/* * Copyright (c) 2001 Stephen Williams (steve@icarus.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 [3:0] test; initial begin /* A zero count repeat by it self is not allowed by the standard, test = {0{1'b1}}; if (test !== 4'b0000) begin $display("FAILED -- {0{1'b1} == %b", test); $finish; end but it can be used in a valid concatenation (1364-2005). */ test = {{0{1'b1}}, 1'b0}; if (test !== 4'b0000) begin $display("FAILED -- {0{1'b1} == %b", test); $finish; end test = {1{1'b1}}; if (test !== 4'b0001) begin $display("FAILED -- {1{1'b1} == %b", test); $finish; end test = {2{1'b1}}; if (test !== 4'b0011) begin $display("FAILED -- {2{1'b1} == %b", test); $finish; end test = {3{1'b1}}; if (test !== 4'b0111) begin $display("FAILED -- {3{1'b1} == %b", test); $finish; end test = {4{1'b1}}; if (test !== 4'b1111) begin $display("FAILED -- {4{1'b1} == %b", test); $finish; end test = {5{1'b1}}; if (test !== 4'b1111) begin $display("FAILED -- {5{1'b1} == %b", test); $finish; end $display("PASSED"); end // initial begin endmodule // main