159 lines
3.7 KiB
Verilog
159 lines
3.7 KiB
Verilog
/*
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* Copyright (c) 2000 Intrinsity, Inc.
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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 test_notif1 ( );
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reg gnd, vdd, x, z;
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wire t0, t1, t2, t3, t4, t5, t6, t7,
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t8, t9, ta, tb, tc, td, te, tf;
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reg failed;
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wire StH, StL;
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assign (strong1, highz0) StH = 1'bx;
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assign (highz1, strong0) StL = 1'bx;
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notif1 b0 ( t0, gnd, gnd);
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notif1 b1 ( t1, gnd, vdd);
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notif1 b2 ( t2, gnd, x);
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notif1 b3 ( t3, gnd, z);
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notif1 b4 ( t4, vdd, gnd);
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notif1 b5 ( t5, vdd, vdd);
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notif1 b6 ( t6, vdd, x);
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notif1 b7 ( t7, vdd, z);
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notif1 b8 ( t8, x, gnd);
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notif1 b9 ( t9, x, vdd);
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notif1 ba ( ta, x, x);
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notif1 bb ( tb, x, z);
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notif1 bc ( tc, z, gnd);
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notif1 bd ( td, z, vdd);
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notif1 be ( te, z, x);
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notif1 bf ( tf, z, z);
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initial begin
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//
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// work around initial state assignment bug
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failed = 0;
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assign gnd = 1'b1;
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assign vdd = 1'b0;
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assign x = 1'b1;
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assign z = 1'b1;
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#10;
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assign gnd = 1'b0;
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assign vdd = 1'b1;
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assign x = 1'bx;
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assign z = 1'bz;
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#10;
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if (t0 !== z)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:z", gnd, gnd, t0 );
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end
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if (t1 !== 1)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:1", gnd, vdd, t1 );
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end
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if (t2 !== StH)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:StH", gnd, x, t2 );
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end
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if (t3 !== StH)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:StH", gnd, z, t3 );
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end
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if (t4 !== 1'bz)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:z", vdd, gnd, t4 );
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end
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if (t5 !== 0)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:0", vdd, vdd, t5 );
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end
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if (t6 !== StL)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:StL", vdd, x, t6 );
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end
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if (t7 !== StL)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:StL", vdd, z, t7 );
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end
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if (t8 !== 1'bz)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:z", x, gnd, t8 );
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end
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if (t9 !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", x, vdd, t9 );
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end
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if (ta !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", x, x, ta );
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end
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if (tb !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", x, z, tb );
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end
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if (tc !== 1'bz)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:z", z, gnd, tc );
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end
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if (td !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", z, vdd, td );
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end
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if (te !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", z, x, te );
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end
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if (tf !== 1'bx)
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begin
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failed = 1;
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$display ("FAILED: notif1 s:%d g:%d d:%d expected:x", z, z, tf );
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end
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if (failed == 0)
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$display ("PASSED");
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end
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endmodule
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