CHAMMA to JAMMA Adapter

Description

Allows you to use your Pandora Box, Game Elf or similar multi game boards with the CHAMMA pinout, in a JAMMA 6 button cabinet.

CHAMMA (Chinese JAMMA) is a 6 button per player JAMMA pinout variant that has buttons 5 and 6 on pin 26, 27, 54, 55 of the 56 pin edge connector.

This is incompatible with the JAMMA standard due to pin 27 and 55 being wired to ground, and pin 26 and 55 typically unused. All 6 button JAMMA cabinets must therefore supply an additional wire harness for buttons 4-6 to remain fully compatible with the JAMMA standard.

This adapter can be used to connect multi game boards that use the CHAMMA standard to the existing wiring in the most popular 6 button JAMMA cabinets. Button 4-6 harness headers are included for cabinets such as Street Fighter 2, Mortal Kombat 1, Mortal Kombat 2+ and Killer Instinct.

Images

Pinout

This adapter follows the following pinout scheme:

Edge Connector
SOLDER SIDEPARTS SIDE
GNDGND
GNDGND
+5V+5V
+5V+5V
-5V-5V
+12V+12V
KEYKEY
COUNT2COUNT1
LOCK2LOCK1
SPK-SPK+
NCNC
VGREENVRED
VSYNCVBLUE
SVCVGND
TILTTEST
COIN2COIN1
P2STARTP1START
P2UPP1UP
P2DOWNP1DOWN
P2LEFTP1LEFT
P2RIGHTP1RIGHT
P2B1P1B1
P2B2P1B2
P2B3P1B3
P2B4P1B4
P2B5P1B5
P2B6P1B6
GNDGND

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

Street Fighter Harness
PINFUNCTIONJAMMA PIN
1GND
2GND
3P1 LKP1 B4
4P1 MKP1 B5
5P1 HKP1 B6
6NC
7P2 LKP2 B4
8P2 MKP2 B5
9P2 HKP2 B6
10NC
Mortal Kombat I Harness
PINFUNCTIONJAMMA PIN
1NC
2NC
3NC
4P2 LPP2 B4
5NC
6KEY
7P2 LKP2 B6
8NC
9P1 LPP1 B4
10P1 LKP1 B6
11NC
12NC
Killer Instinct Harness
PINFUNCTIONJAMMA PIN
1GND
2NC
3NC
4NC
5NC
6NC
7P1 LKP1 B4
8P1 MKP1 B5
9P1 HKP1 B6
10NC
11P2 LKP2 B4
12P2 MKP2 B5
13P2 HKP2 B6
14NC
15NC
Mortal Kombat II+ Harness
PINFUNCTIONJAMMA PIN
1NC
2NC
3NC
4NC
5NC
6NC
7P1 LPP1 B4
8P1 LKP1 B6
9P1 RUNP1 B5
10NC
11P2 LPP2 B4
12P2 LKP2 B6
13P2 RUNP2 B5
14NC
15NC

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

Compatibility:

The adapter has been tested with a Game Elf and Pandora game boards.

Some compromises had to be made in order to allow for the best possible game experience in 5 or 6 button Mortal Kombat cabinets. In 5 button Mortal Kombat cabinets, CHAMMA button 5 (SF2 medium kick) is unavailable and CHAMMA button 6 is mapped to cabinet’s low kick. In Mortal Kombat 6 button cabinets with a run button, the run button is mapped to CHAMMA button 5. This configuration is the closest to a Street Fighter 2 button layout.

However, on Pandora Box boards, Mortal Kombat (the only MK game) uses button 5 as low kick and button 6 as block, so the game will not have the correct button layout in any of the cabinets used. Please keep this in mind if playing a choppy version of MK1 is important to you. The newest multi game boards have a button remapping feature which overcome this issue.

As always, before ordering and connecting your board, please check and verify the pinout information below.

Revision History:

Rev 1.0: Initial Design.

Specifications

Board Size: 30mm x 112mm
Current Carrying Capacity: 5V – 12A, 12V-3A, -5V – 3A