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tu(4)									 tu(4)

Name
       tu - TM03/TE16/TU45/TU77 magnetic tape interface

Syntax
       master ht0 at mba? drive ?
       tape tu0 at ht0 slave 0

Description
       Prior to Version 2.0, this device was referenced by

       The  TM03/transport  combination	 provides a standard tape drive inter‐
       face, as described in All drives provide both 800 and  1600  bpi.   The
       TE16  runs  at 45 ips, the TU45 at 75 ips, and the TU77 runs at 125 ips
       and autoloads tapes.

Diagnostics
       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 on line
       An attempt was made to access the tape while it	was  off  line.	  This
       message	is written on the terminal of the user who tried to access the
       tape.

       tu%d: can't switch 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
       A tape error occurred at block bn.  Any error is fatal on nonraw	 tape.
       When  possible,	the  driver will have retried the operation and failed
       several times before reporting the error.  Additional register informa‐
       tion    can   be	  gathered   from   the	  system   error   log	 file,
       /usr/adm/syserr/syserr.<hostname>.

Files
See Also
       mtio(4), nbuf(4), MAKEDEV(8), uerf(8)

				      VAX				 tu(4)

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