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CHANS is a program which dynamically gives system configuration
and status information on mass storage devices (i.e. TAPES and
Information includes location of device data blocks (see Monitor
Tables), structure names and device types.
In order to use this program, a user must have enabled WHEEL or
OPERATOR capabilities. Once this condition is satisfied, simply run
the program and select one of the options. To exit, type "E".
The device data blocks and bit definitions are outlined in detail
in the appropriate Monitor Tables. For convenience, some definitions
are given here.
CDB Channel Data Block. This is a data block
for each RH20.
KDB Kontroller Data Block. This is a data block
pointed to by a CDB and it in turn points to
the UDBs for tape drives. There can be a
maximum of 8 UDBs (16 for 2060) for each KDB.
UDB Unit Data Block. The data block for a tape or
disk unit. If it refers to tape unit it will
be pointed to by a KDB else it will be pointed
to by a CDB.
The OPTIONS which can be selected are:
U UDB - Disks and Tapes
D UDB - Disks
T UDB - Tapes
C CDB - RH20
K KDB - TM02/03/DX20
V Dynamic display of all of the above
<ret> Static display of all of the above
[End of CHANS.HLP]