Import vests testsuite

10 files changed, 733 insertions, 0 deletions

diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/bouncing_ball.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/bouncing_ball.ams
new file mode 100644
index 000000000..b646742fc
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/bouncing_ball.ams
@@ -0,0 +1,55 @@
+
+-- 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;
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/lorenz_chaos.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/lorenz_chaos.ams
new file mode 100644
index 000000000..97b3bcc57
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/lorenz_chaos.ams
@@ -0,0 +1,56 @@
+
+-- 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: lorenz_chaos.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+entity LorenzChaos is 
+end entity LorenzChaos; 
+
+architecture Chaotic of LorenzChaos is 
+
+    constant s: real := 10.0;    -- define equation parameters s,b,r 
+    constant b: real := 8.0/3.0; 
+    constant r: real := 28.0; 
+    quantity x: real;
+    quantity y: real;
+    quantity z: real;
+    
+begin 
+    -- set an initial condition to guarantee chaotic behaviour: 
+   br:break x=> y , y => 5.0, z => 25.0; 
+   br1:break when y'above(25.0);
+   
+    -- equation set: 
+    eq1:x == y-(x'dot/s); 
+    eq2:y == r*x-x*z-y'dot; 
+    eq3:z == (x*y -z'dot)/b;
+ 
+end architecture Chaotic; 
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/precharged_capacitor.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/precharged_capacitor.ams
new file mode 100644
index 000000000..d62c63a3e
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/precharged_capacitor.ams
@@ -0,0 +1,67 @@
+
+-- 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: precharged_capacitor.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+-- This is a model of discharging of a precharged capacitor
+-- Break statement has been used here to set the initial 
+-- value of the voltage to which the capacotor was charged
+-- authors: Shishir Agrawal
+--          Vikram
+--          Sanjiv Pandey
+
+PACKAGE electricalSystem IS
+    NATURE electrical IS real ACROSS real THROUGH Ground REFERENCE;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+    FUNCTION SQRT(X : real) RETURN real;
+    FUNCTION POW(X,Y : real) RETURN real;
+END PACKAGE electricalSystem;
+
+use work.electricalsystem.all;
+
+ENTITY RC IS
+END;
+
+ARCHITECTURE behav OF RC IS
+    TERMINAL n1,n2: ELECTRICAL;
+    QUANTITY v_in ACROSS i_in THROUGH  n1;
+    QUANTITY u_r ACROSS i_r THROUGH n1 TO n2;
+    QUANTITY u_c ACROSS i_c THROUGH n2;
+BEGIN
+
+
+    b1: BREAK  u_c => 0.5;       	--initvalue
+
+    e1: v_in == 0.0;      			--constant  voltage source
+    e2: i_r  == u_r  / 1000.0;      --resistor  equation
+    e3: i_c  == 1.0e-6 * u_c'dot;   --capacitor equation
+END;
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test123.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test123.ams
new file mode 100644
index 000000000..9d3e53e7b
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test123.ams
@@ -0,0 +1,82 @@
+
+-- Copyright (C) 2001-2002 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: test123.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test113.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : May 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+-- to check the correct implementation of the simultaneous if statement
+-- break and 'above is also used. it checks for the eqns v'=g*v**2 for 
+-- +g and -g.
+----------------------------------------------------------------------
+PACKAGE electricalSystem IS
+    NATURE electrical IS real ACROSS real THROUGH;
+    FUNCTION SIN(X : real) RETURN real;
+--    alias ground is electrical'reference;
+END PACKAGE electricalSystem;
+
+use work.electricalsystem.all;
+
+entity test is
+end entity test;
+
+architecture atest of test is
+quantity v : real;
+quantity s: real;
+constant g : real :=9.81;
+constant r : real:=1.02;
+
+begin
+
+break v=>0.0, s=>100.0;
+
+break v=>-v when not s'above(0.0);
+
+s'dot==v;
+
+if v>0.0 use
+   v'dot == -g+v*v*r;
+else
+   v'dot == -g-v*v*r;
+end use;
+
+end architecture atest;
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test133.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test133.ams
new file mode 100644
index 000000000..e97d77b03
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test133.ams
@@ -0,0 +1,78 @@
+
+-- Copyright (C) 2001-2002 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: test133.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test133.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : May 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+
+--this test checks the correctness of the break statement for a 
+-- quantity port declaration.
+-- LRM ref: 8.14
+----------------------------------------------------------------------
+
+PACKAGE electricalSystem IS
+    NATURE electrical IS real ACROSS real THROUGH ground reference;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+    FUNCTION SQRT(X : real) RETURN real;
+    FUNCTION POW(X,Y : real) RETURN real;
+        subtype voltage is real;
+
+END PACKAGE electricalSystem;
+
+use work.electricalSystem.all;
+
+entity test is 
+    generic (m: real := 1.0); 
+    port (quantity x: out voltage);  
+end entity test; 
+
+architecture atest of test is 
+--quantity x: real;
+quantity q: real;
+begin 
+    break x => 0.0, x'dot => 0.1; 
+    e1: q== x'dot;
+    x'dot'dot == -1.0*( m*(x*x - 1.0)* x'dot); 
+
+end architecture atest;
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test134.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test134.ams
new file mode 100644
index 000000000..0f80d28c0
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test134.ams
@@ -0,0 +1,98 @@
+
+-- Copyright (C) 2001-2002 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: test134.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test151.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : May 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+-- this is a test to check the corretness of the implemntation of the break
+-- statement and also the use of quantity port of type voltage.
+-- this is a vco model which first sets the initial condition
+-- using a break statement. Then again, a break statement is applied to keep 
+-- the phase within 0-2pi. Thr output voltage eqn is obtained as vout and the 
+-- phase eqn as phase'dot.
+-- LRM ref: 8.14, 4.3.2.
+---------------------------------------------------------------------------------
+PACKAGE electricalSystem IS
+    SUBTYPE voltage is real;
+    NATURE electrical IS real ACROSS real THROUGH;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+    FUNCTION SQRT(X : real) RETURN real;
+    FUNCTION POW(X,Y : real) RETURN real;
+END PACKAGE electricalSystem;
+
+use work.electricalSystem.all;
+
+entity vco is 
+  generic( 
+          fc: real := 1.0e6;    -- VCO frequency at Vc 
+          df: real := 0.5e6;  -- [Hz/V], frequency characteristic slope 
+          Vc: voltage := 0.0 --  centre frequency input voltage 
+         ); 
+  port( quantity Vin: in voltage; 
+        terminal OutTerminal: electrical); 
+end entity VCO; 
+
+architecture avco of vco is 
+    constant TwoPi: real := 6.283118530718; -- 2pi 
+
+    quantity Phase : real; 
+
+    -- define a branch for the output voltage source 
+
+    quantity Vout across Iout through OutTerminal to electrical'reference; 
+
+begin 
+   -- use break to set the phase initial condition 
+   break Phase => 0.0; 
+
+   -- another break statement keeps the phase within 0.. 2pi 
+   break Phase => Phase mod TwoPi on Phase'above(TwoPi); 
+
+   -- phase equation 
+   Phase'dot == TwoPi*realmax(0.5E6, fc+(Vin-Vc)*df); 
+
+     -- output voltage source equation 
+     Vout == 2.5*(1.0+sin(Phase)); 
+
+end architecture avco; 
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test158.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test158.ams
new file mode 100644
index 000000000..f96b6f476
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test158.ams
@@ -0,0 +1,98 @@
+
+-- Copyright (C) 2001-2002 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: test158.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test134.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : June 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+-- this is a test to check the corretness of the implemntation of the break
+-- statement and also the use of quantity port of type voltage.
+-- this is a vco model which first sets the initial condition
+-- using a break statement. Then again, a break statement is applied to keep 
+-- the phase within 0-2pi. Thr output voltage eqn is obtained as vout and the 
+-- phase eqn as phase'dot.
+-- LRM ref: 8.14, 4.3.2.
+----------------------------------------------------------------------
+PACKAGE electricalSystem IS
+   -- SUBTYPE voltage is real;
+    NATURE electrical IS real ACROSS real THROUGH ground reference;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+    FUNCTION SQRT(X : real) RETURN real;
+    FUNCTION POW(X,Y : real) RETURN real;
+END PACKAGE electricalSystem;
+
+use work.electricalSystem.all;
+
+entity vco is 
+  generic( 
+          fc: real := 1.0e6;    -- VCO frequency at Vc 
+          df: real := 0.5e6;  -- [Hz/V], frequency characteristic slope 
+          Vc: voltage := 0.0 --  centre frequency input voltage 
+         ); 
+  port( quantity Vin: in real; 
+        terminal OutTerminal: electrical); 
+end entity VCO; 
+
+architecture avco of vco is 
+    constant TwoPi: real := 6.283118530718; -- 2pi 
+
+    quantity Phase : real; 
+
+    -- define a branch for the output voltage source 
+
+    quantity Vout across Iout through OutTerminal to electrical'reference; 
+
+begin 
+   -- use break to set the phase initial condition 
+   break Phase => 0.0; 
+
+   -- another break statement keeps the phase within 0.. 2pi 
+   break Phase => Phase mod TwoPi on Phase'above(TwoPi); 
+
+   -- phase equation 
+   Phase'dot == TwoPi*realmax(0.5E6, fc+(Vin-Vc)*df); 
+
+     -- output voltage source equation 
+     Vout == 2.5*(1.0+sin(Phase)); 
+
+end architecture avco; 
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test180.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test180.ams
new file mode 100644
index 000000000..3e33069e4
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test180.ams
@@ -0,0 +1,74 @@
+
+-- Copyright (C) 2001-2002 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: test180.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test180.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : Sept 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+-- the test is done for checking the correct implementation
+-- of the break statement.it checks simple break and break on
+-- codition.
+
+PACKAGE electricalSystem IS
+    NATURE electrical IS real ACROSS real THROUGH; -- GROUND REFERENCE;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+END PACKAGE electricalSystem;
+
+use work.electricalSystem.all;
+entity VCO is
+  port(terminal InTerminal,OutTerminal: electrical);
+end VCO; 
+ 
+architecture PhaseIntegrator of VCO is
+
+  quantity Vin across Iin through InTerminal to OutTerminal;
+  constant TwoPi: real := 6.283118530718; -- 2pi
+  quantity Phase : real; -- phase is a free quantity:
+  quantity Vout across Iout through OutTerminal;
+
+begin
+
+  break Phase => TwoPi;
+  Vout == 2.5*(sin(Phase)); -- output statement
+
+end PhaseIntegrator; 
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test181.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test181.ams
new file mode 100644
index 000000000..4c7caf467
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/test181.ams
@@ -0,0 +1,73 @@
+
+-- Copyright (C) 2001-2002 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: test181.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+----------------------------------------------------------------------
+-- SIERRA REGRESSION TESTING MODEL
+-- Develooped at:
+-- Distriburted Processing Laboratory
+-- University of Cincinnati
+-- Cincinnati
+----------------------------------------------------------------------
+-- File          : test181.ams
+-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
+-- Created       : Sept 2001
+----------------------------------------------------------------------
+-- Description :
+----------------------------------------------------------------------
+-- the test is done for checking the correct implementation
+-- of the break statement.it checks simple break and break on
+-- codition.
+
+PACKAGE electricalSystem IS
+    NATURE electrical IS real ACROSS real THROUGH; -- GROUND REFERENCE;
+    FUNCTION SIN(X : real) RETURN real;
+    FUNCTION EXP(X : real) RETURN real;
+END PACKAGE electricalSystem;
+use work.electricalSystem.all;
+
+entity VCO is
+  port(terminal InTerminal,OutTerminal: electrical);
+end VCO; 
+ 
+architecture PhaseIntegrator of VCO is
+  quantity Vin across Iin through InTerminal to OutTerminal;
+  constant TwoPi: real := 6.283118530718; -- 2pi
+  quantity Phase : real; -- phase is a free quantity:
+  quantity Vout across Iout through OutTerminal;
+begin
+  break Phase => TwoPi;
+  -- break allows to define the initial conditions
+  break Phase => 0.0 on Phase'above(TwoPi);
+  Vout == 2.5*(sin(Phase)); -- output statement
+end PhaseIntegrator; 
+
diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/torsional_oscillator.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/torsional_oscillator.ams
new file mode 100644
index 000000000..084f90c99
--- /dev/null
+++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/break_stmt/torsional_oscillator.ams
@@ -0,0 +1,52 @@
+
+-- 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: torsional_oscillator.ams,v 1.1 2002-03-27 22:11:17 paw Exp $
+-- $Revision: 1.1 $
+--
+-- ---------------------------------------------------------------------
+
+--Torsional oscillator
+ENTITY bouncer IS
+END ENTITY bouncer;
+
+ARCHITECTURE simple OF bouncer IS
+	CONSTANT m1 : REAL := 0.0;
+	CONSTANT md : REAL := 0.0;
+	CONSTANT mc : REAL := 1.0;
+	QUANTITY om : REAL;
+    QUANTITY ph : REAL;
+	
+BEGIN	 
+	    --Initvalues
+	    BREAK om => 0.0, ph => 0.0;
+	
+        (om'dot) == 10000.0*(1.0 - 1000.0 * ph);
+        (ph'dot) == om;    
+        
+END ARCHITECTURE simple;