Look in the back of the Saturn... the port is called Communications Connector, it's where the Saturn link cable goes.
About the serial interface, that's _very_ interesting. Maybe it was used for the Floppy drive that connected in this port. After I get this working, I can check if it's compatible or not.
About the serial interface, that's _very_ interesting. Maybe it was used for the Floppy drive that connected in this port. After I get this working, I can check if it's compatible or not.