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+@c
+@c  COPYRIGHT (c) 1988-1997.
+@c  On-Line Applications Research Corporation (OAR).
+@c  All rights reserved.
+@c
+
+@ifinfo
+@node Preface, CPU Model Dependent Features, Top, Top
+@end ifinfo
+@unnumbered Preface
+
+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:
+
+@itemize @bullet
+@item @cite{PA-RISC 1.1 Architecture and Instruction Set Reference
+Manual, Third Edition.  HP Part Number 09740-90039}.
+@end itemize
+
+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.
+