devices used while executing the
An
The format of the
type
r ,
r
,
type
volser
indicates that the device described is an input device.
indicates that the device described is an output device.
under
is the unit address of the device.
is the device type
7-track support for any
as a
specify
to compatibility mode).
Note: The
that the device type entered agree with the device type of the
real device as recognized by
with device types, the following message is issued:
uses
types agree. If the device types do not agree, error message
label verification is performed.