On 01/22/2017 02:46 PM, Chuck Guzis wrote:
> On 01/22/2017 10:57 AM, allison wrote:
>> I don't know about most people but this solution has been around for
>> decades.
>>
>> I locate the battery on the failed part with a small magnet, then
>> grind the epoxy down to it then pick it out with a shar
My rt11 sends printer output to a lpt.txt. I have not done much more
regarding printing than that. I have an LA180 with serial for my actual
pdp8e.
B
Bill Degnan
twitter: billdeg
vintagecomputer.net
Easier to fix the foam. But a tip to replace the keyboard...use the Compaq
keyboard bare by pressing fingers directly on the board, verify that works
that way (it should). Record the signals' wire path, match the replacement
keyboard wiring.
B
On Jan 23, 2017 12:45 AM, "Randy Dawson" wrote:
>
>
Hi Folks,
I search for a working original DEC Display for my VAXStation (4000/90 &
4000/60) like the VRT16 or VRT19.
Anyone here, who is interested to let one go, to have more free space? ;-)
Please only offers from Germany in the near (200km) of Frankfurt am
Main, as shipping would not be a
Hi William,
I did use the original kybd to trace out the clock and data, most of the keys
work, and I have good scope shots. I am on it again today, because it sure
seems like it should work, using a PC keyboard.
I did not take scope shots on the first test, thinking it should just work.
Ho
Haha! Let me know and we'll crack a deal :)
On Sun, Jan 22, 2017 at 10:04 PM, Brad H <
vintagecompu...@bettercomputing.net> wrote:
> Yes. That remains an item on my hit list.
>
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Sellam
> Ismail
> Sent:
Just to be sure -- the PC keyboard you're using is an actual PC/XT
compatible keyboard, not an AT, correct? The PC/XT used a different
protocol and is incompatible with later keyboards...
- Josh
On 1/23/17 8:53 AM, Randy Dawson wrote:
Hi William,
I did use the original kybd to trace out the
On 01/23/2017 09:36 AM, Josh Dersch wrote:
> Just to be sure -- the PC keyboard you're using is an actual PC/XT
> compatible keyboard, not an AT, correct? The PC/XT used a different
> protocol and is incompatible with later keyboards...
That occurred to me also--it seems so obvious that I passe
On 22/01/2017 20:10, "Tony Duell" wrote:
>> That looks like an opamp to me, with bias pins connected to GND?
>
> Does it? It looks like a 555 timer to me at first glance. I would have
> expected another
> capacitor from pins 2/6 to ground though.
>
> 1 Ground
> 2 Trigger (linked to threshold, a
On 01/23/2017 04:57 AM, allison wrote:
On 01/22/2017 02:46 PM, Chuck Guzis wrote:
On 01/22/2017 10:57 AM, allison wrote:
I don't know about most people but this solution has been around for
decades.
I locate the battery on the failed part with a small magnet, then
grind the epoxy down to it th
Just wanted to share an excerpted story just sent to me by a colleague,
regarding an IBM 7074 supplying data to Java middleware, ultimately feeding
a modern webapp stack:
http://thenewstack.io/happens-use-java-1960-ibm-mainframe/
This comes from a conference which occurred last month titled "Syste
On Mon, Jan 23, 2017 at 6:48 PM, Adrian Graham
wrote:
> On 22/01/2017 20:10, "Tony Duell" wrote:
>
>>> That looks like an opamp to me, with bias pins connected to GND?
>>
>> Does it? It looks like a 555 timer to me at first glance. I would have
>> expected another
>> capacitor from pins 2/6 to gr
On 01/23/2017 11:00 AM, Steven Maresca wrote:
> Just wanted to share an excerpted story just sent to me by a
> colleague, regarding an IBM 7074 supplying data to Java middleware,
> ultimately feeding a modern webapp stack:
> http://thenewstack.io/happens-use-java-1960-ibm-mainframe/
The 7074 was
On 01/23/2017 09:04 AM, Jon Elson wrote:
> Well, it doesn't really matter. If you can find one of the "really
> old" ones, the battery can be replaced and you are good for 5 years
> or so. There must be TONS of these old clock/RAM chips out there, and
> somebody must have saved a few.
Probably
On 2017-01-23 5:16 PM, Chuck Guzis wrote:
On 01/23/2017 11:00 AM, Steven Maresca wrote:
Just wanted to share an excerpted story just sent to me by a
colleague, regarding an IBM 7074 supplying data to Java middleware,
ultimately feeding a modern webapp stack:
http://thenewstack.io/happens-use-jav
> On Jan 23, 2017, at 2:16 PM, Chuck Guzis wrote:
>
> On 01/23/2017 11:00 AM, Steven Maresca wrote:
>> Just wanted to share an excerpted story just sent to me by a
>> colleague, regarding an IBM 7074 supplying data to Java middleware,
>> ultimately feeding a modern webapp stack:
>> http://thene
>> The 7074 was referred to as a "supercomputer". Can any decimal
>> machine really bear that title?
> I suppose it could. I would apply the term to a computer that's the fastest$
Consider Babbage's Analytical Engine. It was decimal and it was, not
so much by intrinsic merit as by lack of compe
On Mon, Jan 23, 2017 at 12:33 PM, Mouse wrote:
> >> The 7074 was referred to as a "supercomputer". Can any decimal
> >> machine really bear that title?
> > I suppose it could. I would apply the term to a computer that's the
> fastest$
>
> Consider Babbage's Analytical Engine. It was decimal an
On 01/23/2017 12:25 PM, Paul Koning wrote:
>
>> On Jan 23, 2017, at 2:16 PM, Chuck Guzis wrote:
>>
>> On 01/23/2017 11:00 AM, Steven Maresca wrote:
>>> Just wanted to share an excerpted story just sent to me by a
>>> colleague, regarding an IBM 7074 supplying data to Java
>>> middleware, ultim
> On Jan 23, 2017, at 3:52 PM, Chuck Guzis wrote:
>
> ...
> It's just that I bridle a bit when hearing the young 'uns refer to any
> physically large machine as a "supercomputer".
>
> It's the same feeling that I get when I see press releases today that
> relate that David Gelernter single-hand
On 23/01/2017 19:07, "Tony Duell" wrote:
>> I didn't think of a 555 in that scenario but that makes sense. I've marked
>> it as such for now, cheers!
>
> Is there another capacitor from the 2/6 junction to chassis? Any other
> components
> around? It might be one of the special SMPSU ICs, but it
On Mon, Jan 23, 2017 at 9:23 PM, Adrian Graham
wrote:
> On 23/01/2017 19:07, "Tony Duell" wrote:
>
>>> I didn't think of a 555 in that scenario but that makes sense. I've marked
>>> it as such for now, cheers!
>>
>> Is there another capacitor from the 2/6 junction to chassis? Any other
>> compone
Clearing out a bunch of stuff I have decided I no longer need around. There may
not be any interest here but thought I'd check first. I have several books
available for the cost of shipping if anyone is interested, otherwise they'll
go to my local book reseller this coming weekend. All are in p
Oh, no. Of course not. Perish the thought.
Sent from my Windows 10 phone
From: Toby Thain
Sent: Monday, January 23, 2017 12:45 PM
To: cctalk@classiccmp.org
Subject: Re: IBM 7074 and then some: "Systems we love" conference
On 2017-01-23 5:16 PM, Chuck Guzis wrote:
> On 01/23/2017 11:00 AM, Stev
On 2017-01-23 6:55 PM, Paul Koning wrote:
On Jan 23, 2017, at 3:52 PM, Chuck Guzis wrote:
...
It's just that I bridle a bit when hearing the young 'uns refer to any
physically large machine as a "supercomputer".
It's the same feeling that I get when I see press releases today that
relate tha
On 2017-01-23 6:52 PM, Chuck Guzis wrote:
On 01/23/2017 12:25 PM, Paul Koning wrote:
On Jan 23, 2017, at 2:16 PM, Chuck Guzis wrote:
On 01/23/2017 11:00 AM, Steven Maresca wrote:
Just wanted to share an excerpted story just sent to me by a
colleague, regarding an IBM 7074 supplying data to
On 23/01/2017 21:38, "Tony Duell" wrote:
> I normally trace connections using my DMM, but of course you have to know
> what will fool it (i.e. low resistance components). I find I have to desolder
> relays, switches, inductors, transformers, low value resistors, etc before
> starting to trace the
> On Jan 23, 2017, at 5:09 PM, Toby Thain wrote:
>
> On 2017-01-23 6:55 PM, Paul Koning wrote:
>>
>>> On Jan 23, 2017, at 3:52 PM, Chuck Guzis wrote:
>>>
>>> ...
>>> It's just that I bridle a bit when hearing the young 'uns refer to any
>>> physically large machine as a "supercomputer".
>>>
On 01/23/2017 01:00 PM, Steven Maresca wrote:
Just wanted to share an excerpted story just sent to me by a colleague,
regarding an IBM 7074 supplying data to Java middleware, ultimately feeding
a modern webapp stack:
http://thenewstack.io/happens-use-java-1960-ibm-mainframe/
This comes from a co
On 01/23/2017 05:45 PM, Jon Elson wrote:
> WOW That is QUITE amazing! And, I can't possibly imagine why
> anyone in their right mind would do this! Seems an emulator on a PC
> would be faster, and way more reliable, not to mention taking up MUCH
> less space, power and cooling. How reliabl
On 01/23/2017 09:04 PM, Chuck Guzis wrote:
On 01/23/2017 05:45 PM, Jon Elson wrote:
WOW That is QUITE amazing! And, I can't possibly imagine why
anyone in their right mind would do this! Seems an emulator on a PC
would be faster, and way more reliable, not to mention taking up MUCH
less s
On 01/23/2017 09:21 PM, Jon Elson wrote:
> Oh, and the picture in the article is CLEARLY a posed IBM sales
> brochure photo, and not from the recent operation at the unnamed
> government agency.
The photo's from Wikipedia, and is a photo of the system at the
Deutsches Museum in Munich, which is a
On 01/23/2017 07:45 PM, Jon Elson wrote:
This blog seems to indicate that there is NO 7074, but an
emulator running on 370 hardware.
http://nikhilism.com/post/2016/systems-we-love/
This makes a lot more sense, some of these microcode
emulations were still available of fairly late machines.
Bob Bener has written a short squib about how the 7070 came into being:
http://www.bobbemer.com/BIRTH.HTM
Funny, in a tragic way.
--Chuck
On 01/23/2017 09:42 PM, Jon Elson wrote:
> On 01/23/2017 07:45 PM, Jon Elson wrote:
>
> This blog seems to indicate that there is NO 7074, but an emulator
> running on 370 hardware.
>> http://nikhilism.com/post/2016/systems-we-love/
>
> This makes a lot more sense, some of these microcode emulat
On Mon, Jan 23, 2017 at 11:38 PM, Adrian Graham
wrote:
> On 23/01/2017 21:38, "Tony Duell" wrote:
>> Oh... The trace isn't open-circuit, is it? Check it with the
>> multimeter. Given the
>> corrosion damage to the tape drive I could well believe PCB problems of a
>> similar nature.
>
> I've meas
On Fri, Jan 20, 2017 at 8:51 PM, Jörg Hoppe wrote:
>
> If you like to have a look (and play beta tester):
>
> Docs on http://retrocmp.com/tools/tu58fs
> C sources and makefile on https://github.com/j-hoppe/tu58fs
FWIW, It doesn't compile on FreeBSD (yes, I do not know if it is supposed to)
tingo@
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