Old Sun diags questions (4/300 and 3/200)

Scott Quinn compoobah at valleyimplants.com
Mon Nov 12 00:18:30 CST 2007

Dave McGuire writes:

> On Nov 10, 2007, at 1:19 PM, Scott Quinn wrote:
> > Couple of questions on old Sun machines (well, parts).
> >
> > On a Sun 4300 CPU board, I'm getting the
> > "EEPROM Write-Write-Read-Read test
> > error PA=0xF2000000 VA=0X00FF8000 Exp=0x0000005a Obs=0x00000000
> > (looping)"
> > error. Looking on the Web and Usenet seems to show that this has
> > happened a couple of times, with some reference to possibly being
> > the NVRAM (although the most comprehensive posing set was in
> > German :(). This seems a bit odd, though - on my other Suns it
> > calls the NVRAM the NVRAM, so I'm wondering if this is something 
> else.
>    It's just a terminological difference.  Most of those machines (if
> I recall correctly) used 2816 NVRAM chips, which are also correctly
> referred to as EEPROMs.

Oh, so the Mostek unit isn't what this is talking about. Hmm- have to 
go over the board again.

I saw the Mostek and assumed that it was the same as the 4c/m/u NVRAM 
setup .

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