CristalCaveGem » LustreC » Lustrec-Tests

-- 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_09_ch_09_04.vhd,v 1.2 2001-10-24 23:31:00 paw Exp $

-- $Revision: 1.2 $

--

-- ---------------------------------------------------------------------

package arithmetic_ops is

  -- code from book

  procedure increment ( bv : inout bit_vector;  by : in integer := 1 );

  procedure increment ( int : inout integer;  by : in integer := 1 );

  -- end code from book

end package arithmetic_ops;

package body arithmetic_ops is

  procedure increment ( bv : inout bit_vector;  by : in integer := 1 ) is

  begin

  end procedure increment;

  procedure increment ( int : inout integer;  by : in integer := 1 ) is

  begin

  end procedure increment;

end package body arithmetic_ops;

entity ch_09_04 is

end entity ch_09_04;

library stimulus;

use stimulus.stimulus_generators.all;

architecture test of ch_09_04 is

  -- code from book

  -- MTI bug mt017

  -- alias bv_increment is work.arithmetic_ops.increment [ bit_vector, integer ];

  alias int_increment is work.arithmetic_ops.increment [ integer, integer ];

  -- workaround to avoid MTI bug mt018

  -- alias "*" is "and" [ bit, bit return bit ];

  alias "*" is std.standard."and" [ bit, bit return bit ];

  -- alias "+" is "or" [ bit, bit return bit ];

  alias "+" is std.standard."or" [ bit, bit return bit ];

  -- alias "-" is "not" [ bit return bit ];

  alias "-" is std.standard."not" [ bit return bit ];

  -- end workaround

  alias high is std.standard.'1' [ return bit ];

  -- end code from book

  signal a, b, c, s : bit := '0';

  signal test_vector : bit_vector(1 to 3);

  signal test_high : bit := high;

begin

  -- code from book

  -- workaround to avoid MTI bug mt018

  -- s <= a * b + (-a) * c;

  s <= (a and b) or ((not a) and c);

  -- end workaround

  -- end code from book

  stimulus : all_possible_values ( bv => test_vector,

				   delay_between_values => 10 ns );

  (a, b, c) <= test_vector;

end architecture test;