Atari Crystal Castles to JAMMA Adapter

Description

Crystal Castles was Atari’s attempt at an isometric adventure and exploration game, unusual for the arcade setting at that time. Crystal Castles is one of the first games with an ending, again something that was pretty unexpected in an arcade game. While it didn’t sell nearly as many units as Centipede or Millipede, it is a great game with excellent reviews, and a true classic. 

As with all Atari games of that period, Crystal Castles has a unique pinout. It uses a trackball, and is not capable of accepting normal joystick inputs. As a result the adapter provides a micro-controller based trackball emulation circuitry which allows for JAMMA joystick controls.

Images

Pinout

This adapter follows the following pinout scheme:

Main Connector (44 pin)

SOLDER SIDEPARTS SIDE
GNDGND
+5V+5V
+12V (10.3V)NC
AUDIO2AUDIO1
HSYNCNC
CSYNCVSYNC
VGREENVGND
VBLUEVRED
NCNC
NCNC
NCNC
NCNC
NCNC
TRBLGTNC
COUNT2COUNT1
NCNC
NCNC
NCNC
NCNC
NC+12V (+10.3V)
+5V+5V
GNDGND

Secondary Connector (24 pin)

SOLDER SIDEPARTS SIDE
GNDGND
+5V+5V
NCP2START/B1
COIN1NC
SVCCOIN2
TESTP1START/B1
VCLKVDIR
HCLKHDIR
NCNC
NCNC
+5V+5V
GNDGND

(PCB edge connector facing away, list is ordered right to left)

Compatible Games

This is the list of compatible games that can be used with this adapter:

The adapter has been tested with a genuine version of Atari Crystal Castles.

Important: This adapter does not work with the two board version of the game. 

Revision History:

Rev 1.0: Initial Design.

Specifications

Board Size: 50mm x 190mm
Current Carrying Capacity: 5V – 12A, 12V-3A, -5V – 3A