blob: 34d6d1843631ea11d65d2111902dc41508eeaa2f (
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
|
-- 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_06_ovfl-b.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
architecture behavioral of overflow_logic is
constant Tpd_in_out : time := 3 ns;
begin
ovf <= real_accumulator_ovf or imag_accumulator_ovf
or ( real_sum(21) xor real_sum(20) )
or ( real_sum(21) xor real_sum(19) )
or ( real_sum(21) xor real_sum(18) )
or ( real_sum(21) xor real_sum(17) )
or ( imag_sum(21) xor imag_sum(20) )
or ( imag_sum(21) xor imag_sum(19) )
or ( imag_sum(21) xor imag_sum(18) )
or ( imag_sum(21) xor imag_sum(17) ) after Tpd_in_out;
end architecture behavioral;
|