//
// Copyright (c) 1999 Steven Wilson (stevew@home.com)
//
//    This source code is free software; you can redistribute it
//    and/or modify it in source code form under the terms of the GNU
//    General Public License as published by the Free Software
//    Foundation; either version 2 of the License, or (at your option)
//    any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
//
//  SDW - Validate always wait (expression ) reg_lvalue = constant  ;


module main ;

reg [3:0] value1,value2,value3;

always wait (value1 == 4'h3) begin
                                value2 = 3     ;
                                #1 ;
                             end

initial
  begin
   value1 = 0;
   value2 = 0;
   value3 = 0;
   #2 ;
   if(value2 != 0)
       begin
         $display("FAILED - 3.1.8A always wait (expr) reg_lval = const (1);");
          value3 = 1;
       end
   value1 = 1;
   #2 ;
   if(value2 != 0)
       begin
         $display("FAILED - 3.1.8A always wait (expr) reg_lval = const (2);");
          value3 = 1;
       end
   value1 = 2;
   #2 ;
   if(value2 != 0)
       begin
         $display("FAILED - 3.1.8A always wait (expr) reg_lval = const (3);");
          value3 = 1;
       end
   value1 = 4'h3;
   #2;
   if(value2 != 3)
       begin
         $display("FAILED - 3.1.8A always wait (expr) reg_lval = const (4);");
          value3 = 1;
       end
   #10;
   if(value3 == 0)
       $display("PASSED");
   $finish ;
  end

endmodule