RE: HP vintage boards being sold as scrap

2019-09-27 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jay Jaeger via 
cctalk
Sent: Thursday, September 26, 2019 6:40 PM
To: cctalk@classiccmp.org
Subject: Re: HP vintage boards being sold as scrap

...
> There is a stack of IO interface boards, including HSTs, for the HP 2100/1000 
> series there.
> 
> Lower-right stack in this pic, 7 boards, boards have one red and one grey 
> handle:
>   https://i.ebayimg.com/images/g/n08AAOSwjY5dg5Kd/s-l1600.jpg
> 
> "HS Terminal" is discernible on one of them, and the one on top looks to be 
> an HS Terminal as well.
> Can't be certain about the others but they have the same size IO connector, 
> they may all be HSTs.
> 
> HSTs are the basic RS232 & current loop, async serial-line interface boards, 
> 12531D, used for the console and such in the 2100/1000 series,
> going back to the early machines of the series.
> 
> (HS is 'High-Speed', but that's relative to the late-60s, billed for up to 
> 2400bps, but it is possible to operate them at higher speeds).
> 
> I'd buy one for, say 60$, if someone picks up the bunch and wants to flog one.
>  
> 

I would be in that same camp, assuming one of these would also work in a
2112B ("M Series") machine.

JRJ

-

They are readily available, individually, on eBay.  See "HP12531".
There are currently two listed at reasonable prices, plus reasonable shipping.

For reference, this:  http://www.hpmuseum.net/document.php?catfile=236

You probably want the HP 12531D.  Both of the current eBay listings are the "D".

I believe that the HP 12531C is what is visible on 
http://www.hpmuseum.net/display_item.php?hw=111 

paul



RE: HP vintage boards being sold as scrap

2019-09-25 Thread Paul Birkel via cctalk
-Original Message-
From: Guy Dunphy [mailto:gu...@optusnet.com.au] 
Sent: Wednesday, September 25, 2019 6:07 AM
To: Paul Birkel; General Discussion: On-Topic and Off-Topic Posts
Subject: RE: HP vintage boards being sold as scrap

At 02:29 AM 25/09/2019 -0400, you wrote:

>I contacted the seller and was able to work out a very reasonable deal to
>purchase a selected subset for my future needs.

...
How sensibly were they padded for shipping? It had seemed like the seller
refused
to treat them carefully.



Mine were packed sensibly. He knew that I intended to put them into service.

I've had sellers do pretty silly things to even single PCBs despite my
asking otherwise.
No problems in this case.  So I'm a satisfied customer.

paul




RE: HP vintage boards being sold as scrap

2019-09-25 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy Dunphy
via cctalk
Sent: Wednesday, September 25, 2019 1:57 AM
To: Electronics Plus; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: HP vintage boards being sold as scrap

...
This is going to be as frustrating as that other guy selling a huge box of
HP cards for gold, for $600.
https://www.ebay.com/itm/60-lbs-vintage-1970s-HP-interface-boards-gold-yello
w-fingers-for-scrap-recovery/383039137321
Huh, didn't sell yet, what a surprise. And he's dropped the price a whole
$50. Must have agonized over that.

Guy

-

I contacted the seller and was able to work out a very reasonable deal to
purchase a selected subset for my future needs.

You, or others, might consider doing the same if you have a specific
interest.  (Rather than a general gripe :-}.)

paul



DEC Scalps

2019-08-22 Thread Paul Birkel via cctalk
https://www.ebay.com/itm/312738923353

 

Sez: 

 

"Older DEC PDP console face-plates DEC PDP 11/55 rare, PDP 8-straight 8
'glass'rare,

PDP 8/L, PDP 8/I, DEC TU58 status/diag. Panel . All in goodshape. $1000 for
the lot or $200 apiece. "

 

-



RE: Current MANX location

2019-08-21 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Wednesday, August 21, 2019 10:46 AM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Current MANX location

...
  KE11-B Field Maintenance Print Set
  http://manx-docs.org/details.php/1,9361

Both listed as not online, but they are: the KE11-A is on Bitsavers,
and the KE11-B I also just found (IIRC, on one of the collections they
list as indexed).

Noel

-

Please share a pointer to the location of that document, Noel.  Thank you.

paul



RE: GW-DEC-1: A New DEC Prototyping Board

2019-08-15 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Thursday, August 15, 2019 12:45 PM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: GW-DEC-1: A New DEC Prototyping Board

> From: Paul Birkel

> But which bus?  There are three ...

So I'm clearly not very awake this morning. I can only think of two major
quad-width DEC standard slots - SPC (UNIBUS) and dual QBUS. What's the third
- PMI? (MUD is hex, as is Fastbus.) Or OMNIBUS, if we're not restricted to
PDP-11's?

Noel

-

OMNIBUS, yes.  Use case: http://tronola.com/html/ram_for_pdp-8e.html

-



RE: GW-DEC-1: A New DEC Prototyping Board

2019-08-15 Thread Paul Birkel via cctalk
-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of emanuel 
stiebler via cctech
Sent: Thursday, August 15, 2019 4:23 AM
To: systems_glitch; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: GW-DEC-1: A New DEC Prototyping Board

On 2019-08-15 02:13, systems_glitch via cctalk wrote:
> Connor Krukosky and I have been working on laying out a new quad-height DEC
> protoboard, which can also be sheared down into a dual-height board. Full
> announce on the VC Forums:
> 
> http://www.vcfed.org/forum/showthread.php?71177-GW-DEC-1-A-New-Quad-Height-DEC-Prototyping-Board=582892#post582892

Was always hoping somebody would do something like that, but with the
bus interface already on it ...

-

But which bus?  There are three ...

-



RE: DEC VT20 boot device

2019-08-11 Thread Paul Birkel via cctalk
>-Original Message-
>From: Jay Jaeger [mailto:cu...@charter.net] 
>Sent: Saturday, August 10, 2019 11:02 PM
>To: Paul Birkel; General Discussion: On-Topic Posts
>Subject: Re: DEC VT20 boot device
>
>On 8/10/2019 1:56 PM, Paul Birkel via cctech wrote:
>> The DEC VT20 terminal apparently included a PDP-11/05 with a direct mapped
>> character display and was intended for text editing and typesetting.  It
>> seems to have been followed by the VT21, and then VT71/VT72, all three based
>> on an LSI-11 (KD11-F).  There's a real lack of documentation about these
>> online, although the VT72 does have a print set.
>> 
>> Apparently the VT20 used the M792-YK as its bootstrap; the Field Guide is
>> silent regarding the boot device and M792 documentation stops earlier in the
>> series of variants.
>> ...
>> So . is the boot device in these systems the remote host via the serial
>> line?  What protocol would that have been?  Something native to Typeset-11
>> and DECset-11?
>> 
>> paul 
>
>I wonder if, maybe, it used the same protocol as the GT40, which also
>had a boot-over-serial line capability.
>
>JRJ

That's a promising lead!  The GT40/42 User's Guide (EK-GT40-0P-002), Section 
5.1 Communications Bootstrap/Read-Only Memory (ROM) describes a 256 word (GT40) 
and 512 word (GT42) ROM, however it appears that the bootstrap loader portion 
is intended to occupy 63 words which fits the M792 capacity (on the GT40 just 
the absolute addresses 15700-15776 (base 8)).

Section 5.1.1 Bootstrap Loader describes the packed-and-serialized 6-bit "byte" 
stream, including some nice diagrams.  Section 5.1.2 Character Encoding 
includes an illustrated example starting from a pictorialized 8-level paper 
tape.  Appendix D has an annotated (and unexpurgated) program listing of the 
full GT40 ROM, including the loader and Figure D-1 Communications Bootstrap 
Loader Flow Diagram.  Program comments suggest that a PDP-10 was expected as 
the host for a GT40.  I imagine that the same expectation would have applied 
for the earlier VT20?

Appendix E is similar, but for the "scrolling ROM - GT42" which appears to be a 
VT05 emulation  It includes more conventional loaders as well: RF11, RK11, 
RC11, RP11, TC11, TM11, and paper tape.  According to the program comments, 
"the fearsome power of the 11" is brought to bear :->.

Both loaders are credited to Jack Burness.

If I understand the listings correctly then in the smaller VT20 ROM, 
presumptively based on the same code, one would be expected to successfully 
fall off the end of the ROM into freshly loaded code that signals back to the 
host that a successful load has taken place.  In the GT40 with the larger ROM 
that acknowledgement ("SENDIT") is part of the ROM itself.

paul




DEC VT20 boot device

2019-08-11 Thread Paul Birkel via cctalk
The DEC VT20 terminal apparently included a PDP-11/05 with a direct mapped
character display and was intended for text editing and typesetting.  It
seems to have been followed by the VT21, and then VT71/VT72, all three based
on an LSI-11 (KD11-F).  There's a real lack of documentation about these
online, although the VT72 does have a print set.

 

Apparently the VT20 used the M792-YK as its bootstrap; the Field Guide is
silent regarding the boot device and M792 documentation stops earlier in the
series of variants.

 

According to the VT72 print set, it used the MRV11-VC (M9942-YC; described
in the Field Guide as a "bootstrap/diagnostic module") for its bootstrap but
is also silent regarding the boot device.  In interestingly, the Field Guide
also describes a MRV11-AA (M7942-TB) as a "M7942 with VT52 emulator, VT71
bootstrap".

 

For async. communications the VT20 used a DL11-B (M7800 (EIA)). the VT72 a
DLV11-F (M8028).

 

Looking in a DEC "Options and Modules" listing I see VT20 bundles including
Typeset-11 and DECset-11, and it appears that the VT20 could be configured
with two displays & serial lines in a single 11/05.

 

So . is the boot device in these systems the remote host via the serial
line?  What protocol would that have been?  Something native to Typeset-11
and DECset-11?

 

paul 



RE: Sci-fi and science fiction [was Re: Scanning question (Is destruction of old tech docs a moral crime?)]

2019-07-21 Thread Paul Birkel via cctalk
-Original Message-
From: U'll Be King of the Stars [mailto:ullbek...@andrewnesbit.org] 
Sent: Sunday, July 21, 2019 3:36 AM
To: Paul Birkel; General Discussion: On-Topic and Off-Topic Posts
Subject: Sci-fi and science fiction [was Re: Scanning question (Is destruction 
of old tech docs a moral crime?)]

On 21/07/2019 06:48, Paul Birkel via cctalk wrote:
> I'm reminded a bit of "A Canticle for Leibowitz"!

Thank you for the reference.

...

Please could you (Paul or anybody else on this list) recommend a forum 
or mailing list for fans of sci-fi or science fiction?   I'm sure there 
are many but I've no idea where to start.  I would be very grateful. 
Thank you!!

Andrew
-- 

Science Fiction and Fantasy Listserv 

https://listserv.loc.gov/cgi-bin/wa?A2=SF-LIT;869da1f3.1809

paul



RE: Scanning question (Is destruction of old tech docs a moral crime?)

2019-07-20 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Guy Dunphy
via cctalk
Sent: Saturday, July 20, 2019 11:00 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Scanning question (Is destruction of old tech docs a moral
crime?)

I'm posting a private email (anonymized) and my reply because it's a 
significant issue.


>{Note private reply}
>
>> When the scanning process involves destruction of the original work
>> ... But if it's a rare document, or even maybe so rare that it's the
>> last one, then destroying it now just to produce a digital copy
>> inadequate to the aims of cultural preservation - that's a crime.
>> One right up there with genocide
>
>While I agree that making a non-optimal digital copy in such cases, is,
>well, non-optimal (because for _many uses_, the basic information is still
>available, wheras for many important documents, not even that remains),
>there's no way it's "right up there with genocide" - and if you really
>think so, you definitely need to examine your sense of scale, because it's
>seriously defective.
>
>   [name removed]

I agree that when historical documents are lost without even any kind of
digital copy made, that's the worst.

However I was pretty careful to preceded that quoted paragraph with
conditionals.

Specifically referring to a case where someone has a rare work, that isn't
in danger of falling apart, and there's no good reason why they couldn't 
wait till better scanning methods became available, and they destroy it to
produce a crappy quality digital image. Thus ensuring there can never be
a high quality digital copy and the rare physical original is forever gone.
That's criminal. A high level crime against humankind. Where it's done in
bulk to entire collections, it _is_ the cultural equivalent of genocide.

I don't care if you disagree.
Could it be that you are upset because you do this (destroy docs), and don't
like to be accused of being a criminal?
I am sure that the future WON'T take your position on this. They are going
to be sooo pissed, that so many old works were destroyed and all they have
left is crappy quality horrible-looking two-tone scans.

This is _already_ the case with many electronics instrument manuals. There
are
so many people who think that the physical manuscript is unimportant, and
nothing
matters other than posting a minimally readable smallest-possible-file
online,
with the least effort and so it's OK to destroy the original for
convenience.

Private reply noted. Still going to repost on the list, as from anon.

Guy

-

If I may summarize/generalize, Guy, I think that your point is that there
are Technical Artifacts and there are Cultural Artifacts -- and the two sets
overlap to some degree.  Where the overlap lies is subject to great debate,
IMO.

Most of us probably wouldn't destroy a Cultural Artifact (e.g., Taliban
destruction of Buddha of Bamiyan statue) but many might destroy a Technical
Artifact in the belief that its overt information content defines its value,
and that one that value has been captured digitally the Technical Artifact
effectively lives on in that form.  The corpus is merely that ...

At what point do you believe that a "mere" Technical Artifact becomes a
Cultural one -- where the latter presumptively comes accompanied by a
Requirement to Preserve?

Being the "last known survivor" of a particular piece of hardcopy seems both
an inadequate basis for determination in general, and operationally it's a
pretty weak method since "last known" becomes dependent on a Registry of
sorts (and likely requires good provenance to preclude forgeries, else
expect a flood of ACTUAL TELETYPE REPORT OF APOLLO MOON LANDING ... :->).

In your perspective is Artistic Merit an important consideration in
determining Cultural value, and thus Requirement to Preserve?  How does one
judge that?

As much as I like hardcopy Technical Artifacts for various reasons, I have
difficulty with the concept that all hardcopy, even the very last known
original, is worth (in the ROI sense, to include proper archiving and
maintenance) preserving.

I'm reminded a bit of "A Canticle for Leibowitz"!

paul




RE: DEC Purchase Specifications, particularly 23-000A9-01

2019-07-17 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mark J.
Blair via cctalk
Sent: Tuesday, July 16, 2019 4:10 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: DEC Purchase Specifications, particularly 23-000A9-01

.

If 70ns access time parts are sufficient for the M9312's PROMs, then I may
design an emulation with a 5V compatible 28 series EEPROM. If they need to
be faster, then I may need to do something fancier. Or maybe I'll find the
original PROMs that I need and then get distracted and wander off. It may
well be easier to design a replacement for the entire M9312 card than trying
to emulate the individual 512x4 bipolar PROMs, but since when do I do
anything the easy way? I sure wouldn't be playing with 40 year old computers
if I was concerned with practicality and ease of use!

-

>From some notes (origin misplaced!) you'll need a typical access time of
40ns from address, or 20ns from /CS:


DEC boot PROMs on Unibus cards are small bipolar fusible-link PROMs

The A9 types are 82S131 (or MMI6306, 75S171, 27S13, 93448, etc)
16-pin DIL 512-words by 4-bit wide.
Pin spacing is 0.1", pin column pitch is 0.3".
Access times are typically 40ns from address, or 20ns from /CS.
 
   |U|
A6 | 116 | Vcc
A5 | 215 | A7
A4 | 314 | A8
A3 | 413 | /CS
A0 | 512 | D0
A1 | 611 | D1
A2 | 710 | D2
   Vss | 8 9 | D3
   |_|

The F1 types are 82S137 (or TI24S41, MMI6353, 74S573, 27S33, 93453, etc)
18-pin DIL 1024 words x 4-bit wide.
Pin spacing is 0.1", pin column pitch is 0.3".
Access times are typically 40ns from address, or 20ns from /CS.
 
   |U|
A6 | 118 | Vcc
A5 | 217 | A7
A4 | 316 | A8
A3 | 415 | A9
A0 | 514 | D0
A1 | 613 | D1
A2 | 712 | D2
  /CS1 | 811 | D3
   Vss | 910 | /CS2
   |_|

Note for all types: although the types listed are read-compatible,
each brand/type may use a very different programming algorithm.

Also note that these have tri-state outputs; other types (eg 27S13A)
have open-collector outputs.


And a potentially useful utility from Eric Smith:
https://www.brouhaha.com/~eric/software/m9312/

I have a vague recollection that someone kludged an 11/84 UBA (M8191) in the
manner that you describe but I can't find the reference at the moment.
Perhaps the memory of someone else will be jogged ...

-



RE: PDP 11/15

2019-06-19 Thread Paul Birkel via cctalk
> -Original Message-
> From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Paul
Koning via cctech
> Sent: Wednesday, June 19, 2019 1:59 PM
> To: Bob Smith; General Discussion: On-Topic and Off-Topic Posts
> Cc: Al Kossow
> Subject: Re: PDP 11/15
>
>...
> 11/15 as a designation for an LSI based machine doesn't ring any bells at
all.
>
>   paul

PDT-11/150?  It is based on an LSI-11 and if you squint at the designation a
bit ...

-



RE: What Makes a PDP-11/35 or 40 Tick?

2019-06-11 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Liam Proven 
>via cctalk
>Sent: Tuesday, June 11, 2019 7:06 AM
>To: Discussion: On-Topic and Off-Topic Posts
>Subject: What Makes a PDP-11/35 or 40 Tick?
>
>Found on Hackernews but by our very own Seth Morabito...
>
>«
>This is what makes a PDP-11/35 or PDP-11/40 tick. It turns out to be
>441 ICs. Impressive!
>»
>
>https://loomcom.com/blog/0044_what_makes_a_pdp_11_35_tick.html
>
>-- 
>Liam Proven - Profile: https://about.me/liamproven

I wonder what the unlisted 20 ICs are for, and what they are?

List totals 221; claim is 441 ...

-
paul



RE: HP9816 PAL16L8

2019-06-11 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis 
>via cctalk
>Sent: Tuesday, June 11, 2019 12:19 AM
>To: Tony Duell via cctalk
>Subject: Re: HP9816 PAL16L8
>
>On 6/10/19 8:44 PM, Tony Duell via cctalk wrote:
>
>> You can detect sequential logic in the PAL by :
>> 
>> For each combination of inputs :
>>Read the outputs
>>  Toggle an input (change from 0 to 1 and back again or vice versa)
>>  Compare the outputs to what they were before -- if they have
>> changed then there's a sequential function on that input
>>  Check the next input
>>   Check the next combination of inputs
>
>For purely combinatorial PLDs, see my blog entry on the subject over at
>vcfed.org; I did the work to clone a few PALs some years ago and
>documented the process.

http://www.vcfed.org/forum/entry.php?330-Cloning-a-PAL-HAL-Part-13 
http://www.vcfed.org/forum/entry.php?329-Cloning-a-HAL-PAL-Part-12-The-Trantor-T130B-memory-PAL
 
http://www.vcfed.org/forum/entry.php?328-Cloning-a-HAL-PAL-Part-11 
http://www.vcfed.org/forum/entry.php?327-Cloning-a-HAL-PAL-Part-10 
http://www.vcfed.org/forum/entry.php?326-Cloning-a-HAL-PAL-Part-9 
http://www.vcfed.org/forum/entry.php?325-Cloning-a-PAL-HAL-Part-8 
http://www.vcfed.org/forum/entry.php?321-Cloning-a-PAL-HAL-(Part-7) 
http://www.vcfed.org/forum/entry.php?320-Cloning-a-PAL-HAL-(Part-6) 
http://www.vcfed.org/forum/entry.php?319-Cloning-a-PAL-HAL-(Part-5) 
http://www.vcfed.org/forum/entry.php?318-Cloning-a-PAL-HAL-(Part-4) 
http://www.vcfed.org/forum/entry.php?316-Cloning-a-PAL-HAL-(Part-3) 
http://www.vcfed.org/forum/entry.php?315-Cloning-a-PAL-HAL-(Part-2) 
http://www.vcfed.org/forum/entry.php?314-Cloning-a-PAL-HAL-(Part-1) 

A nice read.  When does the article/book get self-published :->?

-
paul



RE: HP 1000 A900 ("Magic") Questions

2019-05-11 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Glen Slick 
>via cctech
>Sent: Friday, May 10, 2019 1:34 PM
>To: General Discussion: On-Topic Posts
>Subject: Re: HP 1000 A900 ("Magic") Questions
>
>On Fri, May 10, 2019 at 4:14 AM Paul Birkel via cctech
> wrote:
>>
>> Aficionados;
>>
>> I'm interested in acquiring an HP1000 A900, in any form-factor.
>> (http://www.hpmuseum.net/display_item.php?hw=594)



>Another hard part is the 1 memory frontplane. Maybe it wouldn't be
>too hard to build an equivalent PCB if the proper connectors can be
>acquired. They are 3-row 96-pin connectors. Maybe common DIN 41612
>connectors would work, I haven't looked at that closely.

I can confirm that DIN 41612 connectors should work fine, along with a 4-layer 
PCB.  HP doesn't seem to have gone "odd-ball" in that particular design choice. 
 I'd need to get someone to buzz out the connections to ensure that they are 
1:1 all the way across before designing a PCB to fit.



>At a minimum you need either a 12005 serial card or a 12040 serial mux
>for a console interface. Both of those are fairly common, although you
>might pay more for cables than the boards if you don't build cables
>yourself. There are several firmware versions for the 12040 mux. If
>you have a D mux you need need VCP firmware 4020 or higher on the
>12203A cache controller.

Cables, and those specialized HP connectors, are always a pain.  I would need 
to make up my own, given my budget, I expect.  I do have one or two possible 
spares from a 21MX I/O environment that probably could be repurposed assuming 
that the edge-connectors match up ... which they may not.  We'll see.  Thanks 
for the notes about the firmware version issue.

>As you also said you need a 12009 HPIB card for a storage interface.
>Running HPDrive on a PC to emulate disk and tape drives works well if
>you don't have any real HPIB disk and tape drives. I managed to pick
>up a 12016 SCSI card. Those are rare and expensive.

I'll bet!  Yes, I was assuming that HPDrive would be the way to proceed; it's 
good to get confirmation on that point.  Also the availability of a suitably 
configured RTE.

paul



HP 1000 A900 ("Magic") Questions

2019-05-10 Thread Paul Birkel via cctalk
Aficionados;

 

I'm interested in acquiring an HP1000 A900, in any form-factor.
(http://www.hpmuseum.net/display_item.php?hw=594)

 

Basic need would be a chassis/backplane/PS and minimal set of
CPU/memory/HPIB-controller/terminal-IO PCA, however I'd be interested in
simply acquiring a PCA-set and I'll work the chassis/backplane/PS
separately.  Even single PCAs would give me a helpful push forwards.

 

And I need to stick to my hobby (beer") budget.

 

I'm located in Maryland, USA, and pretty sure that the cost of overseas
shipping would be ghastly for a chassis.  But maybe not as bad for the tower
configuration as for the rack-mount.

 

If I understand correctly, the CPU consists of:

 

12201A A900 Sequencer Card

12202A A900 Data Path Card

12203A A900 Cache Controller

12204A A900 Memory Controller

12220A 768KB RAM  (Or I presume 12103D 1MB, 12221A 3 MB, or 12221B 8 MB.)

 

I imagine that I'll need to synthesize my own OTT "frontplane" for the
memory.

 

12009A HP-IB Controller 
12040D Asynchronous Multiplexer interface board

 

Thank you for your insights, and opportunities (I hope),

 

paul

(offlist at pbir...@gmail.com)

 



RE: Adding floppy drives to my PDP-11?

2019-04-14 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Glen Slick 
>via cctalk
>Sent: Sunday, April 14, 2019 2:48 AM
>To: General Discussion: On-Topic and Off-Topic Posts
>Subject: Re: Adding floppy drives to my PDP-11?
>
>On Sat, Apr 13, 2019 at 3:07 PM Charles via cctalk
> wrote:
>>
>> What about smaller drives (RX50? RX33?)... can those be interfaced to the
>> 11/23+ Qbus?
>
>Pick up a common as dirt M7555 RQDX3. If you don't have a BA23 with
>the built in distribution board for the M7555 RQDX3, then pick up an
>M9058 distribution board to break out the signals from the M7555
>RQDX3.
>
>For example, this one which is incorrectly listed as an M9056:
>https://www.ebay.com/itm/VINTAGE-DEC-Digital-Equipment-M9056-5016673-01B1-RQDX-Signal-Dist-Card-Board/153396701812

For more information and roll-your-own instructions, see: 
http://avitech.com.au/?page_id=645

Malcolm may still have PCBs available; shipping from Australia.

-



Control Console, but not PDP-10

2019-04-11 Thread Paul Birkel via cctalk
The PDP-10 Control Console sold for $3,650.00.  Amazing!

Now consider a DSKY.  Currently at $27,500.00.  Auction estimate: $60,000+

Great provenance!  “The DSKY that saved Apollo 14.”

https://www.rrauction.com/bidtracker_detail.cfm?IN=5222

-


Control Console, but not PDP-10

2019-04-11 Thread Paul Birkel via cctalk
The PDP-10 Control Console sold for $3,650.00.  Amazing!



Now consider a DSKY.  Currently at $27,500.00.  Auction estimate: $60,000+



Great provenance!  “The DSKY that saved Apollo 14.”



https://www.rrauction.com/bidtracker_detail.cfm?IN=5222



“Apollo 14 LM Simulator Computer Display and Keyboard (DSKY) from MIT
Instrumentation Laboratory”



Historically significant Apollo Guidance Computer Display and Keyboard
(DSKY) unit from the MIT Instrumentation Laboratory, used by Don Eyles and
Sam Drake to verify the software patch needed to avoid an abort during the
Apollo 14 lunar landing sequence. The data entry and display device measures
8″ x 8″ x 6.5″, and has 19 keys and an electroluminescent digital
display. The back of the unit retains its metal NASA parts tag which reads,
“Apollo G & N System, AGC DSKY Assy, Part No. 2003985-041, Serial No. RAY
26, NAS 9-497, Designed by M.I.T. Instrumentation Lab, Mfg. by Raytheon Co.,
" with yellow inspection stamps above. In fine condition.

Accompanied by a detailed letter of provenance from the present owner, who
was employed at the MIT Instrumentation Laboratory to design, build, and
maintain the CM and LM cockpit simulators. He retained the DSKY in 1978 when
the LM cockpit simulator was dismantled and discarded.

The DSKY was the astronaut's interface to the Apollo Guidance Computer
developed by MIT, and was critical to every aspect of the mission. Each
program had a two-digit code and commands were entered as two-digit numbers
in a verb-noun sequence. The device permitted the astronauts to collect and
provide flight information necessary for the precise landings on the moon.
It was the DSKY that provided the astronauts with critical burn times for
engine firings, course corrections, trajectories, and other key calculations
vital in getting a crew to and from the moon. The DSKY also reported the
program alarm moments before the LM touched down on the lunar surface to
land.

During Apollo 14, a loose ball of solder floating inside the abort switch of
the LM Antares caused an intermittent short circuit, threatening to
accidentally activate the switch and rocket the module back into orbit
during its landing sequence. In order to prevent that scenario, MIT computer
programmer Don Eyles, a developer of the AGC's source code, was asked to
hack his own software to find a workaround. This represented the most
dramatic moment for MIT's programmers throughout the entire Apollo program,
as they had just three to four hours to work out a fix, test it, and relay
it to the astronauts in time for Powered Descent Initiation (PDI). Eyles
accomplished his task in just two hours, developing a 26-command sequence to
be entered into the DSKY that reprogrammed the AGC to ignore the abort
button. The codes were relayed to Alan Shepard and Edgar Mitchell with ten
minutes to spare, and the LM Antares successfully touched down on the lunar
surface at 09:18:11 UTC on February 5, 1971. As the MIT DSKY used to verify
the code that saved the Apollo 14 mission, this is an exceptionally
important piece of space history.



-



RE: Craigslist: RP05 drive cable in Indiana

2019-03-27 Thread Paul Birkel via cctalk
"Audio consoles" hah!  That's a DEC MASSBUS cable.  Heavy ...

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jason T via 
cctalk
Sent: Wednesday, March 27, 2019 3:23 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Craigslist: RP05 drive cable in Indiana

No affiliation with the seller, just a strange item to come across
randomly.  Digital BC06S cable, which is mentioned in the manual for the
RP05 and possibly others:

https://chicago.craigslist.org/nwi/ele/d/multi-pin-digital-cable/6835150645.html

The ad shows updated two days ago so they likely still have it.

J



RE: PDP-11 Memory

2019-01-09 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Bill 
Gunshannon via cctalk
Sent: Wednesday, January 09, 2019 1:49 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: PDP-11 Memory

...

M8067-LB
M8067-LF
M8067-LJ  - Same problem.  I can find no documentation
 for any -L boards and these don't even resemble
 the pictures I find.

...
Anybody got any pointers to help me configure some of this stuff?

Bill

-

M8067-L ==> EK-MSV0P-UG-001 MSV11-P User Guide.pdf - Bitsavers

-
paul



RE: KD11-E/EA microcode flow diagrams

2019-01-08 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Fritz Mueller 
>via cctalk
>Sent: Tuesday, January 08, 2019 1:43 PM
>To: General Discussion: On-Topic and Off-Topic Posts
>Subject: Re: KD11-E/EA microcode flow diagrams
>
>...  I could really use a “USIC”... :-)

I believe that's called a "UniBone", sortta: 
http://retrocmp.com/projects/unibone

-
paul



Microcode, which is a no-go for modern designs

2019-01-02 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Carlo Pisani 
>via cctalk
>Sent: Tuesday, January 01, 2019 5:35 PM
>To: ben; General Discussion: On-Topic and Off-Topic Posts
>Subject: Re: Motorola M88K books & user manuals (looking for)
>
>> I was never a fan of RISC architecture as does not fit the standard high
>> level language model. Everybody wants a 1 pass compiler, thus the RISC
>> model. If you are doing your own RISC model, you might consider a model
>> that supports Effective addressing better since we have got the point
>> where fetching the data is taking longer than processing it.
>
>yup. I am a 68k programmer so I know what you mean.
>the 68k is more comfortable to be programmed in assembly, and even the
>EA modes (especially in the 68020 and CPU32) help a lot.
>
>unfortunately, the 68K is very complex to be designed, and the first
>68020 used microcode, which is a no-go for modern designs.
>
>...

I'm curious as to why you make this claim that microcode is no-go in "modern" 
designs.  Could you please elaborate on this point?  I don't see why the 
alternative random control logic would be a better proposition.

Thanks,
paul



RE: 8-Update

2018-12-18 Thread Paul Birkel via cctalk
>I have an .slt for the PDP-8/e lever
>Rod

Please publish/share?

paul



RE: Hayes Transet Manual and Software

2018-12-17 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jason T via 
>cctalk
>Sent: Monday, December 17, 2018 12:44 AM
>To: General Discussion: On-Topic and Off-Topic Posts
>Subject: Hayes Transet Manual and Software
>
>One of my few remaining Holy Grail items, I got a Hayes Transet 1000
>this week.  My three-part Hayes stack is now complete.
>
>...
>
>-j

Excellent!  In your Hayes explorations have you come across any technical 
documentation for the Hayes Micromodem-100, the successor to the 80-103A?  All 
that I've been able to uncover is a marketing brochure.  Would like to uncover 
more ...

Thank you,
paul



RE: 8-Update

2018-12-16 Thread Paul Birkel via cctalk
>-Original Message-
>-From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Rod G8DGR 
>via cctalk
>-Sent: Sunday, December 16, 2018 2:36 AM
>-To: General Discussion: On-Topic and Off-Topic Posts
>-Subject: 8-Update
>
>Sheesh!! 
>Well what a response. 
>This stems from my (so far) successful major over haul of my PDP-8/e.
>I found one failed 7474 and one failed 8881 – replaced and now working.
>I think I have the rim loader toggled in and will attempt to send a paper tape 
>image from Hyperterm
>Strangely I do have at least three genuine complete 4k memory sets.
>
>The eightstoration will continue.
>
>However I began to think would it be possible to create a close copy of an  
>8/e out of  modern parts.
>As you all know I make front panels so that’s not a problem. 
>I did manage to copy my (distorted) bezel in resin.
>A friend has been able to 3D print toggle switch leavers that fit and work.
>...

Could you (or your fried) tell us more about "A friend has been able to 3D 
print toggle switch leavers that fit and work"?
I have need to do the same :-<.  And I don't have a 3D printer, either.

paul




RE: Core memory emulator using non volatile ram.

2018-12-15 Thread Paul Birkel via cctalk
Perhaps Cypress FM1808 (32Kx8).  Obsolete, but available on eBay.  SOP for a 
bit of extra challenge!

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Rod G8DGR via 
cctech
Sent: Saturday, December 15, 2018 4:22 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Core memory emulator using non volatile ram.

I have an idea to produce an MM-8  clone using RAM that acts like core when 
turned off.
Can anybody suggest a chip that will do this?

Rod Smallwood


Sent from Mail for Windows 10



RE: Opening RL02 disk pack

2018-12-07 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Friday, December 07, 2018 10:24 AM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Opening RL02 disk pack

> From>: Christian Corti

> I thought that the DEC packs would be similar but no, DEC had to
invent
> something different...

Huh? I thought RL0x drives use an IBM 5440 type pack (as used on the IBM
System/3 - I used one of those at my first computer job, they'd just gotten
it in); DEC may have used their own format (and servo track stuff), I don't
know much about the 5440.

Noel


Quoted from "DISK DRIVE CONTROL: THE EARLY YEARS" (Abramovitch & Franklin)
https://www.researchgate.net/publication/3206778_A_brief_history_of_disk_dri
ve_control 

"DEC came out with the 125 TPI RL01 disk drive in 1978,which was the first
mass
produced full sectored (embedded) servo drive on the market."

Sounds to me like it was different, but in a good way?

paul



RE: [rescue] Sun2/120 SunOS 3.2 suntools movie (was: advise on Sun2 disk install)

2018-12-06 Thread Paul Birkel via cctalk
-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of allison via 
cctech
Sent: Thursday, December 06, 2018 9:13 AM
To: cct...@classiccmp.org
Subject: Re: [rescue] Sun2/120 SunOS 3.2 suntools movie (was: advise on Sun2 
disk install)

On 12/06/2018 07:28 AM, Liam Proven via cctech wrote:
> On Thu, 6 Dec 2018 at 12:44, Tony Duell  wrote:
>> I don't think anyone is questioning that it's a workstation, and that it was
>> made by Sun.
>>
>> I think the problem is over 'first' and that a Sun-2 is not going to be the
>> 'first' model.
> Ah! Excellent point. I have to admit, I was totally unfamiliar with
> the very early Sun products. I was happy with my little ZX Spectrum
> back then, and being about 14, wasn't paying much attention to the
> world of academic Unix usage. :-)
>
> Looking up the SUN-1, I see that it lacked a graphics adapter, and was
> a text-only machine. I didn't know that. That alone means that it's
> not really what I think of when I think of a Sun workstation: no
> windowing system means that for me it's not really a workstation.
>
> But as a single-user Unix machine, yes, it unquestionably qualifies,
> and I need to redefine my terms and my thinking a little...

During my days at DEC in the later 80s the definition of workstation was 1MIPS 
processing power,
1M pixels, Desktop or desk side (fairly compact).  Graphics and processing 
power were high
and lots of ram and sufficient local disk as well.  Most of the machines were 
RISC based,
Sun (sparc), MIPS, or ARM powered.

Allsion
-

And cost no more than a "megapenny" ;->.

See the CMU "3M" definition:  https://en.wikipedia.org/wiki/3M_computer

-




Operation Codes

2018-12-03 Thread Paul Birkel via cctalk
https://www.asc.ohio-state.edu/dunlap.3/humor/instruction.set.html

 

ERS Erase Read-only Storage

FPT  Fire Photon Torpedoes

GCAR   Get Correct Answer Regardless

XIO   Execute Invalid Op code

 

Among others!

 

-



RE: DEC backplanes on eBay

2018-09-24 Thread Paul Birkel via cctalk
Superstar; see my post two weeks ago.

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Monday, September 24, 2018 11:22 AM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: DEC backplanes on eBay

Anyone recognize these:
  
  https://www.ebay.com/itm/183446161463

They've got a fair amount of wire-wrap, so I'd think 70's-80's.

Noel



RE: VT240, VT241 are graphics? what does it mean?

2018-09-16 Thread Paul Birkel via cctalk
And (of course!):  TR-95_Fundamentals_Of_ReGIS_Jul79.pdf

-Original Message-
From: Paul Birkel [mailto:pbir...@gmail.com] 
Sent: Sunday, September 16, 2018 12:14 PM
To: Carlo Pisani; General Discussion: On-Topic and Off-Topic Posts
Subject: RE: VT240, VT241 are graphics? what does it mean?

See Bitsavers for:

EK-VT125-GI-001_VT125_ReGIS_Primer_May82.pdf
AA-K336A-TK_GIGI_ReGIS_Handbook_Jun81.pdf

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Carlo Pisani 
via cctalk
Sent: Sunday, September 16, 2018 11:02 AM
To: cctalk@classiccmp.org
Subject: VT240, VT241 are graphics? what does it mean?

hi
so, in a description of DEC terminals, I read "VT240 and VT241 are
graphics terminals, supporting Digital’s ReGIS graphics and Tektronix
vector graphics"

what does it mean? which kind of graphics? Can they draw lines?

I am googling for "Digital’s ReGIS graphics" and "Tektronix vector
graphics", but I have only found dead links =(



RE: VT240, VT241 are graphics? what does it mean?

2018-09-16 Thread Paul Birkel via cctalk
See Bitsavers for:

EK-VT125-GI-001_VT125_ReGIS_Primer_May82.pdf
AA-K336A-TK_GIGI_ReGIS_Handbook_Jun81.pdf

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Carlo Pisani 
via cctalk
Sent: Sunday, September 16, 2018 11:02 AM
To: cctalk@classiccmp.org
Subject: VT240, VT241 are graphics? what does it mean?

hi
so, in a description of DEC terminals, I read "VT240 and VT241 are
graphics terminals, supporting Digital’s ReGIS graphics and Tektronix
vector graphics"

what does it mean? which kind of graphics? Can they draw lines?

I am googling for "Digital’s ReGIS graphics" and "Tektronix vector
graphics", but I have only found dead links =(



RE: DEC lk201 keyboard for DEC Terminal vt220

2018-09-15 Thread Paul Birkel via cctalk
Some useful information: 
http://www.netbsd.org/docs/Hardware/Machines/DEC/lk201.html 

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Carlo Pisani 
via cctalk
Sent: Saturday, September 15, 2018 10:15 AM
To: cctalk@classiccmp.org
Subject: DEC lk201 keyboard for DEC Terminal vt220

hi
about DEC lk201 for DEC Terminal vt220,
I am looking for information about
- the pinout of the connector (it should be 4 pins, sort of serial)
- the protocol used
- key keymap

thanks in advance



VAX 11/785 "Superstar" Backplanes

2018-09-05 Thread Paul Birkel via cctalk
On the 'bay: 183405165416 and 183405165414  "Scrap / Gold Recovery"

 

Six total.  One wonders what the scrappers did with the rest, and where they
came from given that the location is Goffstown, New Hampshire.

 

paul



RE: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

2018-08-26 Thread Paul Birkel via cctalk
Which length band did you find worked best as a replacement?

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Wednesday, August 22, 2018 2:50 AM
To: General Discussion: On-Topic and Off-Topic Posts; Al Kossow
Subject: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.

I unearthed some old TU58 tapes that luckily was readable (after carefully
replacing the tension band)

-



RE: Centronics 101A manuals?

2018-08-19 Thread Paul Birkel via cctalk
Al:  That's a very nice set that you've uploaded.  Again, thanks :->.

-Original Message-
From: Paul Birkel [mailto:pbir...@gmail.com] 
Sent: Tuesday, August 14, 2018 3:21 PM
To: Al Kossow; General Discussion: On-Topic Posts; cctalk@classiccmp.org
Subject: RE: Centronics 101A manuals?

Thank you Al!

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Al Kossow via 
cctech
Sent: Sunday, August 12, 2018 10:09 AM
To: cctalk@classiccmp.org
Subject: Re: Centronics 101A manuals?

Yes, I have them scanned, I'll try to get them uploaded to bitsavers this 
morning

On 8/12/18 3:51 AM, Paul Birkel via cctalk wrote:
> Speaking of BIG printers, does anyone have the maintenance manual for the 
> Centronics 101A impact printer?



RE: HP scope mailing list

2018-08-14 Thread Paul Birkel via cctalk
Try: hp_agilent_equipm...@yahoogroups.com

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Charles 
Dickman via cctalk
Sent: Tuesday, August 14, 2018 8:56 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: HP scope mailing list

Is there an HP scope and instrument mailing list?

I have an HP 181A storage scope that I would like to get working again.

-chuck



RE: Centronics 101A manuals?

2018-08-14 Thread Paul Birkel via cctalk
Thank you Al!

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Al Kossow via 
cctech
Sent: Sunday, August 12, 2018 10:09 AM
To: cctalk@classiccmp.org
Subject: Re: Centronics 101A manuals?

Yes, I have them scanned, I'll try to get them uploaded to bitsavers this 
morning

On 8/12/18 3:51 AM, Paul Birkel via cctalk wrote:
> Speaking of BIG printers, does anyone have the maintenance manual for the 
> Centronics 101A impact printer?



Centronics 101A manuals?

2018-08-12 Thread Paul Birkel via cctalk
Speaking of BIG printers, does anyone have the maintenance manual for the 
Centronics 101A impact printer?

All that I've found thus far is marketing literature.  Not even an owner's 
manual.

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Sunday, August 12, 2018 5:08 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Oliverti Te300 teleprinter manuals?

Does anyone have any type of manuals for the Olivetti Te300 teleprinters?

Preferebly maintenance manuals or similar.

https://vads.ac.uk/diad/bres/pub/COID/231/32.jpg



All the Tech You Can Take

2018-07-28 Thread Paul Birkel via cctalk
A recent visit to the Living Computers: Museum + Labs:

 

https://www.washingtonpost.com/lifestyle/travel/a-seattle-museums-tech-bonan
za-from-classic-video-games-to-virtual-reality/2018/07/25/16cc1f8c-8a8e-11e8
-a345-a1bf7847b375_story.html

 

--

 



RE: Strange third party board in PDP-11/45

2018-07-23 Thread Paul Birkel via cctalk
-Original Message-
From: Paul Birkel [mailto:pbir...@gmail.com] 
Sent: Monday, July 23, 2018 2:36 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: Strange third party board in PDP-11/45

...

>From the ABLE marketing literature:

CACHE/ 45 (CACHE BUFFER MEMORY) INSTALLS IN: PDP-11/45, -11/50 and -11/55
CAPACITY: 2048 byte (1 K word).
ENHANCEMENT FACTOR: Run time reductions to 50% (100% speed improvement) are
achievable.
CACHE PARITY: Automatically goes off-line in event of any data error.
RANGE SELECTION: User may optimize hit ratio by upper/lower limit switch
settings.
SPECIAL FEATURE: Cache/ 45 can be enabled via software or console switches.

Presumably that's what Mattis has in-hand.

-

https://books.google.com/books?id=hYD3sny2NzEC=PA23=PA23=ABLE+Comp
uter+technology+ACT+DEC+%22CACHE/45%22=bl=b15iACJbMd=oLMrJMn2
qEFmxiKSMIhpLF5qYnk=en=X=2ahUKEwjcyvzi87TcAhVOw1kKHdc5A8kQ6AEwAHoE
CAIQAQ#v=onepage=ABLE%20Computer%20technology%20ACT%20DEC%20%22CACHE%2F45%
22=false 

Computerworld, Page 23, July 26, 1976

ACT Has PDP-11/45 Buffer
SANTA ANA, Calif. - Able Computer Technology (ACT) has a 2K-byte cache
buffer for use with the Digital Equipment Corp. POP-11/45.
The Cache/45 is contained on a single printed circuit board that plugs into
the
system's chassis.
Buffer control is provided over every core memory address location on the
Unibus. A switch within the memory buffer permits a choice of either on-line
or off-line operation, the company said.
The buffer costs $7 ,000. ACT is at I 538-E Chestnut St., Santa Ana, Calif.
92705.

(Somewhat strange use of the expressions "on-line" and "off-line" operation,
IMO.)

I presume that the reason for "single printed circuit board" is that only a
single "normal" slot is occupied.

paul



RE: Strange third party board in PDP-11/45

2018-07-23 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Monday, July 23, 2018 2:36 AM
To: Noel Chiappa; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Strange third party board in PDP-11/45

Here is how it is connected: https://i.imgur.com/4TEZoiO.jpg

The sandwiched dual boards are i sitting in 27 / 26 AB. The board in 27AB
was empty (quick glance), while the board in 26AB has a few TTL chips on it.
 Slot 26AB is the Unibus A slot, Slot 27 AB should be a terminator on
Unibus B. (maybe there were terminating resistors on the second board.
Didn't check in detail) Slot 28AB is Unibus B and goes to the DD11-C and
the RK11-D backplanes.

The hex ABLE/ ACT board sits in slot 21 which is the memory controller
board for the MS11.

It very much looks like it is a Cache board. But why have some one written
"Not used" (Används ej) on it? I'll hope I find the documentation for it!

/Mattis

-

I wonder whether this CACHE/45 can coexist with MS11 memory on the Fastbus 
itself, or is designed to _replace_ MS11 memory by accelerating access to 
Unibus-based memory?  The available product literature doesn't clarify either 
way.

paul



RE: Strange third party board in PDP-11/45

2018-07-23 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Sunday, July 22, 2018 2:07 PM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Strange third party board in PDP-11/45

- MS11-B Engineering Drawings

About all we're missing are the MS11-A/C data board engineering drawings.
(The control board is in the MS11-B prints.)

-

Note that the schematics clearly show that the memory controller has direct
access to both the Fastbus and Unibus B, and thus slot 21 (and 16) is wired
for the purpose.

So why have OTT cables to both slots 26 /27 AB?

Perhaps the narrow cable goes to slot 27 to pick up some additional Unibus B
signals, and the wider cable to slot 26 to pick up a larger set of Unibus A
signals equivalent to those to which it already has direct access for Unibus
B).. 

Is this the way that those OTT cables are wired Mattis?

>From the ABLE marketing literature:

CACHE/ 45 (CACHE BUFFER MEMORY) INSTALLS IN: PDP-11/45, -11/50 and -11/55
CAPACITY: 2048 byte (1 K word).
ENHANCEMENT FACTOR: Run time reductions to 50% (100% speed improvement) are
achievable.
CACHE PARITY: Automatically goes off-line in event of any data error.
RANGE SELECTION: User may optimize hit ratio by upper/lower limit switch
settings.
SPECIAL FEATURE: Cache/ 45 can be enabled via software or console switches.

Presumably that's what Mattis has in-hand.

-



RE: Strange third party board in PDP-11/45

2018-07-22 Thread Paul Birkel via cctalk
ACT is parked on the upper-right under the handle.
Several variants of "10003" are marked near the left handle.
And it's copyrighted 1976.

ACT = ABLE Computer Technology.

Their first product was PN 10001 (copyright 1976), the A.C.T. Univerter; see 
"Able_Univerter_Nov81.pdf" on Bitsavers.
http://bitsavers.trailing-edge.com/pdf/able/Able_Univerter_Nov81.pdf 

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Bob Smith via 
cctalk
Sent: Saturday, July 21, 2018 4:44 PM
To: Mattis Lind; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Strange third party board in PDP-11/45

any identification number sn front or back? can tell from just that shot.


On Sat, Jul 21, 2018 at 2:37 PM, Mattis Lind via cctalk
 wrote:
> This board was sitting in slot 21 of the backplane in a 11/45
>
> https://i.imgur.com/ZYWZQCo.jpg
>
> What kind of board is this?
>
> It has 26 bipolar RAMS. Fairchild 93415 1kbit SRAM.
>
> The manufacturer might be ACT whatever that is.
>
> My guess is that it is some kind of cache board? It is connected to both
> unibuses in the machine.
>
> Better ideas? Documentation?
>
> /Mattis



RE: DEC FPJ11-AA

2018-07-01 Thread Paul Birkel via cctalk


-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Sunday, July 01, 2018 8:12 AM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: DEC FPJ11-AA

> From: Paul Birkel

> Same thing in this case. 

The CPU looks to see a PMI signal that is generated by the KTJ11 - no signal
-> 11/83.

My impression is that except for the speed of the J11 (and the crystal), and
whether or not it came with the FPJ11, all four of the M8190 board variants
are otherwise identical. Whether it's a /73, /83 or /84 depends entirely on
whether it has/sees PMI memory and the KTJ11-B UNIBUS converter (and the
correct backplane, for the latter, of course).

> The 11/84 is an 11/83 extended by a Unibus interface to support legacy
> peripherals.

It has a special backplane which is mostly UNIBUS slots, with a few QBUS/PMI
slots on the front, and a 'special' slot in the middle into which the UNIBUS
adapter goes.

Noel

-
Indeed.  As you say WRT the question asked, "same difference" excepting the
Xtal/speed rating.  The backplanes, power supplies, enclosures are of course
radically different as they serve different commercial objectives.  And as
you say, the -AE ought to work in either environment.

paul



RE: DEC FPJ11-AA

2018-07-01 Thread Paul Birkel via cctalk
Same thing in this case.  The 11/84 is an 11/83 extended by a Unibus
interface to support legacy peripherals.

-Original Message-
From: W2HX [mailto:w...@w2hx.com] 
Sent: Sunday, July 01, 2018 7:36 AM
To: Paul Birkel; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: DEC FPJ11-AA

what is the story about this board? Listing says 11/84 but this website says
8190-AE is for 11/83?

http://web.frainresearch.org:8080/projects/pdp-11/dcj11.php

Which is it?
Thanks
Eugene W2HX

From: cctalk  on behalf of Paul Birkel via
cctalk 
Sent: Sunday, July 1, 2018 4:00 AM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: DEC FPJ11-AA

https://www.ebay.com/itm/DEC-PDP-11-84-M8190-AE-Module-FPJ11-AA/113112634277



IMO a really good deal on an 18 Mhz FPJ11-AA.  Those don't seem to come up
much .



Not my item, but I have previously purchased from this seller and he's
reliable.



-

=



DEC FPJ11-AA

2018-07-01 Thread Paul Birkel via cctalk
https://www.ebay.com/itm/DEC-PDP-11-84-M8190-AE-Module-FPJ11-AA/113112634277

 

IMO a really good deal on an 18 Mhz FPJ11-AA.  Those don't seem to come up
much .

 

Not my item, but I have previously purchased from this seller and he's
reliable.

 

-



How to get rid of a DECwriter II?

2018-05-25 Thread Paul Birkel via cctalk
Cross-post for the DEC Lovers here.

-Original Message-
Sent: Thursday, May 24, 2018 9:52 PM
Subject: [GreenKeys] How to get rid of a DECwriter II?

I'd sure like to get this thing out to make room for more Teletypes.
Located in NW Arkansas.

Jim Haynes 

-



RE: Tennecomp

2018-05-18 Thread Paul Birkel via cctalk
Three possibly interesting papers about some Tennecomp equipment uses.

The third  (MCA FOCAL) references the "PDP-9, PDP-9/L, or PDP-15".
Also references DEC-15-MR2B-D "Advanced Monitor Software System for 
PDP-15/20/30/40".

https://link.springer.com/content/pdf/10.3758%2FBF03201748.pdf
https://pdfs.semanticscholar.org/5488/56767b7c6a5b97d5076902ff92e94ff3e836.pdf
https://digital.library.unt.edu/ark:/67531/metadc1026093/m2/1/high_res_d/4603095.pdf

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Kyle Owen via 
cctalk
Sent: Friday, May 18, 2018 5:22 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Tennecomp

Al uploaded some of my Tennecomp docs onto Bitsavers:
http://bitsavers.org/pdf/tennecomp/

He also already had some brochures, which are very interesting as well.

Anyone else have some Tennecomp stuff? I've got more stuff to scan,
including a bunch of schematics (size C paper, for the most part), as well
as a few other manuals I believe.

I'd be curious to hear any of their history, especially because of their
location in Oak Ridge, TN.

I will also photograph some of my Tennecomp things (my Minidek, some
Omnibus boards, etc.) at some point.

Thanks,

Kyle

P.S. My Minidek came with some carts, but the pressure pads are all rotted.
A cursory glance online didn't turn up any source of replacement pads in
stock for Fidelipacs/Stereo-Paks. Anyone have any suggestions, or tips on
making your own?



LCM 8/e System Photo makes ZDNet

2018-04-16 Thread Paul Birkel via cctalk
https://www.zdnet.com/article/from-paper-tape-to-the-altair-8800-the-story-o
f-my-first-computers/

 

Noel will appreciate the blinky-lights controller panel top-dead-center :->.

 

paul



RE: Message Reply with quotation

2018-03-21 Thread Paul Birkel via cctalk
In Outlook, this behavior is controlled using:  Options : Mail : Replies and
forwards

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Pontus
Pihlgren via cctech
Sent: Wednesday, March 21, 2018 8:10 AM
To: GerardCJAT; General Discussion: On-Topic and Off-Topic Posts
Cc: cct...@classiccmp.org
Subject: Re: Message Reply with quotation

On Wed, Mar 21, 2018 at 09:46:23AM +0100, GerardCJAT via cctalk wrote:
> Hello Guys,
> 
> It seems that YOU can reply to cctech message(s) with "quoting" the 
> answered message.
> 
> How do you do that ???

My mail client does it automatically for me. When I hit reply I get the 
message I reply to with the character ">" placed in front of each line.

It looks like you are using Outlook 6 to send mails and I don't know if 
quoting can be accomplished in an easy way. Perhaps copy and add 
">" manually.

/P



RE: DEC Field Guide > equivalent available for Data General?

2018-03-21 Thread Paul Birkel via cctalk
107-000187-16  = "DISK CARTRIDGE CONTROL DGC NOVA"

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Ulrich Tagge 
via cctalk
Sent: Wednesday, March 21, 2018 5:37 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: DEC Field Guide > equivalent available for Data General?

Hi all,

is there somewhere a list of DG modules which includes also 3rd 
party/OEM, ... like it is available for DEC?

Would be good to know what the following is:

107-000621 02
107-000621 03/11
107-001632-00
107-0016320/02
107-000718-00
107-000181-04
107-000187-16
107-000187-15-30
AB020116-00
107-000621-03
107-001768-02
107-001768-03
107-0017680-1E
107-00053905
Zetaco SCZ-2
 >500-453-00 K
 >500-542-00 K


Many Greetings
Ulrich



RE: XT/370 microcode

2018-03-12 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Paul Berger 
via cctalk
Sent: Monday, March 12, 2018 1:41 PM
To: Guy Sotomayor Jr via cctalk
Subject: Re: XT/370 microcode

The IBM Systems Journal article does not go into great detail but says 
that a complex of three separate processors are used, a modified 68000 
that executes "a large subset of 370 instructions", a standard 68000 to 
emulate the remainder odf the instructions and a modified 8087 to 
execute the floating point.  I am not at liberty to post the document.

Paul.
-

This one?  Seems to be freely available.

https://www.researchgate.net/publication/224102395_System370_capability_in_a_desktop_computer

-
paul



RE: radar history

2018-03-03 Thread Paul Birkel via cctalk
On Sat, Mar 3, 2018 at 12:46 AM, Chuck Guzis via cctalk <
cctalk@classiccmp.org> wrote:

> I dunno about these historical accounts.
>
> I was watching a PBS program about RADAR and the magnetron was made out
> to be a super-secret device, yet there's a clear explanation of it in my
> 1942 "Radio Handbook".
>
> --Chuck

For a non-sensationalized accounting that tracks developments, and 
personalities, over the course of many decades of developments and spin-offs, 
try:

The Invention That Changed the World:
How a Small Group of Radar Pioneers Won the Second World War and Launched a 
Technical Revolution
(1998; Touchstone; 576 pp)

Authored by Robert Buderi, former technology editor for Business Week.

Yes, quite an over-the-top title ... but the content isn't that way at all, 
IMO.  It stacks up quite well against academic treatises on related topics 
(e.g., Whirlwind) published by MIT Press.

-
paul



ARPANET Reaches the Royal Signals and Radar Establishment (RSRE, Malvern)

2018-02-25 Thread Paul Birkel via cctalk
The following extract comes from a History of Programming Languages (HOPL)
retrospective on the development of the Ada programming language written by
the individual who was the government lead at DARPA for much of the time of
its development (Colonel William A. Whitaker).  I found it humorous.
Perhaps you will too.

 

-

The ARPANET connection was inaugurated during a visit to RSRE by Her Royal
Highness Queen Elizabeth II.  Her Majesty sent a message of greetings to the
members of the HOLWG from her net account, EIIR, by pressing a red velvet
Royal carriage return.  Because the address list was long, it took about 45
seconds for the confirmation to come back, 45 seconds of dead air.  Prince
Philip remarked, joking respectfully, that it looked like she broke it.

-

 

I suspect that we've "all been there" at one time or another!

paul

 



RE: Microfiches on Ebay

2018-02-11 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Sunday, February 11, 2018 10:15 AM
To: Noel Chiappa; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Microfiches on Ebay

2018-02-11 0:04 GMT+01:00 Noel Chiappa via cctalk :

> > From: Mattis Lind
>
> > Many are already available online but some I cannot find.
>
> Which ones are you missing? I'm curious to see if my set has them.

I cannot find the DW750 Technical manual online for example.  But someone
has bought that fiche now.  Of course there are plenty of manuals for
various printers and other esoteric devices which might be of less
interest.There is a "DEC GT41/GT43 Graphic Display Terminal Install &
Maintenance Manual" for which I cannot find any traces of online. What is
GT41/GT43 BTW?

> Noel
>

/Mattis

-

I screen-scraped the following list of available microfiche.  I certainly don't 
recognize some of those items!

DEC 433MP Application Service Guide, Microfiche
DEC 881 Power Controller User Guide, Microfiche
DEC AA50 Digital To Analog Converter Technical Manual, Microfiche
DEC AAV11 ADV11 KWV11-A DRV11 Users Guides, Microfiche
DEC ADQ32 A/D Converter Module User Guide, Microfiche
DEC ADQ32-SF A/D Converter Module Option Installation Guide, Microfiche
DEC ADV11-SF Analog-To-Digital Converter Module Option Install Guide, Microfiche
DEC ASF171 Automatic Sheet Feeder, Microfiche
DEC AXV11-C/KWV11-C Analog Module And Real-Time Clock Module, Microfiche
DEC AXV11-SF Analog I/O Module Option Installation Guide, Microfiche
DEC BA11-A Mounting Box And Power System Technical Manual, Microfiche
DEC BA11-K 10.5 Inch Mounting Box Technical Manual, Microfiche
DEC BA11-L Mounting Box Technical Manual, Microfiche
DEC BA123 Enclosure Maintenance, Microfiche
DEC BA123-UC Inner Shield Upgrade Kit Installation Guide, Microfiche
DEC BA214 Enclosure Maintenance, Microfiche
DEC BA215 Enclosure Maintenance, Microfiche
DEC BA220/221 E-Series Industrial Workstation Maintenance Advisory, Microfiche
DEC BA400 Series Enclosures Storage Devices Installation Procedures, Microfiche
DEC BAM11 Status/Alarm Monitor Technical Manual, Microfiche
DEC BDV11 Bus Terminator/Bootstrap/Diagnostic Technical & ROM Manuals Microfiche
DEC BL01 AC Line Monitor Maintenance Manual, Microfiche
DEC BM873 Restart/Loader Manual, Microfiche
DEC CB11 Telplant Interface Manual, Microfiche
DEC CD11 Card Reader System Manual, Microfiche
DEC CI750 Computer Interconnect Technical Description Manual, Microfiche (2)
DEC CMR11 Technical & Installation Manuals (2), Microfiche (2)
DEC CVC Installation And Operation Manual H7226 (60Hz), Microfiche
DEC CXY08 Asynchronous Multiplexer Technical Manual, Microfiche
DEC DA11-F Unibus Window Maintenance Manual, Microfiche
DEC DA28-A Interprocessor Buffer Maintenance Manual, Microfiche
DEC DA28-C Interprocessor Buffer Maintenance Manual, Microfiche
DEC DA28-F Interprocessor Buffer Maintenance Manual, Microfiche
DEC DA28-J Interprocessor Buffer Technical Manual, Microfiche
DEC DAV11-B LSI-11 DMA Interprocessor Link Option Description, Microfiche
DEC DB11-A Bus Repeater Manual, Microfiche
DEC DB11-H Bus Repeater Technical Manual, Microfiche
DEC DC08 Telegraph Line Maintenance Manual, Microfiche
DEC DECconnect System Facilities Cabling Installation Guide, Microfiche
DEC DECmux 300 Remote Terminal Multiplexer Technical Manual, Microfiche
DEC DECOM Broadband Ethernet Transceiver Technical Manual, Microfiche
DEC DECserver 100 Terminal Server Technical Manual, Microfiche
DEC DECserver 200/MC Hardware Installation Owner's Guide, Microfiche
DEC DECstation 210 Personal Computer Service Guide, Microfiche
DEC DECstation 300 SERIES Personal Computer Service Guide, Microfiche
DEC DEFTR Digital Broadband Ethernet Frequency Translator Manuals, Microfiche
DEC DELQA-SF Q-Bus To Ethernet Adapter Option Installation Guide, Microfiche
DEC DEMPR Digital Thinwire Ethernet Multiport Repeater Guide, Microfiche
DEC DEMWA Digital Ethernet Microwave Adapter Technical Manual, Microfiche
DEC DEPCA Digital Ethernet Personal Computer Bus Adapter Guide, Microfiche
DEC DEQNA User's Guide, Microfiche
DEC DEQNA-SF Ethernet Interface Option Installation Guide, Microfiche
DEC DEREP Ethernet Repeater Technical Manual, Microfiche
DEC DESQA-SF Switchable Qbus To Ethernet Adapter Option Guide, Microfiche
DEC DESTA Digital Thinwire Ethernet Station Adapter, Microfiche
DEC DF11-W Interface Service Manual, Microfiche
DEC DFC11-A Converter Clock Maintenance Manual, Microfiche
DEC DFS11-BA/BC EIA RS-422 Signal Cond. Module Option Description, Microfiche
DEC DFS11-BB/BD Mil 188-114B Signal Condition Mod Option Description, Microfiche
DEC DH11 Asynchronous Multiplexer Technical Manual, Microfiche
DEC DHB32 Asynchronous Multiplexer User Guide, Microfiche
DEC DHQ11 Asynchronous Multiplexer Technical Manual, Microfiche
DEC DHU11 Interface Technical Manual, Microfiche
DEC DHV11 Remote 

RE: anyone recognize this blank board?

2018-02-10 Thread Paul Birkel via cctalk
DPM01 DECdataway terminal multiplexer ("a microprocessor-based peripheral 
interface")?

http://bitsavers.trailing-edge.com/pdf/dec/terminal/EK-VT110_UG-001_Dec78.pdf

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Al Kossow via 
cctalk
Sent: Saturday, February 10, 2018 11:50 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: anyone recognize this blank board?

https://www.ebay.com/itm/311965565048

The same seller has a VT180 and some variant of the VT100 with an expansion 
board
I don't recognize

Interesting thing about the blank board is it says "VT-11X" on it and it looks 
like
it would have been an 8-bit CPU looking at the string of DRAMs on it.



RE: Details about IBM's early 'scientific' computers

2017-11-14 Thread Paul Birkel via cctalk
Wonderful document.  Thank you IBM Customer Engineering!

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Camiel
Vanderhoeven via cctech
Sent: Tuesday, November 14, 2017 4:01 AM
To: Noel Chiappa; cctech; cctalk@classiccmp.org
Subject: Re: Details about IBM's early 'scientific' computers

Have you really looked at everything that is on Bitsavers? It¹s much more
than just the engineering manuals. If I may offer a suggestion, have a
look at this document and see if it fits your needs:

http://www.bitsavers.org/pdf/ibm/7090/ce/223-6895-1_7090_CE_Reference_System
_Fundamentals_7100_7151_7606_Sep61.pdf 

Camiel

On 11/14/17, 4:32 AM, "cctech on behalf of Noel Chiappa via cctech"
 wrote:

>Please, everyone, I do actually know of BitSavers; you don't need to
>point me
>at it.
>
>When I said:
>
>>> I could look at the engineering manuals, but I was hoping for
something
>>> in between them and Bashe et al.
>
>I assumed everyone would understand that by "engineering manuals", I was
>meaning the kind of things one finds in BitSavers.
>
>   Noel




RE: Computing Pioneer Dies

2017-11-13 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Noel
Chiappa via cctalk
Sent: Monday, November 13, 2017 5:00 PM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Computing Pioneer Dies

> From: Brent Hilpert

> What about that little issue of writeable program storage?

Just to clarify my understanding of your position, is a system with a CPU
chip (say one of the 68K models) with only ROM not a 'stored program
machine'?

Noel

PS: You really should look at the book ("ENIAC In Action"), and not rely on
the articles; it's later, more coherent (not being split across a handful of
papers), and much more detailed (e.g. it includes the instruction set for
the
'programmed' version of the ENIAC).

-

Note that most of the BRL references in the three articles in the IEEE
Annals of the History of Computing are available online through DTIC.
Search using Google Scholar.

Unfortunately the referenced manuscripts located in private archives appear
to remain inaccessible to the general public.

Tables I thru III in the second paper, offering a set of side-by-side
comparisons for "ENIAC, EDVAC, and three other computers of the late 1940s"
are well worth contemplation.  The third paper puts a practical perspective
on the somewhat more theoretical perspectives of the first two papers. "1948
ENIAC" was a quite interesting reorganization/application of the computing
resources available in the "1945 ENIAC".

It looks like the somewhat less expensive paperback for "ENIAC in Action" is
due for publication in January.

Noel:  Does the book make any attempt to trace any technological/social
effects *from* the "1948 ENIAC" to other computer developments?  Or are we
to conclude that the "1948 ENIAC" was aa significant "existence proof" for
aspects of the First Report (and evidently quite productive as a
computational tool) but sterile with respect to direct progenitors and
impact on other computer developments of the late-1940's?  For example, do
they cite any evidence that either BINAC or early UNIVAC were other than
"from whole cloth" in nature?  Any of the "IACs"?  Perhaps more at the level
of "coding style/procedures" than hardware
architecture/design/implementation?

As an engineer, I like systems that "get stuff done" and the "1948 ENIAC"
certainly qualifies.

As a (computer) scientist I like what SSEM demonstrated and the fact that it
had direct (physical & intellectual) offspring.

As a practical person I like that the SSEM directly led to the "first
general-purpose commercially produced computer" (Ferranti Mark 1).

There's a lot to like in the span of 1945-1955!

-
paul



RE: HP 7970E - interest to split?

2017-09-26 Thread Paul Birkel via cctalk
Well, as others have pointed out, a "tape transport" is not the whole 
ball-of-wax.  You need the ability to format the tape into blocks and then 
control tape motion in terms of those blocks.  That's what you'd be responsible 
for in your added electronics.  From the Introduction in the Kennedy manual:

"The Model 9800 is equipped with the electronics
necessary for reading and writing tapes and for
controlling the tape motion. The head specifications
and the mechanical and electrical tolerances of the
Model 9800 meet the requirements for IBM compatibility.

However, the formatting electronics, parity
generator, cyclic redundancy check character (CRCC)
generator, gap control, etc, are not included and
must be provided by the tape control and formatter
in order to generate properly formatted IBM compatible
tapes."

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Anders Nelson 
via cctalk
Sent: Tuesday, September 26, 2017 1:41 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: HP 7970E - interest to split?

Ah, yeah that's actually better for my purpose. I'm more concerned with the
data interface - can I just read and write bits at will or are there
contingencies as someone mentioned before?

=]

On Tue, Sep 26, 2017 at 12:06 AM Paul Birkel  wrote:

> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Anders
> Nelson via cctalk
> Sent: Monday, September 25, 2017 7:01 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: HP 7970E - interest to split?
>
> Hmmm, interesting. How does the 7970 compare to the Kennedy 9800?:
>
>
> http://www.ebay.com/itm/Kennedy-9800-9-Track-Data-Tape-Subsystem/232493086636
>
> For the same price the Kennedy drive looks more beautimous...
>
> =]
>
> --
> Anders Nelson
>
> -
>
>
> http://bitsavers.trailing-edge.com/pdf/kennedy/Kennedy_9800_Digital_Tape_Transport_Operation_and_Maintenance_Manual.pdf
>
> 8.5" reels  (not the full size 10.5")
>
>
> http://bitsavers.trailing-edge.com/pdf/hp/tape/7970/07970-90885_7970oper_Dec76.pdf
>
> -
>
> --
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com



RE: HP 7970E - interest to split?

2017-09-25 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Anders Nelson 
via cctalk
Sent: Monday, September 25, 2017 7:01 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: HP 7970E - interest to split?

Hmmm, interesting. How does the 7970 compare to the Kennedy 9800?:

http://www.ebay.com/itm/Kennedy-9800-9-Track-Data-Tape-Subsystem/232493086636

For the same price the Kennedy drive looks more beautimous...

=]

--
Anders Nelson

-

http://bitsavers.trailing-edge.com/pdf/kennedy/Kennedy_9800_Digital_Tape_Transport_Operation_and_Maintenance_Manual.pdf

8.5" reels  (not the full size 10.5")

http://bitsavers.trailing-edge.com/pdf/hp/tape/7970/07970-90885_7970oper_Dec76.pdf

-



RE: RX02 Emulator

2017-09-01 Thread Paul Birkel via cctalk
Check at: www.vcfed.org/forum/showthread.php?51918-Is-there-an-RX01-Emulator 

-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Douglas Taylor 
via cctech
Sent: Friday, September 01, 2017 11:42 AM
To: General Discussion: On-Topic Posts
Subject: RX02 Emulator

In my other post I asked about DEC 11/2 and 11/03 cpus and 18/22 bit 
backplanes.  I am still interested in this but I am considering what 
type of disk to run from.

I ran into a rx02_emulator on github and looks quite interesting, since 
it uses an actual DEC RXV21 interface it would be compatible with the 18 
bit addressing.

Does anyone have experience with this emulator?

Where can you get the circuit board that is part of this project?

Doug



RE: IBM 3330 Drive

2017-09-01 Thread Paul Birkel via cctalk
I'm afraid that I can't help.  But I notice that in the upper-band of the glare 
there appears to be a lot of speckling of the oxide surface.  Is this to be 
expected in a heavily-used disc-pack, or does it indicate surface damage -- and 
if so then what are the likely causes?

Also, was it usual to place markings/labels on the lower-ring like this -- both 
what appears to be one that is painted-on "NEWUC:2005.47" as well as the 
(plastic covered?) insert "SHARE1"?

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of AJ Palmgren 
via cctalk
Sent: Friday, September 01, 2017 3:08 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: IBM 3330 Drive

For reference, here is a picture of the disk pack that I am wanting to
read.

http://bit.ly/2etUg30

I know, I got a bit nervous too when I saw the guy just holding it out
exposed like that.  Let's hope he put it back in the canister very
carefully and quickly.

Can anybody guess the correct model of disk pack from this single picture
and angle?  (Sorry, it's all I have to go on right now).

Thanks!
-AJ


On Mon, Aug 28, 2017 at 11:16 AM, Tom Gardner via cctalk <
cctalk@classiccmp.org> wrote:

> FWIW Paul Alan's Living Computer Museum has (or had) working PDP10's using
> DEC’s RP06's  id=230824_doc=standard.php=43>  which are very similar to a
> 3330-11 (they are Memorex 677's with a bolt on DEC controller).  They will
> not mount a 3330 disk pack (3336) but they should mount a 3336-11 disk pack
> and probably spin it up but DEC’s fixed sector size will be an issue.  I
> seem to recall u could format IBM 3336-11 packs into the DEC format so u
> might actually be able to scan a full track without reformatting
>
>
>
> I know of no operational 3330 or PCM equivalents (e.g. Memorex 3670,
> ISS/Itel 7330, etc); the Computer History Museum purports to have one,
> Catalog Number L2006.1.5  org/collections/catalog/L2006.1.5> , but it might be a -11.  It probably
> would power up and u probably could get it to seek and read (u would need a
> simple controller) but getting access from the museum would be a challenge.
>
>
>
> Good luck.
>
>
>
> Regards
>
>
>
> Tom
>
>
>
> -Original Message-
> From: AJ Palmgren [mailto:microtechd...@gmail.com]
> Sent: Sunday, August 27, 2017 9:42 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: IBM 3330 Drive
>
>
>
> Does anyone here have good technical experience with, or even better
> ACCESS to, an IBM 3330 compatible hard drive unit?  (working or not).
>
>
>
> I'm getting more daring with my projects to attempt to read ancient
> magnetic flux transitions off of things, and I might have an opportunity to
> read a disk pack for one of these beauties.
>
>
>
> I'm certain there are MANY obstacles to overcome with what I'm suggesting,
> and depending on what might be available, I'll tackle those one at a time
> as I cross those bridges.  But for now, I'll just ask about the hardware.
>
>
>
> --
>
>
>
> Thanks,
>
> AJ
>
>   http://QICreader.com
>
>   http://Point4iris.com
>
>   http://MightyFrame.com
>
>
>
>


-- 

Thanks,
AJ Palmgren
http://fb.me/SelmaTrainWreck
https://www.facebook.com/profile.php?id=100010931314283
https://www.linkedin.com/in/aj-palmgren-4a085516/



RE: Bridge Communication Unibus Ethernet board?

2017-08-30 Thread Paul Birkel via cctalk
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Wednesday, August 30, 2017 3:59 AM
To: Henk Gooijen; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Bridge Communication Unibus Ethernet board?

2017-08-29 22:46 GMT+02:00 Henk Gooijen via cctalk :

...

Here is a close up of the etch marking:

http://forum.datormuseum.se/data/87681DD5-B816-494C-AA4C-D8DB3FA35406/1913E94E-C1CC-41C3-9F41-D80A1E869950.jpg
 

It says IECU. I wonder if that is some kind of product name? The copyright
in the etch is 1984 but the chips are mostly from 1985 or 1986.

-

Check out 
http://oai.dtic.mil/oai/oai?verb=getRecord=html=ADA152953
 which has a lot of clues.

Unfortunately Volume II doesn't seem to be online, and would be even more 
helpful based on its TOC.

-



RE: VCF Midwest: 6502 Badges!

2017-08-29 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Vince 
>Mulhollon via cctalk
>Sent: Monday, August 28, 2017 1:31 PM
>To: General Discussion: On-Topic and Off-Topic Posts
>Subject: Re: VCF Midwest: 6502 Badges!
>
>On Mon, Aug 28, 2017 at 10:01 AM, systems_glitch via cctalk <
>cctalk@classiccmp.org> wrote:
>
>> Just a note, looks like your checkout is hitting US orders for $5 shipping
>> ($40 total) on the deluxe kit). I still think that's totally reasonable.
>
>Same here, can't go to the show, but did buy a kit, also can verify the
>website says shipping included but got a shipping charge for $5.

I suspect that the payment-site is trying to automatically determine your 
location in some manner other than actually examining your address-of-record 
(the one associated with the payment option that you use).  In IE it insisted 
that the shipping fee was due despite the fact that my selected payment option 
was a US address; after a bit of experimentation I determined that in Firefox 
it did not apply the additional shipping fee for the same payment option.

By default I use Firefox with both NoScript and AdBlock active (in this case I 
happened to start in IE and immediately encountered the anomalous behavior).  
Perhaps there's some fancy scripting going on that is messing up?

Looking forward to displaying mine proudly :->!   But it (and I) won't be at 
VCF Midwest ...

paul 



RE: VT50 print set

2017-08-11 Thread Paul Birkel via cctalk
Metric dimensions?  Isn't that rather unusual for DEC?

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mattis Lind 
via cctalk
Sent: Friday, August 11, 2017 3:13 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: VT50 print set

I found a VT50 print set in the heaps and recognized there were no copy on
bitsavers so I ran it through a scanner.

https://dl.dropboxusercontent.com/u/96935524/Datormusuem/VT50/VT50-print-set.pdf

Compared to the VT52 print set that is online this one contain plenty of
manufacturing information for the plastic shell of the terminal.



RE: Front Panels - Follow up

2017-06-14 Thread Paul Birkel via cctalk
How about adopting the "fallback" photorealistic approach that Oscar V. is 
using for the PiDP-8 panels?

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Rod Smallwood 
via cctalk
Sent: Wednesday, June 14, 2017 2:43 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Front Panels - Follow up

Hi

 We are ok for now but for future and as yet not designed panels I 
can still draw them. (I'm old but not that old)

However with modern technology there has to be a multi-pass printer that 
can print on perspex (plexiglass) and closely simulate silk screening

My goal is to be able to keep a stock of blanks and print to order.

Could everybody keep an eye open for such devices (exclude those with 
excessive price tags and silly ink costs)

Rod

-- 
There is no wrong or right
Nor black and white.
Just darknessand light



DEC MINC in center Germany -- Mincbasic and RT11 disk

2017-06-14 Thread Paul Birkel via cctalk
+1, please!

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of jim stephens 
via cctalk
Sent: Wednesday, June 14, 2017 3:19 AM
To: Jörg Hoppe via cctalk
Subject: Re: DEC MINC in center Germany



On 6/10/2017 1:29 AM, Jörg Hoppe via cctalk wrote:
> I like to point you to this DEC MINC-11:
>
> http://www.ebay.de/itm/112435553232
>
> Its a non-profit offer, we just need the space.
>
> best,
> Joerg

Is it possible to get a copy of the Mincbasic and RT11 disk? willing to 
pay to get it for our Mincs.

thanks
Jim



DEC rack-mount AlphaServer 2100A

2017-05-29 Thread Paul Birkel via cctalk
If there's anyone out there with a rack-mount DEC AlphaServer 2100A - the
one with the underslung pair of power supplies -- I'd appreciate your help
in determining the 15-pin control-cable configuration for J3.  It may
require examining the other end of the "power supply control cable assembly"
P#17-04014-01, which is 24-pin (to handle the dual/redundant power supply
configuration).

 

Available hardware documentation is pretty sparse.  Physical examination of
an AlphaServer 2100A system backplane (54-24129-01) would certainly help!

 

While I'm pretty sure that I've figured out the +5V +- sense lines (pins
3-4), and the +3.3V +- sense lines (pins 15-14), I've failed to determine
the purpose of other control lines - most particularly which one(s) turn it
on.  Pins 10 is suspect, but there's no obvious reference point for voltage
measurement or evidence whether it should be shorted to another pin, or .
something else.

 

There's no control relay or other obvious mechanism.  The PCB is
dense-packed with surface-mount components on one side and power components
on the other; tracing circuits is a bear.

 

Applying AC starts up the 24VDC fans, but none of the four switchers kick in
:-<.

 

Thanks for any clues!

 

paul



RE: Kryoflux or Catweasle

2017-05-25 Thread Paul Birkel via cctalk
>-Original Message-
>From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of ben via cctech
>Sent: Thursday, May 25, 2017 1:32 AM
>To: cct...@classiccmp.org
>Subject: Re: Kryoflux or Catweasle
>
>On 5/24/2017 7:19 PM, allison via cctech wrote:
>
>> I have a load of all of those...  2901Cs the faster ones. The 2901 tends
>> to force
>> the flavor of the hardware and instructions toward microcoded machine.
>
>But if you want 9 or 18 bits, 2901 is not the answer.
>A 74181 can be tricked in to being used as 3 bit alu.
>
>
>Ben.

Can you tell more about the 3-bit trick?

-
paul



RE: KDF 8189 processor board foobared (ebay warning)

2017-05-21 Thread Paul Birkel via cctalk
-Original Message-
From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of allison via 
cctech
Sent: Sunday, May 21, 2017 8:38 AM
To: cct...@classiccmp.org
Subject: Re: KDF 8189 processor board foobared (ebay warning)

On 05/20/2017 06:40 PM, jim stephens via cctech wrote:
>
>
> On 5/20/2017 3:20 PM, Paul Anderson wrote:
>> Hi Jim,
>>
>> I have the M8189 11/23+ boards here. call me tonight if you want.
>>
>> Paul
>>
> Are there any reasonably priced boards with the processor and memory
> of either the KDF or KDJ processors?

KDJ11-D (M7554) aka PDP-11/53  "All you need to add is a hard drive controller."

See: http://home.windstream.net/engdahl/kdj11.htm 

-



PDP-11/20 in Iowa (x3)

2017-03-27 Thread Paul Birkel via cctalk
http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20-
units-today

 

Need some lovin'.  Not near enough to here .

 

-