Dec boards- what are they?

[Paul Koning]

>>>>> "Eric" == Eric Smith <eric at brouhaha.com> writes:

 Eric> Paul wrote:
 >> Apart from the obvious "if it's hex it must be Unibus" there isn't
 >> a surefire way to tell things apart.

 Eric> DEC made *many* hex modules that are not Unibus.  There are hex
 Eric> Omnibus modules for the 8/a, and plenty of hex non-Unibus
 Eric> modules in the KL10 (PDP-10) and some early VAXen.  There were
 Eric> also "extended hex" modules used in the KS10 and other early
 Eric> VAXen.

Sure.  I should have been more precise.  The original question was:
"how can I tell by inspection whether a board is Unibus, Q18, or Q22?"

Given just those three choices, what I said is accurate -- hex can't
be Qnn so it must be Unibus by process of elimination.

   paul