Which PDP?

[Eric Smith]

Curt wrote:
> You should also consider if you want a Unibus system (even numbered) or
> a Qbus system (odd numbered) or a hybrid like an 11/83.. though thats an
> 80's system, hmmmmm....

The 11/83 is a Qbus system.  There aren't any "hybrid" systems.

You were perhaps thinking of the 11/84 and 11/94 Unibus systems, which use
the same CPU modules as the 11/83 and 11/93 Qbus systems.  But when those
modules are used in the 11/84 and 11/94 backplane, there is *NOT* a Qbus
present.  There is a somewhat-Qbus-like bus, but it is not compatible with
Qbus either electrically or in terms of bus protocol.

Anyhow, none of those meet the "70's design" criteria Ian specified.

Eric