48 lines
1.2 KiB
Verilog
48 lines
1.2 KiB
Verilog
/*
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* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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module main;
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reg [7:0] x, y;
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initial begin
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x = -4;
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if (x !== 8'hfc) begin
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$display("FAILED -- x = -4 --> %b", x);
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$finish;
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end
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x = 4;
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if (x !== 8'h04) begin
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$display("FAILED");
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$finish;
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end
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y = -x;
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if (y !== 8'hfc) begin
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$display("FAILED -- y = -%b --> %b", x, y);
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$finish;
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end
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$display("PASSED");
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end // initial begin
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endmodule // main
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