66 lines
1.3 KiB
Coq
66 lines
1.3 KiB
Coq
|
//
|
||
|
|
// 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 - Verify glitch doesn't propagate.
|
||
|
|
//
|
||
|
|
// D:
|
||
|
|
|
||
|
|
module main ();
|
||
|
|
|
||
|
|
reg a;
|
||
|
|
reg error;
|
||
|
|
wire c;
|
||
|
|
reg d;
|
||
|
|
|
||
|
|
assign c = a;
|
||
|
|
always @(c)
|
||
|
|
#5 d = c;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
always @(posedge d)
|
||
|
|
error <= 1'b1;
|
||
|
|
|
||
|
|
initial
|
||
|
|
begin
|
||
|
|
/*
|
||
|
|
$dumpfile("/root/testsuite/dump.vcd");
|
||
|
|
$dumpvars(0,main);
|
||
|
|
$dumpon;
|
||
|
|
*/
|
||
|
|
a =1'b0;
|
||
|
|
error = 1'b0;
|
||
|
|
#10;
|
||
|
|
|
||
|
|
a = 1'b1;
|
||
|
|
# 3;
|
||
|
|
a = 1'b0;
|
||
|
|
# 10;
|
||
|
|
|
||
|
|
if(error)
|
||
|
|
$display("FAILED");
|
||
|
|
else
|
||
|
|
$display("PASSED");
|
||
|
|
#5;
|
||
|
|
$finish ;
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
endmodule
|