Preface
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The Real Time Executive for Multiprocessor Systems (RTEMS) is designed to be portable across multiple processor architectures.  However, the nature of real-time systems makes it essential that the application designer understand certain processor dependent implementation details.  These processor dependencies include calling convention, board support package issues, interrupt processing, exact RTEMS memory requirements, performance data, header files, and the assembly language interface to the executive.

For information on the PA-RISC V1.1 architecture in general, refer to the following documents:

  * PA-RISC 1.1 Architecture and Instruction Set Reference Manual, Third Edition.  HP Part Number 09740-90039.

It is highly recommended that the PA-RISC RTEMS application developer also obtain and become familiar with the Technical Reference Manual for the particular implementation of the PA-RISC being used.