2 May
2020
2 May
'20
6:21 a.m.
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at
at&t?
Cheers & thanks!
2 May
2 May
8:32 a.m.
On 5/2/20 6:21 AM, emanuel stiebler via cctalk wrote:
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at
at&t?
Depends which version of the 3B2 you have.
See: http://www.unixwiz.net/3b2/tapedrives.html
--Chuck
8:52 a.m.
On Sat, May 2, 2020, 11:32 Chuck Guzis via cctalk <cctalk at classiccmp.org wrote:
On 5/2/20 6:21 AM, emanuel stiebler via cctalk wrote:
I think a UNIX PC is a 3B1, not a 3B2.
Patrick Finnegan
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at
at&t?
Depends which version of the 3B2 you have.
9:53 a.m.
On 5/2/20 8:52 AM, Patrick Finnegan via cctalk wrote:
I think a UNIX PC is a 3B1, not a 3B2.
Yes, the 7300/3B1 was officially the "Unix PC". My point was that the
3B2 notes say that particular system used the Cipher 525 floppytape and
was 23 MB capacity. This agrees with what I know about the 7300 tape
drive--it required one to format a tape and was also 23 MB capacity.
I think it's reasonable to suppose that the 7300 also used the Cipher
floppytape drive.
I was speculating that it might also have been possible to interface to
a SCSI or QIC-02 tape drive.
Jon, I've "lost" my car in shopping mall parking lots, but how does one
"lose" a CDC Keystone drive? :)
--Chuck
10:16 a.m.
On 2020-05-02 11:32, Chuck Guzis via cctalk wrote:
On 5/2/20 6:21 AM, emanuel stiebler via cctalk wrote:
Sorry, I should have been a "little" more precise.
the 3b1, and the tapes look like QIC cartriges ...
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at
at&t?
Depends which version of the 3B2 you have. 
4 May
4 May
6:17 a.m.
The tape interface I have for my UNIX PC is indeed a floppy tape interface,
says "FTAPE" near the connector on the outside. I haven't paired a drive
with it yet.
Thanks,
Jonathan
On Sat, May 2, 2020 at 1:16 PM emanuel stiebler via cctalk <
cctalk at classiccmp.org> wrote:
On 2020-05-02 11:32, Chuck Guzis via cctalk wrote:
On 5/2/20 6:21 AM, emanuel stiebler via cctalk
wrote:
> Hi,
> during my move, I think I lost my tape drive, which was attached to my
> at&t unix pc (68000 based).
> Anybody knows of the top of their head, if I could read the tapes on any
> other machine? Was it anything "standard", or did they do their own at
at&t?
Depends which version of the 3B2 you have.
Sorry, I should have been a "little" more precise.
the 3b1, and the tapes look like QIC cartriges ...
8:51 a.m.
On 5/4/20 6:17 AM, systems_glitch via cctalk wrote:
The tape interface I have for my UNIX PC is indeed a
floppy tape interface,
says "FTAPE" near the connector on the outside. I haven't paired a drive
with it yet.
Easy enough to tell without opening things up. The Cipher 525 is a
full-height drive; cartridges are inserted and locked in by a lever
located just below (or above) the tape slot, that, when a cart is loaded
obstructs the tape cart access by requiring a quarter-turn from being
horizontal to vertical.
It's the only floppytape drive that I'm aware of that works this way.
--Chuck
2 May
2 May
9:14 a.m.
On 05/02/2020 08:21 AM, emanuel stiebler via cctalk wrote:
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at
at&t?
Cheers & thanks!
A lot of AT&T systems used a CDC Keystone drive, if you are
talking about 1/2" tape reels.
The Laser Magnetic Storage 92181 is an 800/1600 streaming
drive, the 92185 is a 1600/6250
drive. These could be had with formatted Pertec Interface
or SCSI. There were lots of these
drives made.
Jon
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