[vcf-midatlantic] PDP 11/40 update

william degnan billdegnan at gmail.com
Tue May 24 09:41:49 EDT 2016

I had written about how to expand the backplanes of an 11/40.  Basically I
am upgrading the system I have had for a while.  I completed the work and I
now have the system running with core memory rather than MOS memory.  Just
seems more authentic that way.

I learned a ton about UNIBUS in the past two days if anyone wants to talk
shop about them.  I hope soon to boot RT11, still working on that, but
closer now...closer...

I got a lot of help, could not have done it without CCTECH DEC Heads.  Very


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