[vcf-midatlantic] IBM FSU Static RAM Board...for S-100?!

william degnan billdegnan at gmail.com
Thu Jan 21 10:17:32 EST 2016

Here is a photo of an early IBM bus RAM card, same FSU RAM.  This is a 256K
RAM card for the IBM PC.


On Thu, Jan 21, 2016 at 10:02 AM, Systems Glitch via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

> This has to be one of the most unexpected S-100 boards I've acquired. The
> seller says this was created due to the need for denser RAM boards for
> IMSAI 8080's at IBM's Advanced Systems Development Lab in Los Gatos,
> California. Apparently FSU RAM was the densest static RAM available at the
> time, and of course they had access to it, being IBMers. Extra boards were
> produced for engineers with S-100 machines at home. I wrote up what I know
> about the boards here:
> http://www.glitchwrks.com/2016/01/20/fsu-ram
> Fortunately they came with a copy of the 3-page manual and a (very faded)
> blueprint copy of the schematic. I've digitized both and made them
> available. I've tested one of the boards so far, which works fine with my
> IMSAI 8080 and a 2 MHz 8080 CPU board. I'd be interested to hear if anyone
> else knows anything about these, or has one, or has spare FSU RAM modules
> they'd be interested in parting with.
> Thanks,
> Jonathan

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