Banner
HomeDIYProjects
About
Contact
diypage1
diypage2
diypage3
diypage4
 
This section covers what cab shapes there are,  what  JAMMA is and how to use / configure etc



What Arcade Cabinet Styles Are There?

  1. UPRIGHT / STANDARD - This refers to any standard coin-operated machine that sits directly onto the floor. This includes most videgames, nearly all pinball machines, and nearly all other machines that do not sit on a table-top or otherwise fits into one of the other categories below. In the case of videogame cabinets, uprights, standing at 5 or 6 feet tall (1.6 to 1.8 metres), are the norm. Controls are are usually set perpendicular to the monitor at around waist level (90cm). A monitor is housed inside the cabinet at approximately eye level. A marquee, often lighted, postioned at the top of the cabinet. Below the control panel a coin-door is usually found, and the sides of the cabinet often displays interesting themed art (called side-art).  
  1. CABARET / MINI - Cabaret or mini cabinets are shorter versions of upright cabinets. They are often smaller in each dimension (height/width/depth), and can have a smaller monitor. Space saving and relatively child friendly, they are much less common than full upright cabinets.

  2. COCKTAIL - Cocktail cabinets are called such as they look like small tables (or high coffee tables) and thus a player can set a drink or food (burger & Chips) down on top of the glass. They achieved a lot of popularity in bars and restaurants during the early 80's. In these cabinets, the monitors typically face straight up. Controls are typically found at alternate sides of the cabinet for games with alternating play (ie: Pac-Man, Galaga, Space Invaders), and side by side for games with simulatenous play (ie: many fighting games). While a few of the cocktails (ie: Asteroids Deluxe, Centipede, Crystal Castles, Dig Dug, Missle Command, & Warlords) are actually configurable to be standing table games due to leg extensions, their common configuration was in cocktail mode, and thus appear in this category.

  3. CANDY / JAPANESE - These (often white) plastic cabinets are common in Japan and China. A player often sits on a chair to play them and thus these machines often have their monitors pointed slightly upwards (ie: a 30 degree angle). A nice list of Candy Cabinet Designs can be found on Wikipedia.

  4. COCKPIT / ENVIRONMENTAL - These cabinets typically go up and over the player who sits or stands inside. Examples would include the larger cabinets for Discs of Tron and Sinistar. This was the hardest category to decribe on this page as many collectors themselves may refer to themed machines (w/ or w/o motion) as 'Environmental' units. 

  5. COUNTER-TOP / TABLE-TOP / BAR-TOP - These small cabinets fit directly on top of a table or counter. Many vending machines, trade stimulators, and arcade games from the mid 1990s fall in this category. Very few pinball machines were made this way. Videogames made in these cabinets are often gambling, trivia, single game screens, later models can have touch screens, and are usually found in pubs and bars, there is also an increasing trend for home use.

  6. DELUXE / THEMED - These cabinets often have the player sit (or stand) in the shape of an item a game is themed in. That is, in a driving game, a player sits down in a car or boat (which may or may not move during play). In other games, a player may stand on a surfboard, skateboard, or skis. Many of these cabinets move via hydraulics, and some even spin the player around 360 degrees (ie: Sega's R-360 or the more recently release Storm-G).


What is JAMMA?
First, here is a little history behind the meaning of the acronym, JAMMA.

Back in the dark ages of arcade video games (pre 1984), game manufacturers operated in exclusive little domains where they designed game components in a way that best served their own interests.
Consequently, they each had their own proprietary circuit boards, power supplies, and wiring harnesses.  There was essentially no interchangeability of components between one manufacturer's game cabinet and a game cabinet made by someone else.

While this worked well for the manufactures, it created massive startup and support costs for the Arcade operators.
 Around 1985, the Japan Amusement Machinery Manufacturers Association (JAMMA) created some industry standards, particularly for the design of game printed circuit boards (pcbs) and wiring harnesses, the industry changed significantly.

The most important and influential of these new standards was the pcb standard pinout.  Any game pcb complying with that pinout standard is what we now call a JAMMA board. 

jamma1  The image to the left is of the parts side of a JAMMA game board. 

jamma2  The wiring that connects the game's components - monitor, power supply, control panel, speaker, etc. - to the pcb is called a JAMMA wiring harness. 

There are many JAMMA terms that you will come to hear and use frequently - JAMMA board, JAMMA harness, JAMMA edge connector, JAMMA cabinet, and so on.

At the root of their meaning is nothing more than the concept of pcb interchangeability between cabinets of different manufacturers. 

When you tire of a game, you can plug-and-play the JAMMA pcb for your next favourite game.  Plug-and-play simply means to unplug the edge connector from one pcb, and plug it onto another pcb.

Of course you need to be absolutely sure you have the plug orientation correct, or you can blow the PCB by putting power on to connections that weren’t meant to receive power.

And, it is the JAMMA standard pcb pinout (charted below) that has made it all possible.

The following JAMMA pinout chart is basically a map of the JAMMA wiring harness 56-pin edge connector.  When properly seated to the pcb, the connectors of the edge connector will align with the pinout fingers of the pcb, and your game will play.

jammapinout

Understanding the JAMMA Pinout Chart:

Solder Side - The bottom side of the pcb.  The side where the soldered connection parts are exposed to view.  Few, if any, parts are located on the solder side.

Parts (Component) Side -  The top side of the pcb.  The side where the electronic component parts are located.  The parts side can be viewed in the pcb photo above.

N/C - No connection.

Key Slot - A keyed slot which aligns with a leave-out in the pinout section of the pcb. 

This safety feature is provided to assure that the Power Section seats at the correct end of the pinout section.  If the edge connector is reversed, and the Power Section is seated at the opposite or incorrect end, irreparable damaged can occur to the pcb.

If the key has been removed from the edge connector, then mark the connector as to the "Parts Side" to help assure correct seating.

Power Section - Pins A-F, 1-6

Video Section - Pins N, P, 13-15

Coin Section - Pins J, K, T, 8, 9, 16

Controller (Joystick) Section - Pins V-Y, 18-21

Pushbutton Switch Section - Pins Z-b, 22-24 (for standard) and includes pins  c, d , 25, and 26 for Jamma+ (buttons 4 and 5) - many of the chinese made multigame boards  allow you to modify the harness to use 27 and e for button 6

Ground (Common) Section - Pins f, 28 (incorrectly often called Ground, correct term is Common)

A more detailed harness breakdown is available here



<<< Previous Page  |  Next Page >>>