I don't have a PC engine, but it's not beyond the realms that I'll get one one day. Does that controller use a logic chip like the Megadrive controller? Like a 74H type of chip?
Oh, and you might think this is cool, but in Reddit this is being outvoted 3 to 1 by a guy who posted a picture of the Genesis he just bought.
I guess I should have just said I bought this controller 🙄