Copyright (c) 1980 Regents of the University of California.
All rights reserved. The Berkeley software License Agreement
specifies the terms and conditions for redistribution.

@(#)ht.4 6.2 (Berkeley) 06/01/86

C 4 ht - TM-03/TE-16,TU-45,TU-77 MASSBUS magtape interface "master ht0 at mba? drive ?"

"tape tu0 at ht0 slave 0"

The tm-03/transport combination provides a standard tape drive interface as described in mtio (4). All drives provide both 800 and 1600 bpi; the TE-16 runs at 45 ips, the TU-45 at 75 ips, while the TU-77 runs at 125 ips and autoloads tapes. mt(1), tar(1), tp(1), mtio(4), tm(4), ts(4), mt(4), ut(4) tu%d: no write ring. An attempt was made to write on the tape drive when no write ring was present; this message is written on the terminal of the user who tried to access the tape.

tu%d: not online. An attempt was made to access the tape while it was offline; this message is written on the terminal of the user who tried to access the tape.

tu%d: can't change density in mid-tape. An attempt was made to write on a tape at a different density than is already recorded on the tape. This message is written on the terminal of the user who tried to switch the density.

tu%d: hard error bn%d mbsr=%b er=%b ds=%b. A tape error occurred at block bn; the ht error register and drive status register are printed in octal with the bits symbolically decoded. Any error is fatal on non-raw tape; when possible the driver will have retried the operation which failed several times before reporting the error.

If any non-data error is encountered on non-raw tape, it refuses to do anything more until closed.