Messages in this thread |  | | | From | Shane Nay <> | | Subject | Re: PS/2 mouse latency was Re: [linux-audio-dev] Re: [DATAPOINT] kernels and latencies | | Date | Wed, 5 Jul 2000 00:30:46 +0000 |
| |
> > The PS/2 mouse interface has an incestuous relation to the keyboard > controller; they use the same registers. Keyboard controller is writen > to regularly in the keyboard interrupt when you press a key. Both > have to be serialized. > > > -Andi
(Sort of OT) I realized that the PS/2 controller snagged a few of the upper bits or something like that in the region that communicates with the keyboard. (Been a long time since I looked at this) Is this the case on all arches/platforms, for instance when the SPARC uses a PS/2 mouse does it use the same sort of relationship between the keyboard and the mouse?
Thanks, Shane.
(This is curious to me because I have a Vr-4121 based Workpad that's running the Vr series kernel, and I have yet to get the PS/2 Trackpoint working on this little device. I pulled the machine to pieces and identified the controller chip which was PS/2, but was unable to trace this back to a GPIO on the processor, or back into the keyboard control interface. The trackpoint chip is the same as those employed in IBM laptops.)
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
|  |