ut(4) - NetBSD Manual Pages

Command: Section: Arch: Collection:  
UT(4)                 NetBSD/vax Kernel Interfaces Manual                UT(4)


NAME
ut -- UNIBUS TU45 tri-density tape drive interface
SYNOPSIS
ut0 at uba0 csr 0172440 vector utintr tj0 at ut0 drive 0
DESCRIPTION
NOTE: This driver has not been ported from 4.4BSD yet. The ut interface provides access to a standard tape drive interface as describe in vax/mtio(4). Hardware implementing this on the VAX is typi- fied by the System Industries SI 9700 tape subsystem. Tapes may be read or written at 800, 1600, and 6250 BPI.
DIAGNOSTICS
tj%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. tj%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. tj%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. ut%d: soft error bn%d cs1=%b er=%b cs2=%b ds=%b. The formatter indicated a corrected error at a density other than 800bpi. The data transferred is assumed to be correct. ut%d: hard error bn%d cs1=%b er=%b cs2=%b ds=%b. A tape error occurred at block bn. 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. tj%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
vax/mt(1), vax/mtio(4)
HISTORY
The ut driver appeared in 4.2BSD.
BUGS
May hang if a physical error (non-data) occurs. NetBSD 9.0 February 17, 2017 NetBSD 9.0
Powered by man-cgi 1.15, Panagiotis Christias
Modified for NetBSD by Kimmo Suominen