1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)ht.4 8.1 (Berkeley) 06/05/93 7.\" 8.Dd 9.Dt HT 4 vax 10.Os BSD 4 11.Sh NAME 12.Nm ht 13.Nd 14.Tn TM-03 Ns / Tn TE-16 , 15.Tn TU-45 , 16.Tn TU-77 17.Tn MASSBUS 18magtape device interface: 19.Sh SYNOPSIS 20.Cd "master ht0 at mba? drive ?" 21.Cd "tape tu0 at ht0 slave 0" 22.Sh DESCRIPTION 23The 24.Tn TM-03 25transport combination provides a standard tape drive 26interface as described in 27.Xr mtio 4 . 28All drives provide both 800 and 1600 29.Tn BPI ; 30the 31.Tn TE-16 32runs at 45 33.Tn IPS , 34the 35.Tn TU-45 36at 75 37.Tn IPS , 38while the 39.Tn TU-77 40runs at 125 41.Tn IPS 42and autoloads tapes. 43.Sh DIAGNOSTICS 44.Bl -diag 45.It tu%d: no write ring. 46An attempt was made to write on the tape drive 47when no write ring was present; this message is written on the terminal of 48the user who tried to access the tape. 49.Pp 50.It tu%d: not online. 51An attempt was made to access the tape while it 52was offline; this message is written on the terminal of the user 53who tried to access the tape. 54.Pp 55.It tu%d: can't change density in mid-tape. 56An attempt was made to write 57on a tape at a different density than is already recorded on the tape. 58This message is written on the terminal of the user who tried to switch 59the density. 60.Pp 61.It "tu%d: hard error bn%d mbsr=%b er=%b ds=%b." 62A tape error occurred 63at block 64.Em bn ; 65the ht error register and drive status register are 66printed in octal with the bits symbolically decoded. Any error is 67fatal on non-raw tape; when possible the driver will have retried 68the operation which failed several times before reporting the error. 69.El 70.Sh SEE ALSO 71.Xr mt 1 , 72.Xr tar 1 , 73.Xr tp 1 , 74.Xr mtio 4 , 75.Xr mt 4 , 76.Xr physio 4 , 77.Xr tm 4 , 78.Xr ts 4 , 79.Xr ut 4 80.Sh HISTORY 81An 82.Nm 83driver appeared in 84.At v6 . 85.Sh BUGS 86May hang if physical (non-data) errors occur. 87