tm \*- TM-11/TU-10 magtape interface
refer to the DEC TU10/TM11 magtape.
When opened for reading or writing,
series of 512 byte records terminated by an
When the magtape is closed
an end-of-file is written.
The magtape can only be opened once at
or get other non-data errors it refuses to do anything more
There has to be some reasonable way to deal