3-series differences

[Matt Landau]

cg-atla.agfa.com!weber at cs.utexas.edu writes:
>I'm not sure about a 3/75, but I think its a single board workstation (as
>indicated by its two digit (X/75) suffix) based on a Sun 3/100 CPU.
>Basically a 3/50 but with the faster 68020 from the 3/100 series.

The 3/75 was the low-end diskless machine before the 3/50 and 3/60 were
built.  It's basically a desktop 3/160 with only 2 VMES slot (as opposed
to the 3/50 and 3/60, which have no VME slots), one of which is used for
the CPU board.