ROM Hacking Discussion / Re: Does this site accept hacks that require a niche outdated emulator to run?« on: September 24, 2017, 04:08:14 pm »
Either it was the only ROM they found and they don't know better, or more likely they want to take advantage of unintentional enhancements offered by inaccurate emulation (such as MMC3 with up to 2MB ROM).
(or maybe intentional enhancements? Like N64 texture packs is the best example I can think of, and much less known, an HD SMS emulator)
It's because of the expanded ROM that the DoaE editor uses, which converts the mapper to 245.
From the tiny amount of research I did, it looks like mapper 245 support got bugged in FCEUX at some point, which is why an older version is recommended. But, the hacks should work fine in anything else that supports that mapper (including EverDrive).