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-- 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_fg_18_05.vhd,v 1.2 2001-10-26 16:29:36 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------
entity fg_18_05_a is
end entity fg_18_05_a;
architecture writer of fg_18_05_a is
begin
process is
type integer_file is file of integer;
file data_file : integer_file open write_mode is "coeff-data";
begin
write(data_file, 0);
write(data_file, 1);
write(data_file, 2);
write(data_file, 3);
write(data_file, 4);
write(data_file, 5);
write(data_file, 6);
write(data_file, 7);
write(data_file, 8);
write(data_file, 9);
write(data_file, 10);
write(data_file, 11);
write(data_file, 12);
write(data_file, 13);
write(data_file, 14);
write(data_file, 15);
write(data_file, 16);
write(data_file, 17);
write(data_file, 18);
wait;
end process;
end architecture writer;
entity fg_18_05 is
end entity fg_18_05;
architecture test of fg_18_05 is
begin
process is
-- code from book (in text)
type integer_vector is array (integer range <>) of integer;
-- end code from book
-- code from book (Figure 18-5)
impure function read_array ( file_name : string; array_length : natural )
return integer_vector is
type integer_file is file of integer;
file data_file : integer_file open read_mode is file_name;
variable result : integer_vector(1 to array_length) := (others => 0);
variable index : integer := 1;
begin
while not endfile(data_file) and index <= array_length loop
read(data_file, result(index));
index := index + 1;
end loop;
return result;
end function read_array;
-- end code from book
-- code from book (in text)
constant coeffs : integer_vector := read_array("coeff-data", 16);
-- end code from book
begin
wait;
end process;
end architecture test;
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