The board for the Pac-Man Plug-n-Play that's shaped like Pac-Man (and contains Pac-Level 256) has pins on it that look like they'd fit a UART to USB adapter. Has anybody tried this out? I've heard before that this system uses emulation, but I don't know if that's ever been confirmed.
Also: has there been any attempt to extract the games from Namco Museum Remix/Megamix for Wii, or are those games just ports rather than arcade files?
Image credit: https://www.ifixit.com/Teardown/Pac-Man+Connect+and+Play+Teardown/132577