Re: [9fans] Re: random moving of cursor arrow

[David Presotto <presotto@closedmind.org>]

I'll bang at serial ports tomorrow and see if I can figure out what's happening.
With modern machines, I shouldn't get overruns even without the fifo.  I used
to avoid the fifo for mice because it made the mouse jerky.

Everything related has changed of course; uart driver, clock routine, and
scheduler.  Any could be at fault.  I'll plug some machines back to back and
see if I can cause overruns.  A mouse really shouldn't be able to though,
it's only 9600 baud or less.  If we're missing, something is really
screwed up.  We only use ps2 mice these days but I can scrounge up some
serial ones.

It is true that if the mouse is misidentified, it will cause exactly the
behavior babic is seeing, i.e., if it guesses the wrong protocol.