When I was debugging the TC59 mag tape controller on the PDP-9 I found that
sometimes the READY signal from the TU20 would not go active. Yesterday the
intermittent problem became permanent.
The TU20 manual is on Bitsavers (Thanks to the LCM).
The ~MOTION signal goes inactive when the tape is moving and goes active
when the tape stops. That looks correct. The SETTLING DOWN signal should go
active for 5ms, and then go inactive. The SETTLING DOWN signal is always
active, so READY never goes active.
I measured the voltage drop on all of the transistors and diodes on the
R303 is slot A21. All of the measurements look OK. I am not really
qualified to debug an R module to the component level, so a replacement
module would be really helpful.
Does anyone have an R303 flipchip that they would part with?
--
Michael Thompson
I have acquired a Pericom Joystick 11, helping an acquaintance clear
out his attic before he emigrated.
It's an analogue joystick with a tiny red "fire" button on the tip of
the stick, in a large, solid metal case. No other buttons. It has an
attached coiled data cable with a 5-pin DIN plug on the end.
I thought it was a BBC Micro analogue stick, something like a Bitstik:
http://acorn.chriswhy.co.uk/8bit_Upgrades/Acorn_BitStik.html
However, I've sold all 5 of my BBC Micros to Dave Moore of Replay
Events - http://www.replayevents.com/
He's a bit of an Acorn expert and said this wasn't a BBC Micro device
and it's not a BBC Micro connector. Wrong kind of DIN plug.
On the label on the base, it says:
Pericom
Manufacturer of Micro Computers
Graphic Terminals and VDUs
Pericom PLC Rockingham Drive
Linford Wood, Milton Keynes MK14 6LH
Telephone (0908) 670000 Telex 826442
Model No. JOYSTICK 11
Ser. No. J. S. 774
In theory, you should be able to see a photo of it here:
https://www.dropbox.com/s/ce2py6bjfvcrsqh/Pericom_joystick_11.jpg
Anyone know what it is, what it's from or if it's of any interest to anyone?
--
Liam Proven ? Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884
Jeff Monasch has just found about 30 boxes of DEC Rainbow and Pro350
software while cleaning out his garage. Any takers? Email Jeff at
jcm_temp at comcast.net
Thanks,
Bob
Folks,
In addition to the LA400s I posted last week there's also at least a boxed
LA75, 2 LA210s and other DEC printers. I don't want to see them binned.
Anyone?
--
Adrian/Witchy
Binary Dinosaurs creator/curator
Www.binarydinosaurs.co.uk - the UK's biggest private home computer
collection?
Dear Classiccmp community,
After a long time of searching on myself with only minimal results on the "CPT Phoenix Start" - system, I would like to tap the collective knowledge.
The system (powersupply + mainbox (3.3"floppy) + keyboard (interesting shaped) + portrait full page screen) itself is fine, tries to boot, has a daisy-wheel printer and is only missing the 3.5" boot media.
I have only the bare hardware and a couple of cables, assume it was used in professional word-processing.
Appreciate any pointer.
Mit freundlichen Gr??en,
With kind Regards,
Bernhard Wulf
Just found that I have one (or maybe even more than one, need
to double-check that) HP Integrity rx2620, rx2600, zx6000,
etc. type (650-Watt) power supply unit left here. This may
also work in equivalent HP 9000 (PA-RISC) systems, for all I
know.
Anyone interested? It's sort of in the way. (It's located
in the Netherlands.)
- MG
I've had 10 dec # XX2247 front panel tubular keys machined from the
original DEC code settings. These are not duplicates of an existing
key, but freshly machined based on the actual key requirements, so they
are suitable as master originals.
They have all been tested in my pdp11/20 and work perfectly.
These will fit pdp8 (classic), pdp8/e, 8/I, 8/L, 8/m, and the 8/L
expansion box, as well as the pdp11/15, /20, /30, /45, /60 and /70; also
fits the VAX 11/750.
They will also work in the pdp 11/24 and 11/44, but are not really
required; any ACE blank will work with these two machines.
Price is $16 USD including postage in North America; I imagine postage
to the EU and points east will be slightly more expensive.
Available immediately.
I have it on craigslist, but I have all the parts and a ton of
software. Feel free to contact me directly. If it needs to be shipped,
we'll have to figure that out. Thanks.
http://orangecounty.craigslist.org/sys/4151372025.html
Does anyone know of a source to purchase, in quantity, the cardboard head
protectors for 5.25" floppy drives?
Thanks,
Garrett Meiers
www.linkedin.com/in/theunixguy
Hello Richard,
sorry I did forget to answer your mail. I contacted Al a few days ago before uploading the docs to the bitsavers ftp-server. He will put them online.
Kind regards,
Pierre
------------------------------
Richard schrieb am So., 27. Okt 2013 19:46 PDT:
>
>In article <1382506053.54989.YahooMailNeo at web133101.mail.ir2.yahoo.com>,
> P Gebhardt <p.gebhardt at ymail.com> writes:
>
>> somebody asked for documentation about the ND600 system.
>
>That was me. I sent you a private email, but never heard back. If
>you email the PDFs to me I'll get them onto bitsavers.
>--
>"The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline>
> The Computer Graphics Museum <http://ComputerGraphicsMuseum.org>
> The Terminals Wiki <http://terminals.classiccmp.org>
> Legalize Adulthood! (my blog) <http://LegalizeAdulthood.wordpress.com>
More good news Guys. I now have our 80286 S-100 board running at 12 MHz (no
wait states) with our 4MG Static RAM board.
I noticed that my bus controller (U68) was a 82C288. Looking around here I
found I had an 82C288-10. When I tried that, the board came up fine at 12MHz
(no wait states). Clearly the CMOS clock generator while rated for 10MHz,
works at a higher speed. The original 82C288 I think is for 8MHz, pushing it
to 12 was too much.
Fortunately I already have a 12Mhz clock generator (28C284-12) on board.
Looking here:-
http://www.cpu-world.com/CPUs/80286/MANUF-AMD.html
I see there are PLCC 16MHz AMD chips. Does anybody know where to find these
chips and the corresponding -16 clock generator and bus controllers.
John
From: n8vem-s100 at googlegroups.com [mailto:n8vem-s100 at googlegroups.com] On
Behalf Of David Fry
Sent: Saturday, October 26, 2013 1:22 PM
To: n8vem-s100 at googlegroups.com
Cc: cctalk at classiccmp.org; Andrew Lynch; monahan at vitasoft.org
Subject: [N8VEM-S100:2006] Re: S-100 80286 CPU board write-up
Hi John
Excellent news :-)
I was kinda holding off on starting my 80286 board in case the mods/fix
ended up being extensive (I have the S-100 Ram/Rom board on order also)
Just wondering if will you be investigating why the final board will only
manage 11Mhz when the prototype manages 12Mhz ?
It's not a big issue but would be nice to get to 12Mhz if possible.
regards and thanks
David Fry
On Saturday, October 26, 2013 7:06:09 PM UTC+1, monahanz wrote:
Good news, It now looks like our new 80286 Master/Slave S100 bus CPU board
works fine with not only our 4MG Static RAM board bit also the 1M RAM/ROM
board.
The problem I outlined below was due to the fact that I had jumpers wrong on
both the CPU and ROM/RAM boards. The 80286 works fine with both boards at
11MHz (with no wait states).
One of the reasons for "upgrading" the ROM/RAM board was to simplify the
"rats nest" of jumpers on the earlier boards for the diverse range of RAM &
RAM chips (including flash RAM) that board can use. The new RAM/ROM boards
should be here soon. If you have the older board, consider switching over
(it uses all the same chips/parts) . For new users it is a very useful
memory board.
One remaining bug I see with the 80286 board is that some older S100 Static
RAM boards (particularly those that use PALs, such as the Godbout 128K
static "RAM21" board or the BG Computers 256K Static RAM board), need a
patch. You need to bend out pin 2 of U56 and jumper it to pin 9 of U68 - the
bus controller. This seems to provide the early MWRITE status signal these
boards require. Interestingly this is also the case for our 8088 CPU board
(jumper K5,2-3), but not the 8086 board.
I have written up a detailed account for the 80286 boards construction
here:-
http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2
0Board.htm
And a description of the RAM/ROM board here.
http://www.s100computers.com/My%20System%20Pages/RAM
<http://www.s100computers.com/My%20System%20Pages/RAM&ROM%20Board/RAM&PROM%2
0Board.htm> &ROM%20Board/RAM&PROM%20Board.htm
Enjoy
John
From: John Monahan [mailto:mon... at vitasoft.org <javascript:> ]
Sent: Sunday, October 20, 2013 10:53 AM
To: 'n8vem... at googlegroups.com <javascript:> '
Cc: 'cct... at classiccmp.org <javascript:> '; Andrew Lynch
(andrew... at sbcglobal.net <javascript:> )
Subject: S-100 80286 CPU board write-up
Hi everybody. I have just written up construction notes on this 80286 CPU
board.
Please see here:- for details:-
http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2
0Board.htm
Unfortunately there are some strange issues with the board running with RAM
boards other than our 4MG Static RAM board
(described here:-)
http://www.s100computers.com/My%20System%20Pages/RAM%20Board/4MG%20RAM%20Boa
rd.htm
With that RAM board, the 80286 is rock solid at 11MHz (no I/O or ROM wait
states required).
Please see the bottom of the page for details.
I am traveling all of next week but will explore further when I get back.
Sorry about the bad news
John
--
You received this message because you are subscribed to the Google Groups
"N8VEM-S100" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to n8vem-s100+unsubscribe at googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
Hello list,
somebody asked for documentation about the ND600 system. Finally, I found some time to scan all docs I have about it. They're available as PDFs.
Contact me off-list to get them.
Alternatively, the docs could be put online on bitsavers, if Al would be fine with it and finds the time to do so.
Kind regards,
Pierre
?
-------------------------------------------------------------------------------
Pierre's collection of classic computers : http://classic-computing.dyndns.org/
>azd30 wrote:
>Hi,
>
>I recently aquired an old Netcom system and I'd like to find out a bit more info about this backplane.
>It's an 11/23 system (based on CPU) . It has some standard DEC
>cards in it (M8186 CPU, DLV11, BDV11 bootstrap board ) as well as a thrid party 256Kb memory board and an MXV22 floppy controller.
>Apparently the system ran RT-11 from floppies a few years back before it was put in storage.
>
>
If you can specify all the boards (or at least the DEC boards) by their
board number (i.e. M8186), it would be more useful. Is the DLV11
an M8043 (actually DLV11-J)? Just in Case, please also mention
dual or quad board.
>I have read through the PUPS archives, esp. a post from Michael Sokolov back in 98, where he describes
>the different types of QBus'es. Q/Q, Q/CD etc. Have also read through the info on hampage.hu and various other sites that host PDP11 related info,
>but am still unsure about this particular beast.
>
>It looks like the backplane that I have (according to the archives and some documents written at SLAC in late 70's)
>is a serpentine or sinusoidal type configuration. The SLAC documents actually refer to the Netcom backplane but they
>describe it a simple serpentine type.
>
>A diagram on my cardcage describes it as follows:
>
>A B C D
>------------>
><-----------
>------------->
><------------
>
>There is also a blurb about slot 2/CD being wired differently. Two slots on the diagram are pre-printed for RL controllers. I can't rembeber the exact wording, since I don't have the computer in front of me.
>
>
This is possible, but seems VERY unlikely with just
a 4 slot backplane. As far as I understand, in order
to be useful to support an RL controller, at least 2 slots
must be wired as ABCD. The BA23 box has the first
three slots as ABCD and the other five slots as ABAB,
so the concept is possible. Having two ABCD slots also
supports PMI memory with the memory being placed in
slot 1 and the CPU in slot 2, but that requires at least
a quad M8190 CPU card.
>It gather that I insert the CPU in 1AB, then rather than putting the next card in 2AB, I would place it in 1CD. Next would be 2CD and so on ,snaking down the line. Is this correct? While this is all fine for dual cards, but how does this configuration
>handle quad cards? I'm guessing that it has to do something with that 'blurb', but that would mean that I can only have one quad card installed, and it would be right towards the begining of the bus. The BDV11 should
>be the last card in the chain from what I can remember.
>
>
I forgot to add, please also specify where all the current
cards are located in the back plane.
With an M8186 to start, the BDAL17-20 lines should be
either unconnected (for an 18 bit backplane) or ONLY
connected to each other (for a 22 bit backplane). If they
are unconnected, installing connections should convert to
a 22 bit backplane and you M8186 should be able to
access as much memory as you are able to place in the
backplane (up to 4 MB of course). At one point, a VT103
backplane was upgraded to 22 bits and a 4 MB memory
board installed.
>Also, my CPU card is a rev. D so it can do 22bit addressing. I'd like (if possible) to run 22bits, since this would allow
>me at a later time to put in a 11/73 cpu that would give me more flexibility in what OS's i can install on the machine.
>
>I'll have to check if the backplane is wired for 22bits or not. I seem to remeber the standard qbuses had the W1-W4 pins (?)
>that you could wirewrap to change from 18to22 (i'm assuming that this operation propagated the BDAL17-20 from slot 1 to the other slots) but this backplane has nothing like that.
>I'm planning on checking it with an ohmmeter, and it should be very obvious if these signals are present across slots.
>
>The backplane is a PCB style, but it does have std. wire wrap pins sticking out from the PCB. If the BDAL17-20's are not present across slots, can I just simply extend them thru by wirewrapping?
>
>
Probably. For the VT103, there were no pins, just the
solder bumps. That was sufficient to attach the required
wires. Note that all of the ABs must be connected, not
just the ABs on the left side of the backplane. For the
VT103 with a 4 slot ABAB backplane, that meant eight
connections per each of the four wires to connect the
BDAL17-20 together (each to themselves of course).
>If anyone can shed any light on this backplane, it would be greatly appreciated.
>
>thanks in advance for any replies.
>
>--
>alex
>
If you have any more questions and you answer the
questions, it may be possible to help some more.
Jerome Fine
Some of the items I've acquired lately have come in original boxes:
* Tandy Color Computer 3
* Tandy CM-8 Monitor for Color Computer 3
* Tandy CCR-81 Cassette Recorder
* Star Micronics Gemini 10X Printer
* Kensington System Saver for Apple IIe
* HP 82240B IR Printer (for HP 48 calculator family)
Most of the boxes aren't in great shape, box collecting doesn't interest me, and I don't want them taking up my space. Is anybody interested in any of them before I throw them out? I'm in southern California, so they could be picked up near Riverside (weekends) or Irvine (weekdays) if desired.
--
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/
I have an HP IIISi printer. It was working fine. Then it sat idle for
quite a while (some small number of years, I think); then it was moved
(the movers picked it, and a bunch of other stuff, up and held it for a
few months before bringing it to the new place).
Now, the printer doesn't work. I turn it on and the front panel does a
brief lamp-test (each lamp in turn turns on briefly), the display says
"05 SELF TEST", then "SWITCHING TO PS", then "55 SERVICE" with the 55
flashing.
I did a little noodling around and found hints that this indicates some
kind of internal communication failure - and, indeed, I don't hear the
brief motor-and-solenoid noises that (admittedly hazy) memory says
normally accompany selftest; after the clunk of the power switch as I
turn it on, the next sound is the clunk of the power switch as I turn
it off in exasperation at seeing "55 SERVICE" again. (It's possible
there are fan noises, but there are enough fans in the room that it
would be had to tell unless they're fairly noisy fans.)
I found a PDF on www.lbrty.com which purports to be a IIISi/4Si manual,
probably a service manual from the context and the "sm" in the
filename. But every page just gives me "**** ERROR: Unable to process
JPXDecode data. Page will be missing data." and an empty page. I am
looking into other possible ways to get its content, but, in the
meantime, does anyone have anything to suggest? I'm not afraid of
voltmeters and soldering irons, but my test equipment is limited - I
don't, for example, have a 'scope or logic analyzer I can use here. I
do have a pretty good multimeter - a Fluke 87 - though.
I took the printer apart to some degree. I've had it apart before;
there was a power filtering cap that went and arced enough to eat away
some of the PC board under it. I cleaned it up and replaced it and
it's worked fine ever since...until now.
Any thoughts, anyone?
/~\ The ASCII Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents-montreal.org
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
The gradual garage clearance continues.
Mac Plus keyboard (with integral numeric keypad, no cable)
http://www.ebay.co.uk/itm/271305613659
Original Macintosh numeric keypad
http://www.ebay.co.uk/itm/271305622663
No packaging or anything, I'm afraid. They could do with a good clean, as well.
Posted because Jules just recently mentioned that he was looking for one.
I've put them up with a starting bid of a tenner. I hope that does not
seem too much like price-gouging, but I was not willing to go for my
usual 1p approach with some genuine rare (not "ebay rare") kit.
Apologies for the spam!
--
Liam Proven ? Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884
>Mark Martin wrote:
>>On Sat, Oct 19, 2013 at 8:48 PM, Kevin Schoedel <schoedel at kw.igs.net> wrote:
>
>>I think I have removed everything that is gone or firmly spoken for (let me
>>know if I've missed something). Some items have pending expressions of
>>interest.
>>
>[Long list of stuff omitted]
>
>If anyone is making a trip from Chicagoland or nearby major cities, will
>you please contact me off list. I'd like to see if we can make arrangements
>for a joint shopping trip or purchase. Thanks in advance.
>
>Regards,
>Mark
>
I have also been in touch with Kevin, but he has not sent me an update.
However, if I do get there, I am coming from the opposite direction -
>from Toronto.
It would be appreciated if you could advise me as to which items,
if any, you have arranged to pick up from Kevin so that I might
determine what may be still available.
Jerome Fine
Maybe this isn't the perfect match in context for the list, but I'm guessing its as good as any.
I've had a classic asteroids arcade cabinet since I was about 16 (1985). We ran it off and on for a few decades, and then it sat in the garage for a while. Last time I turned it on, the vector screen initially displayed only a center dot, then a line, then the full screen after a while of being on.
I wan't to bring it back up again.
What precautions or efforts should I take to get the machine back up? I don't want to damage it. The only repair made so far was a replacement of the lit player 2 button.
Kevin
Hi, folks,
I did some preliminary googling and didn't find any obvious hits for
this terminal. It has a metal shell, blue textured paint, a couple of
switches on the back for features, a DB25, and the older type of
modular power plug often seen on instruments - the short recessed oval
with 3 pins.
I plan to dust it off, check for loose things, then examine the PSU
before even thinking of powering it on.
If I had to guess, and I do, I'd expect it to be a glass TTY no
smarter, and probably a lot dumber than an ADM3. Anyone have any
facts about it? I'll know more when I get a chance to open it and
clean it, but I thought I'd ask.
Thanks!
-ethan
Good news, It now looks like our new 80286 Master/Slave S100 bus CPU board
works fine with not only our 4MG Static RAM board bit also the 1M RAM/ROM
board.
The problem I outlined below was due to the fact that I had jumpers wrong on
both the CPU and ROM/RAM boards. The 80286 works fine with both boards at
11MHz (with no wait states).
One of the reasons for "upgrading" the ROM/RAM board was to simplify the
"rats nest" of jumpers on the earlier boards for the diverse range of RAM &
RAM chips (including flash RAM) that board can use. The new RAM/ROM boards
should be here soon. If you have the older board, consider switching over
(it uses all the same chips/parts) . For new users it is a very useful
memory board.
One remaining bug I see with the 80286 board is that some older S100 Static
RAM boards (particularly those that use PALs, such as the Godbout 128K
static "RAM21" board or the BG Computers 256K Static RAM board), need a
patch. You need to bend out pin 2 of U56 and jumper it to pin 9 of U68 - the
bus controller. This seems to provide the early MWRITE status signal these
boards require. Interestingly this is also the case for our 8088 CPU board
(jumper K5,2-3), but not the 8086 board.
I have written up a detailed account for the 80286 boards construction
here:-
http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2
0Board.htm
And a description of the RAM/ROM board here.
http://www.s100computers.com/My%20System%20Pages/RAM
<http://www.s100computers.com/My%20System%20Pages/RAM&ROM%20Board/RAM&PROM%2
0Board.htm> &ROM%20Board/RAM&PROM%20Board.htm
Enjoy
John
From: John Monahan [mailto:monahan at vitasoft.org]
Sent: Sunday, October 20, 2013 10:53 AM
To: 'n8vem-s100 at googlegroups.com'
Cc: 'cctalk at classiccmp.org'; Andrew Lynch (andrew-lynch at sbcglobal.net)
Subject: S-100 80286 CPU board write-up
Hi everybody. I have just written up construction notes on this 80286 CPU
board.
Please see here:- for details:-
http://www.s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%2
0Board.htm
Unfortunately there are some strange issues with the board running with RAM
boards other than our 4MG Static RAM board
(described here:-)
http://www.s100computers.com/My%20System%20Pages/RAM%20Board/4MG%20RAM%20Boa
rd.htm
With that RAM board, the 80286 is rock solid at 11MHz (no I/O or ROM wait
states required).
Please see the bottom of the page for details.
I am traveling all of next week but will explore further when I get back.
Sorry about the bad news
John
I have a cable which I *believe* is for a HP 95. It has a DE-9 female
connector on one end and some proprietary looking connector on the other
side, which seems to have 4 pins and is also female. If anyone wants a photo
I can arrange to take one and send it to you.
If anyone wants it they can have it for free as long as they pay the cost of
shipping.
I am in Manchester (UK).
Regards
Rob
Have the user / assembly manuals for the MicroAce (unlicensed Sinclair
ZX80 clone) been archived anywhere? I did a quick search and I didn't
find anything. If not, is anyone chomping at the bit to have it archived?
I just picked up an interesting set of hardware that I thought was a
Sinclair ZX80 plus an empty MicroAce case, but which turns out to be a
MicroAce Issue 1 PCB installed in a Z80 case (with ZX80 keyboard overlay
fitted, plus the 8K ROM upgrade overlay taped on top). Came in the
original MicroAce box with documentation, sales receipt and a photocopy
of "MicroAce / ZX80 Video Secrets Revealed!" (which I also don't see
archived anywhere)
If this isn't archived anywhere, I'll see what I can do to get this
scanned at some point.
Also -- as an aside, I'm faced with a dilemma: do I restore this thing
back to a MicroAce, or leave it as the frankenstein it is? I have the
original MicroAce overlay (never used -- still has the protective
backing on the sticky side) but it's pretty clear that whoever put this
together assembled it as a ZX80 from day one, for some reason. The
MicroAce is considerably more rare than the ZX80 (which is already
pretty uncommon)... but then again it works fine as is. (Really the
only irreversable step here would be peeling off the ZX80 overlay and
sticking the MicroAce one on.)
- Josh
On Sat, Oct 19, 2013 at 8:48 PM, Kevin Schoedel <schoedel at kw.igs.net> wrote:
> I think I have removed everything that is gone or firmly spoken for (let me
> know if I've missed something). Some items have pending expressions of
> interest.
>
[Long list of stuff omitted]
If anyone is making a trip from Chicagoland or nearby major cities, will
you please contact me off list. I'd like to see if we can make arrangements
for a joint shopping trip or purchase. Thanks in advance.
Regards,
Mark
The DECbrouter I got recently has a little fan attached to the side. This
prevents me putting the DECbrouter into a DEChub because the fan assembly
fouls the metallic leaves on the DEChub. It seems that the DECbrouter is
designed to allow use with a DEChub, but in my case it won't fit.
Is there a different DEChub that does not have the metallic leaves at one
end of each slot?
How critical is the extra fan? The fan is pretty small and I could remove
the extra fan assembly.
Regards
Rob
----- Original Message -----
> Date: Fri, 25 Oct 2013 07:01:16 -0400
> From: "Jerome H. Fine" <jhfinedp3k at compsys.to>
>
> >Mark Martin wrote:
>>
>>If anyone is making a trip from Chicagoland or nearby major cities, will
>>you please contact me off list. I'd like to see if we can make
>>arrangements
>>for a joint shopping trip or purchase. Thanks in advance.
>>
>>Regards,
>>Mark
@Mark: AFAIK at least two people from Chicagoland are either coming up or
have made arrangements; hope you can get together.
> I have also been in touch with Kevin, but he has not sent me an update.
>
> However, if I do get there, I am coming from the opposite direction -
> from Toronto.
>
> Jerome Fine
>
Hi Jerome, (haven't seen you in many years; how are ya!)
As Kevin himself said, it's quite a job inventorying his treasures and
staying on top of what's been taken and what's spoken for and by whom,
so be patient ;-)
I picked up a few items last week but will probably be going back for a few
more, so if you make arrangements with Kevin for anything I'd be happy to
pick it up and bring it back for you if it's not too large (but then you'd
miss the tour ;-)
mike
I decided to take my life and my capacitors in my hands and try to
power on the somewhat grubby old Mac+ I was given recently.
I hooked up a keyboard and mouse and plugged it in.
The floppy drive makes a very short whine, the Mac emits a fairly
basic monophonic happy-Mac beep, and sits there humming quietly at me.
However, the screen does not light up.
It /sounds/ like the logic board is initialising OK but the screen isn't.
Is there much troubleshooting that someone fairly electronically
incompetent can do to one of these?
--
Liam Proven ? Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884
Hi
I'm looking for a way to rackmount my BA23 (and BA11) boxes in my H960
rack. Most modern solutions is rather unsatisfactory (some doesn't fit,
others are crazy expensive).
So, does anyone have a stack of these:
http://www.employees.org/~kirk/images/ba23ltslide.jpg
Hopefully in Europe, but shipping from USA might be worth it. I need
about six pairs.
Regards,
Pontus.
I don't know this company, but I came across this page, and it is the
cheapest I have ever seen for this old memory!
http://memorydealers.com/memory.html?cat=2670
Cindy Croxton
_____
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Checked by AVG - www.avg.com
Version: 2014.0.4158 / Virus Database: 3614/6776 - Release Date: 10/23/13
Hi,
I recently aquired an old Netcom system and I'd like to find out a bit more info about this backplane.
It's an 11/23 system (based on CPU) . It has some standard DEC
cards in it (M8186 CPU, DLV11, BDV11 bootstrap board ) as well as a thrid party 256Kb memory board and an MXV22 floppy controller.
Apparently the system ran RT-11 from floppies a few years back before it was put in storage.
I have read through the PUPS archives, esp. a post from Michael Sokolov back in 98, where he describes
the different types of QBus'es. Q/Q, Q/CD etc. Have also read through the info on hampage.hu and various other sites that host PDP11 related info,
but am still unsure about this particular beast.
It looks like the backplane that I have (according to the archives and some documents written at SLAC in late 70's)
is a serpentine or sinusoidal type configuration. The SLAC documents actually refer to the Netcom backplane but they
describe it a simple serpentine type.
A diagram on my cardcage describes it as follows:
A B C D
------------>
<-----------
------------->
<------------
There is also a blurb about slot 2/CD being wired differently. Two slots on the diagram are pre-printed for RL controllers. I can't rembeber the exact wording, since I don't have the computer in front of me.
It gather that I insert the CPU in 1AB, then rather than putting the next card in 2AB, I would place it in 1CD. Next would be 2CD and so on ,snaking down the line. Is this correct? While this is all fine for dual cards, but how does this configuration
handle quad cards? I'm guessing that it has to do something with that 'blurb', but that would mean that I can only have one quad card installed, and it would be right towards the begining of the bus. The BDV11 should
be the last card in the chain from what I can remember.
Also, my CPU card is a rev. D so it can do 22bit addressing. I'd like (if possible) to run 22bits, since this would allow
me at a later time to put in a 11/73 cpu that would give me more flexibility in what OS's i can install on the machine.
I'll have to check if the backplane is wired for 22bits or not. I seem to remeber the standard qbuses had the W1-W4 pins (?)
that you could wirewrap to change from 18to22 (i'm assuming that this operation propagated the BDAL17-20 from slot 1 to the other slots) but this backplane has nothing like that.
I'm planning on checking it with an ohmmeter, and it should be very obvious if these signals are present across slots.
The backplane is a PCB style, but it does have std. wire wrap pins sticking out from the PCB. If the BDAL17-20's are not present across slots, can I just simply extend them thru by wirewrapping?
If anyone can shed any light on this backplane, it would be greatly appreciated.
thanks in advance for any replies.
--
alex
All,
Following the recent trend of repentant hoarders, it's time for me to slim the herd. In particular I need to recover the use of my second bedroom. So I need to find happy homes for the following:
IBM System/36 5362 (US Model)
IBM System/36 5363
IBM AS/400 9404 (CISC)
IBM RS/6000 7025-F40
IBM RS/6000 7015-98B
IBM RS/6000 7015-999
IBM RS/6000 43p (several)
HP Apollo 9000 Model 400 (68040 upgrade)
I may also have a number of smaller Sun, HP and IBM UNIX boxer available. None of these machines have been run for between 10-15 years. They may require attention, which since I've not touched them in quite some time. Better they go to you, eh? These would all be for pickup in the from post code GU51 2UD. I'm not looking for any financial exchange, but I would direct you to donate generously to The National Museum of Computing (www.tnmoc.org).
Regards,
Colin
All,?
I have a Compaq Portable ("luggable"), revived from damp storage, and I'm trying to work through some of the troubles it has.
First one I'm trying to sort involves the video card. It has the original CGA card in, with the internal output hooked to the internal screen. It has a DB-9 connector for an external C/EGA screen and also NTSC composite output on an RCA plug.
I've not been able to test the external 9-pin because I don't have a screen, but I'm going to guess it's working because the internal screen display is good.
The composite out is terrible. On several television sets it jumps, losing horizontal sync. The image supposed to be on screen is legible, just.
Anyone have experience with this issue (a particular cap, a chip particularly prone to failure) or the schematics for the board? It's tough to trace, being a 3 layer sandwich.
If anyone has the schematic for the vdu driver board also, I need to work on that too, it's suffering from dry capacitors.
Thanks
Phil Andrews
Sent from my Samsung Galaxy S?4
Hi,
Anyone have a Data Translation DT2766 manual? It's a qbus 4 channel DAC
card.
I googled everything I could think of and can't find a thing. I could
use a pdf (or the real thing, which ever works). I'd be happy to scan a
physical copy and return it.
thanks!
-brad
I see all sorts of stuff for collecting/trading around here, but not a lot of IBM equipment.
Anyone do much hobbying of IBM stuff, especially S/360, S/370, and S/390?
Anyone know where I could find some interesting artifacts, like a 1052? Or other similar-vintage stuff?
Thanks in advance!
-Ben
I have a gent needs old Mac LCII, 1994 or older, complete and working with
color monitor, kbd, mouse, etc.
They also use Mac SE and other old Macs. If you have some available for
sale, please contact me.
Needed in Atlanta, GA area. Need to NOT be discolored.
Cindy Croxton
Electronics Plus
1613 Water Street
Kerrville, TX 78028
(830)792-3400 phone (830)792-3404 fax
AOL IM elcpls
_____
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Checked by AVG - www.avg.com
Version: 2014.0.4158 / Virus Database: 3614/6774 - Release Date: 10/23/13
I was working as a VMS administrator up until 2 years ago.? The healthcare business still has some VMS systems in use today.? The one I took care of ran the GE software for a well known physicians group in San Francisco.? We called it IDX but it had been through many names as GE tried to make it seem modern.? Based on one of the MUMPS variants.? A horrible mess that was susceptible to unexplained problems at any moment.? Very expensive to run since GE charged a lot for support and it needed a lot of it.??? Two years ago, the whole IT departement got outsourced and the overseas staff, India, was supposed to take over.? After a couple months of that I quit in disgust.? I do know one guy still doing VMS at an HMO in Sacramento.? That'll go on for a couple more years.? My Alpha XP900 is sitting unused in my garage.
> Message: 13
> Date: Tue, 22 Oct 2013 08:28:55 -0400
> From: Brad Parker <brad at heeltoe.com>
> To: cctalk at classiccmp.org
> Subject: Data Translation DT2766 manual?
> Message-ID: <52666F87.7050403 at heeltoe.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> Hi,
> Anyone have a Data Translation DT2766 manual?? It's a
> qbus 4 channel DAC
> card.
> I googled everything I could think of and can't find a
> thing.? I could
> use a pdf (or the real thing, which ever works).? I'd
> be happy to scan a
> physical copy and return it.
> thanks!
> -brad
While you wait for proper info... apologies if you've already considered and rejected this, or if it's a
silly idea...
Were you after software or hardware info or both? Either way...
I don't know the DT2766 itself, but I found a DT2766 picture that looked like 4 simple D2As on a card.
Based on that, and on what I remember from a few decades ago, have you looked around for DEC
documentation on the AAV11C? There ought to be some in various realtime-related documents which
with luck would be available on Bitsavers and elsewhere, but I couldn't quickly find anything useful just
now.
The AAV11C was a simple PIO dual height Qbus 4channel DAC card (and before it, there was the
AAV11A quad height card).
If you're lucky you *might* get a pleasant surprise from the AAV11C. Or it might be completely different
>from a DT2766, in which case, apologies.
My hardcopy of DEC's 1985 Microcomputer Products Handbook has five pages on the AAV11C in
chapter 33, covering addressing, configuration, but not connector pinout. Chapter 33 references the
LSI11 Analog System Users Guide, an AAV11C Field Maintenance Print Set, and the AAV11 Diagnostic
Documentation Kit. Manx says the Analog System Users Guide isn't online, didn't check the others..
There was also an AAV11D which really was a rather different beast, with upmarket features like DMA.
Best of luck
John Wallace
As folks may have read about my recent VT103 rescue....
Well, regarding the disks I want to end up imaging.... the 4 disk set
of RT is on Wabash diskettes ! (All the other 8" diskettes are almost
all Digital brand, but those 4 are Wabash).
The oxide looks ok, but a scuff near the hub area with my fingernail
was able to remove a tiny amount of material... I think when I get to
imaging those 4 I'm only going to have a shot or two each.
Any suggestion (besides toss the 4 diskettes right after imaging them)
?
Also, anyone know if the 8" drives in the RX02 itself use a standard
interface at all that could be connected to something like a Kryoflux ?
-- Curt
FYI, a new Mark 8 now exists - mine. I built it using wire wrap on 0.10
inch perf-board, with point to point wiring for power. I used 0.10
Molex sockets with standard header pins for a motherboard (they are not
as long and sturdy as one might like, but, oh well). Works fine.
In the process, I captured the schematics with KiCAD, and then routed
some PCB boards. Some of the PCB boards have been manufactured, and are
awaiting construction. The others have been ordered.
Also, in the process, I am testing a concept of replacing the Signetics
8263 and 8267 chips with programmed GALs (I had enough real ones to
build my prototype and build out my PCBs).
You might be able to see them in my Facebook album, I think, though my
Facebook page is generally not publicly viewable.
Try these links:
Mark 8 (my wire wrap "prototype"):
https://www.facebook.com/media/set/?set=a.562945557100074.1073741829.100001…
PCBs:
https://www.facebook.com/media/set/?set=a.562952890432674.1073741830.100001…
BTW, is there any interest out there in:
1) Sets of PCBS? (They would be around $500 per set, I guess - I would
not WANT to make and sell them in any quantity!).
2) GALs on little boards to substitute for the 8263/8267?
JRJ
Jeez you guys.? I was just stating my own personal experience.? Not wanting to startup a whole folderall about how VMS has been treated by the various parties involved.? If I wanted that I could just go and look at comp.os.vms, where you can review the whole history of DEC/Compaq/HP and VMS.? Let's not replay it all again.? Please.