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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Gavilan on March 27, 2004, 11:21:23 PM

Title: Amiga and Atari mouse compatibility
Post by: Gavilan on March 27, 2004, 11:21:23 PM

Is it possible to use an Atari mouse on the Amiga and viceversa??

Title: Re: Amiga and Atari mouse compatibility
Post by: xeron on March 27, 2004, 11:32:50 PM

Not unless you write a special driver. Amigas and Ataris use different standards. Back in the day, 3rd party mice often had a switch on the bottom to select Amiga or Atari mode.

Title: Re: Amiga and Atari mouse compatibility
Post by: Stedy on March 28, 2004, 12:47:03 AM

It should be possible.

I reverse engineered a Wizard mouse and the Amiga/Atari switch swaps over pins 1 (V-Pulse) and pin 4 (HQ-pulse).

So if you swap pins 1&4 it should work.

I can post the schematic of the Wizard mouse if that helps.

Title: Re: Amiga and Atari mouse compatibility
Post by: Gavilan on March 28, 2004, 02:38:28 AM

Hi Stedy! if you are kind enough, please please post the schematics!
Kind Regards!!!

Sebastian

Title: Re: Amiga and Atari mouse compatibility
Post by: Karlos on March 28, 2004, 03:48:59 AM

Quote

xeron wrote:
Not unless you write a special driver. Amigas and Ataris use different standards. Back in the day, 3rd party mice often had a switch on the bottom to select Amiga or Atari mode.

Hey, I still got one of those :-D I think the main difference between the modes was that atari mode didn't seem to use the quadrature pulse signals - I expect the hardware for that was internal. Buttons still work, but moving the mouse just creates single pixel wobbles :-)

-edit-

Well I was clearly wrong about that, but the signals get swapped over :-)

Title: Re: Amiga and Atari mouse compatibility
Post by: adolescent on March 28, 2004, 04:26:49 AM

Stedy is correct.  Just swap pins 1 and 4 to use an Amiga mouse on an Amiga, and the oposite.