(Hah...Just in time to join in when vax-ownership is asked!)
Hello folks,
my very first DEC computer has arrived - a VAXstation II/GPX in a BA123 enclosure from Jos
Dreesen, which I just brought home from Switzerland last weekend with the help of my
parents. Thanks again!
The original configuration of the system was:
Slot AB CD
1 ----KA630-A CPU----
2 ----some memory----
3 ----more memory----
4 -DELQA- ..empty..
5 -RQDX3- ..empty..
6 ----QDSS 4-plane---
7 ----QDSS 4-plane---
8 ----QDSS base------
9-12 .......empty.......
13 ..empty.. -RQ Dist-
As to mass storage, there is a RX33 floppy drive in the vertical bay and the system has
one HDD frontpanel insert installed. It came with a dead (possibly revivable) RD53, but a
fellow collector also gave me a supposedly functional one.
I assume the backplane is the original 4x Q/CD, 8x Q/Q thing that belongs in a BA123 as
indicated by the lettering in the cardcage. To my understanding, this means the grant
chain was broken in slot 5 (after the RQDX3) because there's no board in its CD half.
I rearranged the cards so that the RQDX3 now resides in 4AB, the QDSS base board is in 5AD
and the DELQA in 8CD (I hope I did get that serpentine configuration right).
After correcting an issue with the cardcage fan (which turned out to be just the connector
inside the fan tray plugged in backwards!), I hooked up a crufty old laptop as a terminal
but didn't get any output as the selftest always got stuck at "A", which
corresponds to a keyboard/pointing device problem. This is supposedly normal since I have
the VCB02 video option installed but nothing plugged into it. (I have yet to get myself a
DEC keyboard, mouse and the BC18Z splitter box cable; at the same time, I'll be
looking for a TK drive with controller and any other stuff I can cram in there.)
I can get into console I/O mode (chevron prompt) by sending a Break from the terminal but
it's a bit annoying that I don't get to see the CPU version banner and the test
countdown that way. Shorting pins 8 and 9 on the serial console connector didn't make
any difference either (I have read it will cause some VAXstations to use that as console
instead of the graphics display) - bit of a bummer considering that any humble
SPARCstation who realizes they haven't got a keyboard attached will start using the
serial console.
I have read the KA630 User's Guide, especially the meaning of the BBU RAM contents,
and it doesn't look as if there is anything short of hacking the POST code and burning
a new PROM that could be done about it, but if I have overlooked something, I'm all
ears. Other than that, I'm off now looking for a MOP server and some netbootable OS
image, perhaps NetBSD, for a start...
Yours sincerely
Arno Kletzander, DEC neophyte ;)
--
Arno Kletzander
Stud. Hilfskraft Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
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