Plug roadmap:

Status	Type	Device 1	Device 2
In-process	C64 Control Port	C64 1351 Mouse / Paddles / Joysticks
Planning	PC Gameport	Analog Joystick(s)
Planning	Apple II Era	DIP Style Joystick	DB9 Style Mouse or Joystick
Planning	DEC LK201	LK201 Keyboard
Planning	PC Bus Mouse	Inport / Logitech Bus Mouse
Planning	Sun	Keyboard	Mouse