This brings up an my arguement about arcade roms. I don't think the machines came with any user agreement like modern software did. You can check the manuals to specific games (if available).
No one was thinking about emulation back then.
I just looked through the Galaxian manual, and nowhere inside was any sort of licensing agreement, and certainly nothing that stated that my right to the game lived on the game circuit board or rom chips.
That lack of statement (in my mind at least), means that my right to play Galaxian lives in any part of the machine that I happen to possess. Since I have a converted Galaxian cabinet, then I have the right to play Galaxian. I also have a Pac-Man marquee bracket, a Galaga coin door, and a converted Ms. Pac panel on that same cabinet (along with a Top Gunner kit), and in those parts lives my rights to play those games. Can they PROVE that the rest of that machine exists somewhere, and that my parts aren't all that is left?
Would Sega's lawyers have a case against me for emulating Carnival (cocktail), when I have the joysticks from the thing? For that matter could they prove that my Namco Reunion joystick isn't all that is left of that rather shoddy product =).
The whole arguement that the game lives on the ROM chips falls flat when it comes to laserdisc games, since those roms are distributed freely, and not even the people who own the rights to the games seem to care (the laserdisc content itself however is something different).
I am sure my car has a couple eprom chips in it, and it wouldn't work without them. But it would be folly to say that my right to the car lives on those chips. Like an arcade game, the eprom is just one tiny part of a larger whole.