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The purpose of this manual is to provide a roadmap to those people porting RTEMS to a new CPU family. This process includes a variety of activities including the following:

  • targeting the GNU development tools
  • porting the RTEMS executive code
  • developing a Board Support Package
  • writing an RTEMS CPU Supplement manual for the completed port.

This document focuses on the process of actually porting the RTEMS executive code proper. Each of the data structures, routines, and macro definitions required of a port of RTEMS is described in this document.

Porting any operating system, including RTEMS, requires knowledge of the operating system, target CPU architecture, and debug environment. It is very desirable to have a CPU simulator or hardware emulator when debugging the port. This manual assumes that the user is familiar with building and using RTEMS, the C programming language, and the target CPU architecture. It is desirable to be familiar with the assembly language for the target CPU family but since only a limited amount of assembly is required to port RTEMS.

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