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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_20_ch_20_04.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
+-- $Revision: 1.1.1.1 $
+--
+-- ---------------------------------------------------------------------
+
+package ch_20_04 is
+
+ attribute cell_name : string;
+
+end package ch_20_04;
+
+
+
+entity flipflop is
+
+end entity flipflop;
+
+
+
+use work.ch_20_04.all;
+
+-- code from book:
+
+architecture std_cell of flipflop is
+
+ attribute cell_name of std_cell : architecture is "DFF_SR_QQNN";
+
+ -- . . . -- other declarations
+
+begin
+ -- . . .
+end architecture std_cell;
+
+-- end of code from book
+
+
+
+-- code from book:
+
+package model_utilities is
+
+ attribute optimize : string;
+ attribute optimize of model_utilities : package is "level_4";
+
+ -- . . .
+
+end package model_utilities;
+
+-- end of code from book