[moved] VHDL AMS Simulation: hamster

[Arushi Jain]

The following code results in the error under determined model and the simulation breaks off.
How should I remove the error. I have coded in Hamster Vhdl

library IEEE;        
use IEEE.MATH_REAL.ALL;                                                                                                          
LIBRARY DISCIPLINES;
USE DISCIPLINES.ELECTROMAGNETIC_SYSTEM.ALL;  
                           
entity equation is      
port( quantity x1,x2,x3,x4,x5 : in real; 
		quantity fx1,fx2,fx3,fx4,fx5 : out real);
end equation;        

architecture behav of equation is                                                                             
begin   
fx1 == x1**2.0 + 1.0; 
break;   
fx2 == x2**2.0 + 1.0; 
break;
fx3 == x3**2.0 + 1.0;
break;              
fx4 == x4**2.0 + 1.0;
break;                                                                              
fx5 == x5**2.0 + 1.0;
end behav;                               

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library IEEE;        
use IEEE.MATH_REAL.ALL;                                                                                                          
LIBRARY DISCIPLINES;
USE DISCIPLINES.ELECTROMAGNETIC_SYSTEM.ALL;      
                                                                                                                                                           
entity TrapiRule is 
--generic (n:real);              -- number of intervals in which the function is to be divided.
port( 
quantity a: inout real;
quantity b :in real;
quantity w2,w3,w4,w5: out real);
end TrapiRule;                                                                                                                                                                                      

architecture behav of TrapiRule is
quantity h : real;   
--TYPE base IS ARRAY(0 to 5) of real;  
--quantity x: base;                                       
begin
h == (b-a)/5.0;                            
--procedural is
--begin
--for i in 1 to 5 loop 
--x(i) :=  a + (i-1)*h;  
--end loop;
                    
w2 == a + h;
break;
w3 == a + 2.0*h; 
break;
w4 == a + 3.0*h; 
break;
w5 == a + 4.0*h;
end architecture behav;

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library IEEE;        
use IEEE.MATH_REAL.ALL;                                                                                                          
LIBRARY DISCIPLINES;
USE DISCIPLINES.ELECTROMAGNETIC_SYSTEM.ALL;  

entity DefTra is
port(quantity y1,y2,y3,y4,y5: in real;
	 quantity result : out real);
end DefTra;

architecture behav of DefTra is   
quantity res: real :=0.0;             
quantity h : real;
begin

res ==  y1/2.0 + y2 +y3 + y4 + y5/2.0 ;                     
end architecture behav;   

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------

library IEEE;        
use IEEE.MATH_REAL.ALL;                                                                                                          
LIBRARY DISCIPLINES;
USE DISCIPLINES.ELECTROMAGNETIC_SYSTEM.ALL;  
                                                    
entity testbench is 
port(
quantity final:out real);                            
end testbench;
                                                                                                                                                                                         
architecture behav of testbench is 
quantity a,b,result: real;
quantity f2,f3,f4,f5:real; 
quantity d1,d2,d3,d4,d5:real;    
quantity m: real; 
begin                                                                   
BREAK
a=>1.0, b=>6.0;
tr1: ENTITY trapiRule     (behav)             PORT MAP (a=>a, b=>b, w2=>f2, w3=>f3, w4=>f4 , w5=>f5 );   
eq1: ENTITY equation     (behav)              PORT MAP (x1=>a, x2=>f2 ,x3=>f3,x4=>f4, x5=>f5,fx1=> d1, fx2=>d2,fx3=>d3,fx4=>d4,fx5=>d5);
def1: ENTITY DefTra      (behav) 		      PORT MAP(y1=>d1,y2=>d2,y3=>d3,y4=>d4,y5=>d5, result=>result);
m== (b-a)/5.0;                            
final == result* m;
 end architecture behav;