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
|
-- Copyright (C) 2002 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
entity read_transform_write_data is
end entity read_transform_write_data;
architecture writer of read_transform_write_data is
begin
process is
type transform_file is file of real;
file initial_transforms : transform_file open write_mode is "transforms.ini";
begin
for i in 1 to 50 loop
write(initial_transforms, real(i));
end loop;
wait;
end process;
end architecture writer;
entity read_transform is
end entity read_transform;
architecture test of read_transform is
begin
process is
-- code from book (in text)
type transform_array is array (1 to 3, 1 to 3) of real;
variable transform1, transform2 : transform_array;
type transform_file is file of real;
file initial_transforms : transform_file open read_mode is "transforms.ini";
-- end code from book
-- code from book (in Figure)
procedure read_transform ( file f : transform_file;
variable transform : out transform_array ) is
begin
for i in transform'range(1) loop
for j in transform'range(2) loop
if endfile(f) then
report "unexpected end of file in read_transform - "
& "some array elements not read"
severity error;
return;
end if;
read ( f, transform(i, j) );
end loop;
end loop;
end procedure read_transform;
-- end code from book
begin
-- code from book (in text)
read_transform ( initial_transforms, transform1 );
read_transform ( initial_transforms, transform2 );
-- end code from book
wait;
end process;
end architecture test;
|
