but I still need to find out how to make the ROM from the actual cartridge. Unedited.
I looked for these games but couldn't find one.Ah, you need a NES dumping device. They are not cheap, like SNES dumpers.
This is because they are all built by amateurs. Do a Google search on CopyNes and you will find what you need.
But why don't you just download the ROM from the Internet (do not ask for links here)? Most NES games are already dumped.