JAMMA to Nintendo Cabinet Adapter

Description

Allows you to play your JAMMA games in a Nintendo cabinet.

The original Nintendo PCBs output inverted video signals and require an external sound amplifier, while bootlegs output normal video signals and have an on-board sound amp. The cabinet, depending on what game is inside, will likely have the audio amplifier and the original inverting monitor, but not necessarily.

As a result this adapter includes a sound attenuating circuit and a video inverter. The low cost, high speed video inverter can be disabled on the adapter making it compatible with both original and modified cabinets via a couple of jumpers.

The signal DC offset for each color (Red, Green and Blue) can also be adjusted to display properly on am inverting monitor. The video inverter is a simple linear design for the best possible picture at a low cost.

Images

Pinout

This adapter follows the following cabinet pinout scheme:

SOLDER SIDEPARTS SIDE
GNDGND
GNDGND
+5V+5V
+5V+5V
+12V+12V
-5V-5V
COIN1COIN2
P1STARTP2START
P1RIGHTP2RIGHT
P1LEFTP2LEFT
P1UPP2UP
P1DOWNP2DOWN
P1B1P2B1
NCNC
SVCCOUNT2
GNDGND
VREDVGREEN
VBLUEVSYNC
AUDIOSPK+
COUNT1+24V
GNDGND
GNDGND

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

Compatible Cabinets

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

Revision History:

Rev 1.0: Initial Design.

Rev 1.1: Changes to the video inverter DC offset. This is the current production version.

Specifications

Board Size: 50mm x 112mm
Current Carrying Capacity: 5V – 12A, 12V-3A, -5V-3A