#include "systemc.h" 
#include "adder.cpp"


SC_MODULE(_2BIT)
{
	private :
	sc_signal<sc_bit> in1,in11,in2 ,in22;
	sc_signal<sc_bit> carry_in,sum0,sum1,tmp,cin,carry_out;
	sc_bit i1,i2;
	sc_bv<2> sum,ina,inb;


	public :
	sc_signal<sc_bv <2> > A;
	sc_signal<sc_bv <2> > B;
    //sc_signal<sc_bit> CIN;
    sc_signal<sc_bv <2> > SUM;
	sc_signal<sc_bit> CARRY_OUT;

	ADDER *fa0;
	ADDER *fa1;

	SC_CTOR(_2BIT)
	{
		fa0=new ADDER("fa0");
        fa1=new ADDER("fa1");
        
		fa0->a(in1);
		fa0->b(in2);
		fa0->cin(cin);
		fa0->sum(sum0);
		fa0->carry(tmp);


		fa1->a(in11);
		fa1->b(in22);
		fa1->cin(tmp);
		fa1->sum(sum1);
		fa1->carry(carry_out);

		SC_METHOD(main_action);
		sensitive<<A<<B<<SUM<<CARRY_OUT;
	}


	void main_action()
	{
		cin=sc_bit('0');
		ina=A;
		inb=B;
		in1=sc_bit(ina[0]);
		in11=sc_bit(ina[1]);
		in2=sc_bit(inb[0]);
		in22=sc_bit(inb[1]);


		i1=sum0;
		i2=sum1;
		
		sum.range(0,0)=i1;
		sum.range(1,1)=i2;
		SUM=sum;
		CARRY_OUT=carry_out;
	}
};