Thread:Thunder the Coyote/@comment-26381576-20190630143353/@comment-5688420-20190704064246

PS2 emulation is far from perfect as of now.

https://forums.pcsx2.net/Thread-Namco-System-246-256

This is from a few years ago, but shows you the current progress of Namco System 246 emulation. As mentioned above, ACS NOVA System uses similar hardware, which, in turn, was based off the PlayStation 2.