8bitworkshop/test/cli/verilog/t_rnd.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2003 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0

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

   input clk;
   reg 	 _ranit;

   reg [2:0] a;
   reg [33:0] wide;
   reg 	      unused_r;

   initial _ranit = 0;

   always @ (posedge clk) begin : blockName
      begin	// Verify begin/begin is legal
	 unused_r <= 1'b1;
      end
      begin end	// Verify empty is legal
   end

   wire one = 1'b1;
   wire [7:0] rand_bits = 8'b01xx_xx10;

   always @ (posedge clk) begin
      if (!_ranit) begin
	 _ranit <= 1;
	 //
	 a = 3'b1xx;
	 wide <= 34'bx1_00000000_xxxxxxxx_00000000_xxxx0000;
	 if (one !== 1'b1) $stop;
	 if ((rand_bits & 8'b1100_0011) !== 8'b0100_0010) $stop;
	 //
	 $write("*-* All Finished *-*\n");
	 $finish;
      end
   end

   // verilator lint_off UNUSED
   wire _unused_ok = |{1'b1, wide};
   // verilator lint_on  UNUSED

endmodule