Re: [driver] New life for Serial mice

Pavel Machek
2001-06-08T16:21:35Z

Hi!

> > > If you still have your 3-button MouseSystems (or any other serial) mouse
> > > somewhere in your driver, forgotten becase of the incredibly slow update
> > > rate causing so much jumping of the pointer on the screen that it is
> > > unusable, you may want to pull it out and give it a try.
> > >
> > > Or if you're still using it with some old 486 computer, this driver is
> > > for you.
> > >
> > > What it does is that it enhances the update rate from 24 (with current
> > > GPM and X drivers) to 96. This is almost what the best USB mice do.
> >
> > What's the "prediction" stuff? Does it mean you are guessing some values
> > by interpolation?
>
> Extrapolation, yes.

Can't it make mouse jump forward and back when user suddenly stops?

> > [If so, what kind of update rate would it do on USB?]
>
> It wouldn't make any difference - on USB you always get whole packets,
> while over serial port the data is processed byte by byte and thus we
> know a little of the information before the whole packet arrives.

Ouch, nice trick!
Pavel
--
The best software in life is free (not shareware)! Pavel
GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+