8x1 Multiplexer

multiplexer8x1.cpp

#include<systemc>
#include<cstdlib>
#include<cstring>
#include<string>

using namespace std;
using namespace sc_core;
using namespace sc_dt;

SC_MODULE(mux8x1)
{
	
	/* I/O Ports*/
	sc_in< sc_lv<8> > in;
	sc_in< sc_lv<3> > sel;
	sc_out<sc_lv<1> > out;

	/*Internal variables*/
	sc_lv<8> inbv;
	sc_lv<3> selbv;

	void select()
	{
		while(1)
		{
			wait();
			inbv = in.read();
			selbv = sel.read();
			

			sc_logic temp_out = (inbv[0] & ~selbv[2] & ~selbv[1] & ~selbv[0]) | (inbv[1] & ~selbv[2] & ~selbv[1] & selbv[0]) | (inbv[2] & ~selbv[2] & selbv[1] & ~selbv[0]) | (inbv[3] & ~selbv[2] & selbv[1] & selbv[0]) | (inbv[4] & selbv[2] & ~selbv[1] & ~selbv[0]) | (inbv[5] & selbv[2] & ~selbv[1] & selbv[0]) | (inbv[6] & selbv[2] & selbv[1] & ~selbv[0]) | (inbv[7] & selbv[2] & selbv[1] & selbv[0]);		
			sc_lv<1> lv_temp ;
			lv_temp[0] = temp_out;
			out.write(lv_temp);
		}
	}
	
	SC_CTOR(mux8x1)
	{
		SC_THREAD(select);
		sensitive << sel << in;
	}
	~mux8x1(){}
};

int sc_main(int argc, char ** argv)
{
	sc_signal <sc_lv<8>> data_in;
	sc_signal <sc_lv<3>> select_in;
	sc_signal <sc_lv<1>> output;

	sc_trace_file *fp;
	mux8x1 M("MUX8");
	fp = sc_create_vcd_trace_file("Mux_tracer");
	fp->set_time_unit(1.0, SC_NS);

	M.in(data_in);
	M.sel(select_in);
	M.out(output);
	

	sc_trace(fp, data_in, "Input");
	sc_trace(fp, select_in, "Select");
	sc_trace(fp, output, "Output");
	
	sc_start(1.0, SC_NS);
	
 	// Testbench
	vector<sc_lv<8>> data_set {"11000011", "00100000", "00000111", "01010101", "00000000", "11111111", "10101010"};
	vector<sc_lv<3>> select_set = {"000", "111", "010", "011"};
	

	for(int i = 0; i  <  data_set.size(); ++i)
	{
		for (int j = 0; j < select_set.size(); ++j)
		{
			data_in.write(data_set.at(i));
			select_in.write(select_set.at(j));
			sc_start(1.0, SC_NS);
			cout << sc_time_stamp().to_seconds()<<" Data: "<<data_in.read()<< " Select: "<< select_in.read()<<" Output: "<<output.read()<<endl;
		}
	}
	sc_stop();
	sc_close_vcd_trace_file(fp);
	return 0;


}