Xerox DocuPrint 180 Product Manual page 51

XEROX DOCUPRINT 180 LPS SOFTWARE COMPONENTS
Figure 4-1. Major DocuPrint 180 LPS PROCESSING TASKS
Operating System Executive (OSEXEC)
File Control Program (FCP)
Operator Communication Subsystem (OSC))
Utilities Input
Editor FDL Processor
DJD RPT
Diagnostics Font Editor
PDL Processor Output
Host Interface Processor (HIP)
Operating system executive task The OSEXEC task is always running. It interfaces with the DocuPrint
180 LPS hardware and logs hardware errors. In addition, it queues
devices, manages resources, establishes priority for software tasks,
and schedules processing.
File control program The FCP or FMS task manages disk resources. It manages and
allocates all disk space, creates all disk files, and accesses disk files.
Operator communication subsystem The OCS task acts as an interface between the operator and
software tasks by receiving input from and displaying messages to
the operator. OCS also interfaces between system tasks.
Diagnostic tasks The OSDS runs either under the OSEXEC task or from offline
sources. It controls the processing for the PROBLEM command.
Diagnostic support is also provided to your service technician by the
stand-alone field engineering software (SAFES) task.
System utilities The DocuPrint 180 LPS has many utility programs which run under
the OSEXEC task that provide maintenance services such as:
backing up the system (DSR); tracking the unusable sectors on disks
(FCHECK); assigning a maximum size to the working print file
(REALLOCATE); eliminating wasted space on the disks
(COMPRESS); and making used space available again (PURGE).
XEROX DOCUPRINT 180 LASER PRINTING SYSTEM PRODUCT GUIDE 4-3