Description
Millipede was Atari’s follow up to the massive arcade hit Centipede. While it didn’t sell nearly as many units as the original game, it is certainly a worthy sequel and arguably a better game.
As with all Atari games of that period, Millipede has a unique pinout, and while it may not look like it, it is quite different from Centipede’s pinout. Like its predecessor, the game uses a trackball but is also capable of accepting normal joystick inputs which greatly simplifies the conversion to JAMMA.
Interestingly enough, the joystick and button controls are buggy and do not work properly in two player cocktail mode with some board revisions, a problem found in some Centipede boards as well.
Images
Pinout
This adapter follows the following pinout scheme:
Main Connector (44 pin)
| SOLDER SIDE | PARTS SIDE |
|---|---|
| GND | GND |
| +5V | +5V |
| NC | +22V |
| NC | -22V |
| +5V (10.3V) | RESET |
| TEST | COIN1 |
| COCKTAIL | COIN2 |
| NC | NC |
| P1START | TILT |
| P2B1 | P2START |
| P2UP | P1B1 |
| P1UP | P1DOWN |
| P1RIGHT | P2LEFT |
| P1LEFT | P2RIGHT |
| P2VDIR | P2DOWN |
| P2HDIR | P2VCLK |
| P1VDIR | P2HCLK |
| P1HDIR | +5V (10.3V) |
| -22V | P1VCLK |
| +22V | P1HCLK |
| +5V | +5V |
| GND | GND |
Secondary Connector (24 pin)
| SOLDER SIDE | PARTS SIDE |
|---|---|
| VRED | GND |
| VGREEN | GND |
| VBLUE | GND |
| NC | GND |
| VVSYNC | NC |
| VCSYNC | VGND |
| VHSYNC | NC |
| NC | NC |
| P2LED | NC |
| P1LED | COUNT1 |
| AUDIO1* | AGND |
| AUDIO2 | COUNT2 |
(PCB edge connector facing away, list is ordered right to left)
Note: Joystick controls are buggy in some versions of Millipede.
Compatible Games
This is the list of compatible games that can be used with this adapter:
The adapter has been tested with a genuine version of Atari Millipede.
Revision History:
Rev 1.0: Initial Design.
Rev 1.1: Changes to how some power pins are routed for improved picture and sound.
Specifications
Board Size: 50mm x 190mm
Current Carrying Capacity: 5V – 12A, 12V-3A, -5V – 3A