Table of Contents
Advertisement
User Diskette Control
When the diskette drive requires operator attention, it is
indicated in line 21 of the machine status area either by
the legend DISK, or (if, at the same time, the system
diskette also requires attention) by SYSDSK.
When you then invoke the mode selection display onto the
screen and enter selector character
1
G
1
against
'Selection', the screen picture changes to the 'user
diskette control' display.
The 'user diskette control' display shows the status, and
allows for control, of the natively attached diskette
drive.
The DEVICE STATUS displayed may be:
READY/NOT READY
LOAD NEXT DISKETTE
DEFECTIVE DISKETTE
READY indicates that the diskette device can accept
commands from the source program. NOT READY indicates that
the device could not accept commands from the source
program at the time the command was given.
Note: The READY and NOT READY indications do not
immediately reflect any manual interference; they show the
state of the diskette
1/0
as it was when the device was
last addressed. For example, when the device is ready and
you remove the diskette, the status will still show READY
until the device is addressed. Only then will the
indication change to NOT READY.
LOAD NEXT DISKETTE indicates to the operator to load a new
diskette.
DEFECTIVE DISKETTE indicates that machine-internal error
recovery failed and that, to recover, the diskette has to
be replaced or the service representative to be called.
Information to be Specified by the Operator
In order to control the device, the following command codes
may be specified:
1
N
1
for START
1
S
1
for STOP
1
R
1
for RESET
The command specified is executed when the operator presses
the ENTER key.
START
When a diskette has been loaded on the drive, but the
Procedures
3-6 3
Advertisement
Table of Contents
