[SunRescue] SIMMs [was our SS2 help]
Sheldon T. Hall
shall1 at columbus.rr.com
Sat Mar 11 09:42:48 CST 2000
On Friday, March 10, 2000 3:33 PM, James Lockwood wrote:
> One additional point: the SGI Onyx and Challenge L/XL do not take
> "conventional" 72-pin FPM parity SIMMs. They require special SGI SIMMs
> considerable expense.
> Same for most RS/6k's, though there are exceptions. Some can take
> IBM-branded PS/2 SIMMs.
IIRC, the main diffo with "PS/2" SIMMS and normal PeeCee SIMMs was that the
PS/2 variety told the system what the SIMMs were via some special resistors
on otherwise-unused pins.
I saw an article about how it worked, once, but I can't remember if the
SIMM modification instructions in the article were about modifying PC simms
for a PS/2, or vice-versa. Back when RAM was $60 a meg, folks would try
anything to avoid buying it ....
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