tp \- DEC/mag tape formats
dumps files to and extracts files from
The formats of these tapes are the same except
that magtapes have larger directories.
copy of a stand-alone bootstrap program.
for DECtape (1 through 62 for magtape)
contain a directory of the tape.
There are 192 (resp. 496) entries in the directory;
Each entry has the following format:
The path name entry is the path name of the
file when put on the tape.
If the pathname starts with a zero word,
It is at most 32 bytes long and ends in a null byte.
Mode, uid, gid, size and time modified
are the same as described under i-nodes
The tape address is the tape block number of the start of
the contents of the file.
starts on a block boundary.
The file occupies (size+511)/512 blocks
The checksum entry has a value such that
the sum of the 32 words of the directory entry is zero.
Blocks above 25 (resp. 63) are available for file storage.