/*****************************************************************************

  The following code is derived, directly or indirectly, from the SystemC
  source code Copyright (c) 1996-2004 by all Contributors.
  All Rights reserved.

  The contents of this file are subject to the restrictions and limitations
  set forth in the SystemC Open Source License Version 2.4 (the "License");
  You may not use this file except in compliance with such restrictions and
  limitations. You may obtain instructions on how to receive a copy of the
  License at http://www.systemc.org/. Software distributed by Contributors
  under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
  ANY KIND, either express or implied. See the License for the specific
  language governing rights and limitations under the License.

 *****************************************************************************/

/*****************************************************************************
 
  main.cpp -- This is the top level file instantiating the modules and
              binding ports to signals.
 
  Original Author: Amit Rao, Synopsys, Inc.
 
 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

#include "systemc.h"
#include "stage1.h"
#include "stage2.h"
#include "stage3.h"
#include "display.h"
#include "numgen.h"

#define NS * 1e-9

int sc_main(int ac, char *av[])
{
  //Signals
  sc_signal<double> in1;
  sc_signal<double> in2;
  sc_signal<double> sum;
  sc_signal<double> diff;
  sc_signal<double> prod;
  sc_signal<double> quot;
  sc_signal<double> powr;  
  //Clock
  sc_signal<bool>   clk;
  
  numgen N("numgen");               //instance of `numgen' module
  N(in1, in2, clk );                //Positional port binding
  
  stage1 S1("stage1");              //instance of `stage1' module
  //Named port binding
  S1.in1(in1);
  S1.in2(in2);
  S1.sum(sum);
  S1.diff(diff);
  S1.clk(clk);
  
  stage2 S2("stage2");              //instance of `stage2' module
  S2(sum, diff, prod, quot, clk );  //Positional port binding

  stage3 S3("stage3");              //instance of `stage3' module
  S3( prod, quot, powr, clk);       //Positional port binding
  
  display D("display");             //instance of `display' module
  D(powr, clk);                     //Positional port binding 

  sc_start(0);                  //Initialize simulation
  for(int i = 0; i < 50; i++){
      clk.write(1);
      sc_start( 10 NS );
      clk.write(0);
      sc_start( 10 NS );
  }

  return 0;
}

