From: wkt@tuhs.org (Warren Toomey)
Subject: [TUHS] 780 System III tape images
Date: Thu, 27 Sep 2007 12:24:14 +1000 [thread overview]
Message-ID: <20070927022414.GA6359@minnie.tuhs.org> (raw)
In-Reply-To: <46F87517.9060002@bitsavers.org>
On Mon, Sep 24, 2007 at 07:40:23PM -0700, Al Kossow wrote:
> I've placed two sets of 800bpi 780 System III tape images
> temporarily under http://bitsavers.org/sysIII
> Curiously, they don't match. There were no dates on the tapes
> which are originals.
I've found tapcat.pl and used it to extract the records from the four tapes.
Here's a quick table with truncated MD5s of the 7 records from tape 1 of each
set, and of the cpio archive which is on tape 2 of each set.
Tape Record What It Is Set 1 Set 2
---------------------------------------------------------
file0.dat boot record ce3dab ce3dab
file1.dat mini-root 693861 1b9183 different
file2.dat cpio binary 777632 777632
file3.cpio / 5b6ba5 5b6ba5
file4.cpio /usr/src/man 713ea0 713ea0
file5.cpio /usr/src/rje 8d146b 8d146b
file6.cpio /usr/src/graf 7e2afa 7e2afa
tape2.cpio /usr 51b5b1 a07403 different
tape2.cpio in set 2 seems to be slightly corrupt; cpio -ivt on the file
gives this warning:
-rw-rw-r-- 1 operator kmem 1052 Apr 12 1980 src/games/trk/win.c
-rw-rw-r-- 1 operator kmem 4147 Apr 12 1980 src/games/bj.s
cpio: warning: skipped 840 bytes of junk
-rw-rw-r-- 1 operator kmem 122 Apr 12 1980 src/games/us.s
-rw-rw-r-- 1 operator kmem 10036 Apr 12 1980 src/games/mail.c
Otherwise, the contents of the two tape2 files appears to be identical, i.e.
the cpio timestamps on all the files match up.
The two file1.dat records differ at position 721; I haven't attempted to
dig any further with these files yet.
Warren
next prev parent reply other threads:[~2007-09-27 2:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-25 2:40 Al Kossow
2007-09-27 2:24 ` Warren Toomey [this message]
[not found] <3368126406-2252@localhost>
2007-09-26 12:22 ` Andrew Warkentin
2007-09-26 23:42 ` Andrew Warkentin
2007-09-26 23:55 ` Al Kossow
2007-09-27 0:53 ` Warren Toomey
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20070927022414.GA6359@minnie.tuhs.org \
--to=wkt@tuhs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).