67 lines
1.7 KiB
Verilog
67 lines
1.7 KiB
Verilog
`begin_keywords "1364-2005"
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/*
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* Copyright (c) 2005 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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/* tern7.v
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* This tests types.
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*/
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module main;
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reg b, c, d, e;
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wire a = b ? c : (d&e);
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reg [4:0] tmp;
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reg ref;
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initial begin
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// Do an exaustive scan of the possible values.
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for (tmp = 0 ; tmp < 16 ; tmp = tmp + 1) begin
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b <= tmp[0];
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c <= tmp[1];
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d <= tmp[2];
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e <= tmp[3];
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ref = tmp[0] ? tmp[1] : (tmp[2]&tmp[3]);
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#1 if (ref !== a) begin
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$display("FAILED -- a=%b, b=%b, c=%b, d=%b, e=%b",
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a, b, c, d, e);
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$finish;
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end
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end // for (tmp = 0 ; tmp < 16 ; tmp = tmp + 1)
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b <= 0;
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c <= 1;
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d <= 1;
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e <= 0;
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#1 if (a !== 1'b0) begin
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$display("FAILED (1)");
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$finish;
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end
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e <= 1;
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#1 if (a !== 1'b1) begin
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$display("FAILED (2)");
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$finish;
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end
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$display("PASSED");
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end
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endmodule // main
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`end_keywords
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