Back in the late 70s early 80s one of Dad's work colleagues came up with this
circuit for interfacing
an IBM I/O Selectric to a microcomputer. We had one, which we planned to use
with our Fairchild/Mostek
F8 development board, but it never got done - my brother and I wanted a
computer with a scr
I had the large ibm calcomp plotter if big wide one we have the same
... it is in the hp display case at smecc museum
there was a fortran graphics text book we had adn I had gotten with a HP
3000 and it had a interface board ( parallel interface?? too many
years)
I made it
Jay,
I can certainly appreciate your enthusiasm.. but for some reason, I found
it particularly (and oddly) funny that someone would post a link to "Hey,
this really cool thing would be here - if it were, in fact, here - but it
isn't".
Now don't take +me+ so seriously, then, eh? It's all in good h
On 12/22/2015 9:06 PM, drlegendre . wrote:
> Ok..
>
> On Tue, Dec 22, 2015 at 4:17 PM, Jay Jaeger wrote:
>
>> FYI, the January 2016 issue of Nuts & Volts magazine has an ESR
>> meter. (...)
>>
>> (Though I see the January issue is not there yet).
>>
>
> So then what's the point of sending the l
Ok..
On Tue, Dec 22, 2015 at 4:17 PM, Jay Jaeger wrote:
> FYI, the January 2016 issue of Nuts & Volts magazine has an ESR
> meter. (...)
>
> (Though I see the January issue is not there yet).
>
So then what's the point of sending the link if the interesting content
isn't actually present?? ;-p
Original Message
Subject: XY11 Manual, Anyone?
From:"Mattis Lind"
Date:Wed, December 23, 2015 2:53 am
To: "General Discussion: On-Topic and Off-Topic Posts"
On 22/12/2015 20:50, "Terry Stewart" wrote:
> Hi,
>
> I've written up my recent third Apple II repair, this time an Apple IIe.
> http://www.classic-computers.org.nz/blog/2015-12-22-appleiIIe-no-video.htm
>
> One interesting aspect of this repair is that piggy-backing a logic chip
> helped co
FYI, the January 2016 issue of Nuts & Volts magazine has an ESR meter.
It uses a 1ma panel meter, but of course one could substitute a resistor
and use a voltmeter or a multi-meter with a 1ma scale as well.
http://www.nutsvolts.com/magazine
(Though I see the January issue is not there yet).
It a
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Jonas
> Otter
> Sent: 22 December 2015 21:35
> To: cctalk@classiccmp.org
> Subject: Re: RE: EAI TR-10 Patch Plugs
>
> On 2015-12-20 23:43, Dave Wade wrote:
> >
> >> -Original Message-
> >> Fro
Or it is a mechanical fault due to a package/die bond wire becoming an open
circuit.
This could happen to where the wire joins to either the package or the die pad,
or
a wire that was fused due to excess current. Hard to tell unless you decap the
package.
On 12/22/2015 1:32 PM, Alexandre Souz
On 2015-12-20 23:43, Dave Wade wrote:
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of
ste...@malikoff.com
Sent: 20 December 2015 22:23
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: EAI TR-10 Patch Plugs
--
Becaise they have diodes to gnd/vcc. And the common failure of a diode is a
rupture of the barrier and so, it gets shorted. So the gate is shorted to
ground or vcc
Enviado do meu Tele-Movel
Em 22/12/2015 19:29, "Chuck Guzis" escreveu:
> On 12/22/2015 01:10 PM, Alexandre Souza wrote:
>
>> It work
On 12/22/2015 01:10 PM, Alexandre Souza wrote:
It works if the gate is open. But if it is shorted to gnd/vcc, you're
in trouble :)
In my experience, this is the case with a lot of 4000-series CMOS.
Don't exactly understand why.
--Chuck
>It works if the gate is open. But if it is shorted to gnd/vcc, you're in
>trouble :)
Yea. In my case the chip was quite cool, so I figured it wasn't shorted
and took the risk. On reflection checking vcc/gnd with a multimeter would
be a more definitive way of checking for a short of that nature.
It works if the gate is open. But if it is shorted to gnd/vcc, you're in
trouble :)
Enviado do meu Tele-Movel
Em 22/12/2015 19:09, "Rik Bos" escreveu:
>
>
> > -Oorspronkelijk bericht-
> > Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Terry Stewart
> > Verzonden: dinsdag 22 de
> -Oorspronkelijk bericht-
> Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Terry Stewart
> Verzonden: dinsdag 22 december 2015 21:50
> Aan: General Discussion: On-Topic and Off-Topic Posts
> Onderwerp: Piggybacking 74LS logic chips to confirm a suspected fault
>
> Hi,
>
> I'
Hi,
I've written up my recent third Apple II repair, this time an Apple IIe.
http://www.classic-computers.org.nz/blog/2015-12-22-appleiIIe-no-video.htm
One interesting aspect of this repair is that piggy-backing a logic chip
helped confirm a faulty one. I'd only ever used this technique with RAM.
On 12/22/15 10:57 AM, Al Kossow wrote:
Could the 552 just be a serial
number `?
It is the version number of the program
There is an entry in the directory "RPO6VER522"
along with "RP06.EXE"
It is nice that the Massbus emulator disks have been found.
Could the 552 just be a serial
number `?
It is the version number of the program
There is an entry in the directory "RPO6VER522"
along with "RP06.EXE"
Hey everyone, just got my Apple1 powered up!!! The PIA is hot to the
touch, I heard they run hot, how hot is too hot??
Looking for an Apple II keyboard to convert for use on my Apple1. Anyone
have one for sale or trade?
Thanks!
-Nick
Some VFDs are not just plain PWM pulses, but a stepped sort of thing
that sort-of approximates a sinewave.
As I said, all this depends on what VFD you are using, and what you
might have to act as a filter, and what the load is - a case-by-case
thing.
--
Will
On Tue, Dec 22, 2015 at 12:12 PM, Jon
On 12/22/2015 10:25 AM, William Donzelli wrote:
Another thought - with scrap transformer prices in a crapper right
now. you might also be able to pick up a really beefy isolation
transformer for spare change, in order to clean up a VFD. Generally,
normal industrial grade 50 Hz transformers will n
I have in mind to connect a machine to an IBM 1627 (CALCOMP 565) plotter
and then the XY11 which just arrive would fit nicely, I think.
But I cannot seem to find any manual for the XY11. Anyone know of a manual?
The board is rather simple so it should be possible to work out the details
on how to
Another thought - with scrap transformer prices in a crapper right
now. you might also be able to pick up a really beefy isolation
transformer for spare change, in order to clean up a VFD. Generally,
normal industrial grade 50 Hz transformers will not care too much if
you use them at 60 Hz.
--
Wil
I can see that as well - and I can see a slim chance of it actually
going for $25K, as well. Cripes, those TUs are half way there!
Think of the time of the year, and think of the size bonuses that some
people get.
--
Will
On Tue, Dec 22, 2015 at 10:28 AM, william degnan wrote:
> On Tue, Dec 22,
$50,000 BIN, in unknown condition but had failing electronics when last
booted 18 years ago?
Yikes! For that money, I'd expect it working, debugged, and free worldwide
white glove delivery... and it's still too much.
TK
On Tue, Dec 22, 2015 at 9:55 AM, Noel Chiappa
wrote:
> Check out:
>
>
> ht
On Tue, Dec 22, 2015 at 9:55 AM, Noel Chiappa
wrote:
> Check out:
>
>
> http://www.ebay.com/itm/DEC-PDP8-I-MINICOMPUTER-PDP8-PDP-8-PDP-8/201487700097
>
> I know it has a bunch of DECTape drives, but...
>
> Noel
>
I could see the final sale being north of $15,000
--
Bill
> -Original Message-
> From: Robert Jarratt [mailto:robert.jarr...@ntlworld.com]
> Sent: 20 December 2015 07:04
> To: 'General Discussion: On-Topic and Off-Topic Posts'
> Subject: RE: VAX 4000-500 PSU Overload?
>
>
>
> The problem is just how to physically do it. But in any case I don'
Check out:
http://www.ebay.com/itm/DEC-PDP8-I-MINICOMPUTER-PDP8-PDP-8-PDP-8/201487700097
I know it has a bunch of DECTape drives, but...
Noel
I'll check on the other URLs a little later.
A very cursory glance at eBay shows multiple Magic Desk cartridges for
around $12.
On Sunday, December 20, 2015, Mike Boyle wrote:
> On Sun, Dec 20, 2015 at 9:48 AM, Mike Whalen >
> wrote:
>
> > On Saturday, December 19, 2015, Mike > wrote:
> >
> >
On 2015-12-22 10:08 AM, Nico de Jong wrote:
On Tue, Dec 22, 2015 at 10:17 PM, Nico de Jong wrote:
Original Message -
From: "Mike Ross"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Tuesday, December 22, 2015 9:41 AM
Subject: Odd disk image format... .552?
Recently
On Tue, Dec 22, 2015 at 10:17 PM, Nico de Jong wrote:
> Original Message -
> From: "Mike Ross"
> To: "General Discussion: On-Topic and Off-Topic Posts"
>>
>> Sent: Tuesday, December 22, 2015 9:41 AM
>> Subject: Odd disk image format... .552?
>>
>>
>>> Recently found some long-lost imag
I have also sent him an email.
Thanks Alexandre.
On Tue, Dec 22, 2015 at 7:26 AM, Mike Ross wrote:
> I've sent him an email. In case he doesn't get it you could ask him to
> check his spam folder! :-)
>
> Thanks!
>
> On Wed, Dec 23, 2015 at 1:10 AM, Alexandre Souza
> wrote:
> > His address is
I've sent him an email. In case he doesn't get it you could ask him to
check his spam folder! :-)
Thanks!
On Wed, Dec 23, 2015 at 1:10 AM, Alexandre Souza
wrote:
> His address is symphony.robot...@gmail.com. his name is Sergio. You can all
> talk directly to him.
>
> Enviado do meu Tele-Movel
>
His address is symphony.robot...@gmail.com. his name is Sergio. You can all
talk directly to him.
Enviado do meu Tele-Movel
Em 22/12/2015 10:06, "Dave Wade" escreveu:
>
>
> > -Original Message-
> > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Santo
> > Nucifora
> > Se
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Santo
> Nucifora
> Sent: 22 December 2015 12:00
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: Ferroresonant transformers and 3278
>
> On Tue, Dec 22, 2015 at 6:55 AM, Alexan
On Tue, Dec 22, 2015 at 10:17 PM, Nico de Jong wrote:
> Original Message -
> From: "Mike Ross"
> To: "General Discussion: On-Topic and Off-Topic Posts"
>
> Sent: Tuesday, December 22, 2015 9:41 AM
> Subject: Odd disk image format... .552?
>
>
>> Recently found some long-lost images of 5
On Tue, Dec 22, 2015 at 6:55 AM, Alexandre Souza <
alexandre.tabaj...@gmail.com> wrote:
> That is easy, it is fairly common here. I know of a friend who has some.
>
> Enviado do meu Tele-Movel
> Em 22/12/2015 09:51, "Mike Ross" escreveu:
>
> > Do we have any South American correspondents listenin
Oh then we should talk... do you know what condition they are in and
what power they are designed for? I'd definitely be interested in
getting a couple in good shape - although shipping to NZ would be...
expensive!
Contact me off-list if you like.
Mike
On Wed, Dec 23, 2015 at 12:55 AM, Alexandre
That is easy, it is fairly common here. I know of a friend who has some.
Enviado do meu Tele-Movel
Em 22/12/2015 09:51, "Mike Ross" escreveu:
> On Wed, Dec 23, 2015 at 12:44 AM, Santo Nucifora
> wrote:
> > On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert
> wrote:
> >
> >> On 2015-Dec-22, at 2:28
On Wed, Dec 23, 2015 at 12:44 AM, Santo Nucifora
wrote:
> On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert wrote:
>
>> On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
>> > Ah, a terminal it is! Thank you.
>> >
>> > On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
>> > wrote:
>> >
>> >>> Sincere q
On Tue, Dec 22, 2015 at 5:52 AM, Brent Hilpert wrote:
> On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
> > Ah, a terminal it is! Thank you.
> >
> > On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> > wrote:
> >
> >>> Sincere query.. as the goog turns up nothing meaningful..
> >>
> >> Try IBM
On 2015-Dec-22, at 2:28 AM, drlegendre . wrote:
> Ah, a terminal it is! Thank you.
>
> On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> wrote:
>
>>> Sincere query.. as the goog turns up nothing meaningful..
>>
>> Try IBM 3278.
>>
>> Hint: one of those popular terminal families in the world.
I'd die for a vt100... :)
Enviado do meu Tele-Movel
Em 22/12/2015 08:28, "drlegendre ." escreveu:
> Ah, a terminal it is! Thank you.
>
> On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
> wrote:
>
> > > Sincere query.. as the goog turns up nothing meaningful..
> >
> > Try IBM 3278.
> >
> > Hin
Ah, a terminal it is! Thank you.
On Mon, Dec 21, 2015 at 9:30 PM, William Donzelli
wrote:
> > Sincere query.. as the goog turns up nothing meaningful..
>
> Try IBM 3278.
>
> Hint: one of those popular terminal families in the world.
>
> --
> Will
>
On Tue, Dec 22, 2015 at 11:07 PM, Christian Corti
wrote:
> On Mon, 21 Dec 2015, William Donzelli wrote:
>>
>> But considering the mix of 50 and 60 Hz stuff you likely have by now
>> (that is what you get for moving!), spending some decent money on a
>> real VFD might be worth it. I might think a c
On 2015-Dec-22, at 2:07 AM, Christian Corti wrote:
> On Mon, 21 Dec 2015, William Donzelli wrote:
>> But considering the mix of 50 and 60 Hz stuff you likely have by now
>> (that is what you get for moving!), spending some decent money on a
>> real VFD might be worth it. I might think a cheap VFD m
On Mon, 21 Dec 2015, William Donzelli wrote:
But considering the mix of 50 and 60 Hz stuff you likely have by now
(that is what you get for moving!), spending some decent money on a
real VFD might be worth it. I might think a cheap VFD may give
ferroresonant iron fits with all those extra harmoni
Original Message -
From: "Mike Ross"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Tuesday, December 22, 2015 9:41 AM
Subject: Odd disk image format... .552?
> Recently found some long-lost images of 5 1/4" floppies that were sent
> to me... 10-15 years ago. Here's on
Recently found some long-lost images of 5 1/4" floppies that were sent
to me... 10-15 years ago. Here's one of them:
http://www.corestore.org/RP06.552
I've never seen that .552 file extension before. Any clue? It's
possible that refers to a version number rather than some obscure disk
image form
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