Sensors

[Oren Beck]

>From: "Brian Densmore" <DensmoreB at ctbsonline.com>
>To: "Jonathan Hutchins" <hutchins at tarcanfel.org>
>CC: <kclug at kclug.org>
>Subject: RE: Sensors
>Date: Wed, 21 Jan 2004 08:29:42 -0600
> > -----Original Message-----
> > From: Jonathan Hutchins
> >
> >
> > On Tuesday 20 January 2004 04:53 pm, Brian Densmore wrote:
> > > > -----Original Message-----
> > > > From: Jonathan Hutchins
>...
> > > > temp3:    +255.4°C  (limit =  +80°C, hysteresis =  +75°C)
> > ...
> > > > I think the temps are way off - I really doubt that I have
> > > > something running at 255 degrees...
> >
> > > Interesting temperature, 255, as in 2^8-1. I'd almost be tempted to
> > > believe that temp3 isn't detecting anything and rather
> > > than indicating a 0 temperature it is indicating an 'infinite'
> > > temperature. The other two temps look realistic for CPU and case
> > > temps respectively. You wouldn't happen to know what the third temp
> > > is supposed to measure?
> >
> > Come to think of it, I have CPU and MB sensors, but I don't
> > think there is a
> > third sensor.  Good call.  Where's the .4 come from though?
>That's a complicated question that would be hard to answer without
>a lecture in binary logic, digital electronics, and binary to decimal
>conversion. That said, I suspect the .4 is just a random fluctuation
>specific to your specific MB and could very well vary over time in your
>MB and between yours and other MBs of the same series. If I am correct
>and the circuit is converting temperature from an analog or decimal
>representation and storing it as a binary. It is because not all decimals
>can be represented 'exactly' in binary logic. For example try to represent
>1/37 using base 2.
>
><disclaimer>
>Of course I could be remembering my college coursework in electronics
>and computer engineering wrong. It's been such a loooooooooong time and
>I never get much chance to use it. ;)
></disclaimer>
>
>Brian

While concurring on the absent sensing device as explaining the reading 
another query .

Does the mobo doc list sensor locations and a/d addressability ?
LongShot but one shaggydog bug that devoured several roadtrips to Gehenna- 
Er - Richmond MO
was a BIOS prompt for SECOND cpu fan  that was not on the SINGLE cpu mobo !

Further details may lurk in moldering doc pile back of storage barn table . 
Suffice to say reflash BIOS
banished the bug and begat a mantra of " check the BIOS " for improbable 
settings .

Oren

" Concept- Start an ISP targeting the aol users  with the intro CD bearing a 
small Linux LiveDemo that's installable and stable "

_________________________________________________________________
High-speed users—be more efficient online with the new MSN Premium Internet 
Software. http://join.msn.com/?pgmarket=en-us&page=byoa/prem&ST=1