11/3/71 DTF (I)
NAME dtf -- DECtape format
SYNOPSIS /etc/dtf
DESCRIPTION dtf will write timing tracks, mark tracks and
block numbers on a virgin DECtape. The format is
DEC standard of 578 blocks of 256 words each.
The end zones are a little longer than standard
DEC.
Before use, the tape to be formatted should be
mounted on drive 0. The 'wall' and 'wtm'
switches should be enabled. After the tape is
formatted, the switches should be disabled to
prevent damage to subsequent tapes due to a con-
troller logic error.
FILES --
SEE ALSO sdate
DIAGNOSTICS "?" is typed for any error detected.
BUGS This program does physical I/O on drive 0. The
processor priority is set very high due to very
stringent real time requirements. This means
that all time sharing activities are suspended
during the formatting (about 1.5 minutes) The
real time clock will also be slow.
OWNER ken