1*61600Sbostic.\" Copyright (c) 1983, 1991, 1993 2*61600Sbostic.\" The Regents of the University of California. All rights reserved. 320748Smckusick.\" 447674Scael.\" %sccs.include.redist.man% 520748Smckusick.\" 6*61600Sbostic.\" @(#)ut.4 8.1 (Berkeley) 06/05/93 747674Scael.\" 847674Scael.Dd 947674Scael.Dt UT 4 vax 1047674Scael.Os BSD 4.2 1147674Scael.Sh NAME 1247674Scael.Nm ut 1347674Scael.Nd 1447674Scael.Tn UNIBUS TU45 1547674Scaeltri-density tape drive interface 1647674Scael.Sh SYNOPSIS 1747674Scael.Cd "controller ut0 at uba0 csr 0172440 vector utintr" 1847674Scael.Cd "tape tj0 at ut0 drive 0" 1947674Scael.Sh DESCRIPTION 2020748SmckusickThe 2147674Scael.Nm ut 2220748Smckusickinterface provides access to a standard tape drive interface as 2320748Smckusickdescribe in 2447674Scael.Xr mtio 4 . 2547674ScaelHardware implementing this on the 2647674Scael.Tn VAX 2747674Scaelis typified by the System 2847674ScaelIndustries 2947674Scael.Tn SI 3047674Scael9700 tape subsystem. Tapes may be read or written 3147674Scaelat 800, 1600, and 6250 3247674Scael.Tn BPI . 3347674Scael.Sh DIAGNOSTICS 3447674Scael.Bl -diag 3547674Scael.It tj%d: no write ring. 3620748SmckusickAn attempt was made to write on the tape drive 3720748Smckusickwhen no write ring was present; this message is written on the terminal of 3820748Smckusickthe user who tried to access the tape. 3947674Scael.Pp 4047674Scael.It tj%d: not online. 4120748SmckusickAn attempt was made to access the tape while it 4220748Smckusickwas offline; this message is written on the terminal of the user 4320748Smckusickwho tried to access the tape. 4447674Scael.Pp 4547674Scael.It tj%d: can't change density in mid-tape. 4620748SmckusickAn attempt was made to write 4720748Smckusickon a tape at a different density than is already recorded on the tape. 4820748SmckusickThis message is written on the terminal of the user who tried to switch 4920748Smckusickthe density. 5047674Scael.Pp 5147674Scael.It "ut%d: soft error bn%d cs1=%b er=%b cs2=%b ds=%b." 5220748SmckusickThe formatter indicated a corrected error at a density other 5320748Smckusickthan 800bpi. The data transferred is assumed to be correct. 5447674Scael.Pp 5547674Scael.It "ut%d: hard error bn%d cs1=%b er=%b cs2=%b ds=%b." 5620748SmckusickA tape error occurred 5720748Smckusickat block 5847674Scael.Pp 5947674Scael.It bn. 6020748SmckusickAny error is 6120748Smckusickfatal on non-raw tape; when possible the driver will have retried 6220748Smckusickthe operation which failed several times before reporting the error. 6347674Scael.Pp 6447674Scael.It tj%d: lost interrupt. 6520748SmckusickA tape operation did not complete 6620748Smckusickwithin a reasonable time, most likely because the tape was taken 6720748Smckusickoff-line during rewind or lost vacuum. The controller should, but does not, 6820748Smckusickgive an interrupt in these cases. The device will be made available 6920748Smckusickagain after this message, but any current open reference to the device 7020748Smckusickwill return an error as the operation in progress aborts. 7147674Scael.El 7247674Scael.Sh SEE ALSO 7347674Scael.Xr mt 1 , 7447674Scael.Xr mtio 4 7547674Scael.Sh HISTORY 7647674ScaelThe 7747674Scael.Nm 7847674Scaeldriver appeared in 7947674Scael.Bx 4.2 . 8047674Scael.Sh BUGS 8147674ScaelMay hang if a physical error (non-data) occurs. 82