Al mentioned the 940 so I thought I would fill in the details:
Lichtenberger and Pirtle extended the hardware to include a page map: 14
bits of VA was divided into 3 bits of page # and 11 bits of offset. The 8
pages were held in 2 x 24 bit words divided into a 8 x 6 bit page numbers.
The high ord
I thought we were talking Mini Computers. The Ferranti/Manchester Atlas had
virtual memory of a sort which provided protection, and indeed IBM bought
the Virtual Memory patents from Manchester University. I gather the PDP/11
received Memory Mapping boards early in its life, didn't these offer some
But an original PDP/11 is almost as massive..
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Curious
> Marc
> Sent: 05 May 2016 06:11
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: AW: When did Memory- and IO Protection E
2016-05-03 17:52 GMT+02:00 Erik Baigar :
>
> Dear Experts,
>
> during discussing the Rolms I came accross the following question:
> What was the first (Minicomputer) architecture which offered
> memory- and IO protection? I'd define the minimum requirements as:
>
> - Existence of a superuser mod
On Wed, 4 May 2016, Gottfried Specht wrote:
I'm not sure whether it qualifies for your full list, but the HP2100A (that came out in
1971) had a "Memory Protect" hardware that
Hi Gottfried,
thanks for the excellent answer - yes I think this is exactly what
matches my specification! Thanks.
On Thu, 5 May 2016, Dave Wade wrote:
I thought we were talking Mini Computers. The Ferranti/Manchester Atlas had
virtual memory of a sort which provided protection, and indeed IBM bought
the Virtual Memory patents from Manchester University. I gather the PDP/11
received Memory Mapping boards e
Google JETDS.
It will tell all.
Thanks - that is the perfect link. There is some information on the
AN/AYK-14, an airborne computer, on the web...
On May 3, 2016 4:35 PM, "Erik Baigar" wrote:
IIRC we sold a bunch of 1666Bs to the US Navy in YUK/something
nomenclature).
1666s are kn
On Tue, 3 May 2016, Noel Chiappa wrote:
A set of standards for allowed levels of emissions (in particular,
electro-magnetic radiation) from communication/computing gear, intended to
prevent listening to the activity of that gear:
https://en.wikipedia.org/wiki/Tempest_(codename)
Thanks, ver
At 11:24 PM 5/4/2016, Andy Holt wrote:
>Could someone with access to the OED please check up the first use of the term
>"minicomputer"
I am not the OED, but when I first saw the TX-0 and the PDP-1 at MIT in late
1964 or early 1965 I believe that I heard the term minicomputer applied to
them. C
On Wed, May 4, 2016 at 3:20 AM, Tor Arntsen wrote:
>
> Ah, positive news. In the meantime I've been half-busy creating a
> local (private, for now) re-construction of NDwiki, from archive.org.
I was thinking about doing the same, but so far I haven't.
> BTW in case you don't
> have a public serv
On Thu, May 5, 2016 at 7:08 AM, tony duell wrote:
>
>> Has anyone ever worked up a PC parallel port to Facit 4070 paper tape
>> punch interface?
>
> Are you talking about a modern USB-parallel cable type interface or the
> original PC parallel interface where you could individually control all
> t
On Wed, 4 May 2016, Mark Kahrs wrote:
Al mentioned the 940 so I thought I would fill in the details:
Lichtenberger and Pirtle extended the hardware to include a page map: 14
bits of VA was divided into 3 bits of page # and 11 bits of offset. The 8
pages were held in 2 x 24 bit words divided i
> From: Erik Baigar
> very interesting reading
If you want to see a great example of why it was important, check out the
so-called 'Berlin Tunnel':
https://en.wikipedia.org/wiki/Operation_Gold
http://www.fas.org/irp/cia/product/tunnel-200702.pdf
Some of the traffic that was intercep
> On May 5, 2016, at 4:53 AM, Erik Baigar wrote:
>
>
>
> On Tue, 3 May 2016, Noel Chiappa wrote:
>
>> A set of standards for allowed levels of emissions (in particular,
>> electro-magnetic radiation) from communication/computing gear, intended to
>> prevent listening to the activity of that g
On Thu, May 05, 2016 at 09:17:53AM -0400, Noel Chiappa wrote:
> > From: Erik Baigar
>
> > very interesting reading
>
> If you want to see a great example of why it was important, check out the
> so-called 'Berlin Tunnel':
I remember working in a TEMPEST room up here in Ottawa (CDC Canada
The actual Tempest specs used to be classified.
On Thu, May 5, 2016 at 8:17 AM, Noel Chiappa
wrote:
> > From: Erik Baigar
>
> > very interesting reading
>
> If you want to see a great example of why it was important, check out the
> so-called 'Berlin Tunnel':
>
> https://en.wikipedia.o
On Thu, 5 May 2016, Noel Chiappa wrote:
If you want to see a great example of why it was important, check out the
so-called 'Berlin Tunnel':
https://en.wikipedia.org/wiki/Operation_Gold
http://www.fas.org/irp/cia/product/tunnel-200702.pdf
Many thanks - that is indeed an outstanding proje
On Thu, 5 May 2016, Paul Anderson wrote:
The actual Tempest specs used to be classified.
Very understandable and a good idea!
On Thu, 5 May 2016, Paul Koning wrote:
[snip]
displays, i.e., ones with analog video) that drastically reduces the
emissions from the video signal. It was created by Markus Kuhn and Ross
Anderson at U. Cambridge.
https://www.cl.cam.ac.uk/~mgk25/emsec/softtempest-faq.html
Quite interestin
On 2016-May-05, at 6:17 AM, Noel Chiappa wrote:
>> From: Erik Baigar
>
>> very interesting reading
>
> If you want to see a great example of why it was important, check out the
> so-called 'Berlin Tunnel':
>
> https://en.wikipedia.org/wiki/Operation_Gold
> http://www.fas.org/irp/cia/product/tu
Here is a good look at the project from a few different perspectives. It is
a somewhat popular story within the various intelligence communities that
can probably still cause arguments. They gathered so many tapes it took
tears to through them, and a lot of people believe the Russians knew about
it
On 05/05/2016 12:29 AM, Chuck Guzis wrote:
On the other hand, the PB250 was contained in a single 5' rack (table
model), ran off of a single 15A 120V circuit and weighed a bit over 100
lbs. I'd call it a minicomputer if it weren't for the fact that it was
brought out around 1961. 22 bit words.
On 05/05/2016 10:06 AM, Jon Elson wrote:
> And another, the LINC, discrete transistor machine, 2K 12-bit words
> and a software driven screen, so it was actually interactive. Storage
> was LINCtapes, the predecessor to DECtapes. Fit in a single 5' relay
> rack, with a console on a desk.
...and,
On 05/04/2016 11:34 PM, William Donzelli wrote:
> Wasn't minicomputer really a marketing term, anyway? Suits and all?
Well, it was the sixties, after all. We all forget "midicomputer". :)
One thing that some may not know about the 1700 is that it had a
*per-word* protection bit as well as I/O p
> On May 5, 2016, at 1:34 PM, Chuck Guzis wrote:
>
> On 05/04/2016 11:34 PM, William Donzelli wrote:
>
>> Wasn't minicomputer really a marketing term, anyway? Suits and all?
>
> Well, it was the sixties, after all. We all forget "midicomputer". :)
>
> One thing that some may not know about t
Thanks, Erik.
How do I remember this ca. 40 years later?
Well, while servicing these systems they would frequently stop with a "Memory
Protect Error" (various Operating Systems).
Guess what the intuitive action was: Replace the "Memory Protect Board" - which
n e v e r fixed the problem.
So
Wasn't minicomputer really a marketing term, anyway? Suits and all?
On Thu, 5 May 2016, Chuck Guzis wrote:
Well, it was the sixties, after all. We all forget "midicomputer". :)
We try to.
My sexist memories of miniskirts are what lets me tolerate the marketing
silliness behind the name "m
On 2016-05-05 2:55 PM, Gottfried Specht wrote:
Thanks, Erik.
How do I remember this ca. 40 years later?
Well, while servicing these systems they would frequently stop with a "Memory
Protect Error" (various Operating Systems).
Guess what the intuitive action was: Replace the "Memory Protect Bo
Are there any archived issues of _Processor_ from the 80's or early 90's,
online anywhere?
I seem to recall it went through at least one major printing format change
(from newsprint to cheap bound magazine or the other way around).
It sometimes had articles but was mostly ads from second-hand m
On Thu, 5 May 2016, Erik Baigar wrote:
> One does not really want to know what is possible (and done) today -
> where there is no need to dig tunnels any more ;-)
I don't really want to know because it'd probably be dangerous to know
such things. So, I heartily agree.
What I figure is that "th
On Thu, 5 May 2016, Shoppa, Tim wrote:
> Are there any archived issues of _Processor_ from the 80's or early
> 90's, online anywhere?
That sounds really interesting. If you find a source, I hope you will
share.
-Swift
On Thu, 5 May 2016, Swift Griggs wrote:
On Thu, 5 May 2016, Shoppa, Tim wrote:
Are there any archived issues of _Processor_ from the 80's or early
90's, online anywhere?
That sounds really interesting. If you find a source, I hope you will
share.
-Swift
Ah, I got my start in the industry
On Thu, 5 May 2016, Sean Caron wrote:
> I kind of miss thumbing through it, like Computer Shopper -- remember
> that behemoth? :O
I used to trek to the public library in a little town of 800 folks. The
library was about the size of my living room. However, they got Byte and
Computer Shopper. I
> HP-HIL uses what *should* be a pretty basic serial protocol with available d$
I haven't, but my own tendency would be to build a UART from a clock
generator (divided down) and some shift registers for the hardware side
of it, then add some logic for the host interface - I might use a
115200 seri
On Wed, May 04, 2016 at 09:21:18PM -0400, Mouse wrote:
[...]
> Sure you can tunnel; you just have to initiate the tunnel connection
> from the inside. I too have a host (at work) that's behind double NAT;
[...]
>
> Of course, this needs a friendly host on the outside. In my case, I
> find that c
On 2016-05-05 6:47 PM, Mouse wrote:
faster, lower power, maybe
even cheaper, etc.
TTL could never claim "lower power" :-)
Try Here. They have copies going back to @ 2004
https://archive.org/details/processor_newspaper
--
Wayne Sudol
Riverside Press-Enterprise
A Digital First Media Newspaper
1-951-368-9945
From: cctalk on behalf of Swift Griggs
Sent: Thursday, May 5, 2016
On Wed, May 4, 2016 at 11:45 AM, Lyle Bickley
wrote:
> I just received from S&H a PDF copy of the TSX 6.50 Release Notes - and
> Jay has posted it to the http://tsxplus.classiccmp.org website.
>
> Lots of interesting/helpful information for all you TSX-Plus buffs...
>
> Cheers,
> Lyle
> --
>
>
L
- Original Message -
From: "Tom Watson"
To:
Sent: Thursday, May 05, 2016 10:40 PM
Subject: Re: Facit 4070 to PC interface
> Request for information about a Facit 4070.
...
> Also if you are interested, I have a program that sends out block letters to
> be punched on the tape (along w
Request for information about a Facit 4070.
Yes, it can be hooked up to a parallel port interface. It takes a single
74LS00 chip to generate the proper signals, and the ACK signals. I did it in a
simple jumper wire block (it has a male and female connector along with a
jumper field.
At the
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