[rescue] Replacement NVRAM/clock for IPX, success + question

[Steve Rikli]

> Related question: is it possible to recover the original hostid/MAC from
> the barcode on the original chip?

In theory, yes:

http://mail-index.netbsd.org/port-sparc/2001/09/04/0002.html

YMMV on the quality of the printing on the NVRAM chip, of course, but
I was able to use these notes to come up with the data for my Classic.
At least, I think I got it right.

Not that it matters much, as you say, since making something up is
fine; but "getting it right" did make me feel better.  :-)


On Wed, Sep 23, 2015 at 06:06:24PM +0200, Romain Dolbeau wrote:
> Hello,
> 
> If anyone is looking for a replacement NVRAM for a sun4c (in my case, a
> recently salvaged IPX), I can confirm a working replacement is the Dallas
> DS1642-85+ that I recently bought from mouser (sorry, french site):
> 
> http://www.mouser.fr/Search/ProductDetail.aspx?R=DS1642-85%2bvirtualkey66880000virtualkey700-DS1642-85%2b
> 
> They are quite expensive but they work, even though the (otherwise awesome
> ! thanks !) Sun NVRAM/hostid FAQ claims the DS1642 doesn't work perfectly
> in an IPX. As far as I can tell, it posts fine and does everything it is
> supposed to. I can even stop the clock as per the instructions in the FAQ,
> so the battery might last a bit longer.
> 
> There is also a -100+ available which I suppose would be fine, but it was
> more expensive for small quantities at the time I ordered the chip.
> 
> Related question: is it possible to recover the original hostid/MAC from
> the barcode on the original chip? No actual need, just curious. 'c0ffee' is
> fine, unless you have more than one old Sun on the same network :-)