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BASIC CONCEPTS
2-2 XEROX DOCUPRINT 180 LASER PRINTING SYSTEM PRODUCT GUIDE
System controller
The system controller contains the input subsystem and the control
subsystem electronics.
The input subsystem provides interfacing capability (online, offline,
and Dynamic Document Interface (for DEC, PC, MAC, and UNIX
LAN connectivity) for a variety of input sources (host, magnetic tape,
workstations, and graphic scanners).
Note: Your quarter-inch cartridge tape and floppy disk drives are
not input sources for print jobs (refer to“Xerox DocuPrint 180 LPS
hardware components”).
The control subsystem performs all data handling, formatting,
buffering, and operational control of the system. It also provides
operator control through the DocuPrint 180 LPS PC User Interface
(UI). Refer to the “Xerox DocuPrint 180 LPS hardware components”
chapter for more information on system controller components and
these subsystems.
DocuPrint 180 LPS interface
The following DocuPrint 180 LPS interfaces are available to connect
a variety of input sources to the DocuPrint 180 LPS:
Offline interface The offline interface permits input from a computer-prepared
magnetic tape which is loaded onto the magnetic tape drive. The 9-
track and 18/36-track magnetic tape drives are the optional offline
interfaces available for the Xerox DocuPrint 180 LPS. Refer to the
“Xerox DocuPrint 180 LPS hardware components” chapter for more
information.
Online interface The online interface permits input from a channel-attached host
computer.
DDI interface The Dynamic Document Interface (DDI) enables communication
between a Xerox DocuPrint 180 LPS and network via a shared disk
mechanism over a SCSI bus. Refer to the Xerox Dynamic Document
Interface Operator Guide for information regarding the DDI.
DocuPrint 180 LPS system disk storage and memory
The system disks store the operating system software (OSS) as well
as the system resources (fonts, forms, and graphics) that are to be
loaded into memory for use during input processing. Refer to the
“DocuPrint 180 LPS software components” chapter for more
information on OSS.