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

Dave McGuire mcguire at neurotica.com
Thu Jan 21 15:59:17 EST 2016

On 01/21/2016 10:02 AM, Systems Glitch via vcf-midatlantic 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. 

  I'm quite shocked to see IBM built anything at all for the S-100 bus.
 How bizarre.  That's a keeper.


Dave McGuire, AK4HZ
New Kensington, PA

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