RS232/Joyport Adapter
By VM Labs.
Prototype Hardware

This device adapts a standard RS232 serial cable into a NUON controller port cable, allowing anything with a serial interface to connect to NUON. A device like this would allow much faster debugging for homebrew development, but a few things would need to happen before that was possible, like the adapter would need to be reverse engineered, polyface chips are needed and a shell application would need to be written, assuming that at least one available NUON player with joystick ports has support for the adapter build into the BIOS.