13.3.2 Task priority information
The number of task priority information items that can be specified is defined as being within the range of 0 to 1.
Specifies the priority range of a task (maximum value of Initial priority: itskpri, or maximum value of priority specified when issuing chg_pri).
A value between 1 and 15 can be specified for maxtpri.
A value between 1 and 15 can be specified for maxtpri.