7 Jul
2015
7 Jul
'15
3:06 p.m.
On 2015-07-07 23:49, tony duell wrote:
Perhaps SDI is a typo for SBI, as in the 11/780?
Good point. SBI would make much more since in there. But this also
becomes a question of what kind of buses are we interested in. The I/O
buses, or the CPU buses, or something else? Unibus was always just an
I/O bus for the VAX. Should we then also mention Massbus? How about CI?
And on some of the 8000 machines, the CPU sat on a bus called NMI, on
which you then had the VAXBI adapters.
I honestly don't have a good idea of what defines a "large" VAX. Buses
feels unsuitable. Power connector maybe? :-)
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
I'd say any VAX with a UNIBUS, SDI, BI or XMI bus, at least, should qualify. I think
that would include all the
7xx, 6xxx, 8xxx, and 7xxx/10000 machines. I don't really know what was in a 9000...
9000 is also XMI. Several of them, if I remember right. SDI on the other
hand is just a disk interface. I don't think it makes sense to include