Mayf,
That cpu chip is a very early model of a 486 mhz. This was before the 486DX2
or the 80486's.
What you are describing there is you need 72 pin SIMM memory. Non EDO. That
was a faster memory by 10ns. The simm memory that was used in those days was
only 70ns. When installing memory in those machines you always had to match
them equally. You had to put TWO of the same chip in other words. You
couldn't mix the 70ns with the 60ns stuff.
You are in luck my rocket friend, I think I have a bunch of that memory in
30 pin, or 72 pin laying around somewhere in a box I should have thrown away
a long time ago, You are welcome to it.
Jonathan
----- Original Message -----
From: "DrMayf" <drmayf@teknett.com>
To: <land-speed@autox.team.net>
Sent: Monday, May 27, 2002 9:38 AM
Subject: Computer Memory Question, NON LSR
> Computer nerds, I have a question for you! I am attempting to revive an
old
> computer with an Intel P24D cpu. Whatever that is...Why, you ask? Well, I
> have an old instrumentation board and software that will work in this
system
> so I want to revivie it. Now the question....it has the capability of
> accepting 2each 72 pin SIMM DRAM modules for memory giving it a total of
> 128 MB. Here is the description of what the memory should be:
>
> "The R407 VESA 486 system board will support 4 DRAM Bank, SIM A and B use
> 30-Pin SIMM sockets x 4, Sim C and SIM D used 72-PIN SIMM sockets x 1. The
> SIM C and SIMM D support 72-PIN Double Side SIMM DRAM when SIM C and SIM D
> set to bank 0 and Bank 1 (Mode 2). "
>
> Most of that I understand, but when I look at the memory table in mode 2
it
> shows 2 each SIMMS at 64 MB each and single sided. I search ebay and find
> many listed as EDO memory, but I think this was before EDO memory came
out.
> So what am I looking for? I'd think it would be really cheap?
>
> Any assistance would be really great! TIA!
>
> mayf, the really, really ignorant red necked desert rat in Pahrump...
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