cents that get rounded back to the bank and sends
10% to their own account. Now, there are so many really
serious ways fraudsters can steal from banks and their
customers that nobody is too worried about that sort of
inside job.
Jon
bad or has a broken wire or bad sensor conditioning circuit.
If you have drawings for this drive, it should be easy to
follow this circuit. If not, then you will have to find
drawings and tech info. Hopefully, bitsavers has what you need.
Jon
On 4/30/24 12:37, Dominique Carlier via cctalk wrote:
Thanks for your response Jon :!
The technical documentation is available on Bitsavers here:
http://www.bitsavers.org/pdf/diablo/disk/model_40/81603_Diablo4xMaint_Apr75.pdf
But also here:
https://www.wang2200.org/docs/external
The emacs
editor on unix-related systems, (and several other editors
on Linux hide emacs from you, but it is the editing engine
down underneath.) AI geeks use Lisp for a variety of things.
Jon
1976
with paper tape. I then got a floppy drive, and later a
Memorex 10 MB Winchester drive. I did a LOT of programming
in assembly language but also did larger programs like cross
assemblers in Pascal.
Yes, I know a lot of people programmed in BASIC, but I
didn't find it very good.
Jon
On 5/4/24 10:21, W2HX via cctalk wrote:
I wonder how well that machine would do at bitcoin mining
Umm, it will consume about 4000 Dollars of electricity per
day! That is not counting the cooling required, just the
power input. that's about $15 million per year.
Jon
attempts assume
you mean RS-232). The logic levels are 12 V or so, so not
quite TTL compatible.
Jon
older guys demonstrating PDP-8's,
Data General Novas and similar vintage gear. Then TONS of
TRS-80s, Commodores, etc. I'm 73, by the way.
Jon
, and weighed a LOT
more, and drew much more power. (300 vacuum tubes, 3000
Germanium diodes, drum memory.) but, one guy could program
it and run it.
The LINC comes in a close second.
Jon
earch labs. The LINCs in this case cost about $50K, and
were built starting in 1961-62. The term "personal
computer" was not coined until a LONG time after.
Jon
lder strap, and there was an old-style handset
with a coil cord connected to it. The bag was something
like 10 by 8 x 4" and appeared to be quite heavy. I am
pretty sure the thing was "personal" to her.
Jon
abandoned IBM 360/30 in a storage/shipper's warehouse and
dragged it to a rented office space that had no elevator. He
carefully dismantled it, dragged the pieces up to at least
the 2nd or 3rd floor, put it back together and got it running!
QUITE a story!
Jon
es about people who bought off-lease or
retired 360's. If I had lived in the Boston area, I would
likely have bought a National Advanced Systems 360 clone.
When NAS closed, there was a broker's warehouse full of
those systems that went for peanuts.
Jon
On 6/1/24 07:20, Liam Proven via cctalk wrote:
On Tue, 28 May 2024 at 19:32, Jon Elson via cctalk
wrote:
There's a story about a guy in Australia that found an
abandoned IBM 360/30 in a storage/shipper's warehouse and
dragged it to a rented office space that had no elevator. He
nd and soldered in the chips by
hand. I wrote a series of diagnostics for them.
Jon
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk wrote:
OK, I have to chime in here. I worked for Artronix about
1972. The LINC computer was developed at MIT for use in
biomedical research labs, and a bunch of people involved
with it later moved
On 6/8/24 11:56, Vincent Slyngstad via cctalk wrote:
On 6/8/2024 7:43 AM, Jon Elson via cctalk wrote:
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk wrote:
OK, I have to chime in here. I worked for Artronix
about 1972. The LINC computer was
On 6/8/24 15:17, jim stephens via cctalk wrote:
On 6/8/24 12:33, Jon Elson via cctalk wrote:
On 6/8/24 11:56, Vincent Slyngstad via cctalk wrote:
On 6/8/2024 7:43 AM, Jon Elson via cctalk wrote:
On 6/7/24 20:42, Vincent Slyngstad via cctalk wrote:
On 6/7/2024 6:19 PM, Jon Elson via cctalk
more recently learned he was subsequently able to
recover the console from the said scrappers and reunite the parts to make
the system whole again. In any event, it was due some parts and much
effort to be made working.
Wow, that's quite a story!
Jon
in this level of low jitter with newer processors,
but we have found quite a few that can do it.
Jon
teledeltos paper, that had a silver top layer
and a carbon layer below that.
A high voltage spark burned away the silver layer and left a
black image.
Jon
On 6/12/24 09:52, Jon Elson via cctalk wrote:
On 6/12/24 03:02, Peter Corlett via cctalk wrote:
Fun factoid: despite modern x86 being clocked ~1000x
faster than ye olde
6502, there's not much in it between them when it comes
to interrupt
response time. If all goes well, x86 takes &qu
the same tape.
It looks like this program came off a VMS system, but I
suspect it will likely compile on an RSX-11 system as that
is what it was derived from.
Let me know if you have issues with it.
Jon
te program can handle that too.
Here is a faster tape copy program that takes advantage of
drives that can stream. This is definitely a VAX/VMS program.
Jon
oking
about a year ahead, and they were looking TWENTY years into
the future!
Jon
On 6/19/24 11:40, Mychaela Falconia via cctalk wrote:
Jon Elson wrote:
WOW, sad news!\u00A0
Yes, very sad news indeed! Lynn's story was my inspiration back in
2013-2014; after coming across her story and reading it breathlessly,
I started my own journey, following in her footsteps.
earth, and
didn't consider the estate planning of the museum to be an
urgent matter. Sadly, he was wrong about that!
Jon
y of the development document from
Honeywell for this system. The rest of my stuff is fairly
pedestrian.
I think I will take you up on this offer when it is ready.
My wife knows nothing of what this stuff is, and my kids
really don't know a whole lot either.
Jon
really was not able to even GIVE them away!
Jon
2519 has
240 FFs.)
You could also probably use a small FPGA to do this as well.
They usually have more FFs per cell than CPLDs.
Jon
k and currently lives in Brandon, Manitoba,
Canada. It has sat covered in plastic in a chemical
warehouse for the past 35 years. Where do people usually
post stuff like this other than here? Thanks!
»
The card cage has a VERY strong DEC look to it - probably
LSI-11.
Jon
unobtainium nowadays!
But, those could easily be made by anybody with a lathe.
Jon
l program talks
directly to the hardware (a Motorola 68040 VME board
connected through a dual-port memory).
So, both of these systems require ANCIENT OS versions.
Jon
t people sucked in,
salivating over the "Deal" they might get, and then keep on
bidding it up! It is all a scam to trap the unsophisticated
enthusiast.
I think Christie's, and other auction houses DO know what
they are doing, and they do it very well.
Jon
On 8/16/24 23:13, Sellam Abraham via cctalk wrote:
On Fri, Aug 16, 2024 at 10:18 AM Jon Elson via cctalk
wrote:
On 8/16/24 11:44, Sellam Abraham via cctalk wrote:
On Thu, Aug 15, 2024 at 4:01 PM Kevin Anderson via cctalk <
cctalk@classiccmp.org> wrote:
I am surprised they ha
the cost of the pizza (beer and pop will be provided).
Please see me at the show for my address.
A general map might be helpful, my wife's GPS was SO LOST
trying to find your place!
Hopefully, I will have my DG Nova/Tandem friend along. He
has GOOD war stories!
Jon
f the special DEC ribbon
cable soldered to each board.
Jon
ies. I have not used this
program in several decades, but I'd be glad to give it to you.
Jon
o reasonable wire-wrapping?
I think back then they used different wire wrap sized
wire on the back planes
Oh, yes, the older DEC backplanes MIGHT have used a
different wire size. But, all I am familiar with seem to
have used #30 AWG wire. But, I have not worked extensively
with PDP-8's, but I'm pretty sure by the 8L they would have
used the #30 wire.
Jon
since I used this I forgot a LOT
about how it works.
Jon
1AL RSIP-33KS 10 0.1 11.7 3.5 R
1AR RSIP-330S 10 0.1 11.7 3.2 R
1B TRANSISTOR D 16 0.3 10.6 3.5 R
1C 16-2N3906 D 16 0.3 9.5 3.5 R
1DA 4N36D 8 0.3 8.4 3.5 R
1DB RC D 16 0.3 8.0 3.5 R
1E 74LS00 D 14
was an Irish navy officer had been killed,
and with his family's permission, papers with disinformation
on the D-day attack were put in his pockets. Tunny
intercepts later showed the Germans were moving positions
based on this disinformation, and it helped the invasion go
better for the allies.
Jon
books you have to guess that. The bombes had
provision for the steckers.
Jon
osed to survive for 2 weeks if
left on continuously. Then, it can be rebuilt for another 2
weeks, and then it is totally worn out.
Jon
rocode and different front panels. There were
lots of owned 360's in the 1980's.
Jon
hardware I
would be interested.
Any interest in Allen-Bradley 7320 CNC control? It has a
big I/O chassis as well. It worked when I last powered it
up, a long time ago.
Jon
le all DIP
switches to make sure it is not just a bad connection.
Jon
eck, and so trying to access a memory or device
location that does not exist/respond is still a machine
check at the very lowest level.
Jon
. Just read the horror stories online.
Jon
home has a venturi system
that requires an air compressor. But, they REALLY pull all
the solder out of the hole, and when the last pin is
cleared, the part just FALLS off the board.
Jon
On 11/12/2018 10:35 AM, Al Kossow via cctalk wrote:
"drrt1...@gmail.com" posted on AFC this morning that Bill died in the Camp fire
in Northern California on Thursday.
Has anyone else heard about this?
WOW! Sad news!
Jon
t one DOES look closer to DEC panels that I remember.
Jon
ey didn't get into any digital graphics
technology until at least the later DEC-10 systems, so mid
1970's.
Jon
On 11/13/2018 10:28 AM, Liam Proven via cctalk wrote:
On Tue, 13 Nov 2018 at 17:12, Jon Elson via cctalk
wrote:
Well, how DID they make panels?
Letraset? :-)
Yes, thanks, that was another brand of this technology!
Jon
On 11/19/2018 03:11 PM, jim stephens via cctalk wrote:
I believe the package internal to mvs / OS has the preface
of IND for the modules. Similar to IFBR14 is part of the
IFB suite of programs.
Shouldn't that be IEFBR14?
Jon
documentation might be hard to come by.
Jon
video
about this system in which I show the hardware and demonstrate some of the
software: https://youtu.be/tMSnnt3iFz0
WOW! Just wow! That is pretty impressive, but for 1987, it
is truly awesome!
Jon
packets or something like that.
You might need to put a firewall between it and other
systems to isolate it from newer ports/traffic that it
doesn't understand. (Just a total guess.)
Jon
a cast-off SGI
IRIS 2020 here that I got running for a while with donor
boards before it died again. I think the old IRIS could at
least get somewhere close to that level of performance.
Probably the IRIS CPU was less powerful, but the graphics
engine was pretty decent.
Jon
of
the tumblers (pins) in the lock.
So, if you know what the length of a tumbler is, you can add
the offset and figure out what depth groove to cut in the key.
Jon
was still flickering. I adjusted the platter a few more
times and then the ready light was solid on, and I was able
to read the files!
If the owner of the system know what i'd done in the middle
of the night, they would have wanted my head!
Jon
.
Rod Smallwood
Sent from Mail for Windows 10
I use minicom on Linux, but don't know if a Windows version
is available. It has allowed me to connect to a bunch of
older devices and send data back and forth.
Jon
On 12/07/2018 11:22 AM, systems_glitch via cctalk wrote:
Indeed, unless you need character pacing.
Actually, with the correct settings of the serial port
(xon/xoff or CTS pin) the serial port driver should do this,
too, so cat would work.
Jon
On 12/07/2018 11:38 AM, Rod G8DGR via cctalk wrote:
Oh good how do you set them to 110 baud?
Oh, WOW! Good catch, it only goes down to 300 baud! major
screwup, ought to be reported to the developers.
Jon
On 12/07/2018 11:46 AM, Jon Elson via cctalk wrote:
On 12/07/2018 11:38 AM, Rod G8DGR via cctalk wrote:
Oh good how do you set them to 110 baud?
Oh, WOW! Good catch, it only goes down to 300 baud!
major screwup, ought to be reported to the developers.
Jon
stty can set the speed to 110
On 12/07/2018 05:48 PM, Jay Jaeger via cctalk wrote:
I have finished the 3rd phase of my IBM 1410 SMS computer
reverse-engineering project.
WOW, absolutely mind-blowing! Thanks for putting in this
huge effort!
Jon
On 12/07/2018 09:01 PM, Pete Turnbull via cctalk wrote:
On 07/12/2018 17:44, Jon Elson via cctalk wrote:
On 12/07/2018 11:22 AM, systems_glitch via cctalk wrote:
Indeed, unless you need character pacing.
Actually, with the correct settings of the serial port
(xon/xoff or CTS pin) the serial
e got great big holes cut in
them?
I didn't see any holes. And, yes, 8" floppies are SUPPOSED
to have a big hole in the center.
Anyway, the labels indicate they have diagnostic programs.
Jon
. I did not
use in in battery-backed mode, but it could do that. You do
have to make sure that any outputs from the memory are
driven to the high-impedance state during power-off to
prevent draining the battery.
Jon
into the CPU, and can't handle a memory
that says "wait".
Jon
original. M8300, M8310, M8320 etc.
Same form factor
Plug compatible – but board contents can differ from original
Well, this could all be done with one FPGA, but if you want
to do each PC board separately, a modest CPLD or small FPGA
would certainly do each board's functionality.
Jon
got hacked? Looks like maybe they took some file
from his system and mailed it out, with a little of their
own text mixed into the Subject: line?
Jon
Jon
.
The "classic" PDP-8 was built with basically the same
circuit technology, but on smaller, unframed glass-epoxy
PCBs with etched and gold-plated card-edge fingers, with
color-coded handles indicating what technology was on it.
So, basic logic was R with red handles, memory boards
(select, read amp, etc.) were G with green handles, etc.
Jon
ing of discrete transistors and diodes
on ceramic substrates, their "SLT" packaging. So, I'm not
too sure about the "later". The original PDP-8 was
introduced in 1965.
Jon
think you can just get
rid of the lines, that will drop dots from the characters,
too. A bad situation.
Jon
ic within the CPU chip
efficiently.
Jon
fullword is equal to FOUR bytes. On a 360/65 and above,
the memory word was 64 bits, or a double-word, so half that
was a fullword. Just makes it more confusing.
Jon
odd parity
was the only option.
Jon
On 01/07/2019 07:51 PM, allison via cctalk wrote:
I still want to make a stretched 8, PDP8 ISA with 16 bits
and faster. No good reason save for it wold be fun.
Umm, I think that is called a Data General Nova!
Jon
in
48 hours.
They usually say "this message was sent from your account"
as proof you've been hacked, but at least for me, the
received-from address is NOT mine. So, I know the thing is
bogus.
This particular scam is quite common right now.
Jon
On 01/08/2019 03:09 PM, allison via cctalk wrote:
I would actually be interested in seeing full messages source,
including headers, for some of the messages. (If anyone is willing
and interested in sharing.)
Sure, I could send you a bunch.
Jon
two weeks, they put out the word that your
site is not going to bear any fruit.
I currently have 9000-some blocked IPs in hosts.deny, I
wonder how much that slows down my store. Ugh, the stuff we
are forced to go through.
Jon
p sometime this year. Possibly it
got into the trash folder. Just wanted to give you a heads
up, in case you had not seen it. If you are too busy, I
understand.
Jon
vy and careful with their computers than
the average user, so I'm not that worried about that.
Jon
y had converged sufficiently
to stop.
These could either stop early, or run on for a long time
trying to reach convergence.
IBM eventually had to offer IEEE floating point format on
later machines.
Jon
blocked addresses.
Well, they are not "permanent". I forget what I have it set
to, but after some time it does expire them from
hosts.deny Likely, I could set that sunset period shorter.
Jon
't have an ultrasonic cleaner.)
Jon
0,000.
Not a hell of a lot of palladium would be in an entire board
full of them.
Jon
a somewhat cryptic bug could go undetected.
If this fault could be caused by memory, then it may be a
pattern-sensitive error, and ls is just the perfect pattern
to trip it up.
Jon
rted doing things, both users got crashes and
garbled data. This was on RSX-11M.
Jon
backwards compatible where possible. So, it MAY be
true that a later MMU will still work in this CPU.
Jon
above that and the
entry point is for the test program.
This would detect a pattern sensitivity in the memory. If
ls, when actually running reads an instruction wrong, it
could then try to read a bad address, and cause the MMU trap.
Jon
ogram, it may not be able to exhaustively test these
adders and comparators.
Jon
atever was used internally in the
particular memory) and also look for degraded caps on the board.
Jon
one by one-shots and RC timing,
a failed cap could silently kill the refresh trigger. An
easy way to check is put something in a few locations and
halt the CPU for some time (seconds to minutes). If the
content is now gone, then the refresh is very likely not
being done.
Jon
/memory/MP00672_MS11L_engDrw.pdf
There is also a technical manual adjacent, with circuit descriptions.
I will scope this up tonight and take a look!
Yup, page 6, a 555 RC refresh timer!
Jon
On 02/06/2019 09:11 PM, Noel Chiappa via cctalk wrote:
> From: Jon Elson
> I'm thinking it is bad memory. ... I think it is just a bad memory chip
Nothing so simple, I'm afraid! The memory actually contains:
PA:171600: 016162 004767 000224 000414 016700 016152 01
tions.
Jon
On 02/11/2019 06:25 PM, Bill Degnan via cctalk wrote:
What is the gold value?
ARRgh! Not more than a few milligrams per the usual DIP
sockets. Likely not worth the trouble of grinding them up to
extract the gold from all that base metal.
Jon
certainly was a WEIRD
problem, and not where I thought it was going to be.
Glad you got it solved!
Jon
hand.
I probably SHOULD have rebuilt the entire harness and
replaced all the Mate-n-Lock connectors on the regulators,
too, but we were always just wanting to get the machine
running again.
Jon
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