Good news, bad news... Amiga News!

From: John Honniball <>
Date: Thu Jan 20 17:30:42 2005

Roger Merchberger wrote:
> I have a mouse for my Atari ST that's switchable to Amiga, but I cannot
> locate it right now...

I've had a look at the data sheets for HP/Agilent optical mouse chips.
The chips have a mode whereby they emulate a traditional opto-mechanical
mouse by generating X and Y quadrature signals at TTL levels. I have
a couple of cheap (?6) optical mice here that I bought with the
intention of re-wiring them to work on either Atari ST or Amiga.

I think PS/2 interfaces are considered "legacy" nowadays, so the PS/2
mice were cheaper than the USB ones. Oh, that's the other mode for
the chip: direct PS/2 interface.

John Honniball
Received on Thu Jan 20 2005 - 17:30:42 GMT

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