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+@c
+@c  COPYRIGHT (c) 1988-1997.
+@c  On-Line Applications Research Corporation (OAR).
+@c  All rights reserved.
+@c
+
+@ifinfo
+@node Default Fatal Error Processing, Default Fatal Error Processing Introduction, Interrupt Processing Disabling of Interrupts by RTEMS, Top
+@end ifinfo
+@chapter Default Fatal Error Processing
+@ifinfo
+@menu
+* Default Fatal Error Processing Introduction::
+* Default Fatal Error Processing Default Fatal Error Handler Operations::
+@end menu
+@end ifinfo
+
+@ifinfo
+@node Default Fatal Error Processing Introduction, Default Fatal Error Processing Default Fatal Error Handler Operations, Default Fatal Error Processing, Default Fatal Error Processing
+@end ifinfo
+@section Introduction
+
+Upon detection of a fatal error by either the
+application or RTEMS the fatal error manager is invoked.  The
+fatal error manager will invoke a user-supplied fatal error
+handler.  If no user-supplied handler is configured,  the RTEMS
+provided default fatal error handler is invoked.  If the
+user-supplied fatal error handler returns to the executive the
+default fatal error handler is then invoked.  This chapter
+describes the precise operations of the default fatal error
+handler.
+
+@ifinfo
+@node Default Fatal Error Processing Default Fatal Error Handler Operations, Board Support Packages, Default Fatal Error Processing Introduction, Default Fatal Error Processing
+@end ifinfo
+@section Default Fatal Error Handler Operations
+
+The default fatal error handler which is invoked by
+the fatal_error_occurred directive when there is no user handler
+configured or the user handler returns control to RTEMS.  The
+default fatal error handler disables processor interrupts (i.e.
+sets the I bit in the PSW register to 0), places the error code
+in r1, and executes a break instruction to simulate a halt
+processor instruction.
+