TU56 DECtape on Q-bus machine possible?

From: Christopher R. Zach <cz_at_bronze.lcs.mit.edu>
Date: Tue Mar 27 16:32:58 2001

Sure. Get a Qunivertor.

Problem is most Qunivertors run in a straight translation mode, and don't do
22 bit DMA mapping. In addition, the old Dectape driver would probably need
to be hacked to support the 22 bit DMA (yes the TU56 did DMA. Wow.)

Question: Is it possible to take the Unibus map from an 11/84 and use it as
a super-cool Qunivertor? I'm thinking run Q bus devices on the left of the map,
then run Unibus devices on the right. Or does the 11/84 card interface to the
memory using the PMI interface, and would be unable to snoop along with true Q
bus cards?

Chris
Received on Tue Mar 27 2001 - 16:32:58 BST