Document purpose

The PXROS-HR Differential Handbook provides the user with the main differences in the ARM implementation of PXROS-HR operating system as compared to that of the TriCore implementation. It is tailored for users with experience with TriCore implementation, who are moving to the ARM architecture. The main focus is on the differences in the memory management due to ARM Memory Protection Unit requirements, changes in APIs and differences in ARM execution modes and interrupt handling.