Good news, bad news... Amiga News!

[John Honniball]

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
coredump at gifford.co.uk