Why is it that Omega Race works with the 2 button Colecovision ctlr, yet..

[ave1]

...yet the CBS Games Booster Grip with 2600 joystick (which is essentially a two button-functioning controller) doesn't work on the Colecovision?

 

Is there a way to get the 2600 controller with Booster Grip to function as a two-button Colecovision controller by adding a resistor or cutting a wire going to one of the pins? I even have a Champ Keypad that can be put in between the Atari stick and Colecovision for keypad purposes to make this even more compatible...

[Supergun]

The short answer is that the pin outs are different.

 

Although the Atari 2600, Atari 7800, Atari XE, Colecovision, Sega Master, Sega Genesis, etc. all use the same 9 pin joystick connectors, the functions they assign to the 9 pins is not the same on them. Some are almost identical and even compatible, but not perfect.

[VectorGamer]

If Omega Race works with the CV controller, why doesn't someone hack Stargate so it can be played with a CV or other 2 button controller?

[+SpiceWare]

If Omega Race works with the CV controller, why doesn't someone hack Stargate so it can be played with a CV or other 2 button controller?

It's been done - Defender 2. Works with Sega Genesis gamepads, and probably the Amiga CD 32 Joypad.