HeaderLess (Unheadered) ROMs not working

[ghost]

Hi Fabio No matter if the file extension is nes or not, none of the HeaderLess (Unheadered) ROMs will function.

In log:

On Mesen, it functions and makes use of the game database data;

however, it is not functional on FCEUX.

[negativeExponent]

its a massive pain to fully support headerless roms in emulation, since there are countless homebrews which can change at any point in time which in turn will need update to the database, for e.g., also various rom hacks, translations etc. even Sour once admitted it was a mistake to add headerless support in Mesen before.

dunno if Fabio will ever add support for it.

[ghost]

@negativeExponent Yes, it's a difficult task to do, but at least the NES 2.0 database can handle it; it's okay if ROMs or homebrews outside NES 2.0 don't function. Especially that Fabio added nes20db.xml

[ghost]

After giving it some thought, it seems reasonable. @negativeExponent 👍