Changes

Machines often varied by their design and, unlike consoles, were often tailored to just one game. Games were designed to eat as much many quarters as possible, which is emulated with he the "Coin" key. Some games have a service mode (mapped to F2 in MAME) with menus meant for the arcade owner to set dipswitches for difficulty, censorship, language, and most importantly a "Free Play" mode that allows players to continue as many as they want without requesting more coins. Sometimes, similar menus meant for developers (labeled debug or test usually, sometimes requiring a developer BIOS like with some Neo Geo games) are left in the game too.

Hardware made specifically for the arcade to provide for graphics and performance unseen on home consoles. Extremely common in the golden age of arcades but became much less frequent as companies used modified existing hardware instead to save on R&D costs and easier cross-platform development, or tried to differentiate between the home and arcade experience with control scheme gimmicks instead.

MAME's purpose is to cover most of these. Older arcades as well as select popular arcade machines, the Neo Geo and Capcom's CPS series , in particular, received their own standalone emulators. Sometimes, they received their own console versions but those are mostly ports, not emulation, with very few exceptions.

Remember to back-up backup data from the downloaded scene release before trying to fix it to run.

* '''Launcher:''' The game needs this to work at all. There are many: Jconfig, Teknoparrot... and each game requires a specific launcher. If you got the dump from elsewhere , not in a clean state that doesn't work, it may be because of conflicting launchers and you will have to delete all of them (typically <code>Detoured.dll, Game loader Rh.exe, Typex_config.exe, Typex_loader.exe, TTXconfig 2.0, TTX-moniter.dll</code>...)* '''iDmacDrv32.dll:''' Needed in Nesica games. If present, do not delete it, copy Jconfig.exe and the replacement iDmacDrv32.dll from the Jconfig package, then double-click NesicaXlive.reg to import keys to your registry, and use the game executable to run the game. If not present, copy Jconfig.exe, JVSemu.dll , and jvs_loader.exe from the Jconfig package, and use jvs_loader.exe to run the game.