Hello,
I'm writing straight away to the development list, because I think I'll
have to do some coding to fix my problem:
My system is a Pentium MMX PC/104 board. Its BIOS does a pretty good job
in providing PS/2 access to USB keyboards and mice in DOS. For example,
a wireless KeySonic ACK-540RF keyboard/touchpad combo works absolutely
flawlessly using CuteMouse.
However, connecting the Ortek PKB-1760 wireless keyboard/trackball combo
to the system causes problems: CuteMouse recognizes the PS/2 mouse
without issues, but the behaviour is totally off:
Horizontal motion (X) of the trackball moves the cursor vertically (Y).
Vertical motion (Y) of the trackball does nothing.
Clicking the buttons stepwise moves the cursor to the right (+X).
The touch scroll bar does nothing. (It doesn't need to, anyway.)
Note: I tried several if not all of the command line switches. Also I
ran the original Microsoft and Logitech mouse drivers which produced the
same result.
So I suspect, instead of the normal PS/2 protocol sequence:
1st byte 2nd byte 3rd byte
+---------------+ +---------------+ +---------------+
|?|?|Y|X|1|M|R|L| |X|X|X|X|X|X|X|X| |Y|Y|Y|Y|Y|Y|Y|Y|
+---------------+ +---------------+ +---------------+
the trackball produces something non-standard like this:
1st byte 2nd byte 3rd byte 4th byte
+---------------+ +---------------+ +---------------+ +---------------+
|?|?|?|?|?|?|?|?| |?|?|Y|X|1|M|R|L| |X|X|X|X|X|X|X|X| |Y|Y|Y|Y|Y|Y|Y|Y|
+---------------++---------------+ +---------------+ +---------------+
What I want to try out: Modify the CuteMouse source code so it discards
the first byte, and reads a fourth byte from PS/2.
I already got my JWasm set up to build CuteMouse. I claim to know my way
around X86 assembly, but reading and comprehending someone other's code
is a different story. ;-)
I would be grateful for any hints in modifying the PS/2 routines in
CuteMouse.
Thanks,
Christoph
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