This adapter was named after The 8 Bit Guy that came with a SNES layout for a game that he is developing (for Commodore PET/64) that have controls very similar to Robotron, where the directional Pad controls the movement while the X Y A B buttons control the shooting direction.
Full keyboard control is provided using the SELECT and START buttons as Alt/Modifiers keys
The connections to the Atari 5200 should be done by use of two cable extensions. If cable on Port 2 is not connected the X Y A B buttons behave like TOP/BOTTOM buttons.
The adapter should also support the NTT data controller. Like the regular SNES controller the X Y A B buttons revert to TOP/BOTTOM when the cable on port 2 is not connected.
The circuit shall also provide support for NES controllers, though with limited keypad support.
The connection to the SNES controller should be done by cutting an extension cable and soldering the wires to the PCB.
The PCB is designed to fit within a Hammond 1593J case.
Base code is ready. Next step is prototyping.