[parisc-linux] Neat hardware on 712.

[parisc-linux] Neat hardware on 712.

[Steve Shack]

Good day puffins,
    Last night  Philipp and myself were playing around with the 712's
discusing how to support the powerswitch gracefully when we realized
that there was a cable going to the front of the case; Upon further
inspection it is a thermal sensor. Some duscussion followed as to how
this might be interfaced to the system. As it turns out it works as the
following. When the circuit is completed and the sensor is too hot
another fan in the back of the 712's power supply turns on. We've yet to
determine if there is anything else going on in the system or if there
is any way this information is reported back to the os/running system at
all but we'll investigate further. Philipp has suspicions about the
large number of wires coming on the power header. That perhaps some of
those wires are used for signaling. Myself I have a feeling that it
might be a combination of that and the two smaller wires coming from the
psu.


That's all for now.
Steve

Re: [parisc-linux] Neat hardware on 712.

[willy]

On Wed, Mar 08, 2000 at 09:44:32PM -0800, Steve Shack wrote:
> Good day puffins,
> following. When the circuit is completed and the sensor is too hot
> another fan in the back of the 712's power supply turns on. We've yet to
> determine if there is anything else going on in the system or if there
> is any way this information is reported back to the os/running system at
> all but we'll investigate further. Philipp has suspicions about the

hmm, i wonder if it uses the i2c bus like lm_sensors...

Re: [parisc-linux] Neat hardware on 712.

[Rajiv Dighe]

Talking of cool stuff..atleast I found this to be cool coming from wintel architecture, but while I was helping a friend load HP/UX 10.20 on a stack of 712s he has acquired, we came across a machine that had bad memory simm in it. when machine booted, it showed image of mainboard on the screen with simm slot that containing bad simm highlighted..sure beats the heck out of trying to listen to beeps on the speaker to find out what's wrong :)

--Rajiv
----- Original Message ----- 
From: "Steve Shack" <sshack@cln.etc.bc.ca>
To: <parisc-linux@thepuffingroup.com>
Sent: Thursday, March 09, 2000 12:44 AM
Subject: [parisc-linux] Neat hardware on 712.


> Good day puffins,
>     Last night  Philipp and myself were playing around with the 712's
> discusing how to support the powerswitch gracefully when we realized
> that there was a cable going to the front of the case; Upon further
> inspection it is a thermal sensor. Some duscussion followed as to how
> this might be interfaced to the system. As it turns out it works as the
> following. When the circuit is completed and the sensor is too hot
> another fan in the back of the 712's power supply turns on. We've yet to
> determine if there is anything else going on in the system or if there
> is any way this information is reported back to the os/running system at
> all but we'll investigate further. Philipp has suspicions about the
> large number of wires coming on the power header. That perhaps some of
> those wires are used for signaling. Myself I have a feeling that it
> might be a combination of that and the two smaller wires coming from the
> psu.
> 
> 
> That's all for now.
> Steve
> 
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Re: [parisc-linux] Neat hardware on 712.

[rob fleming]

Just another thing to think about.  The 712 has some other features I posted a monitor issue under 712/60 a few days ago listing a problem and solution.  I also found that though most think the light on the case next to the power button is there for looks is has a warning function similar to what was posted about the monitor and the missing card.   I have found that if and OS is not on the disk you will get a blinking light messaging
something wrong.   Just thought I would throw that out there.

Rob

--
   ___  ___       __         |  Name  : Robert Fleming
  /  / /  /____  (__)__  ___ | E-mail : rfleming@cc.weber.edu
 /  /_/  /  _  \/  /\  \/  / |    day : Solaris, HP-UX, Linux, WinNT, Novell
 \___,__/__//__/__/ /__/\__\ |  night : FreeBSD-Current, OpenLinux, Mandrake