On Sun, 26 Jul 1998, Ake Hedman wrote:
> Most mouse devices today is compatible with a well known mouse from a
> Redmond based company so a PIC that handles that protocol should solve the
> "mouse problem".

Beg pardon, I will say nothing of the consequence of that company in
breaking its own standards. I will only say that my mention of Mouse
Systems mouse protocols was not accidental. The Mouse Systems protocol is
supported by all M$ products, offers 3 buttons to the benefit of Unices
and is not likely to change in the future, so no-one is going to pull the
carpet from under your design in say, like 6 months or so ? with a
'bugfix' that will put you out of business as far as this product will be
concerned. Of course, supporting both protocols is better. An automatic
detection is trivial, based on the packet length which is different, and
which you can determine by examining a few 'blocks' of consecutive packets
for the number of bytes in them (to find one that is divisible by 3 and
not by 5 and vice versa ;).

sorry for being blunt <g>,

        Peter