> On Oct 19, 2022, at 2:09 PM, Alan Perry via cctalk
> wrote:
>
>
>
>> On Oct 19, 2022, at 08:14, Fritz Mueller via cctalk
>> wrote:
>>
>>
>>> On Oct 19, 2022, at 6:16 AM, Paul Koning via cctalk
>>> wrote:
>>> ...
> On Oct 19, 2022, at 11:14 AM, Fritz Mueller wrote:
>
>
>> On Oct 19, 2022, at 6:16 AM, Paul Koning via cctalk
>> wrote:
>> ...a couple of years ago I wrote an article about the invention of FM radio,
>> in Holland in 1919 (no, not by Armst
> On Oct 18, 2022, at 11:51 PM, Chris Zach via cctalk
> wrote:
>
>> I like how having the old hardware gives physical "witness" and "evidence"
>> that all the old stories are true - people did invent and create these
>> things, they didn't just appear from aliens.
>
> Indeed. I am teaching
> On Oct 18, 2022, at 10:01 AM, Toby Thain via cctalk
> wrote:
>
> On 2022-10-18 2:57 a.m., Holm Tiffe via cctalk wrote:
>> Paul Koning via cctalk wrote:
>>>
>>>
>>>> On Oct 17, 2022, at 2:47 PM, Joshua Rice via cctalk
>>>>
> On Oct 18, 2022, at 2:57 AM, Holm Tiffe via cctalk
> wrote:
>
> Paul Koning via cctalk wrote:
>
>> ...
>>
>> You probably have heard of the CVAX chip, where on the mask in microscopic
>> lettering is the message, in Russian: "CVAX -- when yo
> On Oct 17, 2022, at 2:47 PM, Joshua Rice via cctalk
> wrote:
>
> Hi all,
>
> After some discussion on reddit about russian PDP-11 clones, i made the
> (perhaps erronous) claim that the PDP series in general was cloned by the
> Soviets.
That's definitely accurate. I have seen
Never mind the civil suits, it sounds to me (from the facts you quoted) that
criminal charges might have been warranted.
paul
> On Oct 17, 2022, at 2:38 PM, Sellam Abraham via cctalk
> wrote:
>
> I did. It stretched on for a couple years, as civil suits are wont to do.
> But because
> On Oct 13, 2022, at 11:02 AM, emanuel stiebler wrote:
>
> On 9/28/2022 20:18, Paul Koning via cctalk wrote:
>> FWIW, I just tried building GCC 2.95.2 on my Linux system (Fedora Core 32,
>> GCC 10.3.1. It almost built, ran into an argument mismatch error message in
> On Oct 12, 2022, at 11:32 AM, Ethan Dicks via cctalk
> wrote:
>
>> ...
>
> Yep. I have mine right here. My micrometer is elsewhere, but looks
> like it's made from 1/8" steel flat stock (with anti-corrosion
> plating), and has 3 bends (apex and two ends), a clip-nut for the
> machine
> On Oct 7, 2022, at 7:14 PM, ben via cctalk wrote:
>
> On 2022-10-07 1:09 p.m., paul.kimpel--- via cctalk wrote:
>> We'd all like to see the ALGO compiler, but be forewarned -- it's something
>> like 14 passes on paper tape, with intermediate results punched on paper
>> tape. I understand
> On Oct 7, 2022, at 6:22 PM, Fred Cisin wrote:
> ...
> On Fri, 7 Oct 2022, Paul Koning via cctalk wrote:
>> Didn't know that one. I do know:
>>
>> He died at the console
>> of hunger and thirst
>> next day he was buried
>> face down, nine edge f
> On Oct 7, 2022, at 2:47 PM, Fred Cisin via cctalk
> wrote:
>
>> > I was curious if anyone recognizes this punched card reader. Marked:
>> > AMP Incorporated - SYSCOM Division.
>
> On Fri, 7 Oct 2022, Dennis Boone via cctalk wrote:
>> Can't help with the identity, but I'm loving the 9 edge
> On Oct 7, 2022, at 1:50 PM, Dennis Boone via cctalk
> wrote:
>
>> I was curious if anyone recognizes this punched card reader. Marked:
>> AMP Incorporated - SYSCOM Division.
>
> Can't help with the identity, but I'm loving the 9 edge hanging out the
> front in contravention of the
> On Oct 6, 2022, at 12:51 AM, Rodney Brown via cctalk
> wrote:
>
> According to gcc-9.1.0/NEWS Intel i860 was an architecture declared obsolete
> in GCC 4.0 (and previously in GCC 3.1).
GCC does this in two steps. One is that it's marked as obsolete but can still
be built, you just get
> On Sep 30, 2022, at 11:19 PM, Tom Hunter wrote:
>
> https://www.stirlingcryogenics.eu/
>
> These machines are still made and indeed are very cool. ;-)
So to speak!
I didn't see their liquid helium machine. I remember one installed at the TU
Eindhoven physics department; it
> On Sep 30, 2022, at 1:12 PM, Peter Corlett via cctalk
> wrote:
>
>> ...
>
> Note that there are (at least) _two_ Philips museums: the "Stichting tot
> Behoud van Historische Philips Producten" (Foundation for the Preservation
> of Historic Philips Products) and the Philips Museum. Their
> On Sep 27, 2022, at 7:43 PM, Paul Koning via cctalk
> wrote:
>
>
>
>> On Sep 27, 2022, at 5:28 PM, Stefan Skoglund via cctalk
>> wrote:
>>
>> fre 2022-09-23 klockan 10:30 -0400 skrev emanuel stiebler via cctalk:
>>> Hi all,
> On Sep 27, 2022, at 5:28 PM, Stefan Skoglund via cctalk
> wrote:
>
> fre 2022-09-23 klockan 10:30 -0400 skrev emanuel stiebler via cctalk:
>> Hi all,
>> anybody has some GCC or any other tool chain for the above?
>> Or some pointers, which was the last version of the GCC tool chain
>>
> On Sep 23, 2022, at 11:50 PM, Ali via cctalk wrote:
>
> I always thought the i960 was an upgrade to the i860 (sort of like i386 to
> i486 upgrade). However, based on the info on wiki it seems as if the i960
> actually came first and although a RISC chip it was in no way in the same
>
> On Sep 23, 2022, at 10:57 PM, Adrian Stoness via cctalk
> wrote:
>
> Wow someone mentioning à phillips p series
"Philips" (one l).
Their numbering is weird. My first assembly language programming was on a
PR8000, an extremely obscure 24 bit minicomputer. It doesn't seem to have any
> On Sep 23, 2022, at 5:49 PM, Chuck Guzis via cctalk
> wrote:
>
> On 9/23/22 13:47, Fred Cisin via cctalk wrote:
>
>> It was useful as a simple test of whether an applicant had any
>> bit-twiddling experience. But, I couldn't think of practical application.
>>
>
> The 6600 implemented
> On Sep 23, 2022, at 4:47 PM, Fred Cisin via cctalk
> wrote:
>
> On Fri, 23 Sep 2022, Randy Dawson via cctalk wrote:
>> On the top secret number cruching
>> The Cray had an instruction called 'population count'
>> asked for by the NSA.
>> The number of bits on in a word, not sure what
> On Sep 23, 2022, at 2:25 PM, Chuck Guzis via cctalk
> wrote:
>
> On 9/23/22 10:52, ben via cctalk wrote:
>
>> Just how do the supercomputer do i/o for all that floating numbers.
>> Weather maps I can see for output, but what about all that Top Secret
>> number crunching.
>
> Well,
> On Sep 23, 2022, at 2:14 PM, Randy Dawson via cctalk
> wrote:
>
> On the top secret number cruching
>
> The Cray had an instruction called 'population count'
>
> asked for by the NSA.
>
> The number of bits on in a word, not sure what this was used for.
Cray did? I didn't know
> On Sep 23, 2022, at 1:52 PM, ben via cctalk wrote:
>
> Just how do the supercomputer do i/o for all that floating numbers.
> Weather maps I can see for output, but what about all that Top Secret
> number crunching.
> Ben.
I'm not sure I understand the question. Floating point numbers are
> On Sep 23, 2022, at 1:38 PM, Christian Kennedy via cctalk
> wrote:
>
>
> On 23/09/22 10:22, Paul Koning via cctalk wrote:
>>
>> I view the deadstart panel as a type of boot ROM, different from other boot
>> ROMs only in that it's easy to chang
On Sep 23, 2022, at 1:35 PM, Chuck Guzis wrote:
>
> On 9/23/22 09:53, Paul Koning wrote:
>
>> Those are good examples, but is it "many" or just those two and maybe one or
>> two more? For example, Burroughs and IBM mainframes were both very much
>> "lights and switches" control panel type
> On Sep 23, 2022, at 1:09 PM, Joshua Rice via cctalk
> wrote:
>
> ...
> The Cray was often coupled witha DG nova for bootstrapping, which very much
> did have a front panel on it. Indeed, many models of PDP-10 were bootstrapped
> by PDP-11’s with front panels, even if the PDP-10 lacked
> On Sep 23, 2022, at 12:45 PM, Chuck Guzis via cctalk
> wrote:
>
> On 9/22/22 22:56, ben via cctalk wrote:
>
>> Blinking lights tended to be for computers of the future.
>> World maps with lights where nuclear missiles could strike
>> seem to be movie props only.
> I thought it curious
> On Sep 22, 2022, at 10:44 PM, Tom Hunter via cctalk
> wrote:
>
> I cannot understand the mindset of people who buy up components desperately
> sought by others who want to restore machines just to nail them to their
> man cave or living room wall.
> These same types of people vacuum up
> On Aug 22, 2022, at 11:17 AM, Warner Losh wrote:
>
>
>
> On Mon, Aug 22, 2022 at 7:13 AM Paul Koning via cctalk
> wrote:
>
>
> > On Aug 21, 2022, at 8:35 PM, W2HX via cctalk wrote:
> >
> > I always thought it was interesting how 5 1/4 is 3
> On Aug 21, 2022, at 8:35 PM, W2HX via cctalk wrote:
>
> I always thought it was interesting how 5 1/4 is 3U (rack units). I thought
> there might have been some relationship to that. But could have been just
> coincidence.
For floppies, likely yes. That fact did get used later on, in
> On Aug 14, 2022, at 4:22 AM, Matt Burke via cctalk
> wrote:
>
> On 12/08/2022 18:35, Paul Koning via cctalk wrote:
>> Can a Linux loadable module, without help from the core kernel code,
>> define a new socket address family, and tie into the socket API
> On Aug 12, 2022, at 1:08 PM, Dave Mitton via cctalk
> wrote:
>
> Okay,
>
> The issue I don’t understand, I guess a matter of not understanding Linux
> internals, is why does “the kernel” require explicit DECnet support?
>
> I built DECnet-DOS without any cooperation from
> On Aug 9, 2022, at 9:14 AM, Ryan de Laplante via cctalk
> wrote:
>
> I know this is not exactly what you are talking about, but attached is a
> picture of an RK05 with a storage unit for holding platters just above. I’m
> still hoping one will show up on eBay someday.
I remember those
> On Aug 2, 2022, at 2:38 PM, Grant Taylor via cctalk
> wrote:
>
> On 8/2/22 11:52 AM, Robert Armstrong via cctalk wrote:
>> Umm... The problem is that there are a lot more DECnet systems than just
>> VMS.
>
> Please elaborate.
>
> I naively assumed that anything that was running DECnet
> On Aug 1, 2022, at 11:38 AM, Peter Coghlan via cctalk
> wrote:
>
>>
>> For an extra $1 now you can get integrated WiFi (and Bluetooth but
>> there isn't any BT software support yet) in the form of the $5 Pi
>> Pico W, so that's one route to talking to an IP network for IoT or
>>
> On Jul 31, 2022, at 7:25 PM, Gavin Scott via cctalk
> wrote:
>
> On Sun, Jul 31, 2022 at 2:29 PM Paul Koning via cctalk
> wrote:
>> Yet another one is Raspberry Pico,
>>
>> Neither of these come standard with Ethernet, though I've seen option cards.
> On Jul 31, 2022, at 3:45 PM, Warner Losh wrote:
>
>
>
> On Sun, Jul 31, 2022, 1:29 PM Paul Koning via cctalk
> wrote:
> Either way, a complete system might cost 10-20 dollars. Check our "Arduino
> Nano" or "Adafruit Trinket". I used
> On Jul 31, 2022, at 2:33 PM, Grant Taylor via cctalk
> wrote:
>
> ...
> Now I wonder what I'm conflating. I was thinking of something else that's
> /not/ running Linux but frequently used for tings. AT Tiny?
AT Tiny is a microcontroller.
You may be thinking of Arduino, which is
> On Jul 31, 2022, at 2:01 PM, Grant Taylor via cctalk
> wrote:
>
> On 7/31/22 11:38 AM, Paul Koning via cctalk wrote:
>> One easy way would be to plug in a USB to RS232 adapter into any old Linux
>> device, like a Pi. Another is to use an RS232 converter card fo
> On Jul 31, 2022, at 1:50 AM, Ali via cctalk wrote:
>
>> I feel like a Raspberry Pi or similar would fit the bill for this
>> nicely.
>>
>
> Yes, but it wouldn't be ready to go ;). I would need to find a raspberry pi
> with a built in serial port and a flavor Linux already loaded on it
> On Jul 24, 2022, at 2:13 PM, Charles Dickman via cctalk
> wrote:
>
> My attempt at the colors from several years ago.
>
> http://www.chdickman.com/pdp8/DECcolors/
>
> CHM = Color Harmony Manual
It would be interesting to make them to Pantone colors, because RGB can't
reproduce every
> On Jul 12, 2022, at 3:48 PM, Chris Zach via cctalk
> wrote:
>
>> Recently eBay seller smhelectronics261 posted a very interesting prototype
>> board: https://www.ebay.com/itm/295087630609
>> The description is "Dec Digital PRO 350/380 Professional Microvax II Proto
>> 54-16707
> On Jul 10, 2022, at 5:06 PM, Chuck Guzis via cctalk
> wrote:
>
> On 7/10/22 13:41, Paul Koning via cctalk wrote:
>>
>>
>>> On Jul 10, 2022, at 4:10 AM, Christian Corti via cctalk
>>> wrote:
>>>
>>> On Sat, 2 Jul 2022, Grant
Looks good!
And many thanks to Jay West and to the CCCG.
paul
> On Jul 11, 2022, at 1:38 AM, Dennis Boone via cctalk
> wrote:
>
> Friends,
>
> The process of migrating the cctalk and cctech mailing lists to a new
> host in Chicago is underway. This evening, I've moved the list mail
> On Jul 10, 2022, at 4:10 AM, Christian Corti via cctalk
> wrote:
>
> On Sat, 2 Jul 2022, Grant Taylor wrote:
>> I don't know that I've ever heard / seen the name "Rank" prefixing "Xerox"
>> before.
>
> Actually I knew them only as Rank Xerox many years ago, when they were
> commonly
t;
> >
> >
> > On Tue, Jun 28, 2022 at 3:03 PM Paul Koning via cctalk
> > mailto:cctalk@classiccmp.org>> wrote:
> > I'm looking for cross tools for PDP11. I know of macro11, and have been
> > feeding Olaf assorted fixes.
> >
> > I
> On Jun 28, 2022, at 5:25 PM, Warner Losh wrote:
>
>
>
> On Tue, Jun 28, 2022 at 3:03 PM Paul Koning via cctalk
> wrote:
> I'm looking for cross tools for PDP11. I know of macro11, and have been
> feeding Olaf assorted fixes.
>
> I built my own LIBR (i
I'm looking for cross tools for PDP11. I know of macro11, and have been
feeding Olaf assorted fixes.
I built my own LIBR (in Python, that was easy enough).
So now I'm looking for LINK and TKB. I found this:
https://github.com/nzeemin/pclink11 but it says no overlay support and may
never
Announcing the Open SIMH project
SIMH is a framework and family of computer simulators, initiated by Bob Supnik
and continued with contributions (large and small) from many others, with the
primary goal of enabling the preservation of knowledge contained in, and
providing the ability to
> On Jun 3, 2022, at 8:55 AM, Bill Gunshannon via cctalk
> wrote:
>
> On 6/3/22 08:46, Antonio Carlini via cctalk wrote:
>> On 03/06/2022 03:09, Rick Murphy via cctalk wrote:
>>> On 6/1/2022 12:49 AM, Glen Slick via cctalk wrote:
No one ever called it a "Digital Ethernet Personal
> On Jun 3, 2022, at 8:46 AM, Antonio Carlini via cctalk
> wrote:
>
> ...
> It's predecessor, the DEQNA, was "Digital ETHERNET Q-Bus Network Adapter",
> according to its user guide, or "broken", according to most people :-)
Yup. It went through 12 revisions, but even that last "rev L"
> On Jun 3, 2022, at 12:47 AM, Glen Slick via cctalk
> wrote:
>
> On Thu, Jun 2, 2022, 9:36 PM Warner Losh via cctalk
> wrote:
>
>> Speaking of DEPCA, does anybody (a) know what kind of mouse connects (the
>> docs just say DIGITAL MOUSE) and (b) know where to get one?
>>
>> Warner
>>
>
> On Jun 2, 2022, at 12:11 AM, Bill Degnan via cctalk
> wrote:
>
> ...
> When I added more RAM to the system to bring up to 512K and installed
> the DEPCA controller I was able to get the system to boot up and run
> the connection scripts that search for a DEC network and associated
>
> On Jun 1, 2022, at 5:53 AM, Warner Losh via cctech
> wrote:
>
> ...
> I believe the DEPCA was based on the venerable
> SONIC chipset, but it may have been the LANCE. It wasn't NE-2000 compatible
> (that came later) :).
LANCE seems plausible, or perhaps one of the later chips designed by
> On May 17, 2022, at 1:27 PM, Lee Gleason via cctalk
> wrote:
>
> I have a tape from the late 70s that contains DX/IAS, a package from DEC
> that allowed terminal emulation and file transfer to/from WPS on DECmates to
> IAS systems. Not too many IAS systems out there these days, but
> On May 16, 2022, at 4:59 PM, Rob Jarratt via cctalk
> wrote:
>
>> I have several 7474s, including one marked DEC 7474. Sadly, I fear that
>> shipping from the US is likely to be prohibitive.
>
> I have ordered some 7474s. However I am getting a bit lost in the discussion
> now. From a
> On May 15, 2022, at 2:51 PM, Chris Quayle via cctech
> wrote:
>
> ...
> Original 74 series TTL can still be found, Ebay often, new old stock
> and other surplus vendors.
>
> Would need to take care replacing with later ttl series, as the gate
> delay, switching times and fanout probably
> On May 14, 2022, at 1:41 PM, John Robertson via cctalk
> wrote:
>
> On 2022/05/14 10:11 a.m., Rob Jarratt via cctalk wrote:
>> Hello,
>>
>> I have found a bad DEC 7474 chip on my M7133 board. Clearly it is a
>> 7474 D flip flop. The problem is I don't know which modern series
>> would be
> On May 13, 2022, at 3:36 AM, Christian Corti via cctalk
> wrote:
>
> On Thu, 12 May 2022, Peter Coghlan wrote:
> ...
>> A variac does not provide isolation. If it is not wired correctly, it is
>
> Good "variacs" provide galvanic isolation from the mains, i.e. they are not
>
> On May 12, 2022, at 1:03 PM, dwight via cctalk wrote:
>
> Hi All
> There was a Nicolet computer purchased recently on ebay:
> https://www.ebay.com/bfl/viewbids/363826255294?item=363826255294=nc&_trksid=p2047675.l2565
> Looking at the buyers history, it looks like it was purchased by a
> On May 12, 2022, at 11:37 AM, Peter Coghlan via cctalk
> wrote:
>
> Toby Thain via cctalk wrote:
>> On 2022-05-11 7:02 p.m., Peter Coghlan via cctalk wrote:
>>> Given the normal usage that has evolved for the terms DC and AC rather than
>>> their dictionary definitions, I would suggest
> On May 11, 2022, at 9:00 PM, Maciej W. Rozycki via cctalk
> wrote:
>
> ...
> I guess especially for standard capacitors factories ordered whatever was
> readily available whereas with the high-ripple low-impedance/ESR parts the
> choice was much more limited.
I wonder if nowadays a good
> On May 8, 2022, at 7:04 PM, Maciej W. Rozycki via cctalk
> wrote:
>
> On Sun, 8 May 2022, Tony Duell wrote:
>
>>> In the H7821 it's -9Vdc return pairing with -9Vdc supplied on the yellow
>>> wire (an isolated circuit). Pin numbers 14 & 13. Try measuring voltage
>>> across the suspicious
> On May 5, 2022, at 4:53 PM, Toby Thain via cctalk
> wrote:
>
> On 2022-05-05 1:43 p.m., John Robertson via cctalk wrote:
>> On 2022/05/05 10:26 a.m., Toby Thain via cctalk wrote:
>>> On 2022-05-05 1:03 p.m., John Herron via cctalk wrote:
Someone at work pointed this out and I've never
> On Apr 30, 2022, at 6:35 PM, Will Cooke via cctalk
> wrote:
>
>
>
>> On 04/30/2022 2:09 PM amp1...@gmail.com wrote:
>>
>>
>> Hi Will,
>>
>> Is the punch you received capable of punching 8-level tape? While the PDF on
>> Surplus Sales of Nebraska's site says the unit can punch 5- to
> On Apr 28, 2022, at 11:05 PM, s shumaker via cctalk
> wrote:
>
> duh... Didn't look there. was googling all over w/o success. It didn't
> show the bitsavers link. Thanks!
Rumor has it that Google has a bias against http (not https) sites, even though
for applications like this http
> On Apr 26, 2022, at 1:25 PM, Shoppa, Tim via cctalk
> wrote:
>
> Paul writes:
>> As for the slashed letter O, that's strange. Certainly it is not CDC
>> practice; the only place I ever ran into this is with IBM, I always
>> considered it an example of IBM doing
>> things the weird way.
> On Apr 27, 2022, at 4:38 PM, Chuck Guzis via cctech
> wrote:
>
> On 4/27/22 10:51, Craig Ruff via cctech wrote:
>> Having gone through many mathematics courses it was common to also place a
>> slash on the letter Z to distinguish it from the numeral 2. Also for persons
>> from Europe
> On Apr 27, 2022, at 1:22 AM, Chuck Guzis via cctalk
> wrote:
>
> On 4/26/22 20:10, ben via cctalk wrote:
>> On 2022-04-26 8:48 p.m., Chuck Guzis via cctalk wrote:
>>
>>> CDC actually adopted OCR-A as their official internal font. My office
>>> typewriter (Olivetti) had such a font. I
> On Apr 26, 2022, at 7:55 PM, Jules Richardson
> wrote:
>
> Hi Paul,
>
> Thanks for that! I'd mentioned this over on Facebook, where I'd also been
> able to post a photo of the transcript, and someone there pointed out that
> the BASIC listing uses single quotes around strings (what I'd
Bummer, no attachments...
paul
> On Apr 26, 2022, at 5:14 PM, Paul Koning via cctalk
> wrote:
>
>
>
>> On Apr 26, 2022, at 4:41 PM, ben via cctalk wrote:
>>
>> ...
>> PS: Did any common I/O devices have the ALGOL symbols Less tha
> On Apr 26, 2022, at 4:41 PM, ben via cctalk wrote:
>
> ...
> PS: Did any common I/O devices have the ALGOL symbols Less than or Equals,
> Greater than or equals , not , arrows and other misc symbols?
Yes, the Flexowriters at TU Eindhoven used to punch ALGOL programs for the
Electrologica
Apparently so. The word from a CDC experts list is that the "run complete"
message is not from BASIC itself (which is indeed a CDC product) but rather
from the time sharing executive, called TELEX in KRONOS and early NOS, and IAF
in later versions of NOS.
As for the slashed letter O, that's
> On Apr 21, 2022, at 2:47 PM, Dave Mitton via cctech
> wrote:
>
> Date: Wed, 20 Apr 2022 14:03:48 -0400
> From: Paul Koning
> To: Chris Zach , "cctalk@classiccmp.org"
>
> Subject: Re: interesting DEC Pro stuff on eBay
> ….
>
> ➢ That said, you'd think that DMA would make a 1:1
> On Apr 20, 2022, at 1:37 PM, Chris Zach via cctalk
> wrote:
>
>> Maybe a different guy, since Pro development was in the late 1970s to early
>> 1980s.
>> paul
>
> Probably. Still would be interesting to see what the board actually is/does,
> I wondered why they never did DMA
> On Apr 19, 2022, at 3:38 PM, John Foust via cctalk
> wrote:
>
> At 01:40 PM 4/19/2022, Bjoren Davis via cctalk wrote:
>> Looking at the photo I see the name "Dave Iacobone". I wonder if he is
>> still around and remembers that board.
>
>
> On Apr 18, 2022, at 6:44 PM, Mike Katz via cctalk
> wrote:
>
> Which is more generic.
>
> ESDI, SMD or SCSI.
>
> In my opinion, SCSI is as close are you are going to get to a universal
> interface.
>
> As for reading raw data from a drive. The newer the drive, the higher the
> bit
> On Apr 17, 2022, at 1:28 PM, shad via cctalk
> wrote:
>
> hello,
> there's much discussion about the right method to transfer data in and out.
> Of course there are several methods, the right one must be carefully chosen
> after some review of all the disk interfaces that must be
> On Apr 15, 2022, at 6:49 PM, Peter Coghlan via cctalk
> wrote:
>
> We occasionally hear of aged computers being employed in the nuclear
> power industry, certain military applications or long lifed medical
> equipment for example. I imagine that these machines can have a
> significant
> On Apr 15, 2022, at 6:54 PM, Fred Cisin via cctalk
> wrote:
>
> On Thu, 14 Apr 2022, Tom Gardner via cctalk wrote:
>> This was the approach IBM used in it's first RAMAC RAID where I think they
>> had to buffer a whole cylinder but that was many generations ago
>
> (my copy of the specs
What, on this list? I haven't seen any of that.
I get a large amount of dishonest mail; much of it is caught by my "send this
immediately to trash without reading it" filter rules. Like you, I have no
idea what's attached, simply because I have no interest in investigating the
machinations
> On Apr 13, 2022, at 9:45 PM, Fred Cisin via cctech
> wrote:
>
> On Wed, 13 Apr 2022, Paul Koning wrote:
>> Indeed. Though even that is hard for the more exotic formats, if original
>> controllers are unavailable. How would you read, for example, an IBM 1620
>> or CDC 6600 disk pack,
> On Apr 13, 2022, at 8:12 PM, Fred Cisin via cctech
> wrote:
>
> ...
> My mindset is/was still stuck in the disk format conversion realm, of trying
> to get information (hopefully information in the form of files, not just data
> as track images) from alien media.
> And, more often than
> On Apr 13, 2022, at 5:27 PM, Fred Cisin via cctech
> wrote:
>
> On Wed, 13 Apr 2022, shad via cctech wrote:
>> The main board should include a large enough array of bidirectional
>> transceivers, possibly with variable voltage, to support as much interfaces
>> as possible, namely at
> On Apr 13, 2022, at 1:35 AM, shad via cctalk
> wrote:
>
> Hello,
> I'm a decent collector of big iron, aka mini computers, mainly DEC and DG.
> I'm often facing common problems with storage devices, magnetic discs and
> tapes are a little prone to give headaches after years, and
> On Apr 12, 2022, at 3:45 PM, John-Paul Stewart via cctalk
> wrote:
>
>
> On 2022-04-12 09:49, Paul Koning via cctalk wrote:
>>
>> Does anyone still remember the other 100 Mb Ethernet-like proposal, I
>> think from HP, which added various types of comp
> On Apr 12, 2022, at 3:11 PM, Grant Taylor via cctalk
> wrote:
>
> On 4/12/22 11:41 AM, Paul Koning via cctalk wrote:
>> ...
>> Spanning tree is indeed another algorithm / protocol, but it's a control
>> plane algorithm with relatively easy time constraints, s
> On Apr 12, 2022, at 2:51 PM, Grant Taylor via cctalk
> wrote:
>
> On 4/12/22 11:44 AM, Paul Koning wrote:
>> In my experience, "hub" is a vague marketing term. ...
>> Non-learning layer 2 packet switching devices to me are hypothetical beast,
>> I never met one and I'm glad I didn't.
>
>
meant networking within the company.
> Different times.
>
> Sent from my iPhone
>
>> On Apr 12, 2022, at 10:49, Paul Koning via cctalk
>> wrote:
>>
>>
>>
>>> On Apr 12, 2022, at 1:20 PM, Grant Taylor via cctalk
>>> wrote:
>&
> On Apr 12, 2022, at 1:20 PM, Grant Taylor via cctalk
> wrote:
>
> On 4/12/22 10:11 AM, Wayne S wrote:
>> Wiki says ethernet became commercially available in 1980 and invented in
>> 1973. So if enet was 1980 what were routers routing 10 years earlier in 1970?
>
> I feel like IMPs were
> On Apr 12, 2022, at 1:44 PM, Todd Goodman via cctalk
> wrote:
>
> On 4/12/2022 1:28 PM, Grant Taylor via cctalk wrote:
>> On 4/12/22 7:56 AM, Todd Goodman via cctalk wrote:
>>> The big difference in my mind between bridge and switch is:
>>>
>>> * Switches learn what port given MACs are
> On Apr 12, 2022, at 1:25 PM, Grant Taylor via cctalk
> wrote:
>
> On 4/12/22 8:50 AM, Paul Koning via cctalk wrote:
>> A device that doesn't do address learning and floods unicast frames is not a
>> bridge but rather a non-standard piece hardware.
>
>
> On Apr 12, 2022, at 12:45 PM, Grant Taylor via cctalk
> wrote:
>
> On 4/12/22 7:49 AM, Paul Koning via cctalk wrote:
>> ...
>> The concept of a repeater goes back to day 1 of Ethernet; you'll find them
>> in the D/I/X Ethernet spec. And they were part of t
> On Apr 12, 2022, at 11:40 AM, Todd Goodman wrote:
>
>
> On 4/12/2022 10:50 AM, Paul Koning wrote:
>>
>>> ...
>>
>> Learning has always been part of what bridges do. It's a core part of the
>> DEC bridge spec, and a core part of the DECbridge-100 functionality. It is
>> the reason why
> On Apr 12, 2022, at 10:44 AM, Todd Goodman wrote:
>
>
> On 4/12/2022 10:12 AM, Paul Koning wrote:
>>
>>> On Apr 12, 2022, at 9:56 AM, Todd Goodman via cctalk
>>> wrote:
>>> ...
>>> The big difference in my mind between bridge and switch is:
>>>
>>> * Switches learn what port given MACs
> On Apr 12, 2022, at 12:52 AM, Grant Taylor
> wrote:
>
> ...
> I vaguely remember that there were three main forms of switching: store and
> forward, cut-through, and a hybrid of the two. My understanding is that S
> had the ability to sanity check (checksum?) frames and only re-send
> On Apr 12, 2022, at 9:56 AM, Todd Goodman via cctalk
> wrote:
> ...
> The big difference in my mind between bridge and switch is:
>
> * Switches learn what port given MACs are on and only sends unicast
> traffic destined for that MAC address on that port and not all
> * Bridges send
> Begin forwarded message:
>
> From: Grant Taylor via cctalk
> Subject: Re: Retro networking / WAN communities
> Date: April 12, 2022 at 2:08:22 AM EDT
> To: Wayne S , "General Discussion: On-Topic and
> Off-Topic Posts"
> Reply-To: Grant Taylor , "General
> Discussion: On-Topic and
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