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From: david@kessner.denver.co.us (David Kessner)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Hacking a Microsoft mouse for the Amiga
Message-ID: <1991Feb27.061859.2533@kessner.denver.co.us>
Date: 27 Feb 91 06:18:59 GMT
References: <667620358wkn28203@edmund.cs.andrews.edu>
Reply-To: david@kessner.UUCP (David D. Kessner)
Distribution: na
Organization: Kessner, Inc
Lines: 55

In article <667620358wkn28203@edmund.cs.andrews.edu> easton@edmund.cs.andrews.edu (Jeff Easton) writes:
>
>  Well, I've succeeded in hacking up my Microsoft serial mouse (the
>white dove bar one) to work on my Amiga.  It appears to need the following
>to get it to talk to the Amiga;
>
>	1> removal of the uP in the Mouse

Can I cringe now?

>	2> Add a limiting resistor for the LED's

LED's?  Mouse?

>	3> Change a resistor for the Comparator's voltage divider
>	4> A new cord w/9 wires + shield.  (salvagable from Amiga Mouse?)
>
>  This hack is not for the faint at heart.  It requires desoldering IC's
>and surface mount parts.  Take apart the mouse and look at the bottom of
>board for an idea of whats involved.
>
>	Jeff Easton			Zenith Data Systems
>	easton@andrews.edu

Jeff...  Did you know that the PC bus mice can be hooked up to an Amiga with
nothing more than a 9 pin mini-din to a DB-9 connector?  No modifications to
the mouse are needed, and will work with most bus-mice rather than just the 
microsoft mouse.  

I forgot the exact wiring for the connector (since I do not own an Amiga-- I
gave a friend my old bus-mouse).  Here is the pin-outs for the mini-din, you
can probably figure out the rest from there-- otherwise leave me mail:

	1 -	+5v
	2 -	X quadrature A
	3 -	X quad B
	4 -	Y quad A
	5 -	Y quad B
	6 -	Button 1
	7 -	Button 2
	8 -	Button 3
	9 -	Ground
	E -	Chassis Ground

Using this arrangement makes chances of the modification working MUCH better
since there is no internal changes that need to be done.  If a company would
ever catch wind of this, they would make a small adapter to do this and sell it
for $5...

					- David K

-- 
David Kessner - david@kessner.denver.co.us            | do {
1135 Fairfax, Denver CO  80220  (303) 377-1801 (p.m.) |    . . .
This is my system so I can say any damn thing I want! |    } while( jones);