[Info-vax] Request for AlphaServer 1000A SIMM/SIMMS

[urbancamo]

On Jul 7, 12:35 pm, Hans Vlems <hvl... at freenet.de> wrote:
> On 6 jul, 10:39, Kari Uusimäki <uusim... at exdecWITHOUTTHISfinland.org>
> wrote:
>
>
>
> > On 6.7.2011 9:09, Bart.Z... at gmail.com wrote:
>
> > > On Jul 5, 8:43 pm, urbancamo<m... at wickensonline.co.uk>  wrote:
> > >> Hi,
>
> > >> I recently had a SIMM go bad in my AlphaServer 1000A and needed to
> > >> pull the group of four to keep it running. Does anyone out there have
> > >> any spares? I'm based in the UK.
>
> > >> The part number I'm looking for is: 50-21276-01-02, it's a 8MB x 36
> > >> SIMM 60ns EDO FPM, also listed as being for an AlphaServer 200 4/233.
>
> > >> Alternatively, a set of four SIMMs in either of the following formats
> > >> would be great:
>
> > >> 54-21246-BA 1 x 8MB SIMM
> > >> 54-23170-BA 1 x 16MB SIMM
> > >> 54-21277-BA 1 x 32MB SIMM
> > >> 54-24123-AA 1 x 64MB SIMM
>
> > >> All the documentation for the AS1000A says that the SIMMs should be
> > >> added in groups of five, one for parity correction, but this server
> > >> doesn't have any of the fifth SIMMs installed, so I'm assuming they
> > >> are optional.
>
> > >> Many thanks, Mark.
>
> > > AFAIK, the AS 1000A 4/xxx uses groups of five SIMMs, and the 1000A 5/
> > > xxx uses groups of four.
>
> > > Bart
>
> > Quite correct. The fifth SIMM on the EV4  AS1000(A)'s is the ECC SIMM.
>
> > Kari- Tekst uit oorspronkelijk bericht niet weergeven -
>
> > - Tekst uit oorspronkelijk bericht weergeven -
>
> Interesting!  The OP wrote that he has an Alpha Server 1000A 5/300
> with 5 memory banks,
> each bank has 4 slots.
> I just saw the output of >>> SHOW CONFIG and the machine
> identification is correct.
> I don't have an AlphaServer 1000(A) with 5 memory banks on the main
> board, never tried to
> boot one with the 5th bank empty (the one that holds the ECC simm(s)).
> Apparently that is possible.
> Mark could you post a photo of the main board?
> Hans

Hans,

My motherboard memory layout looks just like this:
http://www.wickensonline.co.uk/images/as1000a-memory.png

I have four SIMMS in Bank 3 (it appears this bank needs to be
populated first), nothing in any of the ECC slots at the bottom.

Regards, Mark.