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Input Processing
Input source
Data to be processed by the printing system may originate from several sources. These
sources are magnetic tape (offline processing), a host computer (online processing in 3211
and 4245 modes) and harddisks (import over the network via ftp).
Channel-attachment
An electronic printing system equipped with the online interface unit (OLI) may be attached
to a byte multiplexer, block multiplexer, or selector channel of an IBM 370, system 300 or
4300 series, and 9370 models, or of an IBM system 390 ES/9000. The channel-attached
system operates in one-byte, six-byte, eight-byte, or burst mode. No programming changes
to the IBM operating system software are required, provided that an IBM 3211 printer and
3811 printer Control Unit is already supported on the host system.
A channel-attached LCDS-Module can receive input from the host computer in online 3211
mode. In online 3211 mode, the data stream emulates IBM 3211 line printer format, with or
without embedded DJDEs.
Online 3211/6262 mode
Basic input processing functions are augmented by the following functions for online 3211
or 4245 mode operations:
•
Handling of all interactions with the online interface (OLI) hardware.
•
Building of translation tables based on the present contents of the universal character
set buffer (UCSB) and the current FOLD or UNFOLD command in effect.
Online-specific commands
This section explains how to create a JDE or JDL, DJDE processing, online optimization
and copy-sensitive copy modification entries (CME).
Creating a JDE or JDL
An online job descriptor library (JDL) and its job descriptor entries (JDEs) are created by
the user according to the same rules and syntax as other entries. The one PDL command
that must be specified for normal online processing is VOLUME HOST=IBMONL.
The HOST parameter of the VOLUME command performs two functions:
•
Allows the electronic printing system to accept data from the online channel.
•
Allows PDL to use a different set of defaults for the RECORD and LINE commands.
A29247-X4-X-8-7672
Summary of VOLUME Command Parameters
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