On 14/05/2007 21:02, Roger Ivie wrote:
The 11/84 used a CPU board without memory. The
memory was in the slots
between the CPU board and the UNIBUS adapter, communicating with the CPU
board using a private memory interconnect protocol.
It doesn't need a ribbon cable, but PMI uses the CD-interconnect instead of
the QBus, and the memory has to be in a higher slot (physically, that is; ie
a lower-numbered slot) than the CPU. I thought the Unibus adapter went below
the CPU. However, I've only met an 11/84 once, and that was a long time ago,
so I can't be sure about the Unibus adapter placement.
It's been a long time for me, too. You could be right.
--
roger ivie
rivie at