22 Jul
2001
22 Jul
'01
10:25 a.m.
OK, my neighbor just dumped a B400X expansion chassis on me (unfortunatly
he's keeping the VAX 4000-100). Is the backplane straight Q-Bus? I'm
wanting to see about stuffing a VAX 3400 boardset in there (that he also
gave me). I'm assuming I can't stick something like a 4000-300 boardset in
it (really don't know as I've not had access to something like that), or do
they plug directly into the Q-Bus?
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
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22 Jul
22 Jul
12:09 p.m.
On 22 Jul, Zane H. Healy wrote:
OK, my neighbor just dumped a B400X expansion chassis
on me
[...] Is the backplane straight Q-Bus?
AFAIK it has straight Q/CD Backplane like
in the BA21x enclosures.
I'm assuming I can't stick something like a
4000-300 boardset in it
No. The 4k200 / KA 660 was the last Q/CD VAX CPU. The later
4k[34567]00
CPUs are using a special connector to the backplane. It caries the
QBus, a DSSI bus and the memory interconnect. You need a BA440 for this
CPUs.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
12:36 p.m.
New subject: X-10 stuff
Bragging does not pay! Especially when one gets caught up in an
inadvertant exaggeration as to years of use!!
Since that interchange of emails, I have run across a rather strange
problem with my X-10 setup and am - to date - stumped for a solution.
What has happened is that the turn-on mode with my RS plug 'n power
seems to be working as programmed (and as it always has) but the
turn-off mode has ceased to function - at least during the times that I
want it to. And when it quits functioning as programmed, it also blocks
usage of the manual push button control.
Let me cite some specifics. The p 'n p unit is programmed to turn on
several lights at about 1930 hours, and then to turn them off at about
2330 and 2345 hours. I am forced to manually switch off the individual
lamps using their own switches as the X-10 switch modules will not
open. However, somewhere around noon of the following day I am able to
press either p 'n p or manual control buttons to operate the X-10 switch
modules. They then appear to remain functional until sometime later in
the evening.
I might also note that in an attempt to circumvent the problem, I
changed house code to no avail.
Anyone have any ideas that I might try to diagnose or cure?
Thanks!
- don
26 Jul
26 Jul
8:02 p.m.
Yup, I've finally got cables for a B400X card and can plug my 4000/100 into
an expansion cabinet. Woo hoo!
So you can plug a 3400 card set into it, or a KA660 (VAX 4000/200) card set
into it. Both work just fine. But you _cannot_ plug a 4000/300 board set
into it.
--Chuck
At 12:25 PM 7/22/01 -0700, you wrote:
OK, my neighbor just dumped a B400X expansion chassis
on me (unfortunatly
he's keeping the VAX 4000-100). Is the backplane straight Q-Bus? I'm
wanting to see about stuffing a VAX 3400 boardset in there (that he also
gave me). I'm assuming I can't stick something like a 4000-300 boardset in
it (really don't know as I've not had access to something like that), or do
they plug directly into the Q-Bus?
8:45 a.m.
At 09:26 AM 7/27/01 -0400, John wrote:
Its a bus issue, in the 4000/300 and beyond DEC went to a dedicated bus for
the CPU and memory that was _not_ Q-Bus. Thus in those machines the
backplane as several slots of this other bus (CPU + memory) and then a
regular Q/CD backplane to the left of those. One big Sbox bulkhead covers
the weird slots (I call it the CPU box)
If you replace the backplane in a B400X then you can use a
4000/{3,4,5,6,7}0{0,5}{,a}
--Chuck
So you can
plug a 3400 card set into it, or a KA660 (VAX 4000/200)
card set into it. Both work just fine. But you _cannot_ plug a 4000/300
board set into it.
Is this a Q-CD issue, a bandwidth issue or what?
8377
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