stored in the
All the options of
DCB, and merges necessary fields of the DCB and
except for the
device type is disk, the file is closed. If the
device type is tape, the
instruction. In supporting this macro instruction.
same class. For example, all printers are grouped
into the printer class, all tape drives into the
Thus, all devices in a particular class appear to be
the same device type.
The device type characteristics
All options of
options concerned with multiple console support.
for a reply, moves the reply to the specified area.
sets a completion bit in the specified
returns. There is no check made to determine if the
operator provides a reply that is too long. The reply
length parameter of the
specifies the maximum length of the reply. The
user-provided answer area is set to zeros and control
is returned to the user with a return code of