Mystery QED board

Josh Dersch derschjo at
Tue Feb 14 20:29:54 CST 2017

On 2/14/17 5:55 PM, Noel Chiappa wrote:
> Does anyone know what the QED board (4th image) in this eBay lot:
> is? The large chip looks like a J11 chip. However, the only QED PDP-11 board
> I found mention of online is a high-performance hex board UNIBUS processor,
> the QED 95.
> 	Noel
I was looking at that as well, and I think it is a QED 90 -- there are 
docs on Bitsavers and it seems to match up (there are a few other QED 
boards in that auction that go with it).  Not sure exactly what PDP-11 
system that particular set of boards goes in, the exact configuration 
varies based on what system it's going in...

- Josh

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