Electrical computers and digital processing systems: processing – Processing architecture – Microprocessor or multichip or multimodule processor having...
Reexamination Certificate
2006-06-06
2006-06-06
Chan, Eddie (Department: 2183)
Electrical computers and digital processing systems: processing
Processing architecture
Microprocessor or multichip or multimodule processor having...
C712S229000
Reexamination Certificate
active
07058791
ABSTRACT:
A processor generates a mode indication based on two or more other indications. The mode indication is indicative of whether or not a particular mode is active in the processor. Each indication is stored in a storage location which is addressable via a different instruction. In one embodiment, a long mode in which a 64 bit operating mode is selectable in addition to 32 bit and 16 bit modes may be activated via a long mode active indication. The long mode active indication may be generated by the processor, and may indicate that long mode is active if paging is enabled and a long mode enable indication indicates that long mode is enabled. In this manner, long mode may be activated after paging is enabled (with a set of long mode page tables indicated by the page table base address).
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Hughes William A.
McGrath Kevin J.
Advanced Micro Devices , Inc.
Li Aimee
Merkel Lawrence J.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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