Re: [PATCH 17/17] Add timekeeping documentation

[Zachary Amsden]

On 06/15/2010 10:27 AM, Randy Dunlap wrote:
> On Mon, 14 Jun 2010 21:34:19 -1000 Zachary Amsden wrote:
>
>    
> > Basic informational document about x86 timekeeping and how KVM
> > is affected.
> >      
> Nice job/information.  Thanks.
>
> Just some typos etc. inline below.
>    

Thanks for all the detailed feedback!  I'll include it all in the next 
revision.  I only have one response:
> > + low, the count is halted.  If the output is low when the gate is lowered, the
> > + output automatically goes high (this only affects timer 2).
> > +
> > +Mode 3: Square Wave.   This generates a sine wave.  The count determines the
> >      
> a sine wave is a square wave???
>    

Actually, yes.  The hardware output from timer 2 output goes through a 
low pass filter which effectively smooths the square wave to a sine to 
make the PC speaker sound somewhat less annoying.  I didn't have room to 
depict this in the schematic.  Of course, the counter output isn't 
directly a sine wave, and the LPF may not be all that effective, but it 
was the intent.

Zach
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