SNK Marvin’s Maze to JAMMA Adapter

Description

Allows you to use your SNK Marvin’s Maze pre-JAMMA game, in a JAMMA cabinet or a super gun device.

SNK (Shin Nihon Kikaku) is a Japanese video game manufacturer best known for its Neo Geo platform and games. During the pre-JAMMA period, SNK developed a number of games with unique pinouts, and three pinout standards that were used on more than one game.

The pinout was initially created for Marvin’s Maze but later reused for other games that ran on similar hardware. These games are unique in the sense that they used two power plugs and an IDC header for connectivity instead of the typical edge connector.

Images

Pinout

This adapter follows the following pinout scheme:

Main Connector

BOTTOM ROWTOP ROW
NCNC
SPK+SPK-
GNDNC
VREDVGREEN
VBLUEVSYNC
NCNC
P2B2P2B1
P2RIGHTP2LEFT
P2DOWNP2UP
NCNC
NCNC
P1B2P1B1
P1RIGHTP1LEFT
P1DOWNP1UP
GNDGND
NCNC
NCP2START
P1STARTSVC
NCCOIN
GNDGND

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

Power Connector CN4

PINFUNCTION
1+5V
2+5V
3GND
4GND
5NC
6+12V

Power Connector CN5

PINFUNCTION
1+5V
2+5V
3GND
4GND
5NC
6NC

Compatible Games

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

* These games are rare and their pinouts could not be verified 100%. While the game may run and display properly, the controls may not function correctly. As always, please check the pinout section to ensure your game will work with this adapter.

This adapter has been tested with a Marvin’s Maze board for compatibility.

Revision History:

Rev 1.0: Initial Design.

Specifications

Board Size: 45mm x 112mm
Current Carrying Capacity: 5V – 12A, 12V-3A