On 09/07/16 05:02, Noel Chiappa wrote: > > The other thing that makes no sense is that the KDJ11-B (M8190) has all that > extra circuitry on it to support PMI, etc - all of which is unused in the > 11/73 application! Why not just plug in a (presumably cheaper) M8192?
In Marketing-land, the VAXstation II RC, with epoxy in the factory-unused slots, makes sense... On 09/07/16 07:34, Pete Turnbull wrote: > > Don't forget the LTC :-) All in all it saves a decent amount of > backplane space, makes field service easier, and follows DEC's attempts > to integrate as much as possible. Otherwise, you'd need an additional > bootstrap card such as an MRV11-D with -B2 boot ROMs, a DLVE1 (DLV11-JE) > for the SLUs, something with an LTC, and termination. That's at least > twice as many slots in a Q-Q backplane and four slots in Q-CD. I think this makes sense in Engineering-land, good point. ;) Anybody know what the most common actually-shipped configuration of the MicroPDP-11/73 were? BA23, M8190, 1 RAM board, RQDX_, and DLV11? --S.
