TM(4)                  OpenBSD Programmer's Manual (VAX)                 TM(4)

NAME
     tm - TM-11/ TE-10 magtape device interface

SYNOPSIS
     controller tm0 at uba? csr 0172520 vector tmintr tape te0 at tm0 drive 0

DESCRIPTION
     The TM-11/ TE-10 combination provides a standard tape drive interface as
     described in mtio(4). Hardware implementing this on the VAX is typified
     by the Emulex TC-11 controller operating with a Kennedy model 9300 tape
     transport, providing 800 and 1600 BPI operation at 125 IPS.

DIAGNOSTICS
     te%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.

     te%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.

     te%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.

     te%d: hard error bn%d er=%b.  A tape error occurred at block bn; the tm
     error register is 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 er-
     ror.

     te%d: lost interrupt.  A tape operation did not complete within a reason-
     able time, most likely because the tape was taken off-line during rewind
     or lost vacuum.  The controller should, but does not, give an interrupt
     in these cases.  The device will be made available again after this mes-
     sage, but any current open reference to the device will return an error
     as the operation in progress aborts.

SEE ALSO
     mt(1), tar(1), tp(1), ht(4), mt(4), mtio(4), ts(4), ut(4)

HISTORY
     A tm driver appeared in Version 6 AT&T UNIX.

BUGS
     May hang if a physical (non-data) error occurs.

OpenBSD 2.9                     March 27, 1991                               1
