X86-64 - AMD64 - Operating Modes - Legacy Mode

Legacy Mode

The mode used by 16-bit ('protected mode' or 'real mode') and 32-bit operating systems. In this mode, the processor acts like a 32-bit x86 processor, and only 16-bit and 32-bit code can be executed. Legacy mode allows for a maximum of 32 bit virtual addressing which limits the virtual address space to 4 GB. 64-bit programs cannot be run from legacy mode.

Read more about this topic:  X86-64, AMD64, Operating Modes

Other articles related to "mode, legacy mode, legacy, legacy modes":

Amd64 - AMD64 - Architectural Features
... of RAM in Physical Address Extension (PAE) mode, or 4 GB of RAM without PAE mode ... Larger physical address space in legacy mode When operating in legacy mode the AMD64 architecture supports Physical Address Extension (PAE) mode, as do most current x86 processors, but AMD64 extends ... Any implementation therefore allows the same physical address limit as under long mode ...
Amd64 - AMD64 - Operating Modes - Legacy Mode
... The mode used by 16-bit ('protected mode' or 'real mode') and 32-bit operating systems ... In this mode, the processor acts like a 32-bit x86 processor, and only 16-bit and 32-bit code can be executed ... Legacy mode allows for a maximum of 32 bit virtual addressing which limits the virtual address space to 4 GB ...
College Hoops 2K8 - Legacy Mode
... In this type of campaign, the user has the option of going with Open Legacy or Career Legacy ... In Career Legacy, the user can choose from lowly rated basketball programs and bring them into the national spotlight ... In Open Legacy, the user can choose any school and begin their legacy ...
Legacy Mode - Examples
... processors can be run in one of two states long mode provides larger physical address spaces and the ability to run 64-bit applications which can use larger virtual ... These processors' legacy mode allows these processors to act as if they were 16 or 32-bit x86 processors with all of the abilities and limitations of them. 32-bit x86 processors themselves have two legacy modes real mode and virtual 8086 mode ...

Famous quotes containing the words mode and/or legacy:

    The only mode of obtaining an answer to these questions of the senses is to forego all low curiosity, and, accepting the tide of being which floats us into the secret of nature, work and live, work and live, and all unawares the advancing soul has built and forged for itself a new condition, and the question and the answer are one.
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    What is popularly called fame is nothing but an empty name and a legacy from paganism.
    Desiderius Erasmus (c. 1466–1536)