/************************************************************************
 * file name:		main.cpp 
 * description:		  
 *
 * modification history
 * --------------------
 * 2003-8-6, created by zhuwei
 */

/* includes----------------------------------------------------------- */
#include "systemc.h"

/* defines------------------------------------------------------------ */
/* typedefs----------------------------------------------------------- */
SC_MODULE(DFF)
{
	sc_in<bool>			clk;
	sc_in<int>	din; 
	sc_out<int>	dout; 
	
	void run()
	{
		dout = din;
		cout << dout << endl;
	}

	// Constructor
	SC_CTOR(DFF) 
	{
		SC_METHOD(run);
		sensitive_pos << clk;
	}
};

struct output: sc_module
{
	sc_in<bool>			clk;
	sc_out<int>	dout; 

	void run()
	{
		dout = 7;
	}

	// Constructor
	SC_CTOR(output)
	{
		SC_METHOD(run);
		sensitive_pos << clk;
	}
};

/* externs------------------------------------------------------------ */
/* globals------------------------------------------------------------ */
/* forward declarations----------------------------------------------- */

int sc_main(int argc, char *argv[])
{
	sc_clock	clk("clk", 10, SC_NS);
	sc_signal<int>	din;
	sc_signal<int>	dout;

	output op1("op1");
	op1(clk, din);

	DFF dff1("dff1");
	dff1(clk, din, dout);

	sc_trace_file *tf = sc_create_vcd_trace_file("dff");
	sc_trace(tf, clk, "clk");
	sc_trace(tf, din, "din");
	sc_trace(tf, dout, "dout");

	sc_start(100, SC_NS);

	sc_close_vcd_trace_file(tf);
	
	return 0;
}