Dear list, I'm currently restoring a PDP-11/70 system and need the
following boards to complete the CPU:
FP11-C slots:
M8127
M8128
M8129
Cache slots:
M8142
M8143
M8144
M8145
Any help finding these is appreciated. Thanks.
Hi guys-
Anyone on here have any experience using an IBM 3483 terminal with an LCD? I have an IBM 15" LCD I am hooking up to it, but parts of the image are below and above the viewable area of the display, and the characters look all garbled or like they're missing some lines. Auto-adjust makes it all visible for a short second, and then it pops back to the way it was.
I'd seen at least one other mention of this on the internet, but was wondering if anyone knew of any specific LCD's that are known to work with the 3483.
Thanks in advance!
-Ben
Have some original Emulex manuals. Need space do people want them or trash?
tc0551001 TC05 controller manual. I have Rev C, bitsavers has F
pd9951002 I have Rev A Bitsavers site has rev D
px9951902 Diagnostic distribution kit I have Rev E and H
sc0351001 SC03/B1 technical manual. Bitsavers doesn't have
sc0251001 SC02/A RP02/03 manual Rev H Bitsavers doesn't have
I'll scan the SC03/B1 and SC02/A manuals, but does anyone want the rest?
C
On 11/81/21,. Andrew Warkentin via cctalk <cctalk at classiccomp.org> wrote:
>> What happened? Looking back at my emails, the list was operating normally
>> until September 3. Then it just stopped. There were normal discussions
>> going on. There was no flood of spam. As far as I can tell, nothing
occured
>> that would trigger a rage quit.
>>
>> Is the software and documentation that was on the site at least archived
>> elsewhere? Has anybody downloaded it and can maybe upload to archive.org?
>>
>> Mike
>>
> I downloaded some of the software and documentation from there a long
> time ago and still have it, although I didn't actually scrape the
> entire site. I can upload what I've got to archive.org.
>
> The disk image kit of NOS 2.8.7 with CYBIS has been mirrored at
> <https://codex.sjzoppi.com/doku.php?id=utilities:start> and most of
> the documentation for it is available from the Wayback Machine at
> <
http://web.archive.org/web/20210421202420/http://www.control-data.info/Cybi…
>
I have a working version of NOS 2.8.1, but I would like to be able to add
software that is not included as part of the system that I downloaded from
controlfreaks.org about 18 months ago. An example might be the ALGOL68
compiler. (I stress 'might be', as I haven't checked if that is on my
system already. I just know there is 'some good stuff' that I want and
which I don't have.)
I have had a look on archive.org, but I can't find anything that looks like
CDC NOS software tapes. A big part of my difficulty is likely to be that I
don't have a list of what was available on controlfreaks.org in order to be
able to do a detailed search. I did search archive.org for controlfreaks.org,
but all I get is
Controlfreaks.orgAuthorized Users Only
This site is for the research into historic systems and software made by
Control Data Corporation. If you think you can contribute, email to
ControlfreaksAdmin
<https://web.archive.org/web/20210421192919/mailto:thunter0512 at gmail.com> to
request a username/password for access to this site.
All the content is over in the TWiki
<https://web.archive.org/web/20210421192919/http://www.controlfreaks.org/twi…>
.
When I click on the TWiki link, I get
{ScriptUrlPath}/view/TWiki/TWikiRegistration
which is not much use.
Does anyone have a list of the CDC software that was available from
controlfreaks.org?
Cheers
Peter Allan
Thank you all for your responses and the leads you have given,??Responses to some of your questions and some more questions:?"Have you checked/measured whether they're actually faulty?"?Yes I have, in the picture I have provided on the bottom there are the ends of 3 transistor leads. This was one that fell off as I removed the card and by far the worst corroded, so despite the fact that the rest still work. I need to replace this one.?"?I would suspect that these transistors are pre-drivers for the power transistors and may not be super critical to get an exact replacement."?Would an NPN or PNP with the same HFE suffice, or do I need to know more? Forgive me but I am a complete idiot when it comes to this kind of circuit design and their tolerances.?"Did you get manuals with the printer?? If so it should have ALDs (schematics)."Unfortunately not, and nor can I find any online.?"The 3286 printers and 3277 terminals where infamous for intermittent problems"Excellent, glad I bought something that will provide the true IBM experience.?Thank you,?Al?
Al -
The Texas Instruments (TI) 139 is likely a 2N139 PNP (BJT) transistor,
capable of high speed switching (in that era).
The 2N139 was originally an RCA transistor (tall cylinder) found in RCA and GE transistor radios (455 kHz IF section).
The TI versions were low profile metal case, TO-33 case (8.5 to 9.5mm diameter)
greg
==
From: Al <alsilisk at icloud.com>
To: cctalk at classiccmp.org
Subject: IBM transistor replacements
Dear all,
A while ago I received an IBM 3286 printer, annoyingly some of the transistors in the printer section have been corroded.
What I am having trouble with is reading the part codes and finding a modern equivalent of them.
One has a Ti logo and two sets of numbers (attached). Does anybody know which numbers are the part numbers and if they are IBM house numbered?
Photos of the Ti transistors and card assembly: https://drive.google.com/drive/folders/1JTnsWS4A8NrYJNFsqK2ejOeqqJNjoF1w?us…
Thanks in advance,
Al
Dear all,
A while ago I received an IBM 3286 printer, annoyingly some of the transistors in the printer section have been corroded.
What I am having trouble with is reading the part codes and finding a modern equivalent of them.
There are two types.
One has a Ti logo and two sets of numbers (attached). Does anybody know which numbers are the part numbers and if they are IBM house numbered?
Photos of the Ti transistors and card assembly: https://drive.google.com/drive/folders/1JTnsWS4A8NrYJNFsqK2ejOeqqJNjoF1w?us…
The other is an IBM transistor with what appears to be a 3 digit part code; for which I have been pointed to a list of house numbering and equivalents on the 1401 website. I was told the list is much older and I fear it might be out of date. However there is an entry for the part codes on my IBM transistors.
Should I trust the list for replacements?
http://ibm-1401.info/BobEricksonIBM-Transistor-Substitution.html
Thanks in advance,
Al
So, with the help of you here, I was able to create OS/8 LINCtapes and to
run SerialDisk. Everything runs very fine.
Now comes the next thing: I want to have K12MIT, and it is no problem to
compile or load the program.
*But*: When I start K12MIT I don't get the prompt. I see the welcome
message, and it correctly identifies the machine as a PDP-12, but that's
it. As I've found out it apparently overwrites its code, the processor is
looping around address 3600-3620. Examining the memory reveals that the
code at 3600 has been overwritten with junk. So it's clear that it won't
run anymore. What happens? Was anyone else able to run K12MIT on a PDP-12?
BTW the same binary runs fine on a PDP-8, be it a real machine or SIMH.
Christian
