Your Command Processor can invoke the Parse Service Routine by using either the CALLTSSR or LINK macro instructions, specifying IKJPARS as the entry point name. However, you must first create the parse parameter list (PPL) and place its address into register 1. This PPL must remain intact until the Parse Service Routine returns control to the calling routine. The PPL is described in The parse parameter list.

The Parse Service Routine can be invoked in either 24- or 31-bit addressing mode. IKJPARS accepts input above or below 16 MB in virtual storage. The caller's parameters must be in the primary address space.

Figure 1 shows the flow of control between a Command Processor and the Parse Service Routine.