JAMMA to Sega System 8 Cabinet Adapter

Description

Allows you to play your JAMMA games in a cabinet wired according to the Sega System 8 pinout class used by System 1 and System 2 Sega hardware. This 8-bit hardware platform predates System 16 and was used from about 1983 to 1987 not only by Sega but also other manufacturers such as CoreLand and Vic Tokai.  See list below.

Please confirm the pinout in the table below matches the wiring of your cabinet. This is especially important for cabinets that have less than 3 buttons and only one coin switch.

Images

Pinout

This adapter connects to the cabinet according to the following pinout scheme:

SOLDER SIDE PARTS SIDE
GND GND
GND GND
+5V +5V
+5V +5V
COUNT2 COUNT1
NC +12V
P2B3 P1B3
P2B1 P1B1
P2B2 P1B2
NC NC
P2DOWN P1DOWN
P2UP P1UP
P2RIGHT P1RIGHT
P2LEFT P1LEFT
P1START COIN1
P2START COIN2
NC TEST
NC SVC
SPK- SPK+
VGREEN VRED
VSYNC VBLUE
GND GND

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

Button and Switch Layout:

In most circumstances this adapter will work as intended with your cabinet without any modifications. Problems may occur playing some JAMMA games in a modified cabinet with less than 3 buttons, or only one coin switch present.

If the button order is wrong you may need to swap the wires going to the buttons behind the control panel. If a button doesn’t register at all, say only JAMMA button 2 and 3 work, you may need to run a jumper from button 3 to button 1 at the cabinet wire harness edge connector.

If game can’t be coined up, say in a case where only COIN2 switch is wired in the cabinet, and the game only supports the COIN1 switch, you may need to swap the coin wires on the harness or potentially jumper them together to get the game to coin up.

Compatible Games

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

* The 36 pin version of Gigas with an additional connector for spinner controls will not work with this adapter.

Revision History:

Rev 1.0: Current publicly available design.

Board Size: 47mm x 112mm
Current Carrying Capacity: 5V – 12A, 12V-3A