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/*
* Copyright (c) 2003 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
*
* $Id: onehot16_tb.v,v 1.1 2003/03/31 01:35:05 stevewilliams Exp $
*/
/*
* Exhaustive check of all the subtract results.
*/
module main;
wire [15:0] out;
reg [3:0] A;
onehot16 dut(.out(out), .A(A));
reg error = 0;
integer adx;
initial begin
A = 0;
for (adx = 0 ; adx < 16 ; adx = adx + 1) begin
A = adx;
#1 $write("onehot(%b): %b", A, out);
if (out !== (1 << adx)) begin
$display(" ERROR");
error = 1;
end else begin
$display(" OK");
end
end // for (adx = 0 ; adx < 256 ; adx = adx + 1)
if (error == 0)
$display("PASSED");
else
$display("FAILED");
end // initial begin
endmodule // main
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