1 .\" $NetBSD: ch.4,v 1.2 1999/03/16 01:19:15 garbled Exp $
8 .Nd SCSI media changer driver
10 .Cd "ch* at scsibus? target ? lun ?"
14 driver is essentially an
16 interface to a robot on a
18 bus - a device that will change media (e.g. tapes, CD-ROMs, etc)
19 in and out of drives for that media.
22 utility program uses this interface to manipulate such robots.
24 .Bl -tag -width /dev/rsdXXXXX -compact
25 .It Pa /dev/ch Ns Ar u
27 bus media changer unit
30 .Pa /usr/include/sys/chio.h
33 .It "ch%d: waiting %d seconds for changer to settle..."
34 Some changers require a long time to settle out,
35 to do tape inventory, for instance.
37 The changer is not responding.
38 .It "ch%d: warning, READ ELEMENT STATUS avail != count"
39 .It "ch%d: could not sense element address page"
40 .It "ch%d: could not sense capabilities page"