Defining the advanced function printer (using the PRT(nnnn) statement)

JES2 supports Advanced Function Printing (AFP) printers (such as the3800 model 3 executing in full function mode) as local printers only. A 3800 model 3 running in compatibility mode is functionally equivalent to a 3800 model 1.

Specify a printer to operate under the control of a single functional subsystem by using the FSS= keyword on the JES2 PRT(nnnn) initialization statement. You must define each functional subsystem (and the printer(s) under its control) individually so you can access the functional subsystem applications (FSA) separately and use separate PROCLIB procedures for each functional subsystem (FSS). (See Defining a functional subsystem for advanced function Printing (using the FSS(accccccc) statement).)

You can start a 3800-3 printer running under the control of either JES2 or a functional subsystem. Other AFP printers must be run under the control of an FSS. To do this, set the MODE= keyword on the PRT(nnnn) initialization statement to either JES or FSS as appropriate.

The following affects how JES2 sets the MODE= parameter. Note that all parameters referred to belong to the PRT(nnnn) initialization statement.

If you specify MODE=JES, MODE is set to JES unless you also specify an FSS procedure name (FSS=fssname) and the unit address (UNIT=) of an AFP1 unit control block (UCB). Then MODE=FSS.
If you specify MODE=FSS, MODE is set to FSS unless you fail to specify an FSS.
If you do not specify the MODE= parameter:
- MODE= defaults to JES if you do not define an FSS procedure name.
- MODE= defaults to JES if you define an FSS procedure name and a unit address that does not point to an AFP1 UCB.
- MODE= defaults to FSS if you define an FSS without specifying the a unit address.
- MODE= defaults to FSS if you define an FSS and the unit address of an AFP1 UCB device.

Note: If you do not specify the UNIT= parameter for a MODE=JES printer, you must use the $T PRT(nnnn) command to specify a unit address (UNIT=) before you can start the printer through a $S PRT(nnnn) command.

Specify a procedure in one of the started task procedure libraries on SYS1.PROCLIB through the PROC= keyword on the FSS(accccccc) initialization statement. This procedure must contain the JCL needed to start the functional subsystem. JES2 starts the indicated functional subsystem with a name of procname.fssname (where the fssname is the subscript on the FSS(accccccc) statement).

As system requirements change, you can use the $T PRTnnnn command to alter the initial setting of the printer. Some cases require you to drain the functional subsystem before issuing the $T command; other cases do not. This requirement is printer-specific.