That was a very interesting read! The type of
thing I could see myself doing over 40 years ago
when once I'd come up with a neat idea and either
did preliminary coding or hardware design
suggesting it would work I'd jump right into it
and find optimistic 1 month project timelines
stretching
On Fri, Jun 28, 2019 at 2:16 AM Liam Proven via cctalk <
cctalk@classiccmp.org> wrote:
> On Thu, 27 Jun 2019 at 17:21, Warner Losh via cctalk
> wrote:
>
> > I saw this
> > half-dollar sized plastic fob on the desk and asked what it was for.
>
> If I may just say -- only about 5% of humanity know
On Fri, Jun 28, 2019 at 07:02:42AM -0500, John Foust via cctalk wrote:
> At 04:15 AM 6/28/2019, Liam Proven via cctalk wrote:
> > I don't even know if a half a dollar is a note or a coin, and
> >that's without getting extra-pedantic and pointing out that about a
> >dozen countries call their
At 04:15 AM 6/28/2019, Liam Proven via cctalk wrote:
> I don't even know if a half a dollar is a note or a coin, and
>that's without getting extra-pedantic and pointing out that about a
>dozen countries call their currencies the "dollar".
If you were a real pedant, you would've provided a list of
On Thu, 27 Jun 2019 at 17:21, Warner Losh via cctalk
wrote:
> I saw this
> half-dollar sized plastic fob on the desk and asked what it was for.
If I may just say -- only about 5% of humanity know how big that is. I
don't. I don't even know if a half a dollar is a note or a coin, and
that's
Look at http://www.tapeheads.net/showthread.php?t=39958
Marc
On Thu, Jun 27, 2019 at 8:30 AM Mark J. Blair via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> > On Jun 27, 2019, at 8:21 AM, Warner Losh via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > Back when I got to school and I was
On 6/27/19 10:03 AM, John Foust via cctalk wrote:
> At 11:32 AM 6/27/2019, Jon Elson via cctalk wrote:
>> If you google "magnetic tape viewer" they have pictures of what I think the
>> earlier poster described.
>
> I see quite a few on eBay and Amazon. Looks like you just need to
> pick a
At 11:32 AM 6/27/2019, Jon Elson via cctalk wrote:
>If you google "magnetic tape viewer" they have pictures of what I think the
>earlier poster described.
I see quite a few on eBay and Amazon. Looks like you just need to
pick a Japanese one? What's the distinguishing characteristic of a
On 06/27/2019 10:30 AM, Mark J. Blair via cctalk wrote:
I don't recall seeing one of those in either of the computer rooms I worked in
as a student back in the late 1980s. I would love to get my hands on one (or
make one?) now.
One brand of a liquid you put on the tape is MagnaSee.
If you
On 06/27/2019 10:21 AM, Warner Losh via cctalk wrote:
Back when I got to school and I was hanging around the computer room on
campus (back when it was THE room on campus with computers), I saw this
half-dollar sized plastic fob on the desk and asked what it was for. The
on-staff operator took a
In days old olde - - we used to use liquid stuff like this when
splicing video tape too... It would shoe the head scan lines Ed#
In a message dated 6/27/2019 9:09:50 AM US Mountain Standard Time,
cctalk@classiccmp.org writes:
I still use KyRead (older 70s era versions were
I still use KyRead (older 70s era versions were Magnasee and Visomag),
which are applied directly to the magnetic medium. Basically a mixture
of micron-sized pyrolytic iron powder and an inert, rapidly-evaporating
carrier. Shake the bottle up and drop some on the medium. As the
carrier
On Thu, Jun 27, 2019 at 9:42 AM Al Kossow via cctalk
wrote:
>
>
> On 6/27/19 8:21 AM, Warner Losh via cctalk wrote:
> > I saw this
> > half-dollar sized plastic fob on the desk and asked what it was for.
>
> http://qicreader.blogspot.com/p/track-visualization.html
>
> shows a couple of them
>
On 6/27/19 8:21 AM, Warner Losh via cctalk wrote:
> I saw this
> half-dollar sized plastic fob on the desk and asked what it was for.
http://qicreader.blogspot.com/p/track-visualization.html
shows a couple of them
It is true. Inter-block gaps are huge and easy to spot/splice.
That is why writing short tape blocks wastes so much tape.
On 6/27/19 8:21 AM, Warner Losh via cctalk wrote:
> I've also heard people tell stories of using this fob to find the end of
> the marks and records on mag tape to splice
> On Jun 27, 2019, at 8:21 AM, Warner Losh via cctalk
> wrote:
>
> Back when I got to school and I was hanging around the computer room on
> campus (back when it was THE room on campus with computers), I saw this
> half-dollar sized plastic fob on the desk and asked what it was for. The
>
On Thu, Jun 27, 2019 at 8:42 AM Kevin McQuiggin via cctalk <
cctalk@classiccmp.org> wrote:
> In the early days of cyber crime (it was called “computer crime” back in
> the 1980s), fraudsters would purchase an aerosol spray with tiny metal
> particles in it (I forget what the specific valid use
On Thu, 27 Jun 2019, Noel Chiappa wrote:
> From: Liam Proven
> This is *epic*.
Indeed. I was blown away by the complexity of his technique for reading
the digits.
I can't believe there wasn't a much easier technique, though, e.g. using a
logic analyzer and a small program to read
Mag stripe readers were expensive and hard to acquire in those days, so
this was the chosen method of recovering track data from credit cards.
Readers were cheap. Writers were expensive and hard to get.
- Ethan
I love the walk through things. I'd clearly have found a wired, digital, method
of doing it ( printer port or such ).
I had a similar problem. I was recovering 4004 code printed out with what
looked like a ASR33 print. I did it manually. On looking at the data, I suspect
the platen had ruts as
On 6/27/19 7:30 AM, Noel Chiappa via cctalk wrote:
> > From: Liam Proven
>
> > This is *epic*.
>
> Indeed. I was blown away by the complexity of his technique for reading
> the digits.
>
> I can't believe there wasn't a much easier technique, though, e.g. using a
> logic analyzer and a
In the early days of cyber crime (it was called “computer crime” back in the
1980s), fraudsters would purchase an aerosol spray with tiny metal particles in
it (I forget what the specific valid use case was, but it was legitimate), and
apply the spray to the mag stripe on the back of credit
> From: Liam Proven
> This is *epic*.
Indeed. I was blown away by the complexity of his technique for reading
the digits.
I can't believe there wasn't a much easier technique, though, e.g. using a
logic analyzer and a small program to read through the ROS!
Perhaps the challenge of
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