8 May
2011
8 May
'11
12:43 p.m.
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was
wondering if anyone else has thought of making S100 boards containing said
processors.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
8 May
8 May
1:02 p.m.
On Sun, 8 May 2011, David Griffith wrote:
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was
wondering if anyone else has thought of making S100 boards containing said
processors.
I'm pretty certain there used to be one. Osprey, IIRC, built around
a J-11.
--
roger ivie
rivie at ridgenet.net
5:20 p.m.
On May 8, 2011, at 4:02 PM, Roger Ivie wrote:
On Sun, 8 May 2011, David Griffith wrote:
The Osprey was done by Strobe Data Inc. It's still produced I believe.
The Osprey is an ISA or PCI product though.
I have their Data General board set (Hawk board), it's pretty cool.
Rob
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was wondering if
anyone else has thought of making S100 boards containing said processors.
I'm pretty certain there used to be one. Osprey, IIRC, built around
a J-11. --
roger ivie
rivie at ridgenet.net
Robert Borsuk
rborsuk at colourfull.com
Colourfull Creations
http://www.colourfull.com
7:28 p.m.
Robert Borsuk wrote:
On May 8, 2011,
at 4:02 PM, Roger Ivie wrote:
On Sun, 8
May 2011, David Griffith wrote:
Given that old Soviet knockoffs of pdp11 cpus can
be found on ebay, I was wondering if anyone else has thought of making S100 boards
containing said processors.
I'm pretty certain there used to be one. Osprey, IIRC, built around
a J-11.
9:24 p.m.
On Sun, 8 May 2011, Jerome H. Fine wrote:
If an S100 board had a PDP-11 CPU, then would that
become the master CPU?
Bear in mind that I never used the thing; all I have are old
memories of a magazine ad. My impression was that it was just
like the ISA Osprey.
--
roger ivie
rivie at ridgenet.net
9 May
9 May
3:55 a.m.
On 05/09/2011 12:24 AM, Roger Ivie wrote:
On Sun, 8 May 2011, Jerome H. Fine wrote:
most S100 system only had one cpu! It wasn't till way
later under IEE696
that multiple bus master slave CPUs were existent and even then less than
common. the typical multiple CPU system would be like a Compupro
8/16 where the one CPU board carried a 8085 and 8088 with provisions to
switch between them.
So the system using the Marinechip T11 board that was the sole cpu.
I have both 8/16 and a true multimaster S100 system the later was
my own design boards.
Allison
If an S100 board had a PDP-11 CPU, then would
that
become the master CPU?
Bear in mind that I never used the thing; all I have are old
memories of a magazine ad. My impression was that it was just
like the ISA Osprey. 
7:41 a.m.
Jerome Fine (jhfinedp3k at compsys.to) wrote:
How would device drivers designed for a Qbus or Unibus do disk I/O?
How would serial ports to a terminal operate?
This is the killer with the S-100 plan. I've got a bag of T-11 chips and
had considered doing something like the SBC6120 for a PDP-11, but it's
pointless unless all the peripherals are also PDP-11 compatible. Unless, of
course, you have lots of time on your hands and want to write your own
PDP-11 OS and tools, and that'd take an order of magnitude more time than
designing the hardware.
You could, if you had the right bits and knew enough about RT11, just
write new device drivers for RT11 and port it to S100 hardware. I'm sure
there are people with enough knowledge to do that, but RT11 is _not free_.
What hobbyists do in their garage is one thing, but any commercial endeavor
would have to be careful about putting their name on that.
AFAIK there are no "free" OSes that will run on a T11. 2bsd is your only
option, and that'll need at least an F11 CPU. An F11 S-100 card would be a
cool project (I'd buy one!) but it'd be much harder. F11s are a multi-chip
chipset, much less well documented at the hardware pin level, and less
available than T11s.
There's always the FPGA route, but then the S100 becomes superfluous. You
could fit a whole 11/73, including all the peripherals, into any modern FPGA
without even trying and all you'd need beyond that are the connectors and
level shifters.
Bob
7:55 a.m.
On Mon, 9 May 2011, Bob Armstrong wrote:
AFAIK there are no "free" OSes that will
run on a T11.
What about the fuzzball? I don't know much about it, but IIRC it's free.
--
roger ivie
rivie at ridgenet.net
12:46 p.m.
On Mon, 9 May 2011, Bob Armstrong wrote:
I don;t know much about it either, and I';ve not looked at it for years,
but from ehat I remember you need RT11 (not free) for some of the
untilities nad also to build fuzzball in the first place.
-tony
AFAIK there are no "free" OSes that
will run on a T11.
What about the fuzzball? I don't know much about it, but IIRC it's free.
10 May
10 May
6:52 a.m.
What about the fuzzball? I don't know much about
it, but IIRC it's free.
I don' know much about it either, and I've not looked at it for years,
I just remembered that there's also TSX-11+. That was originally based on
RT too, but they got tired of paying the DEC license fees and just rewrote
all the RT11 bits that were necessary to make it work. I think Lyle has
secured permission for hobbyists to use TSX, but I don't know the terms.
Bob
9 May
9 May
10:53 a.m.
Bob Armstrong wrote:
That is the issue writing RT compatable drivers.
The issue is the easy cpu is T11, the only OS that runs on that due to
max ram of 32KW is
RT11. RT11 is easily found and drivers are not that hard but no one has
done that.
An alternate is an OS that has a source(in C as in CP/M68) or could be
spec'd easily such as CP/M.
Jerome Fine
(jhfinedp3k at compsys.to) wrote:
How would device drivers designed for a Qbus or Unibus do disk I/O?
How would serial ports to a terminal operate?
This is the killer with the S-100 plan. I've got a bag of T-11 chips and
had considered doing something like the SBC6120 for a PDP-11, but it's
pointless unless all the peripherals are also PDP-11 compatible. Unless, of
course, you have lots of time on your hands and want to write your own
PDP-11 OS and tools, and that'd take an order of magnitude more time than
designing the hardware.
You could, if you had the right bits and knew enough
about RT11, just
write new device drivers for RT11 and port it to S100 hardware. I'm sure
there are people with enough knowledge to do that, but RT11 is _not free_.
What hobbyists do in their garage is one thing, but any commercial endeavor
would have to be careful about putting their name on that.
Some things like DL11(Serial line card) compatable port are easy to do
and a quad DL
could be done and used with a TU58 (or a solidstate analog of one). I
have done that
and it runs RT out of the box on a T11. It's not S100 and fairly simple
but complete
as RT11SJ can tell.
Forget RT11FB, RSTS or RSX as they will not do well in 24KW.
Faster and more involved mass storage is harder but you have a huge
assortment of non MSCP devices to imitate. I leave out MSCP as that is a
CPU (T11) on a board to do that.
One approach is to make a DL compatable port that does not use the
serial deivce but
looks to RT like DL and has a local PIC or what not to make a SD memory
looks like a
32mb disk (RT does not use more than 32MB without LD) and if the
handshake looks
like DL then your can use the TU driver (TU58) resized for a larger
number of blocks.
AFAIK there are no "free" OSes that will
run on a T11. 2bsd is your only
option, and that'll need at least an F11 CPU. An F11 S-100 card would be a
cool project (I'd buy one!) but it'd be much harder. F11s are a multi-chip
chipset, much less well documented at the hardware pin level, and less
available than T11s.
There is UNIX but that is bigger and you still ahve the device driver
issue.
I'd think something like Linux or uClinux are both possible but again
drivers.
There's always the FPGA route, but then the S100
becomes superfluous. You
could fit a whole 11/73, including all the peripherals, into any modern FPGA
without even trying and all you'd need beyond that are the connectors and
level shifters.
There is that.
Genrally the PDP11 on S100 is not a great scheme as the bus to be
reasonable has to be run as 16bit mode and memory has to support RMW and
that may cause havock with some dynamic cards. That and something like
the T11 is just right for a SBC with 32KW of
static ram and a DLV11J( 4 DL compatable serial ports). Add a boot/ODT
rom at 173000Q
and your set to go. That and it's less effort then trying to wedge it
into the S100 format
and bus.
Generally I did the T11 thing to see if I could but, I have a BA11VA
with a 11/23 cpu, 256KB of ram, DLV11J (4 port serial) and MRV11(boot
rom) running for the last 30 years with a TU58 and generally speaking
larger boxes are easier to do. It's more effort to build
up a Tll than find the bits to do a 11/23 in a BA32 box. I have several
other Qbus 11s
(LSI11 [x2], 11/23B[x3], 11/73) as complete systems already. I could
ahve used the falcon
(SBC21) CPU/Rom/IO card with a pair of MXV11s but the 11/23 is better
performance and has the MMU.
You have to understand RT11 and DEC pdp11 system for the above to make
sense.
Allison
10 May
10 May
6:48 a.m.
I have done that and it runs RT out of the box on a
T11.
Did you build a T-11 system? Can you post more information ?
Forget RT11FB, RSTS or RSX as they will not do well in
24KW.
FWIW, RSX-11S will run on an unmapped system. Of course RSX-11S was
intended for "embedded" applications and it's not very useful as a general
purpose OS. And in theory you can build RSX-11S systems on an RSX=11M or M+
system, but I'm not sure all the stuff you need is part of the standard M/M+
distribution so it might be hard to come up with the necessary files.
Didn't at least some DSSI drives, like the RX7x, have embedded T11s that
ran RSX-11S?
Bob
10:50 a.m.
From: Bob Armstrong
Sent: Tuesday, May 10, 2011 6:49 AM
> Forget RT11FB, RSTS or RSX as they will not do
well in 24KW.
FWIW, RSX-11S will run on an unmapped system. Of
course RSX-11S was
intended for "embedded" applications and it's not very useful as a general
purpose OS. And in theory you can build RSX-11S systems on an RSX=11M or M+
system, but I'm not sure all the stuff you need is part of the standard M/M+
distribution so it might be hard to come up with the necessary files.
At least one version of RSX-11M will run on an unmapped system in 28KW. The
front end PDP-11/40 on a KL-10 runs RSX-20F, which is very much standard -11M
with the exception of the 18-bit sector size in the file system. The -20F
developer's kit consisted of a bootable RP06 pack with -11M on it, and all the
-11M documentation. There is one slim -20F manual which describes the partition
layout.
(Damn, damn, damn, I wish I had saved that damned pack from LOTS, but I didn't
expect that I would ever be managing those systems again at that time.)
Didn't at least some DSSI drives, like the RX7x,
have embedded T11s that
ran RSX-11S?
In point of fact, the intent of RSX-11S is that you build on RSX-11M and run
on -11S. At least, that's what the documentation for the pair says.
Rich Alderson
Vintage Computing Sr. Server Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104
mailto:RichA at vulcan.com
mailto:RichA at LivingComputerMuseum.org
http://www.LivingComputerMuseum.org/
11:20 p.m.
Can anybody explain how the Mentec boards fit into all of this.
My understanding was they were the next generation of PDP11.
There still seems to be a mystery around what happened to the rights to
PDP11 they held. I have seen a recent reference to them having been sold to
an unnamed American company who would quote 'Make them available'.
Can anybody solve the mystery of what actually happened?
?
Rod Smallwood
-----Original Message-----
From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
On Behalf Of Bob Armstrong
Sent: 10 May 2011 14:49
To: 'General Discussion: On-Topic and Off-Topic Posts'
Cc: 'Allison'
Subject: RE: pdp11 CPU on S100 board?
I have done that and it runs RT out of the box on a
T11.
Did you build a T-11 system? Can you post more information ?
Forget RT11FB, RSTS or RSX as they will not do well in
24KW.
FWIW, RSX-11S will run on an unmapped system. Of course RSX-11S was
intended for "embedded" applications and it's not very useful as a general
purpose OS. And in theory you can build RSX-11S systems on an RSX=11M or M+
system, but I'm not sure all the stuff you need is part of the standard M/M+
distribution so it might be hard to come up with the necessary files.
Didn't at least some DSSI drives, like the RX7x, have embedded T11s that
ran RSX-11S?
Bob
9 May
9 May
5:32 p.m.
Bob Armstrong wrote:
Jerome Fine
(jhfinedp3k at compsys.to) wrote:
How would device drivers designed for a Qbus or Unibus do disk I/O?
How would serial ports to a terminal operate?
This is the killer with the S-100 plan. I've got a bag of T-11 chips and
had considered doing something like the SBC6120 for a PDP-11, but it's
pointless unless all the peripherals are also PDP-11 compatible. Unless, of
course, you have lots of time on your hands and want to write your own
PDP-11 OS and tools, and that'd take an order of magnitude more time than
designing the hardware.
You could, if you had the right bits and knew enough about RT11, just
write new device drivers for RT11 and port it to S100 hardware. I'm sure
there are people with enough knowledge to do that, but RT11 is _not free_.
What hobbyists do in their garage is one thing, but any commercial endeavor
would have to be careful about putting their name on that.
AFAIK there are no "free" OSes that will run on a T11. 2bsd is your only
option, and that'll need at least an F11 CPU. An F11 S-100 card would be a
cool project (I'd buy one!) but it'd be much harder. F11s are a multi-chip
chipset, much less well documented at the hardware pin level, and less
available than T11s.
There's always the FPGA route, but then the S100 becomes superfluous. You
could fit a whole 11/73, including all the peripherals, into any modern FPGA
without even trying and all you'd need beyond that are the connectors and
level shifters.
10 May
10 May
11:08 a.m.
But then, what do you do with all that hardware once
you get it working? I realize that the fun for hardware
addicts (as opposed to software addicts like myself)
is to get the system working and running the OS.
It's not unheard-of for us hardware types to lose interest in a machine
once it will pass disgnostics and boot the OS :-)
More seriously,. thre's always more hardware to work on. Yet another
perpheral to restore, confiogure, and get running. Or something to build,
perhaps a test/maintenance board, or an interface to some more modern
machine or device.
Is that the end of the process? With software, there
always seems to be a bug to be fixed or, especially
Unfortunately, old hardware does fail. So even when you've got the
machine up and running, it may develop faults that oyu have to trace and
repair.
Another aspect is figuring out just how it really works. This is not a
problem with (older) DEC machines which had excellent techncial manuals
explaing the microcode and the circuitry, but it is an issue with soem
other manufacutrers. So you trace out schematics, desolder the ROMs, read
them out and figure out just what it going on. Yes, I've spent far too
many late mights working out just what a particular state machine does...
-tony
12:44 p.m.
On 5/10/2011 1:08 PM, Tony Duell wrote:
Didn't you mean fortunately? ;-)
But then, what
do you do with all that hardware once
you get it working? I realize that the fun for hardware
addicts (as opposed to software addicts like myself)
is to get the system working and running the OS.
It's not unheard-of for us hardware types to lose interest in a machine
once it will pass disgnostics and boot the OS :-)
More seriously,. thre's always more hardware to work on. Yet another
perpheral to restore, confiogure, and get running. Or something to build,
perhaps a test/maintenance board, or an interface to some more modern
machine or device.
Is that the end of the process? With software, there
always seems to be a bug to be fixed or, especially
Unfortunately, old hardware does fail. So even when you've got the
machine up and running, it may develop faults that oyu have to trace and
repair.
Another aspect is figuring out just how it really works. This is not a
problem with (older) DEC machines which had excellent techncial manuals
explaing the microcode and the circuitry, but it is an issue with soem
other manufacutrers. So you trace out schematics, desolder the ROMs, read
them out and figure out just what it going on. Yes, I've spent far too
many late mights working out just what a particular state machine does...
-tony
8 May
8 May
8:24 p.m.
I thought the Strobe Data Osprey card was built around a FPGA, and is
built for ISA and PCI... not S-100.
Though, an S-100 card with a PDP-11 processor would be interesting.
On 8 May 2011 16:02, Roger Ivie <rivie at ridgenet.net> wrote:
On Sun, 8 May 2011, David Griffith wrote:
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I was
wondering if anyone else has thought of making S100 boards containing said
processors.
I'm pretty certain there used to be one. Osprey, IIRC, built around
a J-11.
--
roger ivie
rivie at ridgenet.net
11:45 p.m.
On 8 May 2011 at 23:24, Christian Gauger-Cosgrove wrote:
I thought the Strobe Data Osprey card was built around
a FPGA, and is
built for ISA and PCI... not S-100.
That's what I was wondering. Rather than using an old Soviet-design
IC with uncertain supply, it would make more sense to use one of the
FPGA PDP11-design CPUs--and probably with a fairly substantial speed
gain.. At least one of the PDP-11 designs on Opencores has a built-
in IDE interface.
--Chuck
3:54 p.m.
On 05/08/2011 03:43 PM, David Griffith wrote:
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I
was wondering if anyone else has thought of making S100 boards
containing said processors.
Marineland I believe was the name of a company that put a T11 on a S100
card.
Allison
4:32 p.m.
David Griffith wrote:
Given that old Soviet knockoffs of pdp11 cpus can be found on ebay, I
was wondering if anyone else has thought of making S100 boards
containing said processors.
The documentation is harder to get than the chips. I've got some of the
chips, and even a data sheet (in Russian) for one of them, but the data
sheet doesn't contain sufficient detail. A proper user manual for the
parts existed, but I haven't been able to obtain a copy. On the other
hand, I haven't been looking for the last few years, so perhaps one has
turned up since.
17 May
17 May
5:50 p.m.
I have raised the issue of documentation for the Soviet parts with a
fellow who posted here recently who lives in Moscow. He will help with
getting documenation translated if it can be had.
I passed him three auctions with the parts I believe people here could
bid on and obtain. He also looked for some information and sent it to me.
The latest thread is below:
If anyone has some pointers to Soviet documentation which has the
information to design a board for these chips, but needs translation,
you can post here or reply to me. I will see Pavel can get it and see if
it has what would be needed.
I didn't add this to the thread of this discussion which is off on the
tangent of PDP software legalities, but am rather interested in an S-100
or any variant of this board which can run software, whether it be on an
S100 card or other. W/o more information than I've seen I don't think
there is much one can do with the chips. The systems for sale would be a
better bet..
I also am pasting the three chips I found on ebay with links to them.
Many thanks to Pavel for looking into this.
Jim Stephens
Hello, Jim.
Of course, I'll do what I can.
1). I am not too good in PDP systems, but I know at least one good
specialist.
2). Excuse me, I do not know, what is S100. Is it important for
searching the information?
3). I am afraid, that all documentation would be in Russian.
At least I have never seen soviet documentation in English.
4). Have you got a list of particular questions?
I mean the list of chips in your interest.
5). Here is soviet small PDP machines:
A). BK-0010 family
http://www.leningrad.su/museum/show_calc.php?n=57
Cheap and widespread home line, partly PDP-11 compatible.
Cost 50 - 100 USD now.
http://molotok.ru/listing.php/search?sg=0&string=%D0%B1%D0%BA&categ…
<http://molotok.ru/listing.php/search?sg=0&string=%D0%B1%D0%BA&category=66389>
2). DVK family
http://www.leningrad.su/museum/show_calc.php?n=254
Rare but usual professional computer, partly PDP-11 compatible.
Cost ~1000 USD.
http://spb.molotok.ru/kompyuter-dvk-3-2-i1605480948.html
3). Electronica 60 family
http://www.leningrad.su/museum/show_calc.php?n=296
Very similar to PDP-11 computer.
Rare today, could cost ~1000 USD.
4). Electronica 85
DEC Professional 3xx clones.
Very rare today, could cost >1000 USD.
Did I answer to you question correctly?
Best regards, Pavel.
You wrote 14 May 2011 ?., 01:04:55:
Pavel,
would you be able to look around for the specifications for a PDP 11
IC?
<snip>
thanks
Jim Stephens
--
? ?????????,
K1801VM1 - USSR Gold Pink Ceramic Planar Clone of DEC PDP-11 CPU
380335079672
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079672
Ultra RARE Russian Soviet CPU CLone of DEC PDP-11. MADE IN USSR by
Angstrem plant.
K1801VM1 in Gold Pink Ceramic Planal body (Angstrem plant, 1991)
Great item for chip collectors !!!
For more information, please visit -
http://www.cpu-world.com/CPUs/USSR-1801/index.html
Another listing:
5x KN1831VU1 USSR Gold Clone PLCC DEC PDP J-11 Family
380335079651
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079651
5x KN1831VU1 (WU1) - 84-pin PLCC IC - DEC J-11 clone from the
Elektronika-85 Computer with M8 processor
Youl'll receive 5 (five) ICs from the old stock with passport and
original factory box.
Yet another listing
2x KR1801VM1,2 - USSR Clones of DEC PDP-11 CPU -RARE-
380335079630
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079630
6:12 p.m.
On Wed, May 18, 2011 at 10:50 AM, jim s <jws at jwsss.com> wrote:
5). Here is soviet small PDP machines:
I was really surprised when I found out about this model, a handheld
PDP-11 compatible, the ELEKTRONIKA MK-90
http://www.leningrad.su/museum/show_calc.php?n=174
18 May
18 May
3:02 a.m.
hello everyone ,I have several pdp11 compatible machines from
soviet union,you can see them here
http://www.radio-astronomie.com/ordinosaurus.htm
I have bought processors,new ,not uncertain from ebay
here:
http://www.evita.lt/en/p-aboutus/
the are correct ,ship fast ,not expensive.
Other shops exist like Platan etc....
software cand be found here
http://www.emuverse.ru/downloads/computers/BK/
and here (among lots)
http://www.pdp-11.ru/mybk/pdp11/
this guy has ported a small unix to those machines
http://vak.ru/doku.php
schematics of several pdp11 compatible machines (bk,uknc,dvk)here
http://www.emuverse.ru/downloads/computers/
this will give you ideas
of course it is in russian and cyrillics ,but translators
work well
I have a colleague in russia who bought for me lots of
circuits:microprocessors,fdc,serial controllers,all qbus compatible,I think
he would be happy to help you ,
he is particularly reliable.I hope this will help you.I use those machines
since nearly 10 years,and I am thinking of building one as all necessary is
available on the net.
I am also thinking of building a pdp8 with a 6100,the idea is the use of
nvrams like maxim's to simulate core memories...Best regards to all
Alain Nierveze
492 all?e Montesquieu
33290 Le Pian Medoc
nierveze at radio-astronomie.com
www.radio-astronomie.com
----- Original Message -----
From: "jim s" <jws at jwsss.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Wednesday, May 18, 2011 2:50 AM
Subject: Re: pdp11 CPU on S100 board?
I have raised the issue of documentation for the Soviet
parts with a fellow
who posted here recently who lives in Moscow. He will help with getting
documenation translated if it can be had.
I passed him three auctions with the parts I believe people here could bid
on and obtain. He also looked for some information and sent it to me.
The latest thread is below:
If anyone has some pointers to Soviet documentation which has the
information to design a board for these chips, but needs translation, you
can post here or reply to me. I will see Pavel can get it and see if it
has what would be needed.
I didn't add this to the thread of this discussion which is off on the
tangent of PDP software legalities, but am rather interested in an S-100
or any variant of this board which can run software, whether it be on an
S100 card or other. W/o more information than I've seen I don't think
there is much one can do with the chips. The systems for sale would be a
better bet..
I also am pasting the three chips I found on ebay with links to them.
Many thanks to Pavel for looking into this.
Jim Stephens
Hello, Jim.
Of course, I'll do what I can.
1). I am not too good in PDP systems, but I know at least one good
specialist.
2). Excuse me, I do not know, what is S100. Is it important for
searching the information?
3). I am afraid, that all documentation would be in Russian.
At least I have never seen soviet documentation in English.
4). Have you got a list of particular questions?
I mean the list of chips in your interest.
5). Here is soviet small PDP machines:
A). BK-0010 family
http://www.leningrad.su/museum/show_calc.php?n=57
Cheap and widespread home line, partly PDP-11 compatible.
Cost 50 - 100 USD now.
http://molotok.ru/listing.php/search?sg=0&string=%D0%B1%D0%BA&categ…
<http://molotok.ru/listing.php/search?sg=0&string=%D0%B1%D0%BA&category=66389>
2). DVK family
http://www.leningrad.su/museum/show_calc.php?n=254
Rare but usual professional computer, partly PDP-11 compatible.
Cost ~1000 USD.
http://spb.molotok.ru/kompyuter-dvk-3-2-i1605480948.html
3). Electronica 60 family
http://www.leningrad.su/museum/show_calc.php?n=296
Very similar to PDP-11 computer.
Rare today, could cost ~1000 USD.
4). Electronica 85
DEC Professional 3xx clones.
Very rare today, could cost >1000 USD.
Did I answer to you question correctly?
Best regards, Pavel.
You wrote 14 May 2011 ?., 01:04:55:
Pavel,
would you be able to look around for the specifications for a PDP 11
IC?
<snip>
thanks
Jim Stephens
--
? ?????????,
K1801VM1 - USSR Gold Pink Ceramic Planar Clone of DEC PDP-11 CPU
380335079672
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079672
Ultra RARE Russian Soviet CPU CLone of DEC PDP-11. MADE IN USSR by
Angstrem plant.
K1801VM1 in Gold Pink Ceramic Planal body (Angstrem plant, 1991)
Great item for chip collectors !!!
For more information, please visit -
http://www.cpu-world.com/CPUs/USSR-1801/index.html
Another listing:
5x KN1831VU1 USSR Gold Clone PLCC DEC PDP J-11 Family
380335079651
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079651
5x KN1831VU1 (WU1) - 84-pin PLCC IC - DEC J-11 clone from the
Elektronika-85 Computer with M8 processor
Youl'll receive 5 (five) ICs from the old stock with passport and original
factory box.
Yet another listing
2x KR1801VM1,2 - USSR Clones of DEC PDP-11 CPU -RARE-
380335079630
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380335079630
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