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: ch_18_ch_18_10.vhd,v 1.2 2001-10-26 16:29:36 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity ch_18_10 is
end entity ch_18_10;
----------------------------------------------------------------
architecture test of ch_18_10 is
begin
process is
use std.textio.all;
variable L : line;
-- code from book:
type speed_category is (stopped, slow, fast, maniacal);
variable speed : speed_category;
-- end of code from book
begin
speed := stopped;
-- code from book:
write ( L, speed_category'image(speed) );
-- end of code from book
writeline(output, L);
speed := slow;
write ( L, speed_category'image(speed) );
writeline(output, L);
speed := fast;
write ( L, speed_category'image(speed) );
writeline(output, L);
speed := maniacal;
write ( L, speed_category'image(speed) );
writeline(output, L);
-- code from book:
readline( input, L );
speed := speed_category'value(L.all);
-- end of code from book
wait;
end process;
end architecture test;
|
