MEM11 update

[Guy Sotomayor]

> On Feb 8, 2016, at 2:04 PM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
> 
> 
> 
>> From: Ethan Dicks
> 
>> I'm starting to get sorry I sold off my surplus NS8641s from Software
>> Results 20 years ago. To be fair, I did get over $4 each for them, so at the
>> time, it was a good deal for me (ISTR retail was $7.50 even then, so I
>> got a good spread on the price).
>> I do have some left, but handfuls, not armloads.
> 
> NS8641's are still available. I got a bunch from a guy in Hong Kong for
> US$1.50 each - considering the source, I built a test card to make sure they
> met specs, and they do, so I'm pretty sure they aren't counterfeits. :-)
> 
> When I was worried he couldn't find enough, I checked with a supplier (4 Star
> Electronics, I think) and they had like 50K available, and quoted me a price
> in about the same region, so I don't think UNIBUS transceivers actually are a
> problem, at least, not at the moment.

That’s good to know although I use a number of different UNIBUS interface
parts depending upon the signal (input only, output only or bi-directional).
But NS8641’s are the most numerous.

TTFN - Guy