1
|
|
2
|
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
|
3
|
|
4
|
-- This file is part of VESTs (Vhdl tESTs).
|
5
|
|
6
|
-- VESTs is free software; you can redistribute it and/or modify it
|
7
|
-- under the terms of the GNU General Public License as published by the
|
8
|
-- Free Software Foundation; either version 2 of the License, or (at
|
9
|
-- your option) any later version.
|
10
|
|
11
|
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
|
12
|
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
13
|
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
14
|
-- for more details.
|
15
|
|
16
|
-- You should have received a copy of the GNU General Public License
|
17
|
-- along with VESTs; if not, write to the Free Software Foundation,
|
18
|
-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
19
|
|
20
|
-- ---------------------------------------------------------------------
|
21
|
--
|
22
|
-- $Id: ch_12_ch_12_03.vhd,v 1.2 2001-10-26 16:29:35 paw Exp $
|
23
|
-- $Revision: 1.2 $
|
24
|
--
|
25
|
-- ---------------------------------------------------------------------
|
26
|
|
27
|
-- code from book
|
28
|
|
29
|
entity reg is
|
30
|
generic ( width : positive );
|
31
|
port ( d : in bit_vector(0 to width - 1);
|
32
|
q : out bit_vector(0 to width - 1);
|
33
|
-- . . . );
|
34
|
-- not in book
|
35
|
other_port : in bit := '0' );
|
36
|
-- end not in book
|
37
|
end entity reg;
|
38
|
|
39
|
-- end code from book
|
40
|
|
41
|
|
42
|
architecture test of reg is
|
43
|
begin
|
44
|
q <= d;
|
45
|
end architecture test;
|
46
|
|
47
|
|
48
|
|
49
|
entity ch_12_03 is
|
50
|
|
51
|
end entity ch_12_03;
|
52
|
|
53
|
|
54
|
----------------------------------------------------------------
|
55
|
|
56
|
|
57
|
architecture test of ch_12_03 is
|
58
|
|
59
|
constant bus_size : positive := 16;
|
60
|
|
61
|
-- code from book
|
62
|
|
63
|
signal in_data, out_data : bit_vector(0 to bus_size - 1);
|
64
|
-- . . .
|
65
|
|
66
|
-- end code from book
|
67
|
|
68
|
|
69
|
begin
|
70
|
|
71
|
-- code from book
|
72
|
|
73
|
ok_reg : entity work.reg
|
74
|
generic map ( width => bus_size )
|
75
|
port map ( d => in_data, q => out_data, -- . . . );
|
76
|
-- not in book
|
77
|
other_port => open );
|
78
|
-- end not in book
|
79
|
|
80
|
-- end code from book
|
81
|
|
82
|
end architecture test;
|