Messages in this thread | | | Date | Tue, 27 Jul 1999 12:02:37 +0100 (GMT) | From | Riley Williams <> | Subject | Re: Microsecond resolution timers - final word |
| |
Hi Robert.
>> When you say "modify the hardware", do you mean just the device >> at the far end of the wire, or the PC as well?
> Annoyingly, neither. There's a couple of friends of mine who > have similar hardware, but don't want to change anything. And > same goes for me. Besides, I have code for dos that will work > with it, this microsecond stuff is the only hurdle I have to > overcome.
> Incidentally, the dos version does its timing using the hardware > timer at 0x40-0x5f...
Presumably via a driver that plugs itself in there, then resets the timer to spin faster and only passes through every 100th (or whatever) tick to the routine behind it...
> ...though I don't think I'm allowed to do that.
Nope, but you might wish to have a look at the various patches that raise Linux's HZ rate as those also allow suchlike increases to take place in a compatible manner...
> Thanks for the ideas though :)
No problem...
Best wishes from Riley.
+----------------------------------------------------------------------+ | There is something frustrating about the quality and speed of Linux | | development, ie., the quality is too high and the speed is too high, | | in other words, I can implement this XXXX feature, but I bet someone | | else has already done so and is just about to release their patch. | +----------------------------------------------------------------------+ * ftp://ftp.MemAlpha.cx/pub/rhw/Linux * http://www.MemAlpha.cx/kernel.versions.html
- 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/
| |