Specifications

40 IBM System z Personal Development Tool: Volume 3 Additional Topics
SYSPARM 00
IEASYM 00
NUCLST 00
PARMLIB USER.PARMLIB Z9SYS1
PARMLIB ADCD.Z112.PARMLIB Z9RES1
PARMLIB SYS1.PARMLIB Z9RES1
NUCLEUS 1
SYSPLEX ADCDPL
Change the 99 in the first line to 77 (or whatever number you used for your IODF). The format
of this statement is odd, but it results in the name SYS1.IODF77. Be certain to place your
changed characters in the same columns as the original characters. Do not change anything
else in the LOADxx member unless you are certain about your actions.
The new IODF is now ready to use the next time you IPL z/OS with the parameter:
$ ipl 0a80 0a82xx
Assuming you are satisfied with the results, you will probably want to change all the LOADxx
members that you use. You must also change your devmap to use the new devices you added
to your z/OS system.
(Note: At the time of writing, we have no information about the use of OSAD in the zPDT
environment.)
3.10 Local printing
There is often less need for hard copy printed output in today’s working environments, but it is
sometimes needed. There are a variety of ways to approach this. The following material
describes only one of these ways. This discussion assumes you are using a recent version of
the AD-CD z/OS system.
Background
Basic z/OS printing is closely related to the hardware available on the original S/360
machines. The most common printer at that time was the IBM 1403. It printed lines with 120
characters (or 132 characters, with an optional feature) and was normally set to print 6 lines
per inch on fan-fold paper that was 11 inches long. This meant a full page held 66 lines. In
practice, many programs counted output lines and skipped to a new page after 60 or 61 lines.
Much of the utility software with the system, such as JCL processors, assemblers, compilers,
system report programs, and so forth were designed to fit these pages. That is, they printed
lines of up to 120 characters (sometimes up to 132 characters) with about 60 lines per page.
This default convention is still with us today.
Later hardware replaced the line printers (such as the 1403) with laser printers. These were
devices such as the IBM 3800, 3820, 3825, 3900, and so forth. These could accept a variety
of paper sizes, but were most commonly used with “letter size” paper.
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With proper
programming, these printers can produce sophisticated output using many fonts and graphics
components. However, the system utilities (compilers, for example) continued to produce
listings in “1403 format.” Software for these laser printers can accept this 1403-format data
and list it. These listings typically are two-sided, landscape mode, and contain up to 66 lines
of 132 characters on each page.
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The “letter size” (or A4 elsewhere) paper could be cut sheets or fanfold paper, depending on exactly which printer is
being used.