Take a look at item # 130281137792 -- an HP2647A terminal with no
keyboard, some rust and a fairly bad case of screen rot.
The seller listed it yesterday for $900 initial bid or $1500
buy-it-now.
I politely sent them a note explaining that their prices were an
order of magnitude too high, particularly considering the condition of
the unit.
So what did they do? Dropped it to $400 opening bid.
Yeah, right.
Terminals are getting scarce, but not *that* scarce -- its more likely
that people's interest in serial terminals would dry up before they'd
pay through the nose for a 2647A.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
> 4. Do the freeware copies of TOPS-20 floating around
TOPS-20 is not "freeware". There is nothing in the software
distributions that claims it is so.
XKL bought the rights when DEC got out of the 36-bit business.
Not asserting your rights to something is quite different from
an assertion that it is "freeware".
This is also one of those rocks you really don't want to turn
over..
Here are some pics of a Novell file server circa 1987.
http://bitsavers.org/pdf/novell/68k_file_server
Was wondering if anyone had documentation or software for this.
I had some of the external dual drive scsi boxes for these at
one point.
> Actually, he's gotten pretty far on it.
Good to hear he's had time to work on it again. He hadn't for
quite a while with everything that's been going on. I had forgotten
to ask him about it when I talked to him in Dec.
>A while ago, Choctaw Bob ]bob099 at centurytel.net] wrote:
>
> [Schematic of Peter McCollum's hand built T11 SBC]
> Schematic here http://www.geocities.com/saipan59/dec/t11.jpg
I just got around to looking at this (sorry - been busy :-) and while it's
nice and simple, it uses a 6850 UART for the console. It's easy enough to
interface the 6850 (or any other modern UART for that matter) to the T11
bus, but it's not going to be even remotely PDP-11 compatible. If you want
to have any hope of ever running any real PDP-11 software, you're going to
need a DL11/KL11 compatible console interface.
For the T11 that means you also want a DC319AA DLART (a "DL-11 compatible
UART chip") chip, and after looking around those seem to be far more
difficult to come by than the DCT11 CPU chips. Does anybody have a pile of
DC319 chips handy, or know where they can be found? Unlike the T11 chips,
which can be harvested from a lot of fairly common and not very valuable DEC
boards (e.g. RQDX3s), I don't know of any good donor for DLARTs. There are
a couple on my FALCON SBC-11/21 board, but I'm hardly willing to take it
apart for this project :-)
If you can't find a DC319, then the alternative is to build a DL11
compatible interface using a standard UART like the 6402 and a handful of
discrete logic. I think the minimum you could get away with would be to
implement the DONE and INTERRUPT ENABLE bits (bits 6 and 7) for both the
receiver and transmitter CSR, and then to implement the standard vectors at
60/64. Oh, and of course the data registers for the transmitter and
receiver.
The KL11 also implements a MAINTENANCE bit, a BUSY bit, and a READER
ENABLE bit, but a) we have no reader, b) I doubt (I'm hoping) much software
ever looks at the BUSY bit, and c) probably nothing uses the MAINTENANCE bit
except the diagnostics.
ISTR that DEC had an "official" standard written down for exactly what was
required of a DL-11 compatible serial interface, but I can't find it
anywhere.
Bob
Is there an easy way to tell if a SCSI controller or HD is LVD or HVD? My understanding is that HVD was the first type used and was just called differential F/W and then LVD came out so the old standard was then called HVD.
I have some SUN Symbios 22802 cards coming in I wanted to use in a SUN Ultra Sparc 5 and I think those are HVD (advertised as just differential and I didn't think to cross check). Everything I have is SE/LVD.
PDP-8s has been used for just about everything and have almost as many
different front panels. This is one of the more esoteric ones I've seen:
http://www.flickr.com/photos/joachimschwanter/414790437/
Is this a one off custom build? Rebuilt by a PDP-15 lover perhaps?
Appearantly it was showcased at VCF Europe in 2008, maybe someone
was there and can shed some light on it.
Hope this is tech enough for cctech :)
Cheers,
Pontus.
Pontus <pontus at update.uu.se> wrote:
>> > Anyway, as far as I have been able to determine, all the KA-10 systems
>> > left in the world are located near Johnny Eriksson, as are all the KI-10
>> > systems.
>> >
>> >
>
> I suppose you mean Johnny Billquist, or is there another big collector I
> don't know about :)
No. Johnny Eriksson (aka Bygg) is not me. I don't collect PDP-10 stuff.
I collect PDP-8 and PDP-11 stuff (along with some VAXen and other DEC
things).
Johnny Eriksson is also in Stockholm, but I didn't know he had taken
care of the KA and KI systems. And as far as KI systems goes, Peter
Lothberg still have KICKI, so Bygg don't have all of those. Admittedly a
technicality since if they aren't stored at the same place, it's still
in the same town. So on a "world" scale, they are perhaps all "here".
But maybe Rich Alderson meant just "near" as in physically not far from,
even if not in his possession.
The only KA-10 system I know of, by the way, is KATIA, which was owned
by Stacken. I had/have an account on it, but I don't think it's been
powered on for close to 20 years now. (The name KATIA is a pun in
Swedish, by the way.)
>> > Oh. I didn't mention that, did I? The Toad-1 system dissipates about
>> > 1500W in operation and plugs into a wall socket. The KL-10, with the
>> > original power harness, requires 240V x 60A 3-phase, with a power-on
>> > inrush of ~12.4KVA, and a steady-state operational requirement of ~6-9KVA.
>> >
>> >
>
> I Wish we could get our DECsystem-20 running again, I think we could get
> the power, but space and cooling is more of a concern.
It's all a question about money. But yes, it would be nice to get one of
them running again.
Johnny
