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+
+-- Copyright (C) 2002 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
+
+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