Requirements for TPs in Problem-Program State
The following requirements apply to TPs that are written to run in problem-program
state:
- APPC/MVS services must be invoked in 31-bit addressing mode
- All parameters of APPC/MVS services must be addressable by the caller and in the primary address space.
If you are writing a TP to run in problem program state, you can skip over General Requirements and continue reading at Calling CPI Communications Routines.