// // Copyright (c) 2001 Steve Williams // // 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 // /* * The $depost system task takes the inputs a depositible object and a * value to deposit. The $deposit works like a blocking assignment, so * the target takes the value right away. * * This example tests the $deposit on a wire object. What that means is * that the wire takes on the deposited value, but that value doesn't * stick if its normal input changes. */ module main ; reg in; wire test = in; initial begin in = 1'b0; #1 if (test !== 1'b0) begin $display("FAILED -- test starts out as %b", test); //$finish; end $deposit(test, 1'b1); #1 if (test !== 1'b1) begin $display("FAILED -- test after deposit is %b", test); $finish; end in = 1'bz; #1 if (test !== 1'bz) begin $display("FAILED -- test after input is %b", test); $finish; end $display("PASSED"); end endmodule