🚀 go-pugleaf

> I am looking for a way to convert a 150 QIC archive, made on a
> CTOS SG5000 machine, to a UNIX readeble format.
> It's possible to read the tape with te 'dd' command.
> But the archive has a certain internal structure, it appears that
> it's build on blocks of 64 K with some control delimiters and within
> blocks you see a sort of 'tar' format.
>  Question: has someone out there a program that can read such a archiv
>            or is there a C-structure which gives me the layout of the
>            archive so that I can make a program on myself.
Probably the best way to create a tar or cpio tape that a Unix system
can read from an SG5000 is to restore the tape back to the SG5000
disk and use the POSIX.1 and POSIX.2 shell and utilities which
support the "pax" utility to create a new tape. "pax" is a POSIX
utility which inputs/outputs either in tar or cpio format. The old
CTOS Developers Toolkit which had a form of cpio is no longer
available or supported.

The CTOS format for archive has changed from std sw 11.x through 12.0
and 12.1 so it is not easy to copy the tape. But an engineer in the
Unisys McLean VA office  as written a program to copy the tape and
may be willing to "share" the code if asked. Contact Unisys VAM support
and ask for the McLean VA office.

This is the personal opinion of the sender and does not reflect an
official Unisys position.
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Joel Stern                           Protocol Products Group
Tredyffrin, Net2 385-3532            BTOS BNA, CP3680