By Ben Lincoln

Note: The following information comes from a Usenet message posted to the group in August of 1995. You can see the original post on Google Groups.

Subject: Re: Where are the O^2 pinouts?
From: Bruce Tomlin

Here's what I have in my archives:

From: Ben Lincoln
Subject: O2 Joystick patch Date: 6 Aug 1995 19:39:06 GMT

Okay... I've been meaning to post this for awhile, but I couldn't find my notes on the pinouts for the two systems involved. Anyway, here is how to modify an Odyssey^2 system to use Atari 9-pin joysticks.

First, a note: This research was done on a later-model O2--It has a standard RF cable, and the Odyssey2 logo is on a raised plate rather than simply stenciled on the unit.

Materials needed:

  1. A Hex driver (Size unknown). A rachet set might work as well.
  2. 2 Atari 9-pin style joystick ports.
  3. Some solder and an iron, OR electrician's tape for the quick version.

The procedure:

  1. Open the O2 case, and remove the bottom half.
  2. Chop off the joystick cables about 1 to 1-1/2 feet from the connector on the motherboard.
  3. Looking at the connector on the motherboard, the following wires should be exposed just before they enter the cable cover:
    • (Left to Right)
    • Red
    • Orange
    • Yellow
    • Green
    • Black
    • White
  4. Strip the ends of the whacked-off joystick cable to the bare wire, and splice them into the Atari ports as follows:
    (Atari port diagram)
    Atari port diagram
    (Front view--These are the pins the joystick will connect to. They are pointing towards you).
    FunctionOdyssey 2Connects to Atari Pin #
    Joystick UpRed5
    Joystick DownYellow4
    Joystick LeftGreen3
    Joystick RightOrange2
  5. Mount the ports anywhere you want. I'm thinking of doing mine 7800-style, on the front of the O2.

I've only tried this on mine, so any corrections are greatly appreciated.


Ben Lincoln     +/\s