[comp.sys.atari.st.tech] MS mouse on an ST, I know it was asked before.

mjducey@rodan.acs.syr.edu (Matthew J. Ducey) (02/01/91)

Well I didn't read it because I didn't have one, now I have a MS mouse.
can I use it with the ST?  How did you do it?

-- 
 But I still like my ST...         HP-48SX            GEnie     M.DUCEY
 SOCEUR (A)                                         Bitnet    mjducey@suvm
 "But Sgt. Airborne, look how high we are"!       mjducey@rodan.acs.syr.edu

dalessio@motcid.UUCP (Mario D'Alessio) (02/02/91)

mjducey@rodan.acs.syr.edu (Matthew J. Ducey) writes:

>Well I didn't read it because I didn't have one, now I have a MS mouse.
>can I use it with the ST?  How did you do it?

>-- 
> But I still like my ST...         HP-48SX            GEnie     M.DUCEY
> SOCEUR (A)                                         Bitnet    mjducey@suvm
> "But Sgt. Airborne, look how high we are"!       mjducey@rodan.acs.syr.edu

If the mouse is a bus mouse, all you need to do is build a connector.
If the mouse is a serial mouse, more work is involved. The guts of
the mouse that converts the output from the sensors to serial data
need to be bypassed. This is the situation I am in and someone is
going to try to help me do this. If I am successful, I will post
some information to the net.

If you have the bus mouse, here is the message that was posted by
someone else on building the connector. Good luck.

----------------- BEGIN INCLUDED MESSAGE ---------------------

Well, here is how to connect a Microsoft Mouse to an Atari ST.  (520/1040)
The Atari has a 9-pin D-type connector.  The Microsoft Mouse has a rather
strange connector on the end.  To prevent having to cut the mouse cable up,
I made this adaptor.  If you still can't follow it, please let me know and
I'll try to redescribe it.  This does work for me.  I've been using it for
6 or so months now [Note, it's been 2 years now!] with no problems at all.
It does take some soldering skills, so if you're not so hot at soldering,
find a friend to help.


As far as I know, this does not effect your Atari's warranty.  However, I
have not asked Atari.

Atari ST	Microsoft Mouse			ST expected signal
----- --	--------- -----                 -- -------- ------
1		5				XB
2		3				XA
3		8				YA
4		9				YB
5		N/C				N/C
6		2				Left button
7		N/C				+5VDC (N/C)
8*		6 and also tie to pin 1		Ground
9		7				Right button

* = I am not sure why I have pins 6 & 1 tied together, but it does work.

The Microsoft mouse connector looks like this.  This is the solder side,
with the leads pointing up.

  ---------------
  |     1       |
  |  2 3 4 5    |
  | 6 7 8 9 10  |
  |             |
  ---------------


  If you can not use the connector, the pins are numbered as follows.  This
  is the connector side from the Microsoft Mouse plug:


	  /------------\	This is a view at the front of the connector.
	 / Blank "KEY"  \	It is where the plug from the mouse would be.
	/----------------\	The pin labeled 'n' is not connected.
	| n   4   X   8  |	The place labeled 'X' is filled, and does not
	| 9   7   1   2  |	have a pin.
	|     5   6      |
	 \              /
	  \------------/ 


Have fun!

	-Jeff
-- 
Jeff Beadles		jeff@onion.pdx.com

----------------- END INCLUDED MESSAGE ---------------------


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* ************************************************************** *
* *                                                            * *
* *  Mario D'Alessio            Motorola, Inc.                 * *
* *  dalessio@motcid.UUCP       Cellular Infrastructure Group  * *
* *                                                            * *
* ************************************************************** *
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