Description
Alpha Denshi, later renamed to ADK Corporation was an arcade game manufacturer mainly known for their Neo-Geo releases. In the 1980s however, Alpha Denshi released a number of arcade titles on their own platform. There was a mix of games that ran on unique hardware with different pinouts, and also some that ran on a common hardware platform with the same pinout. These games can be easily identified by the additional 12 pin video edge connector of the video board. This adapter converts only the Alpha Denshi games with this connector.
Images
Pinout
This adapter follows the following pinout scheme:
Main Connector
| SOLDER SIDE | PARTS SIDE |
|---|---|
| GND | GND |
| GND | GND |
| GND | GND |
| NC | VSYNC |
| NC | VRED |
| P2START | VBLUE |
| P2B3 | VGREEN |
| P2B2 | P2UP |
| COIN2 | P1START |
| COIN1 | P1B3 |
| NC | P1B2 |
| NC | P1B1 |
| P2B1 | P1LEFT |
| P2LEFT | P1RIGHT |
| P2RIGHT | P1DOWN |
| P2DOWN | P1UP |
| +5V | +5V |
| +5V | +5V |
(PCB edge connector facing away, list is ordered right to left)
Sound Board Connector
| PIN | FUNCTION |
|---|---|
| 1 | +12V |
| 2 | +5V |
| 3 | SPK+ |
| 4 | SPK- |
| 5 | GND |
| 6 | GND |
Compatible Games
This is the list of compatible games that can be used with this adapter:
The adapter has been tested with
Revision History:
Rev 1.0: Initial Design – current production version.
Specifications
Board Size: 49mm x 112mm
Current Carrying Capacity: 5V – 12A, 12V-3A