1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
-- Copyright (C) 2001 Bill Billowitch.
-- Some of the work to develop this test suite was done with Air Force
-- support. The Air Force and Bill Billowitch assume no
-- responsibilities for this software.
-- This file is part of VESTs (Vhdl tESTs).
-- VESTs is free software; you can redistribute it and/or modify it
-- 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.
-- VESTs 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 VESTs; if not, write to the Free Software Foundation,
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-- ---------------------------------------------------------------------
--
-- $Id: tc3159.vhd,v 1.2 2001-10-26 16:29:52 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
ENTITY c05s03b00x00p16n01i03159ent IS
END c05s03b00x00p16n01i03159ent;
ARCHITECTURE c05s03b00x00p16n01i03159arch OF c05s03b00x00p16n01i03159ent IS
begin
L : block
-- Define resolution function for SIG:
function RESFUNC( S : BIT_VECTOR ) return BIT is
begin
for I in S'RANGE loop
if (S(I) = '1') then
return '1';
end if;
end loop;
return '0';
end RESFUNC;
-- Define the signal.
subtype RBIT is RESFUNC BIT;
signal SIG : RBIT bus;
-- Use the implicit disconnect specification here.
-- Define the GUARD signal.
signal GUARD : BOOLEAN := FALSE;
BEGIN
-- Define the guarded signal assignment.
L1: block
begin
SIG <= guarded '1';
end block L1;
TESTING: PROCESS
variable ShouldBeTime : TIME;
BEGIN
-- 1. Turn on the GUARD, verify that SIG gets toggled.
GUARD <= TRUE;
ShouldBeTime := NOW;
wait on SIG;
assert( SIG = '1' ) severity FAILURE;
assert( ShouldBeTime = NOW ) severity FAILURE;
-- 2. Turn off the GUARD, verify that SIG gets turned OFF.
GUARD <= FALSE;
ShouldBeTime := NOW;
wait on SIG;
assert( SIG = '0' ) severity FAILURE;
assert( ShouldBeTime = NOW ) severity FAILURE;
assert NOT( SIG = '0' and ShouldBeTime = NOW )
report "***PASSED TEST: c05s03b00x00p16n01i03159"
severity NOTE;
assert ( SIG = '0' and ShouldBeTime = NOW )
report "***FAILED TEST: c05s03b00x00p16n01i03159 - Default disconnect specification test failed."
severity ERROR;
-- Define a second driver for SIG, just for kicks.
-- Should never get invoked. Not have an effect on the value.
SIG <= '0' after 10 ns;
wait;
END PROCESS TESTING;
end block L;
END c05s03b00x00p16n01i03159arch;
|
