5 Mar
2021
5 Mar
'21
7:45 a.m.
On Fri, Mar 5, 2021 at 4:55 AM Lars Brinkhoff via cctalk <
cctalk at classiccmp.org> wrote:
Hello,
Someone sent me these magtape images from Tymshare and said "they fell
off the back of a truck on route 62 in Hudson, MASS." I don't know
their provenance.
Sorry, I don't have any good hosting. For now they are here:
https://gitlab.com/larsbrinkhoff/tymshare
The download.sh script will retrieve individual files one by one rather
than cloning the repository; next use cat.sh to get the .tape.bz2 files.
The tape format is close to not not quite FAILSAFE. With help from Joe
Smith, I made a tool to extract the files:
https://github.com/larsbrinkhoff/pdp10-its-disassembler/blob/master/tito.c
I'm not having any luck with either back10 or tito.
$ sha1sum 169249.tape
1230fb20086990a1ff777fce32591f2900425694 169249.tape (So that's good)
$ ./tito -x -f 169249.tape
fopen: Is a directory
$ bin/back10 -l -f 169249.tape | head
18-Nov-1858 00:00:00 <754> dsk:[1,1][3,700202].ufd
18-Nov-1858 00:00:00 <754> dsk:[1,1][3,700004].ufd
18-Nov-1858 00:00:00 <754> dsk:[1,1][3,700220].ufd
$ bin/back10 -x -f 169249.tape
...
that gets lots of files with names like 'dsk:[1,4]specdf525].mic'
That just seems wrong.