I had a 622/i, an 18-bit version, the 620 with the 6-bit slices all
used. It died the horrible death of wirewrap decay. I pitched it and the
mauals (gulp) back in 86 or so, what a horrible mistake.
==
foo..
The 620 is an unusual architecture in that it was available in both
16 and 18 bit versions.
I was able to pick up an 18 bit version a few years ago.
Anything more about the ND 812 that you saw at a surplus place last
year?