On 4/6/2016 8:22 PM, Fred Cisin wrote:
Wear happens. Particularly on directory tracks, or where you encounter
the snake in Adventure.
But, that doesn't account for the loss of data over time.
Entropy: Could the rust on the cookie be de-oxidizing, and turning back
into non-oxidized ferrous comp
On 2016-Apr-06, at 7:22 PM, Fred Cisin wrote:
> How long were they supposed to last?
> Will they honor those "lifetime guarantee"s?
Try getting a replacement for one of those Lifetime vacuum tubes at Radio Shack.
Hello,
I'm a modest collector of DEC and PDP11 stuff, I always thank who wrote the
PDP11 field guide with the almost complete list of all the existing
boards...
Now comes the idea: could be useful having a website where the field guide
assume a graphical aspect, including pictures of the parts, des
"Try getting a replacement for one of those Lifetime vacuum tubes at Radio
Shack."
Beat me to it. I tried that twenty years ago (with a bad quartet of 7591s)
and needless to say, got nowhere. "We haven't sold those in years!" - as if
that makes any difference, in terms of the warranty?
Sure, I ca
The problem with lifetime warranties is that they're not about the
lifetime of the owner, and they're not about the lifetime of the
product. What it means is "as long as it's a product we're still
selling" (except for those cases where it *really* is the lifetime of
the product.. in which case it m
not sure if anyone mentioned this point yet, but I have found that the
drives destroy good disks a sizable percentage of the time. Keeping the
heads clean and testing a drive before use with an important vintage disk
is key to the longevity of the disk. I also always make a backup copy of
most ev
> On Apr 6, 2016, at 10:22 PM, Fred Cisin wrote:
>
> ...
> Entropy: Could the rust on the cookie be de-oxidizing, and turning back into
> non-oxidized ferrous compounds?
No. If that were true, iron ore would spontaneously turn into iron.
Unfortunately, that does not happen.
paul
On Thu, 7 Apr 2016, Tor Arntsen wrote:
> The problem with lifetime warranties is that they're not about the
> lifetime of the owner, and they're not about the lifetime of the
> product. What it means is "as long as it's a product we're still
> selling"
Well, that's an interesting observation, an
I'm not sure I'd be able to go to that. Its says all items have to be more than
10 years old
MY replica PDP front panels are brand new!!
Rod Smallwood
Original message
>From : stuebera...@yahoo.de
Date : 06/04/2016 - 23:56 (GMTDT)
To : cctalk@classiccmp.org
Subject : VCF Europe, Apri
On Thu, 7 Apr 2016, shad wrote:
Hello,
I'm a modest collector of DEC and PDP11 stuff, I always thank who wrote the
PDP11 field guide with the almost complete list of all the existing
boards...
Now comes the idea: could be useful having a website where the field guide
assume a graphical aspec
Hi,
On Thu, Apr 07, 2016 at 04:00:44PM +0100, R SMALLWOOD wrote:
> I'm not sure I'd be able to go to that. Its says all items have to be
> more than 10 years old
it's just a general rule we use to explain to people that their old
Windows PC isn't considered vintage. Of course there are exceptions
Anke wrote...
=
If anybody has a nicer definition of "vintage" or
=
Please... not here.
Original message
>From : jw...@classiccmp.org
Date : 07/04/2016 - 17:18 (GMTDT)
To : cctalk@classiccmp.org
Subject : RE: VCF Europe, April 30th - May 1st, Munich + registration for VCF
Berlin
Anke wrote...
=
If anybody has a nicer definition of "vintage" or
=
Please... not here
Hi,
On Thu, Apr 07, 2016 at 11:18:21AM -0500, Jay West wrote:
> Anke wrote...
> =
> If anybody has a nicer definition of "vintage" or
> =
>
> Please... not here.
no, not here of course, just send a mail to me directly or to
i...@vcfb.de.
Regards, Anke
I want to be clear... I was not saying Anke shouldn't have posted about VCF
here. His post was 100% fine and appreciated.
I just didn't want to get into a "what is classic/vintage" thread again ;)
J
On 04/07/2016 02:32 AM, Tor Arntsen wrote:
> The problem with lifetime warranties is that they're not about the
> lifetime of the owner, and they're not about the lifetime of the
> product. What it means is "as long as it's a product we're still
> selling" (except for those cases where it *reall
On 04/07/2016 04:56 AM, william degnan wrote:
> not sure if anyone mentioned this point yet, but I have found that the
> drives destroy good disks a sizable percentage of the time. Keeping the
> heads clean and testing a drive before use with an important vintage disk
> is key to the longevity of
On 4/7/2016 11:11 AM, Chuck Guzis wrote:
On 04/07/2016 02:32 AM, Tor Arntsen wrote:
The problem with lifetime warranties is that they're not about the
lifetime of the owner, and they're not about the lifetime of the
product. What it means is "as long as it's a product we're still
selling" (excep
A friend has a large set of paper tape which seems to be from a DG User
group (not sure about that, but label on box sort of implies that).
The tape pile is fanfold about 10" across in a DG box specially made for
such use.
We hope to have a reader to digitize it soon, but wonder if anyone kno
If you have a circuit which is normally designed to
operate with an unregulated supply, through a regulator...
say unregulated +8 through a 7805 to a regulated +5 and
you want to test it independent of the +8 supply, if
you leave the unregulated rail unattached and put +5
switcher straight onto the
You should be just fine.
On 4/7/2016 1:38 PM, Bill Sudbrink wrote:
> If you have a circuit which is normally designed to
> operate with an unregulated supply, through a regulator...
> say unregulated +8 through a 7805 to a regulated +5 and
> you want to test it independent of the +8 supply, if
> y
Err.. unless the voltage of the switcher is identical to that of the 7805,
then one device will source current, and the other will sink it.
Like putting two 6V batteries in parallel, where one is fresh and the other
weak. Current will flow until the potentials are equalized. But with two
regulated
Per his description, the 7805's input will be open. It will not try to
source any current, as it will have none to give.
I suppose there might be a little leakage.
--
Will
On Thu, Apr 7, 2016 at 4:58 PM, drlegendre . wrote:
> Err.. unless the voltage of the switcher is identical to that of the
-Oorspronkelijk bericht-
From: Bill Sudbrink
Sent: Thursday, April 07, 2016 10:38 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: Voltage regulator with alternate voltage source...
If you have a circuit which is normally designed to
operate with an unregulated supply,
On 04/07/2016 2:03 PM, William Donzelli wrote:
Per his description, the 7805's input will be open. It will not try to
source any current, as it will have none to give.
I suppose there might be a little leakage.
--
Will
If his intention is to bypass the 7805 then it should have both input
and
drlegendre wrote:
> Not saying it's going to smoke-out, but it does
> seem like a wonky thing to do.
I disagree about "wonky" let me try with more
diagram and less English:
(+8)
|
VIN|ceramic cap
|-][-
___| |
| 7805 |--GROUND
|
|
Maybe I'm overthinking this. If I just put
regulated +5 on the 7805 VIN will it work?
Bill S.
On Thu, 7 Apr 2016, Bill Sudbrink wrote:
Maybe I'm overthinking this. If I just put
regulated +5 on the 7805 VIN will it work?
Isn't the minimum input voltage for a 7805, 6vdc?
g.
--
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/c
On 07/04/16 00:56, Anke Stüber wrote:
the 17th edition of VCF Europe[0] is coming soon! It will take place on
April 30th and May 1st in Munich, Germany. Please be aware that the
information on the English version of the website might be outdated or
less detailed than on the German page, but Googl
Star Trek was a quite common BASIC (game ?) program on at least the HP 2000
time share systems, I've seen quite a few variations, on ran on RT-11.
Be quite careful with the tape, the folds can be quite fragile depending on
how and where the tape was stored.
When I had my 'computer room' set up (i
On Thu, 7 Apr 2016, Pete Lancashire wrote:
> Star Trek was a quite common BASIC (game ?) program on at least the HP 2000
> time share systems, I've seen quite a few variations, on ran on RT-11.
That reminds me of the "Space Travel" game/sim that Ken Thompson wrote for
the first copy/iteration of U
On Thu, Apr 7, 2016 at 9:51 AM, Swift Griggs wrote:
> On Thu, 7 Apr 2016, Pete Lancashire wrote:
> > Star Trek was a quite common BASIC (game ?) program on at least the HP
> 2000
> > time share systems, I've seen quite a few variations, on ran on RT-11.
>
> That reminds me of the "Space Travel" g
On 04/07/2016 2:25 PM, geneb wrote:
On Thu, 7 Apr 2016, Bill Sudbrink wrote:
Maybe I'm overthinking this. If I just put
regulated +5 on the 7805 VIN will it work?
Isn't the minimum input voltage for a 7805, 6vdc?
g.
More like 7VDC input minimum (dropout voltage) for 7805 - there are data
On 04/07/2016 2:18 PM, Bill Sudbrink wrote:
drlegendre wrote:
Not saying it's going to smoke-out, but it does
seem like a wonky thing to do.
I disagree about "wonky" let me try with more
diagram and less English:
(+8)
|
VIN|ceramic cap
|-][-
___| |
| 78
On 04/07/2016 12:12 PM, Chuck Guzis wrote:
I'll go one step further and state that if you hear your drive
squealing, throw the disk away and clean the heads before you insert
another disk.
If you even get the opportunity. I remember a disk - it was either Parrot
or Wabash, I loathe them in equ
Does anyone have a list of the capacitors on the analogue board and power
supply for a Mac SE/30?
--
David Griffith
d...@661.org
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-ma
On 04/07/2016 12:11 PM, Chuck Guzis wrote:
My water heater supposedly has a guarantee for replacement for as long
as I own my home. I haven't had to claim a replacement yet.
I wonder if that also covers parts - e.g. elements and thermostats - or if
they try and weasel out of it and only allow
Does this warning assume that there is something on Vin, and not open?
With a quick look at the internal schematic of an old-school 7805, it
seems like what Bill suggests (leaving Vin open) will not actually do
much.
--
Will
On Thu, Apr 7, 2016 at 7:23 PM, John Robertson wrote:
> On 04/07/2016 2
On 4/7/16 10:11 AM, Chuck Guzis wrote:
as a guarantee for replacement for as long
> as I own my home. I haven't had to claim a replacement yet.
>
How often do you change the anode rod?
On 04/07/2016 04:41 PM, Al Kossow wrote:
>
>
> On 4/7/16 10:11 AM, Chuck Guzis wrote: as a guarantee for replacement
> for as long
>> as I own my home. I haven't had to claim a replacement yet.
>>
>
> How often do you change the anode rod?
No anode rod. The tank is polybutylene.
I suspect t
"...if you leave the unregulated rail _unattached_ and put +5
switcher straight onto the regulated +5 rail..."
My error, I read that as "attached".
In any event, just lift both the 7805 IN and OUT pins, and then supply
known-solid +5DC between the OUT and GND pads on the board.
No, you can't fee
You probably can't get the water heater replacement until the old COMPLETELY
fails, which means it leaks and floods your house.
- Original Message -
From: Chuck Guzis
To: General Discussion: On-Topic and Off-Topic Posts
Sent: Thu, 07 Apr 2016 13:11:14 -0400 (EDT)
Subject: Re: Why do goo
Anyone know if Joe Rigdon is still around?
Thanks,
-Connor K
Hey folks,
I've been on a tear trying to resurrect old projects here, and next on
the list is an ADM 3a.
This particular 3a has no horizontal scan. None at all. I just get a
vertical line down the center of the screen. First thing I checked was
the horizontal deflector on the yoke, which seems s
> On Apr 7, 2016, at 7:08 PM, Connor Krukosky wrote:
>
> Anyone know if Joe Rigdon is still around?
>
> Thanks,
> -Connor K
>
There is a name I haven’t heard in a *LONG* time.
Zane
On Thu, Apr 07, 2016, Seth Morabito wrote:
>
> Hey folks,
>
> I've been on a tear trying to resurrect old projects here, and next on
> the list is an ADM 3a.
>
> This particular 3a has no horizontal scan. None at all. I just get a
> vertical line down the center of the screen. First thing I chec
On Thu, Apr 07, 2016 at 04:08:42PM -0700, Charles Anthony wrote:
>
> I have some code that does an X-11 emulation of the Atari Tempest vector
> graphics display; I'm thinking of wedging it into the simh PDP8 code to
> emulate the 338 and PDP-1 displays.
>
That woyld be fun :) I could perhaps be
* On Thu, Apr 07, 2016 at 11:34:52PM -0500, Eric Christopherson
wrote:
>
> Is this the same one that was showing all exclamation points on every
> other line?
Nope, this is a different one. I got this one "as-is" in a known non-working
state.
-Seth
As a number of folks have pointed out it's not the magnetic particles - rust
is pretty stable; they read a 60 year old RAMAC at the CHM every week or so.
And it's not likely the binder, fully cured epoxies are also very stable.
Note disks do not have the tension problem that tape has.
And it's no
Hi Jim,
short version: Yes, I can confirm existence of such a software and
I'd be highly interested in a copy. Of course I can
offer digitizing it ;-)
longer version: I am preserving various Rolm (later Loral) 16 bit
machines which are hardened, military machines w
On 04/07/2016 10:06 PM, Tom Gardner wrote:
> And it's not likely the binder, fully cured epoxies are also very
> stable. Note disks do not have the tension problem that tape has.
There, I have to respectfully disagree. Floppy disks do not use an
epoxy binder, but usually a polyurethane-based one
This from Fuji may also help a bit when examining the makeup of a floppy
disk:
http://www.fujifilmusa.com/shared/bin/Magnetic_Media_Terminology.pdf
--Chuck
52 matches
Mail list logo
