Computer books and PC parts clearance

[Dave Mitton via cctalk]

On this list, about 2.5 years ago, I offered up a bunch of misc computer books, 
PC parts, and software, for the cost of shipping, but then I got occupied with 
some other parts of life, and didn't follow through with those that responded.

I still have the emails and will let those that answered before get first dibs.
I will follow up with them in a day or so, if their emails still work.

But I have added more stuff to the list, including some misc hardware bits.
The current list is on http://dave.mitton.com/computer_clearance.html

I will give priority to the first, but if you don't come through with pickup or 
shipping costs, 
they will go to the next in line.

I am hoping to move this stuff out in the next few months.

Thanks for your patience, hope some of this is useful.
Dave.

Sent from Mail for Windows 10

Re: Source code listings from REDAC PDP-based PCB layout system.

[Paul Koning via cctalk]

> On Oct 1, 2018, at 6:17 PM, Al Kossow via cctalk  
> wrote:
> 
> I'm interested.
> PDP-15 software in any form is pretty rare
> 
> On 10/1/18 7:33 AM, Mattis Lind via cctalk wrote:
>> I have a set of around 5 to 8 binders with printed source code listings
>> from a PDP-15 system. The listings appear to be from a REDAC SOFTWARE
>> LIMITED PCB CAD system. The name of the software seems to be REDAL 3 MARK
>> 7. There are dates on the listings in the range 74 and 75.

I wonder if that's what DEC used internally?  I remember some PDP15 systems 
around Merrimack NH that I was told were used for that.  They had big displays, 
VS60 tubes or similar.

paul

Re: Source code listings from REDAC PDP-based PCB layout system.

[Randy Dawson via cctalk]

I think this is Racal-Readac, one of the early PCB software vendors (from the 
UK).
Later bought up by Zunken (the big three are Cadence, Mentor, Zunken).

Is the source straight PDP-15 assembly, or a mix with another high level 
language?

It would be great to look at this, I hope it makes it to bitsavers...

Randy

From: cctalk  on behalf of Al Kossow via cctalk 

Sent: Monday, October 1, 2018 3:17 PM
To: cctalk@classiccmp.org
Subject: Re: Source code listings from REDAC PDP-based PCB layout system.

I'm interested.
PDP-15 software in any form is pretty rare

On 10/1/18 7:33 AM, Mattis Lind via cctalk wrote:
> I have a set of around 5 to 8 binders with printed source code listings
> from a PDP-15 system. The listings appear to be from a REDAC SOFTWARE
> LIMITED PCB CAD system. The name of the software seems to be REDAL 3 MARK
> 7. There are dates on the listings in the range 74 and 75.
>
> https://i.imgur.com/m1ji9uR.jpg
> https://i.imgur.com/SzaiH78.jpg
>
> First of all does anyone has more info on the REDAL software from REDAC?
>
> Then secondly is there anyone interested in these binders with listings? I
> think the quality of printout is good enough to do OCR on.
>
> Note that there is no guarantee that these are the complete set of binders
> with listings.
>
> /Mattis
>

Re: A few more products added

[Al Kossow via cctalk]

Do you know of anyone who has any Telex Microswitch keyboards?
I have a Telex 276 I'm trying to restore, and of course it came without a 
keyboard.

Re: Source code listings from REDAC PDP-based PCB layout system.

[Al Kossow via cctalk]

I'm interested.
PDP-15 software in any form is pretty rare

On 10/1/18 7:33 AM, Mattis Lind via cctalk wrote:
> I have a set of around 5 to 8 binders with printed source code listings
> from a PDP-15 system. The listings appear to be from a REDAC SOFTWARE
> LIMITED PCB CAD system. The name of the software seems to be REDAL 3 MARK
> 7. There are dates on the listings in the range 74 and 75.
> 
> https://i.imgur.com/m1ji9uR.jpg
> https://i.imgur.com/SzaiH78.jpg
> 
> First of all does anyone has more info on the REDAL software from REDAC?
> 
> Then secondly is there anyone interested in these binders with listings? I
> think the quality of printout is good enough to do OCR on.
> 
> Note that there is no guarantee that these are the complete set of binders
> with listings.
> 
> /Mattis
> 

A few more products added

[Electronics Plus via cctalk]

Alps AEK II switches https://bit.ly/2Ni2s1H

Wyse ASCII  https://bit.ly/2QkkSk7

Wyse PCE https://bit.ly/2P2vqEp

 

 

Cindy Croxton

Electronics Plus

1613 Water Street

Kerrville, TX 78028

830-370-3239 cell

sa...@elecplus.com

 



---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Re: VT100's

[Warner Losh via cctalk]

On Mon, Oct 1, 2018 at 1:17 PM Tapley, Mark via cctalk <
cctalk@classiccmp.org> wrote:

> > On Oct 1, 2018, at 1:55 PM, Paul Koning  wrote:
> >
> >> On Oct 1, 2018, at 2:46 PM, Ethan Dicks via cctalk <
> cctalk@classiccmp.org> wrote:
> >>
> >> On Thu, Sep 6, 2018 at 2:16 PM, Tapley, Mark via cctalk
> >>> ...I have to say my favorite VT-100-alike is a Rainbow. One box (plus
> monitor plus the dreaded LK-201), three functions in the collection: VT-100
> emulation (not perfect but not bad), CPM-80/86 (is that one or two
> functions?), MS-DOS 3.11b.
> >>
> >> I have only recently learned of the built-in VT100 emulation.  I'm
> >> curious how it's "not perfect".
> >
> > I don't know that particular one.  But a possible answer would be:
> because the VT100 had a bunch of strange corner cases that were not
> documented and not necessarily well understood.
> >
> > DEC created an internal standard for terminal behavior; that
> specification was extremely detailed and very well written.  It became the
> functional specification for the VT200 series.  I used it to write the
> terminal emulator for RSTS on the Pro.  It was understood at the time that
> this spec was close to VT100 behavior (apart from 8 bit characters instead
> of 7) but not exactly that, and deliberately so.
> >
> > Similar things have happened in other places.  There is DDCMP, and "DMC
> compatibility mode" which is best described as "DDCMP with certain bugs".
> It hard to find a reasonable description of the latter.  If you want to do
> DDCMP, you're best off implementing the spec (which is easy) but if you do,
> it won't work 100% with the "high speed" variant of the DMC-11.
> >
> >   paul
>
> I can’t remember the exact VT-100 / Rainbow differences. I do remember
> seeing a description (usenet-post kind of thing, not an official document)
> that detailed them, and deciding the Rainbow emulation was “good enough”
> for my purposes. If I can find that document (later this week) I’ll try to
> post or re-post it, but I’m submerged by $work at the moment. If someone
> else comes up with it before me, I’ll be glad!


The TRM had a list of differences in it. They were both highly esoteric and
generally not an issue for anything I ever ran on my Rainbow for the decade
or so I used it. I don't think it mentioned DDCMP though.

Warner

Re: VT100's

[Tapley, Mark via cctalk]

> On Oct 1, 2018, at 1:55 PM, Paul Koning  wrote:
> 
>> On Oct 1, 2018, at 2:46 PM, Ethan Dicks via cctalk  
>> wrote:
>> 
>> On Thu, Sep 6, 2018 at 2:16 PM, Tapley, Mark via cctalk
>>> ...I have to say my favorite VT-100-alike is a Rainbow. One box (plus 
>>> monitor plus the dreaded LK-201), three functions in the collection: VT-100 
>>> emulation (not perfect but not bad), CPM-80/86 (is that one or two 
>>> functions?), MS-DOS 3.11b.
>> 
>> I have only recently learned of the built-in VT100 emulation.  I'm
>> curious how it's "not perfect".
> 
> I don't know that particular one.  But a possible answer would be: because 
> the VT100 had a bunch of strange corner cases that were not documented and 
> not necessarily well understood.
> 
> DEC created an internal standard for terminal behavior; that specification 
> was extremely detailed and very well written.  It became the functional 
> specification for the VT200 series.  I used it to write the terminal emulator 
> for RSTS on the Pro.  It was understood at the time that this spec was close 
> to VT100 behavior (apart from 8 bit characters instead of 7) but not exactly 
> that, and deliberately so.
> 
> Similar things have happened in other places.  There is DDCMP, and "DMC 
> compatibility mode" which is best described as "DDCMP with certain bugs".  It 
> hard to find a reasonable description of the latter.  If you want to do 
> DDCMP, you're best off implementing the spec (which is easy) but if you do, 
> it won't work 100% with the "high speed" variant of the DMC-11.
> 
>   paul

I can’t remember the exact VT-100 / Rainbow differences. I do remember seeing a 
description (usenet-post kind of thing, not an official document) that detailed 
them, and deciding the Rainbow emulation was “good enough” for my purposes. If 
I can find that document (later this week) I’ll try to post or re-post it, but 
I’m submerged by $work at the moment. If someone else comes up with it before 
me, I’ll be glad!
- Mark

Re: VT100's

[Paul Koning via cctalk]

> On Oct 1, 2018, at 2:46 PM, Ethan Dicks via cctalk  
> wrote:
> 
> On Thu, Sep 6, 2018 at 2:16 PM, Tapley, Mark via cctalk
>  wrote:
>>I have more desire to own systems to play on than I have space or 
>> time.
> 
> True for most of us, I suspect.
> 
>>Addressing the former, I have to say my favorite VT-100-alike is a 
>> Rainbow. One box (plus monitor plus the dreaded LK-201), three functions in 
>> the collection: VT-100 emulation (not perfect but not bad), CPM-80/86 (is 
>> that one or two functions?), MS-DOS 3.11b.
> 
> I have only recently learned of the built-in VT100 emulation.  I'm
> curious how it's "not perfect".

I don't know that particular one.  But a possible answer would be: because the 
VT100 had a bunch of strange corner cases that were not documented and not 
necessarily well understood.

DEC created an internal standard for terminal behavior; that specification was 
extremely detailed and very well written.  It became the functional 
specification for the VT200 series.  I used it to write the terminal emulator 
for RSTS on the Pro.  It was understood at the time that this spec was close to 
VT100 behavior (apart from 8 bit characters instead of 7) but not exactly that, 
and deliberately so.

Similar things have happened in other places.  There is DDCMP, and "DMC 
compatibility mode" which is best described as "DDCMP with certain bugs".  It 
hard to find a reasonable description of the latter.  If you want to do DDCMP, 
you're best off implementing the spec (which is easy) but if you do, it won't 
work 100% with the "high speed" variant of the DMC-11.

paul

Re: VT100's

[Ethan Dicks via cctalk]

On Sat, Sep 8, 2018 at 2:41 PM, Zane Healy via cctalk
 wrote:
>
>> On Sep 7, 2018, at 10:55 PM, Josh Dersch via cctalk  
>> wrote:
>>
>> TI made a clamshell portable VT220-compatible terminal with an LCD screen,
>> the Travelmate LT220.  It's very nice, the LCD is high-contrast (but no
>> backlight) and it even has a built in 2400bps modem.  I believe it can run
>> off of a battery as well.  It's very handy.
>>
>> There's a picture of one near the bottom of this page:
>> http://ummr.altervista.org/sistemi_x86.htm 
>> 
>>
>> - Josh
>
> That’s an interesting terminal.  Totally pointless for me, but it would be 
> cool.

I have a Zenith ZFL-181-93 that I treat like the LT220 - it boots to
DOS 3.3 off of 3.5" 720K floppy and the only application on it is
Kermit.  It makes a nice portable terminal that way that if I ever got
around to it, I could replace the stack of NiCd C-cells and run off
battery power, but it works fine from wall power.

I think it would be cool to have an LCD dumb terminal but an old 8088
LCD laptop that runs DOS and Kermit is the next best thing.  One thing
I can do with the Zenith is run a Xircom Pocket Ethernet adapter off
the printer port and (with the right packet driver shim) do Kermit
over TCP/IP, not just over serial.  That's very nice in a closed
environment where one can tolerate using telnet.

-ethan

Re: VT100's

[Ethan Dicks via cctalk]

On Thu, Sep 6, 2018 at 2:16 PM, Tapley, Mark via cctalk
 wrote:
> I have more desire to own systems to play on than I have space or 
> time.

True for most of us, I suspect.

> Addressing the former, I have to say my favorite VT-100-alike is a 
> Rainbow. One box (plus monitor plus the dreaded LK-201), three functions in 
> the collection: VT-100 emulation (not perfect but not bad), CPM-80/86 (is 
> that one or two functions?), MS-DOS 3.11b.

I have only recently learned of the built-in VT100 emulation.  I'm
curious how it's "not perfect".

> Having a Rainbow has pretty much forestalled any desire to get a 
> “real” VT-100 for me.

I've had real VT-100s (VT-101s, VT102s...) for quite some time, but
because of partial compatibility with other systems (RX50s along with
memory map differences) I was never big on running a Rainbow.  These
days, though, I'm interested in them as CP/M boxes more than running
DOS, just because it's trivial to set up a white box to run DOS but
there aren't that many kinds of CP/M machines after the S-100 era.

So a single box that is itself a decent VT-100 and runs CP/M is
suddenly worth some desk space.

And because it's my focus, the first thing I want to run on any CP/M
box is going to be text adventures (Infocom and Scott Adams for
certain).

-ethan

P.S. - and the same line of reasoning has the VT-180 on my radar but
I've never seen one go by close enough or cheap enough to jump on.

RE: DG/UX install media

[Electronics Plus via cctalk]

Did you ask Congruity?
SEAN BRADY 
Operations 

sbr...@congruity.com
Direct: 781-829-0140 | Mobile: 339-788-8080

56 Pembroke Woods Drive | Pembroke, MA 02359

Sean is an old friend of mine; tell him I said hi. He has been doing DG for
over 20 years.

Cindy

-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of alan--- via
cctalk
Sent: Wednesday, September 26, 2018 12:05 PM
To: cctalk@classiccmp.org
Subject: DG/UX install media

Does anyone have install media for DG/UX targeted for M88100 CPUs
(specifically Aviion)?  Any version 

Thanks, 

-Alan


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Source code listings from REDAC PDP-based PCB layout system.

[Mattis Lind via cctalk]

I have a set of around 5 to 8 binders with printed source code listings
from a PDP-15 system. The listings appear to be from a REDAC SOFTWARE
LIMITED PCB CAD system. The name of the software seems to be REDAL 3 MARK
7. There are dates on the listings in the range 74 and 75.

https://i.imgur.com/m1ji9uR.jpg
https://i.imgur.com/SzaiH78.jpg

First of all does anyone has more info on the REDAL software from REDAC?

Then secondly is there anyone interested in these binders with listings? I
think the quality of printout is good enough to do OCR on.

Note that there is no guarantee that these are the complete set of binders
with listings.

/Mattis

Re: R: Wanted: LTO-5 tapes (used?)

[Ethan via cctalk]

Sorry to intrude,
Those are LTO-1 tapes (I do have two for an hp drive I have)


No worries, the tapes I am after are LTO-5 / Ultrium-5


--
: Ethan O'Toole

R: Wanted: LTO-5 tapes (used?)

[Mazzini Alessandro via cctalk]

Sorry to intrude, 

Those are LTO-1 tapes (I do have two for an hp drive I have)

-Messaggio originale-
Da: cctalk [mailto:cctalk-boun...@classiccmp.org] Per conto di Nico de Jong
via cctalk
Inviato: lunedì 1 ottobre 2018 13:40
A: et...@757.org; General Discussion: On-Topic and Off-Topic Posts
Oggetto: Re: Wanted: LTO-5 tapes (used?)

Sorry Ethan, the cassettes I have, are marked HP ultium 200 GB, C7971A.
I have 6 or so, plus a cleaning cassette
Can you usem them?
Regards
Nico
- Original Message - 
From: "Ethan via cctalk" 
To: 
Sent: Friday, September 28, 2018 5:14 PM
Subject: Wanted: LTO-5 tapes (used?)


>
> Looking for used LTO-5 tapes that I can erase and add to my library at 
> home for backing up spinning disk archives. I can use LTO-4 as well but 5 
> gives the most bang for buck.
>
> HMU
>
>  - Ethan
>
> --
> : Ethan O'Toole
>
> 

--
I am using the free version of SPAMfighter.
SPAMfighter has removed 17436 of my spam emails to date.
Get the free SPAMfighter here: http://www.spamfighter.com/len

Do you have a slow PC? Try a Free scan
http://www.spamfighter.com/SLOW-PCfighter?cid=sigen

Re: Wanted: LTO-5 tapes (used?)

[Nico de Jong via cctalk]

Sorry Ethan, the cassettes I have, are marked HP ultium 200 GB, C7971A.
I have 6 or so, plus a cleaning cassette
Can you usem them?
Regards
Nico
- Original Message - 
From: "Ethan via cctalk" 
To: 
Sent: Friday, September 28, 2018 5:14 PM
Subject: Wanted: LTO-5 tapes (used?)


>
> Looking for used LTO-5 tapes that I can erase and add to my library at 
> home for backing up spinning disk archives. I can use LTO-4 as well but 5 
> gives the most bang for buck.
>
> HMU
>
>  - Ethan
>
> --
> : Ethan O'Toole
>
> 

--
I am using the free version of SPAMfighter.
SPAMfighter has removed 17436 of my spam emails to date.
Get the free SPAMfighter here: http://www.spamfighter.com/len

Do you have a slow PC? Try a Free scan 
http://www.spamfighter.com/SLOW-PCfighter?cid=sigen

Re: Which Operating System for my DCC-116 E / Entrex 480 / Nixdorf 620 / Data General Nova 1200 clone ?

[Dominique Carlier via cctalk]

Hi !

In fact these terminals (named "Data/Scope Keystations")

http://www.zeltrax.com/classiccmp_forum/palmgren/terminal_identification.jpg

are dedicated and apparently non-configurable, connected through exotic 
connectors (for which I do not have, of course, the pinout), and using, 
I think, a synchronous serial type link for data transmission. It is 
possible to connect 12 terminals on my machine through two boards 
(multiplexer type).


Here is what the connectors looks like

http://www.zeltrax.com/classiccmp_forum/palmgren/connector.jpg

These terminals have nothing autonomous, I mean that if I do not proceed 
to a warm start, or a fresh installation with tape drive via the cold 
start procedure, the terminals do not display anything at all.


There are two empty slots, one is named TTY (slot 3)  and the other 
COMMO (slot 9). Again I may be wrong but for an asynchronous 
communication I think the TTY board is required. The board "COMMO" maybe 
not because - I think - it was only used to communicate with other 
systems including the IBM 3270.


Apparently, the board with witch it should be possible to connect a 
console terminal (eventually a PC via a standard RS232 serial port) is 
missing : DG serial port board (DG Model 4007/4010) or equivalent


But all new ideas are welcome ;-)

Dominique


On 1/10/2018 09:11, AJ Palmgren wrote:
Dominique, I just had an idea.  May I ask what 
type/style/pin-configuration of plug is on the back connector of your 
1 working terminal?


Not that the plug matters as much, but I'm thinking about an easy way 
to build a quick interface to reverse engineer the protocol (and 
pinouts/cabling) that these terminals use.


Besides, that would be a FASCINATING thing for me to learn about this 
system, anyway.


And I have some diagnostic hardware that I'd like to contribute to 
this portion, as well.


On Sun, Sep 30, 2018 at 2:16 AM AJ Palmgren > wrote:


Well, Dominique, I would encourage you to not give up.  You have
the only functional version of this system that anyone has ever
reported over the Internet in recent times (as far as I've found),
and I would love to help in any way that I can.

I also am quite busy, as are you, but this system has come to hold
a important place in my desire to preserve vintage equipment.

The complexity of the situation may be beyond my current skill set
as well, however, I'd be very happy to contribute to the diagnosis
in any way I can.  I've come up with some pretty "unorthodox"
methods, over the past few years, of reverse-engineering the way
older vintage computer components talk to each other,and one of
those tricks just might be the key to unlocking this mystery.

Please keep us posted here.  There are many here far more
knowledgeable and experienced than I, with this vintage of
equipment.  It's so fascinating!

Best always,
AJ



On Wed, Sep 26, 2018 at 4:50 AM Dominique Carlier mailto:d...@skynet.be>> wrote:

Hello AJ

Thank you for your interest in my project ;-)

Unfortunately I was stopped by some technical problems.

As I was studying ways to create bootable tapes for my DCC-166
when it started to present troubles.

It started with illegible characters (like a bad charset) on
the only operational terminal I have. Despite this he
continued to boot from the Diablo 44.
Then I tried to reinstall from a bootable tape with DIDOS, the
operating system of Nixdorf, and there it does not work anymore.

Is it because the terminal is not properly working? Is it
because there is a problem with the nine track tape? Is the
disc of my Diablo 44 altered? Is it all problems are from a
PSU problem? I do not know.
I cleaned the tape drive, the disk platter, the heads, I clean
all connectors (boards), checked what I could at the level of
power supply. I still have not found the cause of the
breakdown(s).

I have not had the time yet but I am going to create a new
topic on cctalk about this, unfortunately, I already feel that
this troubleshooting will require knowledge beyond my skills.

Well, we'll see ;-)

Dominique


On 25/09/2018 08:01, AJ Palmgren wrote:

Dominique,

Might you have any updates on your Nixdorf 620 / Entrex 480
system?  I am quite interested, and it's been a while since
I've seen any email with these keywords here, from you or anyone.

Someday, it is my hope that I might take a tour of your
system in Belgium, on my next trip to the region, if you
would be open to this.  I am quite fascinated by this rare
dinosaur of a system.

I have begun to archive your work, and everything else I've
ever found about the Entrex 480 systems here:

Re: Which Operating System for my DCC-116 E / Entrex 480 / Nixdorf 620 / Data General Nova 1200 clone ?

[AJ Palmgren via cctalk]

Dominique, I just had an idea.  May I ask what type/style/pin-configuration
of plug is on the back connector of your 1 working terminal?

Not that the plug matters as much, but I'm thinking about an easy way to
build a quick interface to reverse engineer the protocol (and
pinouts/cabling) that these terminals use.

Besides, that would be a FASCINATING thing for me to learn about this
system, anyway.

And I have some diagnostic hardware that I'd like to contribute to this
portion, as well.

On Sun, Sep 30, 2018 at 2:16 AM AJ Palmgren  wrote:

> Well, Dominique, I would encourage you to not give up.  You have the only
> functional version of this system that anyone has ever reported over the
> Internet in recent times (as far as I've found), and I would love to help
> in any way that I can.
>
> I also am quite busy, as are you, but this system has come to hold a
> important place in my desire to preserve vintage equipment.
>
> The complexity of the situation may be beyond my current skill set as
> well, however, I'd be very happy to contribute to the diagnosis in any way
> I can.  I've come up with some pretty "unorthodox" methods, over the past
> few years, of reverse-engineering the way older vintage computer components
> talk to each other,and one of those tricks just might be the key to
> unlocking this mystery.
>
> Please keep us posted here.  There are many here far more knowledgeable
> and experienced than I, with this vintage of equipment.  It's so
> fascinating!
>
> Best always,
> AJ
>
>
>
> On Wed, Sep 26, 2018 at 4:50 AM Dominique Carlier  wrote:
>
>> Hello AJ
>>
>> Thank you for your interest in my project ;-)
>>
>> Unfortunately I was stopped by some technical problems.
>>
>> As I was studying ways to create bootable tapes for my DCC-166 when it
>> started to present troubles.
>>
>> It started with illegible characters (like a bad charset) on the only
>> operational terminal I have. Despite this he continued to boot from the
>> Diablo 44.
>> Then I tried to reinstall from a bootable tape with DIDOS, the operating
>> system of Nixdorf, and there it does not work anymore.
>>
>> Is it because the terminal is not properly working? Is it because there
>> is a problem with the nine track tape? Is the disc of my Diablo 44 altered?
>> Is it all problems are from a PSU problem? I do not know.
>> I cleaned the tape drive, the disk platter, the heads, I clean all
>> connectors (boards), checked what I could at the level of power supply. I
>> still have not found the cause of the breakdown(s).
>>
>> I have not had the time yet but I am going to create a new topic on
>> cctalk about this, unfortunately, I already feel that this troubleshooting
>> will require knowledge beyond my skills.
>>
>> Well, we'll see ;-)
>>
>> Dominique
>>
>> On 25/09/2018 08:01, AJ Palmgren wrote:
>>
>> Dominique,
>>
>> Might you have any updates on your Nixdorf 620 / Entrex 480 system?  I am
>> quite interested, and it's been a while since I've seen any email with
>> these keywords here, from you or anyone.
>>
>> Someday, it is my hope that I might take a tour of your system in
>> Belgium, on my next trip to the region, if you would be open to this.  I am
>> quite fascinated by this rare dinosaur of a system.
>>
>> I have begun to archive your work, and everything else I've ever found
>> about the Entrex 480 systems here:
>>
>> http://Entrex480.com
>>
>> Like your system restoration, it is a work in progress...
>>
>> Best always,
>> AJ
>>
>>
>>
>> On Tue, Jan 16, 2018 at 9:52 AM Dominique Carlier via cctalk <
>> cctalk@classiccmp.org> wrote:
>>
>>> I understand very well your concerns about sending by mail rare data on
>>> magnetic media. It's a pity that I live so far away (in Belgium), even
>>> if I have not finished to configure my machines, at the end I should be
>>> able to write anything on any media, and concerning magnetic tapes it
>>> will be from 500 to 6250 bpi.
>>>
>>> If one day you find in your stock a communication board for Nova 1200
>>> that you do not use please note that I am a potential buyer.
>>>
>>> In the meantime, I have to find solutions to reopen all my old monsters
>>> to the outside world ;-)
>>>
>>> Dominique
>>>
>>> On 16/01/2018 15:19, Jay West via cctalk wrote:
>>> > The 'other Jay' wrote...
>>> > --
>>> > Diagnostics for DG systems are notoriously difficult to find.  I have
>>> a few, in listing format.
>>> > --
>>> > I have a full official DG-issued/labeled original diagnostic OS tape.
>>> I do believe it is at 800bpi though. If I had an 800 bpi drive (everything
>>> I have is 1600-6250) I'd image it for everyone.
>>> >
>>> > I have a nice S/130 rack that I was almost finished restoring till
>>> Bruce Ray stopped responding. It's been sitting in my workshop for years
>>> now and I may have to just get rid of it. Next to it is a pile of about 8
>>> nova 800/1200 cpus (all stuffed with boards) that I was going to start on
>>> next, but