hi everyone,
im undergraduate student and hving some questions related sigma delta modulator in dolphin SMASH. The coding shown below was having some errors which im not able to solve:

>>> VHDL
----------------------------------------------------------------
/* combine */
----------------------------------------------------------------
LIBRARY IEEE;
use IEEE.MATH_REAL.all;
use IEEE.STD_LOGIC_1164.all;
use IEEE.ELECTRICAL_SYSTEMS.all;
USE work.all;

entity sdm_1 is
PORT(
       TERMINAL vin : ELECTRICAL;
       SIGNAL clk : IN STD_LOGIC;
       SIGNAL op : OUT STD_LOGIC);
END sdm_1;

ARCHITECTURE simple OF sdm_1 IS
     TERMINAL adder2o : ELECTRICAL;
     TERMINAL intero : ELECTRICAL;
     SIGNAL Qo : STD_LOGIC;
     TERMINAL DACo : ELECTRICAL;
BEGIN

   adder_1 : entity ADDER(simple)
           GENERIC MAP(A => 1.0,B => -1.0)
           PORT MAP(ip1 => vin,ip2 => DACo,op =>adder2o);
   
   inter_1 : entity inter(simple)
           PORT MAP(ip => adder2o,op =>intero);

   Q :       entity quantizer(simple)
             GENERIC MAP(threshod => 0.0)
             PORT MAP(clk => clk,ip => intero,op => Qo);
   
   DAC_1 :   entity DAC(simple)
             GENERIC MAP(mx => 5.0,mn => -5.0)
             PORT MAP(ip => Qo,op => DACo);
   op <= Qo;

END simple;
------------------------------------------------------------
library IEEE;
use ieee.math_real.all;
use ieee.std_logic_1164.all;
use IEEE.ELECTRICAL_SYSTEMS.all;
USE work.all;

entity top_circuit is
end top_circuit;

architecture test of top_circuit is
   terminal A : electrical;
   quantity xin across iin through A to electrical_ref;
   signal op : std_logic;
   signal clk : std_logic;

begin
   m_sdm3 : entity sdm_1(simple)
            port map(vin => A,clk =>clk,op => op);
   xin == 5.0*sin(math_2_pi*1.0e6*NOW);
   process
   begin
       clk <= '1';
       wait for 500 ps;
       clk <= '0';
       wait for 500 ps;
   end process;

end test;

--------------------------------------------------------------------------------
------------------------
integrator sub-block
--7. Integrator --
--Used as an integrator for Sigma-Delta Converters --
----------------------------------------------------------------

LIBRARY IEEE;
USE IEEE.MATH_REAL.ALL;
use ieee.math_complex.all;
USE IEEE.ELECTRICAL_SYSTEMS.ALL;
use IEEE.STD_LOGIC_signed.all;
use IEEE.STD_LOGIC_arith.all;
ENTITY inter is
   PORT(TERMINAL ip : ELECTRICAL;
        TERMINAL op : ELECTRICAL);
END inter;

ARCHITECTURE simple OF inter IS
   
   QUANTITY vop ACROSS iop THROUGH op TO ELECTRICAL_REF;
   QUANTITY vip ACROSS ip TO ELECTRICAL_REF;

BEGIN

   vop == vip'integ;
END simple;
--------------------------------------------------------------------------------
--------------

--PAT file--

.VHDL SET KIND=AMS
.VHDL elaborate entity=top_circuit unit=test

.VHDL compile library=work source=adder.vhd
.VHDL compile library=work source=dac.vhd
.VHDL compile library=work source=inter.vhd
.VHDL compile library=work source=quantizer.vhd

--error found--
Compiling Entity Declaration INTER
Compiling Architecture SIMPLE of INTER
Compiling Entity Declaration SDM_1
Compiling Architecture SIMPLE of SDM_1
Compiling Entity Declaration TOP_CIRCUIT
Compiling Architecture TEST of TOP_CIRCUIT
Creating library file: libwork_inter.a

Creating library file: libwork_sdm_1.a

Creating library file: libwork_top_circuit.a

work_inter_simple.cpp: In member function `short int WORK::INTER_SIMPLE::AmsBim(long int, TRANS_PARAM_BIM*)':

work_inter_simple.cpp:390: error: `VIP_INTEG_INTEG_q6_row' was not declared in this scope

ERROR: unable to compile work_inter_simple.cpp
Creating library file: libwork_sdm_1_simple.a

Creating library file: libwork_top_circuit_test.a


im so frustrated and cant solve the problem, can anyone help me? thx a million...


regards, seamus