7 Jun
2005
7 Jun
'05
12:11 a.m.
On Jun 6 2005, 22:46, Allison wrote:
Note there were differenet backplanes used in the BA23
those
that were compatable with uVAX-1, those that were uVAX-II
and the microPDP-11. Use the wrong one with the desired CPU
and bad results happen.
I've never seen more than one type of backplane in a BA23, and only one
is listed in my manuals: H9278-A. It's compatible with all of
microPDP-11, uVAX-I and uVAX-II without so much as a jumper change.
Are you thinking of something else?
--
Pete Peter Turnbull
Network Manager
University of York
7 Jun
7 Jun
1:03 a.m.
On 6/7/05, Pete Turnbull <pete at dunnington.u-net.com> wrote:
On Jun 6 2005, 22:46, Allison wrote:
Agreed... One of the MicroVAX-IIs I own was originally shipped from
DEC in 1984 as a uVAX-I, then upgraded (for $17,000!) and I don't
remember a backplane swap being part of the deal.
Every BA-23 I have seen is Q22-CD for 3 slots, then Q22-serpentine for
the remaining slots.
Is there another kind?
-ethan
Note there were differenet backplanes used in the
BA23 those
that were compatable with uVAX-1, those that were uVAX-II
and the microPDP-11. Use the wrong one with the desired CPU
and bad results happen.
I've never seen more than one type of backplane in a BA23, and only one
is listed in my manuals: H9278-A. It's compatible with all of
microPDP-11, uVAX-I and uVAX-II without so much as a jumper change.
Are you thinking of something else?
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