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-@c COPYRIGHT (c) 1988-2002.
-@c On-Line Applications Research Corporation (OAR).
-@c All rights reserved.
-@chapter CPU Model Dependent Features
-Microprocessors are generally classified into
-families with a variety of CPU models or implementations within
-that family. Within a processor family, there is a high level
-of binary compatibility. This family may be based on either an
-architectural specification or on maintaining compatibility with
-a popular processor. Recent microprocessor families such as the
-SPARC or PowerPC are based on an architectural specification
-which is independent or any particular CPU model or
-implementation. Older families such as the M68xxx and the iX86
-evolved as the manufacturer strived to produce higher
-performance processor models which maintained binary
-compatibility with older models.
-RTEMS takes advantage of the similarity of the
-various models within a CPU family. Although the models do vary
-in significant ways, the high level of compatibility makes it
-possible to share the bulk of the CPU dependent executive code
-across the entire family. Each processor family supported by
-RTEMS has a list of features which vary between CPU models
-within a family. For example, the most common model dependent
-feature regardless of CPU family is the presence or absence of a
-floating point unit or coprocessor. When defining the list of
-features present on a particular CPU model, one simply notes
-that floating point hardware is or is not present and defines a
-single constant appropriately. Conditional compilation is
-utilized to include the appropriate source code for this CPU
-model's feature set. It is important to note that this means
-that RTEMS is thus compiled using the appropriate feature set
-and compilation flags optimal for this CPU model used. The
-alternative would be to generate a binary which would execute on
-all family members using only the features which were always
-This chapter presents the set of features which vary
-across i960 implementations and are of importance to RTEMS.
-The set of CPU model feature macros are defined in the file
-cpukit/score/cpu/i960/i960.h based upon the particular CPU
-model defined on the compilation command line.
-@section CPU Model Name
-The macro CPU_MODEL_NAME is a string which designates
-the name of this CPU model. For example, for the Intel i960CA,
-this macro is set to the string "i960ca".
-@section Floating Point Unit
-The macro I960_HAS_FPU is set to 1 to indicate that
-this CPU model has a hardware floating point unit and 0