paging device. After it has been filled with data from the virtual
.achine or a real input reader, it is written to a page of secondary
DASD storage. The allocation of pages on the spooling disk(s) is
storage and semipermanent spool file residence.
separate allocation block chains for virtual storage and spooling pages.
Each block contains control information and a bit map that allocates
pages on a single cylinder. If none of the cylinders allocated have any
available pages,
ti.es on a given device, cylinders are allocated as close to the
relative center of the spooling or paging area as possible.
is controlled
virtual machine, and (2) to read and write the spool files associated
with those devices. The following virtual devices are supported for
spooling, with the exceptions noted:
binary
features).
The following consoles are supported for spooling when entered into
the directory as the virtual system console:
All virtual printers
data checks, etc.) are ignored. It is up to the user and the
installation to ensure that the output is directed to the proper real
printer via use of the output CLASS feature described below. For the
3211 or
CP Introduction 1-139