PS2 Mouse - test-drb@ccmp.vtda.org

9 Feb 2003

Tony, 

...
  While this is true on the genuine PS/2 machines (and
the mouse protocol
 is very similar to a PC/AT or PS/2 keyboard protocol), there's no reason
 why it _has_ to be. It would be possible to make an ISA card with a
 programmed microcontroller on it (maybe an 8042, like the keyboard
 controller) with the host port at some otherwise unused I/O address, and
 then use a special driver (similar in concept to the serial and bus mouse
 drivers) to access it. 
well, I suppose if you're going to go the microcontroller route you may as well
make it an external unit with the serial controller included... no messing
around with custom drivers on the host system then. Bit beyond me though I'm
afraid, but as the original poster said I'm surprised nobody's done it,
especially a hobbyist...

I suppose it'd need its own power supply though which is a shame.

cheers

Jules
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