// // 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 casez/endcase w/ default module main (); reg error; reg [2:0] val1,val2; reg [2:0] result ; always @( val1 ) casez (val1) 5'b0000z: result = 0; 5'b001z0: result = 1 ; 5'b01zz0: result = 2; default: result = 4; endcase initial begin error = 0; val1 = 5'b0000z ; if(result !=0) begin $display("FAILED casez 3.10D - case (expr) lab1: "); error = 1; end val1 = 5'b001z0; if(result !=1) begin $display("FAILED casez 3.10D - case (expr) lab2: "); error = 1; end val1 = 5'b1zzzz; // Should get no-action - expr = 3'b011 if(result !=4) begin $display("FAILED casez 3.10D - case (expr) lab1: "); error = 1; end if(error == 0) $display("PASSED"); end endmodule // main