Re: ps2/ new data for mouse protocol (fwd msg attached)

From: Erik Mouw (J.A.K.Mouw@ITS.TUDelft.NL)
Date: Tue Jul 24 2001 - 18:23:34 EST

On Tue, Jul 24, 2001 at 07:32:29PM +0200, Nico Schottelius wrote:
> Have a look into the attached email before reading mine, please.
> Is it possible to find out about what those bytes are ?
> And is it possible to intergrate the support for other
> 3 bytes into the Linux kernel ?

So they put information about four buttons in six bytes and call that
proprietary? ROFL! How hard can it be? I think it will be fairly
straight forward to reverse engineer the format, it can't be rocket


> From: "Fidel Zawde" <>
> To: <>
> Date: Thu, 15 Mar 2001 10:21:22 -0800
> Subject: FW: informations needed of touchpad
> Hello,
> In order to use four buttons the data packages must be larger than the
> standard 3 bytes. The data packages that the touchpad sends in absolute
> mode is 6 bytes. The information on how the buttons are inserted into the 6
> byte packet is proprietary. However, if you would like more information on
> the data packets that are sent from the touchpad you can download the
> "Synaptics Touchpad Interfacing guide" from our website

J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2783635  Fax: +31-15-2781843  Email:
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This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:20 EST