Arcade

The term **arcade** in video gaming refers to dedicated coin-operated machines installed in public venues such as amusement arcades, bars, and restaurants, rather than a single fixed hardware platform. From the mid‑1970s through the 1990s, arcade boards represented the cutting edge of real‑time graphics and sound, with each manufacturer designing its own proprietary hardware. Classic systems include Atari’s discrete‑logic boards, Namco and Taito’s early sprite‑based platforms, Capcom’s CPS‑1/CPS‑2, Sega’s System 16 and Model series, SNK’s Neo Geo MVS, and many more. Because “arcade” is an umbrella category, there is no single universal technical specification. Instead, most arcade games are built on a *motherboard + game board* or *single‑board* computer design, using off‑the‑shelf CPUs (notably Zilog Z80, Motorola 68000, MIPS, PowerPC and others) combined with custom sprite/tile graphics hardware and dedicated sound chips (FM synthesis via Yamaha YM series, sample playback via OKI or custom ASICs, etc.). Resolutions and refresh rates are broadly similar: standard JAMMA‑era cabinets typically output 15 kHz RGB video to a CRT at ~240p (e.g., 256×224 or 320×240) at 50/60 Hz. The control scheme for arcade games is similarly varied. The most common layout uses an 8‑way digital joystick paired with 1–6 action buttons per player, plus separate Start and Coin inputs. Some machines employ specialized controls such as trackballs, spinners, driving wheels, light guns, flight sticks, or dual‑joystick configurations. In modern web‑based emulation, these physical inputs are mapped to a keyboard or gamepad; the default keyboard mapping here assumes a typical fighting‑game style 6‑button panel plus Start and Coin for up to two players. Historically, arcade hardware drove many of the technological and design innovations later adopted by home consoles: hardware sprite scaling/rotation, parallax scrolling, multichannel FM audio, and 3D polygon rendering all matured first in the arcade space. Today, emulation projects such as MAME aim to preserve this diverse ecosystem by documenting each board’s exact CPU, GPU, audio, and I/O configuration. As a result, “arcade” in an emulator front‑end is best understood as a collection of many distinct platforms, unified by coin‑op cabinet design rather than a single standardized architecture.

audio

Varies by board; typically discrete PSG, FM synthesis (e.g., Yamaha YM series), and/or PCM sample playback via custom or OKI chips. Multichannel audio, often with separate music and effects processors.

cpu

No single standard. Common families include Zilog Z80, MOS 6502 variants, Motorola 68000/68020, custom 16‑bit and 32‑bit RISC, MIPS, PowerPC, and later PC‑compatible architectures.

gpu

Custom sprite/tile engines and later 2D/3D accelerators designed per manufacturer (Atari, Namco, Capcom, Sega, SNK, etc.), often with dedicated scaling/rotation hardware and later texture‑mapped polygon units.

media

Primarily ROM boards or cartridges; some later systems use CD‑ROM, GD‑ROM, hard disks, flash, or network storage depending on platform.

ram

Highly variable; from a few kilobytes on early 1970s boards to many megabytes (and dedicated VRAM) on 1990s–2000s systems.

releaseYear

c. 1972 (first commercially successful video arcade games)

resolution

Typically low‑resolution RGB for 15 kHz CRTs (e.g., ~256×224, 288×224, 320×240 at 50/60 Hz). Some later systems support medium/hi‑res and 3D graphics at higher resolutions.