blob: 1307b47a07d57a8fd41a94bda2df4d483fa6b76c (
plain)
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
|
-- 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_03_ch_03_09.vhd,v 1.2 2001-10-26 16:29:37 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity ch_03_09 is
end entity ch_03_09;
----------------------------------------------------------------
architecture test of ch_03_09 is
begin
process_3_2_d : process is
-- code from book:
variable N : integer := 1;
--
constant C : integer := 1;
-- end of code from book
constant expression : integer := 7;
begin
-- code from book:
-- error: Case choice must be a locally static expression
-- case expression is -- example of an illegal case statement
-- when N | N+1 => -- . . .
-- when N+2 to N+5 => -- . . .
-- when others => -- . . .
-- end case;
--
case expression is
when C | C+1 => -- . . .
when C+2 to C+5 => -- . . .
when others => -- . . .
end case;
-- end of code from book
wait;
end process process_3_2_d;
end architecture test;
|
