I have three AlphaServer 2100 systems in storage in the UK
(Oxfordshire). The storage, however, is due to be demolished (soon, but
no fixed date).
I won't have room to store these three systems, so if anyone would be
interested in offering them a home, then please get in touch!
I can probably get some pictures in the next day or two.
These systems were SMP Alphas and could sport as many as 4 CPUs. I'm not
sure of the configuration of these systems but I can probably find that
They have not been run since ~2003 so they may be in need of some TLC.
OTOH they are not rusted to death so you have a chance of getting them
back to life.
Just so you know what you might be dealing with these systems are about:
700mm H x 430mm W x 810mm L.
I can't find the weight in any of my references right now but they are
very heavy. Three people can move them up a slight slope with some
effort but you would not successfully lift it into a car (assuming that
it would fit). I'm planning to dismantle them to move them (i.e. remove
PSU/PSUs etc. until they are light enough to move). A tail-lift would
probably be the sane way to go (and is, indeed, how they got to their
I'm hoping that someone can step forward and offer one or more of these
machines a new home. Please contact me off-list (once you're sure you
understand what you are getting into :-)).
antonio at acarlini.com
The recent discussion on BSC protocol prompted me to dig out my Microvax 3100
with DSH32 synchronous serial interface. It had been idle in storage for
several years and it wouldn't power up, only giving a brief flash on the
diagnostic LEDs and a quick twitch of the fans. There was a slight smell, like
the stale air that comes out of a deflating tyre.
I took out the H7821 power supply and found that five identical brown 1800uF 25V
electrolytic capacitors on the output side had leaked.
The SCSI disk enclosure where the machine's system disk lives required several
power cycles to get it to run at all and it died as soon as the disk tried to
spin up. It turned out to also contain a H7821 power supply which had a
similar issue with the same five brown capacitors, although not as extensive
as in the main unit.
I found a second disk enclosure which had seen little use and grabbed the power
supply out of that to put in the MicroVAX. It worked well enough to test with
but there was a ring of goo around the bottom of one of the brown capacitors
which was worst affected in the other units. Time to order a batch of
replacement capacitors and figure out what else has been damaged. While it is
not the worst I have seen, access to these power supplies for repairs is quite
difficult and it is really difficult to debug them safely while they are
running with the cover off :-(
If anyone has anything with H7821 power supplies in them, I suggest checking
on these capacitors. If anything with these power supplies is in storage, I
suggest ensuring it is stored the normal way up as this should limit the
ability of the goo to escape and spread around the power supply.
And there I was thought I was being safe enough by removing the nicad battery
packs some years ago...
I?ve been given a couple of RLX blade server chassis loaded with blades (one with Transmeta Crusoe cpu?s, and one with Pentium III cpu?s). I hope you?ll allow me to count these as ?vintage? because of their interesting origin: the Pentium III loaded chassis was part of a 768 node computer cluster at the Sanger Institute in the UK, and was used in the last stretch of the DNA sequencing computations for the Human Genome Project.
I?d like to build a compute cluster out of these, but I don?t have the rpm?s they supplied to customize Linux for their blades. Ideally, I?d hope to find a copy of their ?Control Tower? blade management software, and their customized Linux installation images, but just the bare rpm?s would do for now. From the RLX platform guide, I?d hope to find:
This e-mail (including any attachments) may contain privileged, confidential, proprietary, private, copyrighted, or other legally protected information. The information is intended to be for the use of the individual or entity designated above. If you are not the intended recipient (even if the e-mail address above is yours), please notify us by return e-mail immediately, and delete the message and any attachments. Any disclosure, reproduction, distribution or other use of this message or any attachments by an individual or entity other than the intended recipient is prohibited.
> From: Mattis Lind
> Thanks Noel for sorting this out.
Eh, de nada. But thank you.
>> I wonder if the ucode in the two versions is identical? The uROM chip
>> numbers should give it, (if they are the same on both versions, albeit
>> in different locations on the board), but I have yet to check. Does
>> anyone happen to know?
OK, so the situation here is pretty complicated. To start with / make things
worse, that CPU uses lots of PROMs. Lots and lots and lots and lots of PROMs.
For the data paths board (M7260), both major versions appear to contain the
same PROMs (going by the DEC part numbers), but the chip location (Exx)
numbers are all different.
For the control board (M7261), the C, E ('early' version) and F ('late'
version) etch revisions each contain mostly the same PROMs, but apparently
with slight differences between the sets of PROMs in each (as reflected in
different DEC part numbers). For details see:
to which I have just added all the gory details.
As to getting the contents of all of them dumped in machine-readable form -
>> on the earlier version (prints for that version are in the GT40 prints
It turns out that I have hard-copy prints for the "C" etch revision of the
M7261, which do not yet appear to be online; the GT40 prints have the "E"
I will scan the pages for that revision of the board, and put them up 'soon'.
(I'm not doing the whole print set, it's about 1" thick, and most of them are
for other things anyway, like MM11-L memory, etc.)
In item https://www.ebay.com/itm/265045229011 I am curious as to whether the
gold islands on the top-side are functional test-points giving electrical
access to the underside pins? Was there a clip designed to attach to the
top-side of these chips for use in circuit analysis? Was this design unique
to Russian manufacture (I don't recall ever seeing this design previously)?
I am looking for a version of the VAXSET Software Engineering Tools to
run on (Micro)VMS 4.7. The oldest version I have found so far is
VAXSET010 which requires VMS 5.3 to run (this was on CSD 1991/05.)
VAXSET is a bundle of the following components (and more in newer
- CMS (Code Management System)
- LSE (Language Sensitive Editor)
- SCA (Source Code Analyzer)
- MMS (Module Management System)
- PCA (Performance Coverage Analyzer)
- DTM (DEC/Test Manager)
I have found versions of CMS and MMS seperately that run on VMS 4.x. If
anyone has old versions of the other components and is willing to share,
that would be much appreciated :-)
<mdehling at gmail.com>
Among the pictures linked from your message about the H742a parts, there is one picture of you backplane. I have been looking for some time for information about the following 11/45 ECO:
> KB11-00001 CODE: D May-72 [ECO]
> Problem: Etch carrying +5V current from Mate-n-Lock pins to backpanel pins is not heavy enough to carry required current. Correction: Run 24AWG wire in parallel with etch on panels which already have Mat-n-Lock assembly installed. Increase thickness of conductor with solder bead if Mate-n-Lock assembly not installed. PDP-11/45 system serial number 101 and later.
The wiring arrangements at the top of your backplane look to be a bit different from mine, and I believe you may have this ECO implemented. While you have your backplane out, could I ask that you take some closeups around the Mate-n-Locks along the top? I'd be very interested to see the board traces and the details of the red bus wiring there.
Pictures of the toasted 11/45 suggest that the original machine had the older power wiring scheme (distribution panel mounted vertically on back of cabinet instead of horizontally at top of cabinet, etc.) although your KB11A serial number badge is >2000, which is curious...
Hi all --
In addition to the 11/45 project I'm also working on restoring an RF08/RS08
fixed head disk/controller (in the vain hopes of one day running TSS/8 on
my PDP-8/I). I have the power supply repaired and running and I'm getting
ready to power the logic up (the disc itself will be a project all its own,
once it arrives).
I'd like to double-check that all the flip chips are in their right places;
I have no cause to think they've been shuffled around but I want to be
sure. The engineering docs have detailed schematics but no placement chart
for the modules themselves. Given enough time with the schematics I could
derive this chart but I'm saving that as a last resort. So, two
1) Does anyone know of a document I've overlooked that includes module
2) Can someone with an RF08 and/or RS08 take a few detailed pictures of the
logic (from the handle side, of course) so I can compare? (Note: the
available RF08/RS08 pictures on the 'net are of the unit currently in my
possession, so are not useful in this regard!)
Spring cleaning. Will be recycled otherwise. While most are probably
not of interest to this group it's possible someone may want the SCSI
related items like the ES-1000C flatbed scanner manual or Yamaha
CRW8424SX manual or the Adaptec stuff.
I'm in downtown Toronto, Canada. On Freenode IRC my nick is genii
imgur gallery of the stuff https://imgur.com/a/USejVEv
"..we are dwarfs astride the shoulders of giants. We master their
wisdom and move beyond it. Due to their wisdom we grow wise and are
able to say all that we say, but not because we are greater than
they." Isaiah di Trani
> From: Eric Smith
> The KB11-B (original 11/70) and KB11-C (later 11/70) have essentially
> the same changes as from the KB11-A to KB11-D
Speaking of which, two of the boards that are different in the KB11-D, from
the -A, are _identical_ to boards in the KB11-C - the M8123 ROM & ROM control
and the M8132 instruction register decode! (The M8123 is also different from
the M8133 board in the KB11-B.) Pretty wierd that the -11/45 and -11/70 CPUs
share two boards, but true! (The FP11 boards are the same in both, too.)
> It sure would be nice to get backplane wirelists for all four (KB11-A,
> -B, -C, and -D).
ISTR a previous, un-fulfilled request for the -11/70 wirelist, so it's been
missing for a while.
We _might_ have the -11/45 wirelist:
but it's short (pp. 128-132), so maybe it's not complete)? Two other
print sets seem to have the same list:
(pp. 45-49 and pp 131-135 respectively).
> Also, I'm looking for a Field Maintenance Print Set for the RH70.
Heh. I didn't see it online; the manual:
is a CSS document, which makes no sense, because the CPU backplane is laid
out to have room for four, so it's an integral part of the /70 CPU - so why
is it a CSS product? Anyway, the print set listed there seems like it might
be a CSS thing, too.
I see that the CHM seems to have a set:
so maybe Al will take pity on us and scan it!
I looked in my /70 print set, and although it contains all sorts of odds and
ends (including MJ11 prints - which kind of half makes sense, since that was
the only main memory option on early /70's), it doesn't have the RH70. (I
didn't see the MJ11 prints on BitSavers, so I was thinking I was going to
have to scan them, but on further looking I found them on deramp.com.)