Table of Contents
Sega Naomi Analogue Panels
Sega's Naomi platform had many different control panels, and many of the analogue panels shared a common connector. The panel connector is a 10-pin, but many of the cabs used an 8-pin connector for each player, and so an adaptor is required.
Above: Bottom view of a 2-player Dynamite Baseball panel, player 2 side. The dual-axis analogue stick is on the left, the single axis 'bat' mechanism is on the right.
Digital buttons (Start, B1, B2 etc) are routed as normal through the 12-pin P1 and P2 connectors.
Driving games such as Crazy Taxi use the analogue lines, but not the replaceable panels like the one shown above. The channels used by driving games are on the Sega *City Cabinet Pinouts page.
The terms V-ref and Vcc are used interchangeably in Sega docs, but they refer to the same thing: 5 volts.
Controls Connectors
This panel has a 4-pin connector from each two channel analogue joystick, and a 3-pin connector from the single channel bat mechanism. Both the 1P and 2P sides are combined into a single 10-pin connector.
Analogue Joystick Connector
| Pin | Signal |
|---|---|
| 1 | Vcc |
| 2 | V Axis (Channel 0) |
| 3 | H Axis (Channel 1) |
| 4 | Ground |
Analogue Bat Connector
| Pin | Signal |
|---|---|
| 1 | Vcc |
| 2 | Bat (Channel 2) |
| 3 | Ground |
Analogue Panel Connector
This connector is used on the Dynamite Baseball and Zombie Revenge panel, and others.
Generic Pinout
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | P1 Channel 1 | 6 | P2 Channel 2 |
| 2 | P1 Channel 2 | 7 | P2 Channel 3 |
| 3 | P1 Channel 3 | 8 | P2 Channel 4 |
| 4 | Channel 4 | 9 | Vcc |
| 5 | P2 Channel 1 | 10 | Ground |
Specific Functions
The pinout below is the same for Zombie Revenge and Dynamite Baseball, except the former does not have the bat signal (though a dedicated bat swinging control for a zombie beat-em-up would be fun…)
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | P1 V Axis | 6 | P2 H Axis |
| 2 | P1 H Axis | 7 | P2 Bat* |
| 3 | P1 Bat* | 8 | N/C |
| 4 | N/C | 9 | Vcc |
| 5 | P2 V Axis | 10 | Ground |
Monkey Ball
Monkey Ball has the Vcc and Ground lines reversed, so the joystick would appear rotated 180° to other analogue games.
A diagram for a switch to reverse the axes is available here.
Analogue Cabinet Connector
This connector is used in the Naomi Universal Cabinet, and probably the New Net City, and others. There are two of these connectors, one for each player. Four analogue channels are supported. Zombie Revenge uses two, Dynamite Baseball uses the same two, and the third channel for the bat mechanism.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | V-Ref* | 5 | Channel 2 |
| 2 | V-Ref* | 6 | Channel 3 |
| 3 | Channel 0 | 7 | Ground |
| 4 | Channel 1 | 8 | Ground |
Note:
10 to 8 pin adaptor
If you're installing one of these panels in a Naomi cabinet that uses two 8-pin analogue connectors you will need to make an adaptor.
This diagram shows all four channels routed to their appropriate destinations. Obviously not all four channels are required for all games.
Sega's own documentation showed that Vcc was routed only to P1, and Ground was routed only to P2. There's no real reason to do it this way, except that it makes an equal number of wires to each connector. Only one each Vcc and Ground needs to be connected to the 10-pin connector.
| 10-pin | 8-pin | 10-pin | 8pin |
|---|---|---|---|
| 1 | 3 | 6 | P2 4 |
| 2 | 4 | 7 | P2 5 |
| 3 | 5 | 8 | P2 6 |
| 4 | 6 | 9 | Vcc |
| 5 | P2 3 | 10 | Ground |
- Source: Arcade Projects Forum