-- 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_14_fg_14_12.vhd,v 1.2 2001-10-26 16:29:35 paw Exp $
-- $Revision: 1.2 $
--
-- ---------------------------------------------------------------------

library ieee;  use ieee.std_logic_1164.all;

               entity DRAM_4M_by_4 is
                 port ( a :  in std_logic_vector(0 to 10);
                        d :  inout std_logic_vector(0 to 3);
                        cs, we, ras, cas : in std_logic );
               end entity DRAM_4M_by_4;


               architecture chip_function of DRAM_4M_by_4 is
               begin
                 d <= (others => 'Z');
               end architecture chip_function;


-- code from book

               library chip_lib;  use chip_lib.all;

               configuration down_to_chips of memory_board is

                 for chip_level

                   for bank_array

                   for nibble_array

                   for a_DRAM : DRAM
                   use entity DRAM_4M_by_4(chip_function);
               end for;

               end for;

               end for;

               -- . . .    -- configurations of other component instances

               end for;

               end configuration down_to_chips;

-- end code from book