ubuntu-x-swat team mailing list archive

[Márton Németh <nm127@xxxxxxxxxxx>]

I corrected the debug patch to handle values bigger than 0x7FFFFFFF
correctly.

I did some investigation with different pos and offset settings. I could
find out that:

when writing to the pos and the offset registers there are the following fields:
 - the vertical position (y) is a 11bit wide register at bits pos[10:0]
 - the horizontal position (x) is a 12bit wide register at bits pos[27:16]
 - the vertical offset (y) is a 7bit wide register at bits offset[6:0]
 - the horizontal offset (y) is also a 7bit wide register at bits offset[22:16]

All other bits are ignored when writing and interpreted as if they were
set to 0 by hardware.


** Attachment added: "openchrome-debug-cursor-position2.patch"
   http://launchpadlibrarian.net/28135710/openchrome-debug-cursor-position2.patch

-- 
[K8M800] mouse pointer corruptly displayed at the bottom of the X screen
https://bugs.launchpad.net/bugs/386740
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