> On Jan 2, 2022, at 4:20 PM, Chris Zach via cctalk
> wrote:
>
> On 1/2/2022 6:21 PM, Mark J. Blair via cctalk wrote:
>> I am seriously lusting after that VAX-11/780 system on eBay
> I keep thinking about it, but no. The 780 was neat from a historical
> perspect
In the unlikely event that I win the lottery before that 11/780 batch sells,
I'm going to buy it, buy a box truck, go pick it up, and then leave the box
truck parked outside while I build a new building to put it all in. :D
--
Mark J. Blair
Blog:https://www.nf6x.net
Git: https
8C transmitter, because I was working in the GPS industry at
the time, and I bid the GPS L1 frequency in MHz. The second bidder just missed
outbidding me, and I got it for my maximum bid.
--
Mark J. Blair
Blog:https://www.nf6x.net
Git: https://gitlab.com/users/NF6X/groups
HECnet: DOGPAK::MBLAIR
Twitter: @nf6x
the UNIBUS expansion bus from that seller to add to my 730,
but I think should leave it available for the buyer of that 780.
--
Mark J. Blair
Blog:https://www.nf6x.net
Git: https://gitlab.com/users/NF6X/groups
HECnet: DOGPAK::MBLAIR
Twitter: @nf6x
ements cannot be
trusted.
--
Mark J. Blair
Blog:https://www.nf6x.net
Git: https://gitlab.com/users/NF6X/groups
HECnet: DOGPAK::MBLAIR
Twitter: @nf6x
first:
https://www.mcmaster.com/gas-struts/
--
Mark J. Blair
Blog:https://www.nf6x.net
Git: https://gitlab.com/users/NF6X/groups
HECnet: DOGPAK::MBLAIR
Twitter: @nf6x
I'm not at home with the machine now, but if I remember (or get reminded in the
next day or three), I'll try to take some pictures of my PDP-11/34A to help you
out.
--
Mark J. Blair, NF6X
https://www.nf6x.net/
I'm interested in running earlier VMS versions on my 11/730.
--
Mark J. Blair, NF6X
https://www.nf6x.net/
rybody is. Sigh.
--
Mark J. Blair, NF6X
https://www.nf6x.net/
re's a page with details, including the wiring of that H8571 adapter:
https://www.lammertbies.nl/comm/cable/dec-mmj#h71j
--
Mark J. Blair, NF6X
https://www.nf6x.net/
.
Agreed! It's great. Even when I don't use it directly, the ImageDisk file
format is good for a lot of stuff I do, such as archival of non-copy-protected
disks for machines like the various Tandy/Radio Shack systems in my collection.
I wrote Python code for working with the .IMD files on my Mac.
--
Mark J. Blair
http://www.nf6x.net/
> On Mar 21, 2020, at 7:20 AM, R. Voorhorst via cctalk
> wrote:
>
> It looks there is some decnet on the disk.
> Exec list gives phase-III router:
Which VMS release introduced DECnet Phase IV?
--
Mark J. Blair
http://www.nf6x.net/
> On Nov 28, 2019, at 2:40 AM, Rod Smallwood via cctalk
> wrote:
>
> Hello Everybody
>
> After a two year pause due to my wife having been ill but now fully
> recovered I am back to starting making pdp-8 front panels again
Welcome back!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
The list isn’t broken. This thread started off-list, and the Chuck CC’d the
list late in the thread.
--
Mark J. Blair
http://www.nf6x.net
ands. I just typed in my name for the
company name when I registered, and their site seemed happy with that.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
tape media out of the original cartridge,
abandoning the &$@#! drive belt concept. But that's going to be a fairly big
project, so I haven't made progress on it beyond brainstorming so far.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
Please see to it that those tapes get
archived! Especially the 730 ones, for my own selfish interests as a 730 owner.
:)
--
Mark J. Blair, NF6X
http://www.nf6x.net/
em manufacturer, with no
surviving systems in existence? Which were included just in case somebody might
need them, but were never used in practice?
I'd appreciate it if anybody can provide insight into this, such as examples of
systems which required non-omnipresent and/or non-default configuration optio
olyester film dielectric. But if I'm not mistaken, they don't; they
have *paper* dielectric!
Aside from that one correction, I agree with everything else you wrote about
the likely failure mechanism of these evil little rectangles of compressed
smoke and fire.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
d be an engineer who works in the field of
power generation and distribution. What term is used there for an engineer who
works in fields of general electronics?
--
Mark J. Blair, NF6X
http://www.nf6x.net/
ter History Museum in Mountain
> View, California. Attached is a flyer on the device.
I don't think that the flyer made it into the mailing list posting. From the
text of your email, this sounds pretty cool.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
ck tapes yet, but I've
certainly been frustrated with binder bleed and/or sticky shed when I tried to
mess with a TK50 drive.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
a license refresh every 27 years? It's
ransomware, I say!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
t I may have made that up), faster PROMs may have been needed
in other places where they were used as logic gates.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
programming data.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
will need, but I'm
still interested in the general problem of replacing defective bipolar PROMs
and making new ones, when I can't just order blanks from Digi-Key.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
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!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
familiar with what the triple option is.
Is it something I should lust after?
--
Mark J. Blair, NF6X
http://www.nf6x.net/
://www.nf6x.net/2019/06/emulex-sc11-disk-controller-documentation-wanted/
--
Mark J. Blair, NF6X
http://www.nf6x.net/
s of the tape.
I don't recall seeing one of those in either of the computer rooms I worked in
as a student back in the late 1980s. I would love to get my hands on one (or
make one?) now.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
about business
stuff like that.
Yesterday I saw a company car for a presumed IT service company called Telnet
something or other. I don’t think I would rely on Telnet for my information
security needs.
--
Mark J. Blair
http://www.nf6x.net
vailable and
> takes seconds
> to install for a perfect fit.
Thanks! That's bound to be helpful advice... if not now, then someday in the
future.
--
Mark J. Blair
http://www.nf6x.net/
> On Jun 1, 2019, at 15:27, John H. Reinhardt via cctalk
> wrote:
>
> Congrats!! Should be fun to play with. I just picked up a Micro PDP-11/53
> which is about the biggest I can fit into my office/computer room. lol
>
Neat! I’d like to get a PDP-11 in that form factor someday.
anyway, I offered to help out by hauling for both of us in
exchange for taking a skim off the top of the pile. It’ll be a busy weekend!
--
Mark J. Blair
http://www.nf6x.net
collector and using some of the boards I accumulated for it in
the 11/34A. I’m on the fence about that.
--
Mark J. Blair
http://www.nf6x.net
the brown panel between the tape drive and computer be a filler panel, or
part of the 11/34A? I don't know anything about the system configuration yet
other than what can be seen in that picture.
--
Mark J. Blair
http://www.nf6x.net/
Does anybody here recognize the make and model of this tape drive?
https://pbs.twimg.com/media/D7_mfdfUIAMcTly.jpg
--
Mark J. Blair, NF6X
http://www.nf6x.net/
first guess would be that a tape with
CNC machine programming would contain G code, and look like cryptic ASCII text.
I'm interested in hearing what you find.
--
Mark J. Blair
http://www.nf6x.net/
What a majestic system! When I saw the teaser picture of the backs of racks on
Twitter, I was assuming something in the 11/78x series. I don't know anything
about the 9440 yet, so it'll be fun to read up on that.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
, make sure that it can drive
both simultaneously. There are dual-output stations that have two outputs but
can only run one at a time, as well as ones which can drive two irons at once.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
that into lava.
Then scoop out the contaminated lava and drop it into a singularity.
Becase overkill is best kind of kill.
Did I miss any steps?
Oh, yeah: Play country music the whole time, to make it all more painful for
the drives.
--
Mark J. Blair
http://www.nf6x.net/
uses the same mechanism as my DEC TU81. My
workshop is the exact same style of steel arch building as your hangar, but
mine is a lot more full of junk than your hangar is! :D
--
Mark J. Blair
http://www.nf6x.net/
I'm sure relieved that you didn't say "DEC TU77 drive" and "near Riverside,
CA", because I lack spare cash, empty floor space, and impulse control! :)
--
Mark J. Blair
http://www.nf6x.net/
That’s it! The terminal I had was definitely the one in this picture:
http://bitsavers.org/pdf/dec/terminal/vt02/vt02_1.jpg
--
Mark J. Blair
http://www.nf6x.net
Thanks for digging that up! I had never managed to google up any details
before.
--
Mark J. Blair
http://www.nf6x.net
ipment external to the terminal?
--
Mark J. Blair
http://www.nf6x.net/
a long, long
time ago.
Does that old beast sound remotely familiar to anybody here? How hard should I
kick myself for not keeping it?
--
Mark J. Blair, NF6X
http://www.nf6x.net/
sk drive.
Looks like somebody got a good deal, with a closing price of $32. I hope the
pickup goes smoothly this weekend.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
It looks lovely, and I live just outside the Riverside city limits. I'm awfully
short on both money and indoor storage space right now, though. :(
--
Mark J. Blair, NF6X
http://www.nf6x.net/
in the cable.
--
Mark J. Blair
http://www.nf6x.net/
burned me
> after burning through the material of my slacks.
This reminds me of every TV show and movie I've seen where consoles begin
exploding on a space ship during a battle. All of this time, I thought that was
entirely a Hollywood fabrication!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
ler to replace
> the KLESI/U and RC25).
Back around the early 1990s, a friend of mine had an 11/725 and an 11/730 in
his apartment. One of then had a bad PROM chip, so he could only run one at a
time.
--
Mark J. Blair, NF6X
http://www.nf6x.net/
> On May 26, 2018, at 9:38 AM, Bruce Ray via cctalk <cctalk@classiccmp.org>
> wrote:
>
> And 'yes', Novas and its derivatives are still used today...
That's news to me, and it sounds quite interesting. Would you mind elaborating
on that?
--
Mark J. Blair, NF6X &l
ing nobody notices, but there
would always be a window of up to N minutes for other bidders to decide to
increase their losing bid. It would end up as a a hybrid of proxy bid + live
auction.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
> On Apr 26, 2018, at 14:25, Geoffrey Oltmans via cctalk
> wrote:
>
> TRS-80 Model II and 16, 68k based "business" machines
The Models II and 12 were Z80 based machines. The models 16 and 6000 were the
same Z80 based machines with 68k subsystems added via additional
computers which I’m also curious about, since they’re not so common
over here in the US.
--
Mark J. Blair <n...@nf6x.net>
http://www.nf6x.net
y years since I actually disassembled 1802 code
> that I'm not sure I still have the disassembler around.
Well, you're welcome to use dismantler on CDP1802 code! :)
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
whether to use dismantler vs. learning how to add CDP1802
support to IDA. I'm leaning towards the latter, because IDA is so much fancier
than dismantler is.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
as a dumb terminal for RTTY use, and even happier if I can do
anything fancier with it.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
ed in some sort of teletype or facsimile equipment.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
dard
feature vs. something cobbled together locally.
Good luck learning how to talk to it. I can think of a number of different
applications in which a physical interface like that might be nice.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
were made. I don't even know yet whether they were truly fielded, or
if they failed to be selected to fill the role that they were presumably
competing for.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
eed module are in the BPK72 manual.
I've seen those instructions. As I understand it, I may need to do that to
restore a module to operation if it's lost its seed. But if that has happened
to either of the two modules in my firmware cartridge already, then it's all
over.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
and removing the shipping hook, so I can
set stuff (such as a terminal?) on top of the system and then slide out the
drive to change packs.
Good luck!
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
that meant something to
anybody on the list.
I don't know anything about how to clean hard drive packs, and that's something
I'd like to learn about.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
> On Jan 27, 2018, at 10:23, Adrian Stoness via cctech <cct...@classiccmp.org>
> wrote:
>
> ipa as in beer?
Isopropyl alcohol. Not very good for drinking; even store-brand vodka in
plastic jugs is less harsh. :)
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
for it already. But since the RL02 drives use servo bursts on
the media, do they require realignment after removing and replacing the heads?
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
> On Jan 20, 2018, at 18:26, Paxton Hoag via cctalk
> wrote:
>
> This is a digitized HI8 tape of a walk through of an early Warehouse Sale I
> ran from 1995 to 1998. There is a small sections of collectable computers
> in the middle of the tape with a few others
> On Jan 13, 2018, at 08:52, Bill Gunshannon via cctalk
> wrote:
>
> So, where were all these people when I was trying to clean out
> my old house a couple years ago? I threw out piles of tapes of
> various formats because I couldn't find anyone to take them for
>
This looks pretty interesting! I think I've managed to miss previous discussion
of it. I wonder if it might also be useful in any of the QBUS MicroVAXen?
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
gt; the user's guide).
Ah, yes, I think that's what I did.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
hat's serving as a DECnet area router or a cluster disk
server just to swap a tape or disk pack is not ideal.
Anyway, the remote console feature appears to do exactly what I want. Yay!
--
Mark J. Blair, NF6X <n...@nf6x.net <mailto:n...@nf6x.net>>
http://www.nf6x.net/ <http://www.nf6x.net/>
rs to work perfectly. I don't know what I did wrong when I tried that
before. Thanks!
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
machine they're being mounted on.
--
Mark J. Blair, NF6X <n...@nf6x.net <mailto:n...@nf6x.net>>
http://www.nf6x.net/ <http://www.nf6x.net/>
J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
/785 although we have not yet tested it in this configuration.
If somebody would like to sell me a Massbus-equipped 780 or 785 system, I can
test that out for y'all. :)
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
es from other collectors soonish.
Has anybody gotten around to sharing CAD models for a 3D-printable PRM-85 case
yet, or shall I get to work on that task?
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
sibly apocryphal stories of computer users mistaking CD
drive trays for coffee cup holders, I can't help but wonder if anybody has ever
mistaken the metallic cartridge slot cavity of the Atari 400/800 for an ash
tray with a flip-up lid.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
I've also got a 9122C but I don't have the mass storage ROM so I can't use it
> with my 85. Right now I'm using it with my 9000 series 300.
I've just received my PRM-85, and it looks like I have leads on a couple of
different floppy drives now. I'll be happy to share my experiences.
--
Mark
t may be, compatible media for those drives commonly has "HD" printed
on the box and molded into the diskette's plastic jacket. It's a useful term
for identifying the compatible media.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
ia for machines like my Amigas and early
Macs.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
ect, which is, of course, the best kind of correct.
Well, if we're being pedantic, then we might also refer to the drives by their
unformatted capacity, as HP themselves sometimes did:
https://pbs.twimg.com/media/DOr81HpVQAAn-X5.jpg
That makes them 2-Mbyte drives. ;-)
--
Mark J. Blair, N
> On Nov 14, 2017, at 10:57 PM, Ed Sharpe via cctalk <cctalk@classiccmp.org>
> wrote:
>
> you have me real curious,as to what is in that padded hp case..
What are you referring to?
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
> On Nov 14, 2017, at 20:44, Ed Sharpe via cctalk wrote:
>
> remember too.. there were hpib 8 inch and 5 inch drives wish I had saved
> some!!!
Those would certainly interest me if I happen upon any at a price that I like.
Same goes for an HPIB 9 track tape
> On Nov 14, 2017, at 20:33, Ed Sharpe via cctalk wrote:
>
> ok back in my day.. I do not think 85 adressed modern drive of 1.44 meg..? so
> that was what I was going on.. yes if you can use 1.44 do so.. older new
> media hard to find...
I am still new to this HP-85
> On Nov 14, 2017, at 20:11, Ed Sharpe via cctalk wrote:
>
> wondervifcthec9122 drives,will work on 85?
>
I think I can guess what you meant to say there... :)
I’ve ordered a PRM-85 (a modern reprogrammable ROM drawer replacement) which
includes the HP-85B version of
> On Nov 14, 2017, at 7:24 PM, Ed Sharpe via cctalk <cctalk@classiccmp.org>
> wrote:
>
> try 9121 drives!!!. ed!
No, thanks. I'd like a 9122C drive.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
locational thing can be solved if you're willing to pack and ship. Do you have
any idea what might be wrong with the second drive?
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
ble IEEE-488 card for use with the HPDrive software. I'm
curious about the open source hp85disk project, and might build hardware to
work with it sometime. In any case, I'm interested in getting a 9122C drive.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
items available for swap or sale? I'm
located in southern California.
Those two items are at the top of my HP-85 want list, but I might also be
interested in other related bits such as the 82940A GPIO Interface, other
compatible HPIB mass storage, etc.
--
Mark J. Blair, NF6X <n...@nf6x.n
> On Nov 6, 2017, at 10:21, Aaron Jackson via cctalk
> wrote:
>
> I based my terminator off Mark
> Blair's RL02 to USB project:
>
> https://github.com/NF6X/RL02-USB/blob/master/pcbs/RL02-USB-terminator/RL02-USB-terminator.pdf
Hi there! Just one warning: My project
IIc.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
t, but
that's on my growing "one of these days" list. The drives had internal
controllers and brains, and connected to the computer over an RS-232 interface.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
able to get at least one Convex up and running
> ConvexOS.
That is really cool, and it sounds like you have all of your barn heating needs
sorted out, too!
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
for its designed
purpose? :)
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
nd/or USB and/or network interface to get data and commands on and off,
and driver stacks for all of that stuff. I could also get there with a Xilinx
Zynq family device, but at 2x or more cost vs. a BeagleBone.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
Data Products 2230 this weekend.
Oooh, congratulations! I don't have a proper line printer yet, though I have a
number of small dot matrix printers and I can print on wide greenbar with my
LA120. I still hold out hope that I might find an LP32 someday to go with my
11/730.
--
Mark J. Blair, NF6X <n...@nf6x.net>
http://www.nf6x.net/
ny of
> them depend upon first-character FORTRAN carriage control.
I have downloaded the archive. I'll need to see if I have anything sitting
around that understands the carriage control, or else hack up a quick script to
convert the files to plain line-delimited text. Thanks!
--
Mark J.
r setup.
Oh, it's on my get-around-to-it list. I'll start out experimenting with that
random tape that has already shed a lot of oxide. If I can get it to load and
rewind without sticking to the heads and rollers, then I'll know I have the
parameters worked out.
--
Mark J. Blair, N
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