VAX9000 unearthed
Chris Zach
cz at alembic.crystel.com
Fri Feb 18 15:30:00 CST 2022
> XMI already existed as the system bus for the VAX 6000 series machines.
> I/O on the VAX 6000's was via an XMI-to-BI bridge. I don't remember
> the exact performance specs on XMI, but it was wider and faster than BI.
I thought XMI was only supposed to be a CPU/memory bus, with IO being
done by multiple VaxBI busses. That's what we had on the 6000 at the
computer Society: 2 CPUs, memory, and two VaxBi with a SCSI disk
controller on each.
I think it also had serial connections via terminal servers because the
ceiling in the computer room collapsed shortly after I started working
there from all the RS232 cables piled up there. Landed right on the
SparcStation 20 and "crashed" our WAIS/Gopher server.
Learn something new every day.
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