Re: sparc 20 workstation's clock
From: Juhan Leemet (juhan_at_logicognosis.com)
Date: 06/12/04
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Date: Sat, 12 Jun 2004 17:33:15 -0200
On Sat, 12 Jun 2004 09:46:16 -0400, cljlk wrote:
> I have Sparc20 with Solaris 2.5 operating system. This workstation was in
> storage for years.
> The time stay at year 1970. I have try to change the time by using a command
> "clock", but failed.
>
> Is the time caused by "battery is too old"? If I have to replace a new
> battery, would
>
> You please provide me some tip, such as where and how.
>
> Thanks in advance.
There was a recent post in comp.sys.sun.hardware (you seem to have missed
that?) which pointed to some general information on NVRAM/clock chips:
"Dave Mitton" <dmitton@comcast.net> wrote:
>"Mike" <mvore@ix.netcom.com> wrote:
>>My Ultra-5 just died from a dead Clock Battery...
>
>Info at: http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html
>
>Using the info there, I was able to buy one at Mouser for about $20 a few
>years ago.
>
>Also, I found if you leave the system powered on, after a day or so, the
>battery may acquire enough charge to boot.
BTW, that was not my experience, that the battery "recovered". I don't
think there is any charging circuitry in there. They are just "embedded"
batteries (like on PC mobos, or digital watches?) that are built into the
NVRAM/clock chip. Someone/somewhere even explained how to do surgery?
I did once have a Sparc1 that seemed to work with a semi-bad battery: it
would reboot with 00:00:...:00 and ff:ff:...:ff field values and time at
the beginning of the epoch (year 1970). I was able to set the (software)
time and the system would run. Jumpstart probably wouldn't work, though.
I bought my replacement NVRAM/clock chip (and other parts) from MemoryX
(www.memoryx.net), but many people have reported buying them from Mouser.
-- Juhan Leemet Logicognosis, Inc.
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