The 4D20 and 4D25 used standard pc-type simms (w/parity),
the 4D/30, 4D/35 and R3K Indigo used an SGI proprietary
simm, identifiable by the large interleave controller chip
on one side of the simm. Did someone already mention that
you can only have 1 bank of 4Mb simms in a system, due to
a prom bug? There is no restriction on the number of other size
simms.
-al-
-acorda(a)1bigred.com
-----Original Message-----
From: Robert F Schaefer [mailto:rschaefe@gcfn.org]
Sent: Wednesday, May 08, 2002 3:24 PM
To: classiccmp(a)classiccmp.org
Subject: Re: IRIX on Personal Iris
On May 7, 20:38, Robert Schaefer wrote:
> > You can upgrade a 4MB SIMM to an 8MB one very easily --
just add the
chips
> > and change one (? IIRC) SMD resistor.
>
> Verrrryyyy interesting. Are these the PI 4D/35 specific
SIMMS you are
refering
to? I do have at least four 4MB SIMMS installed.
I meant Indigo SIMMs, but I *AFAIK* the 4D/35 uses the same SIMMs.
I'll spend a little more time looking into that. I believe
the ealier PIs
take standard parity SIMMs, but I thought the 4D/35s take a
differrent SIMM
from everything else. Be nice if I could bump them up to 8 MB.
Thanks for the info!
--
Pete Peter Turnbull
Bob