File: t_assert_implication.v

package info (click to toggle)
verilator 4.038-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 29,596 kB
  • sloc: cpp: 90,585; perl: 15,101; ansic: 8,573; yacc: 3,626; lex: 1,616; makefile: 1,101; sh: 175; python: 145
file content (58 lines) | stat: -rw-r--r-- 975 bytes parent folder | download
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
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2019 by Peter Monsson.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/
   // Inputs
   clk
   );

   input clk;
   integer cyc; initial cyc=1;

   Test test (/*AUTOINST*/
              // Inputs
              .clk                      (clk));

   always @ (posedge clk) begin
      if (cyc!=0) begin
         cyc <= cyc + 1;
         if (cyc==10) begin
            $write("*-* All Finished *-*\n");
            $finish;
         end
      end
   end

endmodule

module Test
  (
   input clk
   );

`ifdef FAIL_ASSERT_1
   assert property (
     @(posedge clk)
     1 |-> 0
   ) else $display("[%0t] wrong implication", $time);
`endif

   assert property (
     @(posedge clk)
     1 |-> 1
   );

   assert property (
     @(posedge clk)
     0 |-> 0
   );

   assert property (
     @(posedge clk)
     0 |-> 1
   );

endmodule