File: t_timing_clkgen2.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 (36 lines) | stat: -rw-r--r-- 848 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
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2022 by Antmicro Ltd.
// SPDX-License-Identifier: CC0-1.0

`ifdef TEST_VERBOSE
 `define WRITE_VERBOSE(args) $write args
`else
 `define WRITE_VERBOSE(args)
`endif

module t;
   logic clk = 0;
   logic clk_inv;
   int   cnt1 = 0;
   int   cnt2 = 0;

   always #4 clk = ~clk;
   always @(posedge clk) begin
       cnt1 <= cnt1 + 1;
       `WRITE_VERBOSE(("[%0t] clk (%b)\n", $time, clk));
   end

   assign #2 clk_inv = ~clk;
   initial forever begin
       @(posedge clk_inv) cnt2++;
       `WRITE_VERBOSE(("[%0t] clk_inv (%b)\n", $time, clk_inv));
   end

   initial #81 begin
       if (cnt1 != 10 && cnt2 != 10) $stop;
       $write("*-* All Finished *-*\n");
       $finish;
   end
endmodule