File: t_interface_virtual_opt.v

package info (click to toggle)
verilator 5.038-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 162,552 kB
  • sloc: cpp: 139,204; python: 20,931; ansic: 10,222; yacc: 6,000; lex: 1,925; makefile: 1,260; sh: 494; perl: 282; fortran: 22
file content (42 lines) | stat: -rw-r--r-- 823 bytes parent folder | download | duplicates (2)
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
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2023 by Antmicro Ltd.
// SPDX-License-Identifier: CC0-1.0

interface Bus;
   logic [7:0] data;
endinterface

class Cls;
   virtual Bus vbus;

   function void check(logic [7:0] data);
       if (vbus.data != data) $stop;
   endfunction
endclass

module t (clk);
   input clk;
   int cyc = 0;

   Bus bus();
   virtual Bus vbus;
   Cls obj;

   assign bus.data = 'hFA;

   always @(posedge clk) begin
      cyc <= cyc + 1;
      if (cyc == 1) begin
         obj = new;
         vbus = bus;
         obj.vbus = bus;
      end
      else if (cyc == 2) begin
         obj.check('hFA);
         $write("*-* All Finished *-*\n");
         $finish;
      end
   end
endmodule