslogtreecommitdiff
path: root/tests/soc_simple_display/test.v
blob: 75c2b36733419737bf80fbc514eb75eca8145c6e (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
`default_nettype none
`timescale 1ns/1ns

`include "messages.vh"

`ifndef SIMULATION
 `error_SIMULATION_not_defined
; /* Cause syntax error */
`endif

module soc_test();
   wire [9:0] image_writes;

   reg 	      clock_100mhz;
   reg 	      reset;

   wire       led1;
   wire       led2;

   soc_with_peripherals
     #(
       .FONT_FILE("../../design/font.mem"),
       .EMBEDDED_ROM_FILE("instructions.mem")
       ) soc
       (
	.clock_100mhz(clock_100mhz),

	.button1(!reset),
	.button2(1'b1),

	.led1(led1),
	.led2(led2),

	.image_writes(image_writes)
	);

   integer     i;

   initial begin
      reset <= 1;
      clock_100mhz <= 0;

      for (i = 0; i < 5_000_000; i++) begin
	 #5;

	 if (clock_100mhz)
	   reset <= 0;

	 clock_100mhz <= ~clock_100mhz;
      end

      if (led1)
	`MSG(("error: stack machine in soc hasn't finished working in 25ms"));
      else
	`MSG(("error: nothing got displayed in 25ms"));
   end

   always @ (image_writes) begin
      if (image_writes)
	$finish;
   end
endmodule // soc_test