Date   : Wed, 21 May 1986 09:18:02-EDT
From   : Gern <GUBBINS@RADC-TOPS20.ARPA>
Subject: Re: Commodore 128 Mouse Interface

I plugged the C-128 mouse into the rig of my own design and manufacture
for a Z-100.   I also plugged a regular joystick into the mouse program.
I did not put the mouse on a scope, but the results are conclusive:
The C-128 is not a real mouse, but is an inverted tracball (probably
using the same IC that is in the tracball too).  It does not yield any
stepping increments or my custom software would have been able to detect
it.    A REAL mouse costs money to make, the C-128 is cheap.
The Commodore man is full of it, you can check it out for yourself.

Cheers,
Gern