28 Oct
2000
28 Oct
'00
11:39 a.m.
To clarify a couple of points, see below...
At 06:46 PM 10/25/00 +0200, you wrote:
> Date: Wed, 25 Oct 2000 10:39:51 -0400
> From: Douglas Quebbeman <dhquebbeman(a)theestopinalgroup.com>
> Subject: RE: classiccmp-digest V1 #407
<snip>
Maybe in my next vacations. :->
No, seriously, maybe a goal that this tapes could be
translated to Pc Format like Paul Pierce made with
IBSYS and PR150, two OS's for the 709 (if I remember
good...).
IBSYS was for the 709/7090/7094. PR150 is not quite accurate. It
was IBM-1410-PR155, for the IBM 1410.
Paul also did recoveries on IBM 1410 diagnostics and IBM-1410-PR108,
another 1410 operating system, and some other tapes as well. (I went with
him to get the tape used in the recovery of the 1410 stuff. ;o)
What was special about what Paul did was that he recovered data from 7
track tapes, and from tapes that were not, at first blush, perfectly
readable. He actually did bit-cell level analysis of the data to recover
it. (To get IBM-1410-PR155 actually took two fortuitously identical copies
of the exact same information -- you talk about luck).
If the CTSS tapes are 7 track, then that is the kind of thing it might
take. But they might be 9 track, too. 9 track tape drives, are quite
common, and it could well be that that is the format of those tapes,
no? Some 9 track drives would actually be portable enough (at 100lbs) to
carry to the facility along with a PC with a SCSI controller to read the tapes.
(I'm a bit far away to do that. ;-) ).
<snip>
Well, that's all for now. Thanks for your kindly
answer,
Douglas. Greetings from Spain.
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Sergio Pedraja
Administracion de Sistemas
Division de Tecnologia
Caja Cantabria
Spain
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mailto: spedraja(a)mail.ono.es, spedraja(a)casyc.es
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---
Jay R. Jaeger The Computer Collection
cube1(a)home.com visit http://members.home.net/thecomputercollection