Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!oliveb!amiga!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Joystick Port Question
Message-ID: <7391@cbmvax.UUCP>
Date: 21 Jul 89 08:19:55 GMT
References: <7991@cs.Buffalo.EDU>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 24

In article <7991@cs.Buffalo.EDU> uggbrand@cs.Buffalo.EDU (G. Brandon Brooks) writes:
> 
> 	I am trying to design a program that would allow the Atari ST
> mouse to work with my Amiga. My friend has an extra Atari mouse and my Amiga
> mouse is dead, so it would be a lot cheaper to use his extra ST mouse.
> 	I tried intercepting the signals from the gameport device using
> GPCTRelJoystick and GPCTMouse, but those don't seem to give all the values
> that I need. What I really want to be able to do is to read in the values
> of all 9 pins (or whatever ones the Amiga can read). Is there a way to do
> this that anyone can help me with?

Just make a little adapter that swaps the four quadrature lines around
and it'll work good.  Nothing more complicated is needed.  I don't
remember the exact pinout difference, but they're in the manuals shipped
with each system.

I don't know that you can do it in software, since Denise processes a
the mouse signals in hardware and if you have X and Y crossed you aren't
going to get anything meaningful.

-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)