Changes

[[File:1676971-ms_pac_man_arcade_machine.jpg|thumb|156px|Example of a Ms. Pac-Man arcade cabinet.]]Arcades were venues in which many games were played at, often containing thousands of games. Arcades often got their revenue from players who paid to play games. Most arcade emulators focus on emulating many systems in one program, the scope of which varies between projects. == Machines ==Machines often varied by their design and, unlike consoles, were often tailored to just one game. Most Games were designed to eat as much quarters as possible, which is emulated with he "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. Three main types of arcade machines can be distinguished: ===Arcade Original Hardware===Hardware made specifically for arcade emulators focus 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 emulating many systems 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 one programparticular, received their own standalone emulators. Sometimes, they received their own console versions but those are mostly ports, not emulation, with very few exceptions. ===Converted Home Console Hardware===Those arcade boards share most of the hardware specifications with existing home consoles, with the addition of a coin slot and occasionally DRM and some changes. While MAME supports most of those, standalone emulators for the base home console are more mature and often (but not always) support the arcade variants. * '''NES:''' Nintendo PlayChoice-10, Nintendo VS System* '''SNES:''' Nintendo Super System* '''N64:''' Aleck-64* '''GameCube:''' Triforce* '''Saturn:''' STV* '''DreamCast:''' Atomiswave* '''Xbox:''' Chihiro* '''PlayStation:''' Konami System 573, Namco System 10/11/12* '''PlayStation 2:''' Namco System 246/256/Super System 256* '''PlayStation 3:''' Namco System 357/369 ===Converted PC Hardware===Based on normal PC architecture with a variation of Windows 7 Embedded or Linux installed and tons of DRM and custom drivers. These can still be run on computers using the scope right launchers (Game loader All RH, SpiceTools, idmacx tools, TekParrot..) but most likely won't be emulated by MAME anytime soon, and not just because of which varies between projectstheir policies on what hardware is too recently commercialized to cover.