> there's a default nvram file in the romset with the magic byte set, although you
> MIGHT have to byteswap that file to program it into hardware, MAME output byteswapped
> files for many years so a lot of the default nv files in the romsets are byteswapped.
> but yes, for this game you need that magic byte in eeprom, it's security, the code
> clearly wants it there.
This is present in scfinalso, which according to the comment is a cartridge dump on 27C020 program roms. However, if there was ever another cartridge inserted on that mobo/cart combo, the game would cease to work, just like my pcb did. The new game would demand the user to init NVRAM, overwriting the magic byte.
Are we sure this is a dump from a cart/mobo combo?
As it appears overdumped, and for the above reasons.
Perhaps there is a code/button trick to init that byte?
I've seen a lot of F3 carts/mobo's during my time, but never a Super Cup Finals cartridge. This makes me wonder.