Project

General

Profile

Download (1.86 KB) Statistics
| Branch: | Tag: | Revision:
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_09_fg_09_01.vhd,v 1.2 2001-10-26 16:29:34 paw Exp $
23
-- $Revision: 1.2 $
24
--
25
-- ---------------------------------------------------------------------
26

    
27
-- not in book
28

    
29
package alu_types is
30

    
31
  constant data_width : positive := 32;
32

    
33
end package alu_types;
34

    
35

    
36
package io_types is
37

    
38
  constant data_width : positive := 32;
39

    
40
end package io_types;
41

    
42

    
43
entity controller_system is
44
end entity controller_system;
45

    
46
-- end not in book
47

    
48

    
49

    
50
library ieee;  use ieee.std_logic_1164.all;
51
use work.alu_types.all, work.io_types.all;
52

    
53
architecture structural of controller_system is
54

    
55
  alias alu_data_width is work.alu_types.data_width;
56
  alias io_data_width is work.io_types.data_width;
57

    
58
  signal alu_in1, alu_in2,
59
    alu_result : std_logic_vector(0 to alu_data_width - 1);
60
  signal  io_data : std_logic_vector(0 to io_data_width - 1);
61
  -- . . .
62

    
63
  -- not in book
64
  -- following should not analyze: data_width not directly visible
65
  -- constant test : positive := data_width;
66
  -- end not in book
67

    
68
begin
69

    
70
  -- . . .
71

    
72
end architecture structural;
(163-163/510)