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
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
-- 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: ap_a_ap_a_03.vhd,v 1.2 2001-10-26 16:29:33 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity ap_a_03 is
end entity ap_a_03;
library ieee; use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
architecture test of ap_a_03 is
begin
b1 : block is
-- code from book
type unsigned is array ( natural range <> ) of std_logic;
type signed is array ( natural range <> ) of std_logic;
-- end code from book
begin
end block b1;
b2 : block is
-- code from book
signal a: integer := 0;
signal b: signed (4 downto 0 );
-- end code from book
begin
a <= 0, 5 after 10 ns, -5 after 20 ns, 8 after 30 ns;
-- code from book
b <= To_signed ( a, b'length );
-- end code from book
process (b) is
begin
-- code from book
if std_match ( b, "0-000" ) then
-- . . .
-- end code from book
report "b matches";
else
report "b does not match";
end if;
end process;
end block b2;
end architecture test;
|
