Page of GC20-1807-7 As Updated April 1, 1981 by TNL GN25-0829 IBM 3800 Pri nting Subsystem
The IBM 3800 printinq Subsystem is a high-speed, nonimpact printer that
combines electrophotographic and laser technology. The 3800 printer can
achieve speeds of up to 20,040 lines/minute, while several unique
features give the user the ability to control the characteristics of
printed output.
The features of the 3800 printer include: Forms control buffer -controls the amount of vertical space between
printed lines. The user can specify vertical spacing of 6, 8, or 12
lines/inch. Multiple copy printing -allows the user to request multiple copies
without the use of carbon paper. The 3800 uses its hiqh speed to
repeat-print the specified number of oriqinals. Copy modification -allows the user to print or suppress predefined
information on specified copies of a page. For example, a different
name and address can be printed on each copy of a page. Forms overlay -allows
printed (flashed) from
inside the form.
the user to specify a forA or grid to be
a negative while output is being printed Character arranqement tables -allow the user to specify
predefined character set will be used to print a data set.
character set contains up to 64 printable characters.
Each Character modification -allows character sets to be modified or
extended to meet the user's needs.
For detailed information on the 3800 printinq Subsystem see: lng printing !!§ Qi lh§ 180Q printing ££inling fQ£ the 180Q R£inting VM/370 supports the 3800 printer both as a dedicated device and as a
real spoolinq device.
Using the 3800 Printer as a Dedicated Device VM/370 allows a virtual machine that is configured to support a real 3800 to attach the 3800 for that machine's exclusive use. When used as
a dedicated device, VM/370 supports all of the facilities of the 3800. 226 System Guide
Page of GC20-1807-7 As Updated April 1, 1981 by TNL GN25-0829 Using the 3800 Printer as a Real Spooling Device VM/370 allows users of spool files to print their files on an IBM 3800 printing Subsystem. The copy modification, forms overlay, character
modification, and multiple copy features are fully supported. However,
when the 3800 is used as a real spooling device, only one character
arrangement table may be specified for each spool file. In addition,
the entire spool file must be printed with the same line spacing on each
page. Parameters on five commands enable the user to take advantage of the 3800 printer's capabilities. The CHANGE, SPOOL, and START commands
allow the user to specify the character arrangement table, copy
modifications, forms overlay, and FCB to be used for printing. The BACKSPAC and QUERY commands also support the 3800 Two utilities, GENIMAGE and IMAGELIB, construct and modify the
character arrangement tables, graphic modifications, copy modifications,
and FCBs used by the 3800. DIAGNOSE Code X'74' is invoked by IMAGELIB
to load and save this control information as a named system.
Finally, the NAME3800 macro instruction allows the user to create the
named system that contains the control information needed to print a
spool file. SPECIFYING PRINTER OPTIONS Five parameters on the SPOOL and CHANGE commands support the 3800 printer as a real spooling device. (See CP ggfgr§Q£g General for detailed coding information.) FLASH - identifies the form overlay, if any, to be used when printing
the file CHARS - names the character arrangement table to be used to print the
file MODIFY - indicates the copy modification module, if any, to be used
when printing the file FCB -specifies the name of the forms control buffer to be used for
the file COpy - indicates the number of copies to be printed
The START command includes parameters that enable the VM/370 operator
to name the character arrangement table and FCB to be used for the
separator page. The operator can also identify the forms overlay
currently loaded in the 3800 via the FLASH operand of the START command.
In addition, the operator uses the IMAGE parameter to specify the named
system to be used to print the spool file. Finally, by specifying the PURGE parameter, the operator can purge all spool files that cause errors when loaded into the 3800. See Operator's Guide-for
further information on the START command. ------ ---------- ----- CR EATl tr.; CONTROL TABL ES VM/370 the as/vs utility IEBIMAGE to create and dynamically modify
character arrangement tables, copy modifications, graphic modifications,
and FCBs. Two service programs, GENIMAGE and IMAGELIB, interface with
IEBIMAGE. Part 2. Control Program (CP) 227
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