Doubt about the Serial port Arduino

Official Hardware Mega Due
4

Graynomad:
You don't need to fool around with interrupts, the Serial library does everything for you.

But you do need to provide TTL->USB hardware for the second serial port or it's just talking to thin air.

That begs the question, why do you need two USB connections to a PC?

Rob

I will work with two serial ports (serial port 1 and serial port 0) in my aplication. For check the program I need see the datas that I will send for two serial ports.

If I define attachInterrupt(0, Serial0Reception, mode) in the setup fuction I can use the Serial0Reception function If Arduino receive datas from serial port 0??

Thanks