9 Mar
2011
9 Mar
'11
3:24 p.m.
I fired up my Sun Ultra 5 the other day to install a bigger SCSI HD and noticed its NVRAM
is dead (FF for ethernet address, serial number changes each reboot).
Anybody know a source of cheap replacement NVRAM chips (can they be reworked like a Dallas
RTC chip?), and how do you reprogram them?
9 Mar
9 Mar
9:01 p.m.
Yes they can be reworked, however, the battery will eventually leak :( and
screw up your board. The crystal is in the top with the battery so you
have to be careful.
On 3/9/11 3:24 PM, "Teo Zenios" <teoz at neo.rr.com> wrote:
I fired up my Sun Ultra 5 the other day to install a
bigger SCSI HD and
noticed its NVRAM is dead (FF for ethernet address, serial number changes each
reboot).
Anybody know a source of cheap replacement NVRAM chips (can they be reworked
like a Dallas RTC chip?), and how do you reprogram them?
10 Mar
10 Mar
11:44 a.m.
On Wed, 9 Mar 2011 18:24:24 -0500
"Teo Zenios" <teoz at neo.rr.com> wrote:
(can they be reworked like a Dallas RTC chip?),
Yes. I've done this several times.
and how do you reprogram them?
First match of
google search "sun nvram":
http://www.squirrel.com/sun-nvram-hostid.faq.html
--
\end{Jochen}
\ref{http://www.unixag-kl.fh-kl.de/~jkunz/}
11 Mar
11 Mar
3:21 p.m.
If you don't mind doing a bit of physical hacking, you could try this (has pics)
http://www.vdheijden-messerli.net/sgistuff/photos/2009.11.24-sun-nvram/
14 Mar
14 Mar
5:12 p.m.
Ok, I hacked the old chip and installed a 3V CR2032 coin type battery on
top.
My chip was a M48T59-70PCI by ST (which is what should have been there for a
SS5)
There was a sticker on the top (system id???) with 80 f4 61 b0 on it.
Assuming I didn't screw the chip up and installed it correctly, how do I
reprogram it? What I seen on the net is too generic.
Where do I find a serial number or network ID on the physical unit?
----- Original Message -----
From: "joe lobocki" <jlobocki at gmail.com>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
Sent: Friday, March 11, 2011 7:21 PM
Subject: Re: SUN Ultra 5 NVRAM
If you don't mind doing a bit of physical hacking,
you could try this (has
pics)
http://www.vdheijden-messerli.net/sgistuff/photos/2009.11.24-sun-nvram/
5348
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4 comments
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participants (4)
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geoffr＠zipcon.net -
jkunz＠unixag-kl.fh-kl.de -
jlobocki＠gmail.com -
teoz＠neo.rr.com