Supernova

Range of port mapping from outer to inner module input port

3 posts in this topic

Hi,

I was trying to map port from a outer module to an input port of inner module. The ports to be mapped in a certain way that a range of input port of outer module is to be mapped with the input port of the inner module. Example is given below.

inner module : 

 

SC_MODULE(alu)
{
  sc_in<sc_uint<8> >  a_in;
  sc_in<sc_uint<8> >  b_in;
  sc_in<sc_bv<2> >     op;
  sc_in<bool> en;
  sc_out<sc_uint<8> > out_sig;
  
 
  void calc_out();
 
  SC_CTOR(alu){
    cout<<"alu constructor"<<endl;
    SC_METHOD( calc_out );
    sensitive<<op<<a_in<<b_in<<en;
  }
 
};
 
Outer module:
 

sc_in <sc_uint<24> > ins;
sc_in <bool> coack;
sc_in <bool> memack;
sc_out <sc_uint<8> > out;
sc_out <sc_uint<8> > memout;
sc_out <sc_uint<23> > coprout;
sc_out <bool>corqst;
sc_out <bool> memrqst;
 
sc_signal <bool> aluen ;
//sc_signal <sc_bv<24> > ins_sig;
 
sc_signal <sc_int<8> > result_sig;
 
alu* alup;
 
SC_CTOR(processor)
{
alup = new alu("alup");
alup->a_in(ins.range(15,8));   // HERE THE ERROR IS COMMING. I want to map a range of port bit of processor (outer 
// int i;                                      // module) to the whole one port of alu (inner module)
// alup->a_in[7](ins[15]);
// for(i=15;i>=8;i--)
// alup->a_in[i-8](ins);
 
        alup->b_in(ins_sig.range(7,0));  // SAME HERE
// for(i=7;i>=0;i--)
// alup->b_in(ins);
 
alup->op(ins_sig.range(17,16));         //SAME HERE
 
for(i=17;i>=16;i--)
alup->op[i-16](ins);
 
alup->en(aluen);
alup->out_sig(result_sig);
 
SC_THREAD(request_copr);
sensitive << ins << coack.pos();
SC_THREAD(request_mem);
sensitive << ins << memack.pos();
SC_METHOD(show_out);
sensitive<<out_sig;
 
}
// functions....
}
 
I will be highly thankful if anyone ca help me with this.

 

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A well known SystemC problem.  Unfortunately you will have to create SC_METHOD that will divide your ins port into multiple signals on range basis.

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