Beginning with OS/400 V3R1 the Advanced Function Printing* (AFP*) subsystem is a separately orderable feature of OS/400 called Print Services Facility/400* (PSF/400*).
There are two separate subsystems in the OS/400 operating system. The original OS/400 printing subsystem continues to support line printers and a subset of IBM IPDS printers and print functions. Full support for all IPDS printers is provided by the integrated AFP printing subsystem. The printing subsystem used to process application output is determined by the device description of the target printer. Only printers defined as DEVTYPE(*IPDS) and AFP(*YES) (both specified in the printer device description) are controlled by the AFP printing subsystem.
In order to print based upon the values specified for certain keywords, PSF/400 is required. For example, spooled files generated with DEVTYPE(*APFDS) can only be printed by PSF/400.
Keywords impacted by installation of PSF/400 are:
See the Printer Device Programming book, for more information on PSF/400.
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