Man that thing is awful, I ended up returning 2 of them that refused to work right with any of my SNES's (I have like 4 different models.)

Game plays perfectly fine in the system, won't identify in the copier.  Protos don't play by the rules all the time.

I have no idea whether those C64 ROMs will work on a Super UFO. I tried some NES conversions and they didn't work. Anything that's not an official title is difficult to say for sure.

Yeah some prototype cartridges act funny. The header function is still very useful in the Super UFO though.

Nothing too much to add other than I've had no problems with my Super UFO, it's worked out as a cheap flashcart, and the dumping facility works a lot better than I thought it would. I even managed to dump some random pirate carts I have.

I have a white Super UFO Pro 8 now and tried out that C64 collection ROM. Yes it works fine, the games kinda suck though. No Castle Wolfenstein either. The ROM has a screen saying the hackers who made the emulator were going to release another collection later on with new games. It was apparently made in 1995.

If I put a Super Mario World 2 cartridge on top of my white Superufo pro 8 then I will can run DOOM from my SD card? Wikipedia says that both games have got a Super-FX2 chip: http://en.wikipedia.org/wiki/List...
Is it true?

Nope, not possible. I have tried lots and lots of co-processor games and ROMs, it's not a real function of the Super UFO Pro 8. There isn't even an option in the menu for such a thing. The cartridge slot is only for dumping games and save files.

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So there's still I anticipate a lot to do. Anytime we abode a bold – and this is a non-Call of Duty statement, this is [applicable to] any dev you've anytime talked to – is there's consistently a ton of actualization they ambition they could accept gotten to, afore they shipped. So I anticipate we'll consistently be able to accompany new and absorbing stuff. It's in actuality that we're just aggravating to accomplish a bigger bold than we fabricated endure time.