you’d have found when you bought a mouse with a PS/2 connector fitted, it may well have come with an adapter for a 9-pin RS232 serial port. Those mice from a decade or more ago would have ...
A simple pigtail adapter is used to physically interface with a PS/2 port. The source is available if you need to pull off a similar hack.
Grand Theft Auto: Vice City is receiving an unofficial port to the Sega Dreamcast by a group of fan developers. The team, led by head developer SKMP, previously released an unofficial port of Grand ...