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
98
99
|
-- 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: ch_04_ch_04_02.vhd,v 1.2 2001-10-26 16:29:33 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity ch_04_02 is
end entity ch_04_02;
----------------------------------------------------------------
architecture test of ch_04_02 is
begin
process_04_1_b : process is
-- code from book:
type symbol is ('a', 't', 'd', 'h', digit, cr, error);
type state is range 0 to 6;
type transition_matrix is array (state, symbol) of state;
variable transition_table : transition_matrix;
-- end of code from book
variable next_state : state;
-- code from book:
type point is array (1 to 3) of real;
type matrix is array (1 to 3, 1 to 3) of real;
variable p, q : point;
variable transform : matrix;
-- end of code from book
begin
next_state :=
-- code from book:
transition_table(5, 'd');
-- end of code from book
for i in 1 to 3 loop
for j in 1 to 3 loop
if i = j then
transform(i, j) := -1.0;
else
transform(i, j) := 0.0;
end if;
end loop;
end loop;
p := (1.0, 2.0, 3.0);
-- code from book:
for i in 1 to 3 loop
q(i) := 0.0;
for j in 1 to 3 loop
q(i) := q(i) + transform(i, j) * p(j);
end loop;
end loop;
-- end of code from book
wait;
end process process_04_1_b;
end architecture test;
|
