Multi-region default memory map

A data processing system is provided with a programmable memory protection unit 10 defining a plurality of programmable memory regions 2, 4, 6, 8 each with associated programmable memory attributes. A default memory protection unit 22 is provided and defines a plurality of default memory regions a,...

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Bibliographic Details
Main Authors AXFORD SIMON, CRASKE SIMON J, KIMELMAN PAUL
Format Patent
LanguageEnglish
Published 05.04.2007
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A data processing system is provided with a programmable memory protection unit 10 defining a plurality of programmable memory regions 2, 4, 6, 8 each with associated programmable memory attributes. A default memory protection unit 22 is provided and defines a plurality of default memory regions a, b, c, d, e each with associated default memory attributes. If a miss occurs in the programmable memory protection unit 10, and the memory access is a privileged level memory access, then the default memory protection unit 22 will return default memory attributes for that memory request.
Bibliography:Application Number: US20050242131