// // Copyright (c) 1999 Peter Monta (pmonta@imedia.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 // module main; reg c; reg [3:0] a,b; wire [3:0] d; assign d = c ? a : b; initial begin a = 4'd5; b = 4'd6; c = 0; #1; if (d!==4'd6) begin $display("FAILED"); $finish; end c = 1; #1; if (d!==4'd5) begin $display("FAILED"); $finish; end $display("PASSED"); end endmodule