3 Apr
2017
3 Apr
'17
9:44 p.m.
http://bitsavers.informatik.uni-stuttgart.de/pdf/tektronix/405x/070-2065-00…
pages 6-37 to 6-41
The format and drive was all done in house. It was originally done on a
horizontal external GPIB drive, the 4923. Tek was on of the first
users of the cartridge. But for non technical reasons was the format used
on the 4051 even though by then better designs had been
adopted.
Sadly not one of the good things that came out of Tek. But knowing the
history all was not a technical decsision like in many large
companies, and as usual a long story.
On Mon, Apr 3, 2017 at 9:10 PM, AJ Palmgren <microtechdart at gmail.com> wrote:
Ah, yes. I'm fascinated by the stranger formats.
Now I'm even more curious, now that you say it isn't the more common
QIC-11 or QIC-24 formats.
Do you know what specific hardware (tape drive models, formatter boards,
etc) that was used to write or read these tapes with this format?
On Mon, Apr 3, 2017 at 5:53 AM, Pete Lancashire <pete at petelancashire.com>
wrote:
I'm going to see if the Tektronix museum is
interested. And if so I'm
sure they can make the software available for download. As to the format,
Tek decided to do it their own way. It is a funky 2 track that has issues
of its own. But your method of recovering the raw track data should work as
a starting point.
-pete
On Sun, Apr 2, 2017 at 11:16 PM, AJ Palmgren via cctalk <
cctalk at classiccmp.org> wrote:
--
Thanks,
AJ Palmgren
http://fb.me/SelmaTrainWreck
https://www.facebook.com/profile.php?id=100010931314283
https://www.linkedin.com/in/aj-palmgren-4a085516/
Pete,
These tapes look to be in beautiful condition! Do you have any plans for
reading or archiving them?
Do you have any idea what format the data might have been written in?
If interested, my site for reading/restoring QIC cartridges of this very
vintage is at
http://QICreader.com
Let me know if I can be of any assistance.
-AJ
2017-04-02 21:08 GMT-07:00 Pete Lancashire via cctalk <
cctalk at classiccmp.org
:
--
Thanks,
AJ Palmgren
http://fb.me/SelmaTrainWreck
https://www.facebook.com/profile.php?id=100010931314283
https://www.linkedin.com/in/aj-palmgren-4a085516/