cvs commit: src/sys/kern subr_param.c
wb at freebie.xs4all.nl
Mon Nov 8 11:44:43 PST 2004
On Mon, Nov 08, 2004 at 06:50:33PM +0000, Paul Richards wrote..
> On Sat, Nov 06, 2004 at 04:03:12PM -0800, Kris Kennaway wrote:
> > On Sat, Nov 06, 2004 at 03:50:06PM -0800, Nate Lawson wrote:
> > > I was traveling out of the country so I didn't get a chance to comment.
> > > The two caveats I'm aware of is a slight loss in processes that are
> > > CPU bound and an audio hum from ACPI CPU idling. The latter is rather
> > > interesting actually. At hz=100, it's just a quiet low buzz but at
> > > 1000, it is readily audible on many laptops and annoying. Windows uses
> > > hz=1000 too and has the same problem. I believe it's related to the
> > > capacitors and other devices charging/discharging when clocks are stopped.
> > Can we play music by modulating the value of hz? :)
> I remember some code for the Commodore Pets that you could use to play
> notes on a nearby radio by tweaking some spinning loops. Quite a neat
> trick at the time since there wasn't any sound hardware.
Yeah.. the FCC's finest hour :)
Wilko Bulte wilko at FreeBSD.org
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