Thread: Girder Help! Separate Inputs from USB Touchscreen & PS/2 Mouse

Originally Posted by wolfebaine

Get a serial mouse. It'll be alot easier.

Great Idea! Except that I don't think they make a 5-button & analogly encoded scroll-wheel serial mice.

This really got me thinking though... Is there a way to emulate the PS/2 mouse into a COM# port so that the computer can handle it differently?

That way I'd be able to use a different Girder plug in (I think Igor's) that would handle COM Port Device behavior.

In answer to my own question, I found the following solution dating back to 1996! Can anyone confirm this stuff actually works with newer mice?
Maybe most of the modern mice have that "combined-mouse" feature the author is referring to?

Originally Posted by Kristjan Plaetzer

A normal serial mouse can not be used on the PS/2 mouse port. Even the
available "serial-to-PS/2" adapters do not help. The signals and the
protocol is too different. Only a PS/2 mouse does work on a PS/2 port. By
the way there are some kind of "combined-mice" just as Microsofts
"Serial/Mouse Port Compatible Mouse 2.0" (Nr. 58264) and Logitechs MouseMan
M-CJ13 and TrackMan T-CC2-9F. The owner of such a Logitech-mouse can use a
Sub-D-plug. Here is the pin-mapping for such an adapter:

Code:

       6 # 5                 1 2 3 4 5
      4     3                 6 7 8 9
       2   1
  
  PS/2           Sub-D-plug for Logitech

    1 -------------------- 9 (Data)
    3 -------------------- 5 (Gnd)
    4 -------------------- 8 (+5 V)
    5 -------------------- 1 (Clock)

The diagram shows the view onto the contacts and not onto the soldering
side. This special solution is only possible for those two Logitech-types,
no other serial mouse is able to use the PS/2 signals.

The diagram shows the view onto the contacts and not onto the soldering
side. This special solution is only possible for those two Logitech-types,
no other serial mouse is able to use the PS/2 signals.

Kristjan Plaetzer