From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu,  6 Apr 1995 15:35:16 -0400
From: Protius tjohnson@gloria.cord.edu
Subject: question about PC's
Topicbox-Message-UUID: 0b2a329a-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19950406193516.BEaaY9NccnBPDQwtuLdhNjgDPTVfT030dTHkQ9FfZkQ@z>

rob@plan9.att.com said:
>they generate raw quadrature, but modern machines use serial input.
>the company that makes them sells a serial version, but only two buttons
>work.

It should be possible to take a $10 "modern" mouse, gut it, and feed the
raw quadrature and button switches from the DMD mouse in where the real
buttons and optical encoders used to be.  If you use opto-couplers, it
wouldn't even be a different component (a photo-transistor).  You might
need a seperate power supply for the +5 volts though.

Here is the pinout off of my DMD mouse:
1: +5 volts
2: vertical phase 0
3: vertical phase 1
4: horizontal phase 0
5: horizontal phase 1
6: ground
7: middle button
8: right button
9: left button

-Tommy
tjohnson@cobber.cord.edu