IRIX on Personal Iris

From: Robert F Schaefer <rschaefe_at_gcfn.org>
Date: Thu May 9 08:50:54 2002

> On 2002.05.09 09:06 Pete Turnbull wrote:
>
>> There's a bug in the ASIC (according to SGI) on the 64-pin
>> proprietary SIMMs which means you can use any number of 2MB
>> or 8MB SIMMs but only one set of 4MB SIMMs on a 4D/35 or
>> R3000 Indigo.
> So, if I "upgarde" the 4MB SIMMs to 8MB SIMMs, I can put in more than
> one bank of "upgraded" SIMMs? Or is this bug speciffic to the 4MB SIMM
> ASIC and the 2MB and 8MB SIMM ASICs are different?

The 2 meg SIMMS are full o' chips, the 4 meg SIMMS are only half-populated,
fill it out to make an 8 meg SIMM. It would appear that the ASIC is the
same on the 4 meg and 8 meg SIMM. I would like to know if the ASIC is the
same on the 2 meg SIMM. I have a number of them, and I would rather
unsolder the old RAM chips and replace them than screw with the only set of
working 4 meg SIMMs I have.

> --
>
>
>
> tsch??,
> Jochen

Bob
Received on Thu May 09 2002 - 08:50:54 BST