Japan Amusement Machinery Manufacturers Association

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Connector standards

The JAMMA wiring standard was introduced in 1985. Arcade cabinets wired to the JAMMA standard can be made to play all games built to this standard, simply by installing the circuit boards for the new game. By the 1990s, most new arcade games were JAMMA standard. As the majority of arcade games were designed in Japan at this time, JAMMA became the de facto world standard.

Before the JAMMA standard, most arcade PCBs, wiring harnesses, and power supplies were custom-built. When an old game became unprofitable, many arcade operators would rewire the cabinet and update the artwork in order to put different games in the cabinets. Reusing old cabinets made a lot of sense, and it was realized that the cabinets were a different market from the games themselves. The JAMMA standard allowed plug-and-play cabinets to be created (reducing the cost to arcade operators) where an unprofitable game could be replaced with another game by a simple swap of the game PCB, and an update of the artwork. flow paddle switch

The JAMMA standard uses a 56-pin edge connector on the board with inputs and outputs common to most video games. These include power inputs (5 volts for the game and 12 volts for sound); inputs for two joysticks, each with three action buttons and one start button; analog RBG video output with negative composite sync; single-speaker sound output; and inputs for coin, service, test, and tilt (the former to accept game credits and the latter to maintain the board). 12v solenoid valve

Later games (eg: Street Fighter II, X-Men) use arcade boards that incorporate extra connectors or utilize unused JAMMA pins to implement extra buttons, different controller types, or support more players. These games are sometimes referred to as JAMMA+. sump pump alarms

JAMMA Video Standard

JAMMA Video Standard (JAMMA VIDEO, JVS) is a newer JAMMA connector standard designed to use modern peripherals.

The standard consists of peripheral device connections and communication protocol sections.

In the peripheral device connections, it specifies the use of separate I/O board for peripheral devices.

1st edition

It was released in 1996-11-15.

Peripheral devices are connected to USB-A port on the I/O board, while the USB-B on the I/O board is used to connect it to the USB-A port on the main board.

2nd edition

It was released in 1997-07-17.

3rd edition

It was released in 2000-05-31.

Video signal standard was defined in 2 steps, with step 1 enacted before year 2000, and step 2 beginning from 2000. Step 2 has different timing parameters.

Recommended timing values for SYNC code were added.

At protocol section, general software entry action code type is added. Character output code now supports ASCII, Shift-JIS. Mahjong controller software entry code, general driver outputs 2-3 are added.

Amusement Machine Prize guideline

The Amusement Machine prize guideline () is a guide for the type of prize that should be provided by arcade operator. The standard was enacted in 2004-11-01. The standard was released on 2004-10-21.

It specifies the retail value of a prize item cannot exceed 800 yen. In addition, following items cannot be manufactured, sold, or transferred to arcades as prizes:

Tobacco and tobacco-themed items

Alcohol and alcohol-themed items

Drugs, or items containing material that causes high, dizziness, hallucination

Medium containing contents that interferes with proper youth growth or good social order

Items for sex, and items resembling sexual organs

Underwear

Coupon or similar items

Item violating food safety laws

Counterfeit brand or counterfeit character items, or items violating intellectual property

Item causing physical or mental harm (e.g., weapons)

Life forms violating the spirit of animal protection

References

^ JAMMA/AAMA Standard Connector Pinouts

^ JVS-PAC Introduction

^ a b Video output connector uses DB-15 used by analog VGA monitors, output connector uses RCA stereo connectors.

External links

Japanese Official Site

Amusement Machine Show page

JAMMA information for beginners

A listing of Arcade Game PCBs that are JAMMA pinout ready

Connector standards

Standard JAMMA Pinout with detailed information

JAMMA Standard Pinout

USB+VGA (PC/Mac) -> JAMMA interface

AMIGA -> JAMMA interface

Arcade board connector pin layout

Categories: Video game organizations | Arcade system boards