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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_09_ch_09_03.vhd,v 1.2 2001-10-26 16:29:34 paw Exp $
+-- $Revision: 1.2 $
+--
+-- ---------------------------------------------------------------------
+
+package system_types is
+
+ -- code from book
+
+ type system_status is (idle, active, overloaded);
+
+ -- end code from book
+
+end package system_types;
+
+
+
+
+entity ch_09_03 is
+
+end entity ch_09_03;
+
+
+----------------------------------------------------------------
+
+
+architecture test of ch_09_03 is
+
+ -- code from book
+
+ alias status_type is work.system_types.system_status;
+
+ -- end code from book
+
+begin
+
+
+ process_09_2_b : process is
+
+ variable status : status_type := idle;
+
+ begin
+ wait for 10 ns;
+ status := active;
+ wait for 10 ns;
+ status := overloaded;
+
+ wait;
+ end process process_09_2_b;
+
+
+end architecture test;