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+
+-- Copyright (C) 2000-2002 The University of Cincinnati.
+-- All rights reserved.
+
+-- This file is part of VESTs (Vhdl tESTs).
+
+-- UC MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
+-- SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+-- IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
+-- OR NON-INFRINGEMENT. UC SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
+-- LICENSEE AS A RESULT OF USING, RESULT OF USING, MODIFYING OR
+-- DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
+
+-- By using or copying this Software, Licensee agrees to abide by the
+-- intellectual property laws, and all other applicable laws of the U.S.,
+-- and the terms of this license.
+
+-- You may modify, distribute, and use the software contained in this
+-- package under the terms of the "GNU GENERAL PUBLIC LICENSE" version 2,
+-- June 1991. A copy of this license agreement can be found in the file
+-- "COPYING", distributed with this archive.
+
+-- 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: bouncing_ball.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+ENTITY bouncing_ball IS
+END ENTITY bouncing_ball;
+
+ARCHITECTURE simple OF bouncing_ball IS
+
+ QUANTITY v: real;
+ QUANTITY s: real;
+ CONSTANT G: real := 9.81;
+
+ CONSTANT Air_Res: real := 0.1;
+
+BEGIN
+
+ b1:BREAK v => 0.0, s => 30.0; -- announce discontinuity and reset
+
+ b2:BREAK v => -0.7*v WHEN NOT(s'above(0.0));
+
+ velocity: v == s'dot ;
+
+ acceleration: v'dot == -G;
+
+END ARCHITECTURE simple;