[rescue] Sun SparcStation 20

Éric Bertrand eric.ricomac at gmail.com
Mon Jun 20 20:43:02 CDT 2016

Thanks Richard for your follow up. I will clean the dimm slot with
electronic 99% alcool because and will retest ram again.

Contact clean contain petrol solvent and it not the best for cleaning
mainboard sockets. It's more recommended for cleaning  connectors.

Yesterday was a hot evening and this not helped me to diagnose my
SPARCstation. I'll do a follow up here after cleaning.

But my question about memory slot configuration with openboot remain
unanswered. It is possible to setup dimm 01to be the first simm to align
the ram?
Le 2016-06-20 9:32 PM, "Richard" <ejb at trick-1.net> a C)crit :

> Hi Eric
> Sweet machine.
> Might be age related build up of gunk/oxidation. Suggest that you clean
> the DIMM slot and the pins on the DIMM with some spray electrical
> cleaner (no idea if thats safe or recommended but it worked for me) and
> then replace. I had a similar issue which I posted about only a week or
> so back. Machine is working a treat now and the module in question now
> passes.
> Then again it could be bad DIMMM in which case replacement is probably
> on the cards.
> Richard
> On Tue, 21 Jun 2016, at 09:02 AM, C     ric Bertrand wrote:
> > Hi,
> >
> > I got a Sparcstation 20 with 256MB and ZX frame buffer. It booted fairly
> > well
> > Debian weezy but I'm looking for a up to date OS to put on it. OpenBSD
> > support
> > Sparc 32 in the last release and I started to install it. I got some
> > memory
> > errors and finally desktop is not loading at all. I had to put
> > diag-switch
> > to
> > true and start self test. J0201 have a defect dimm. Replace, same thing.
> > Switch the j0201 on j0203 to isolate j0201 socket. J0203 is ok. Replace
> > the
> > dimm at his place, start the machine and got black screen and compose on.
> >
> > The service manuel tells me that the j0201 dimm is bad and the
> > diag-switch
> > test-all too, I think the dimm
> > socket is bad because the socket seem cracked. This could be dry plastic
> > issue
> > due to aging.
> >
> > Anyway, it is a possibility to align ram to dimm 01 instead of dimm 00?
> > _______________________________________________
> > rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
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