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- X86_memory_segmentation abstract "x86 memory segmentation refers to the implementation of memory segmentation in the Intel x86 computer instruction set architecture. Segmentation was introduced on the Intel 8086 in 1978 as a way to allow programs to address more than 64 KB (65,536 bytes) of memory. The Intel 80286 introduced a second version of segmentation in 1982 that added support for virtual memory and memory protection. At this point the original model was renamed real mode, and the new version was named protected mode. The x86-64 architecture, introduced in 2003, has largely dropped support for segmentation in 64-bit mode.In both real and protected modes, the system uses 16-bit segment registers to derive the actual memory address. In real mode, the registers CS, DS, SS, and ES point to the currently used program code segment (CS), the current data segment (DS), the current stack segment (SS), and one extra segment determined by the programmer (ES). The Intel 80386, introduced in 1985, adds two additional segment registers, FS and GS, with no specific uses defined by the hardware. The way in which the segment registers are used differs between the two modes.The choice of segment is normally defaulted by the processor according to the function being executed. Instructions are always fetched from the code segment. Any stack push or pop or any data reference referring to the stack uses the stack segment. All other references to data use the data segment. The extra segment is the default destination for string operations (for example MOVS or CMPS). FS and GS have no hardware-assigned uses. The instruction format allows an optional segment prefix byte which can be used to override the default segment for selected instructions if desired.".
- X86_memory_segmentation thumbnail Overlapping_realmode_segments.svg?width=300.
- X86_memory_segmentation wikiPageExternalLink index.htm.
- X86_memory_segmentation wikiPageExternalLink Segments.html.
- X86_memory_segmentation wikiPageID "150178".
- X86_memory_segmentation wikiPageLength "20574".
- X86_memory_segmentation wikiPageOutDegree "82".
- X86_memory_segmentation wikiPageRevisionID "706002331".
- X86_memory_segmentation wikiPageWikiLink A20_line.
- X86_memory_segmentation wikiPageWikiLink Address_bus.
- X86_memory_segmentation wikiPageWikiLink Address_space.
- X86_memory_segmentation wikiPageWikiLink Advanced_Micro_Devices.
- X86_memory_segmentation wikiPageWikiLink Buffer_overflow_protection.
- X86_memory_segmentation wikiPageWikiLink Byte.
- X86_memory_segmentation wikiPageWikiLink Call_stack.
- X86_memory_segmentation wikiPageWikiLink Category:X86_memory_management.
- X86_memory_segmentation wikiPageWikiLink Code_segment.
- X86_memory_segmentation wikiPageWikiLink Data_segment.
- X86_memory_segmentation wikiPageWikiLink Flat_memory_model.
- X86_memory_segmentation wikiPageWikiLink GNU_Compiler_Collection.
- X86_memory_segmentation wikiPageWikiLink General_protection_fault.
- X86_memory_segmentation wikiPageWikiLink Global_Descriptor_Table.
- X86_memory_segmentation wikiPageWikiLink Hexadecimal.
- X86_memory_segmentation wikiPageWikiLink High_memory_area.
- X86_memory_segmentation wikiPageWikiLink IA-32.
- X86_memory_segmentation wikiPageWikiLink IBM_Personal_Computer.
- X86_memory_segmentation wikiPageWikiLink AT.
- X86_memory_segmentation wikiPageWikiLink IBM_Personal_Computer_XT.
- X86_memory_segmentation wikiPageWikiLink INT_(x86_instruction).
- X86_memory_segmentation wikiPageWikiLink Instruction_set.
- X86_memory_segmentation wikiPageWikiLink Intel.
- X86_memory_segmentation wikiPageWikiLink Intel_80286.
- X86_memory_segmentation wikiPageWikiLink Intel_80386.
- X86_memory_segmentation wikiPageWikiLink Intel_8086.
- X86_memory_segmentation wikiPageWikiLink Intel_Memory_Model.
- X86_memory_segmentation wikiPageWikiLink Kilobyte.
- X86_memory_segmentation wikiPageWikiLink Linux_kernel.
- X86_memory_segmentation wikiPageWikiLink MS-DOS.
- X86_memory_segmentation wikiPageWikiLink Megabyte.
- X86_memory_segmentation wikiPageWikiLink Memory_address.
- X86_memory_segmentation wikiPageWikiLink Memory_protection.
- X86_memory_segmentation wikiPageWikiLink Memory_segmentation.
- X86_memory_segmentation wikiPageWikiLink Microsoft_Windows.
- X86_memory_segmentation wikiPageWikiLink Paging.
- X86_memory_segmentation wikiPageWikiLink Physical_Address_Extension.
- X86_memory_segmentation wikiPageWikiLink Physical_address.
- X86_memory_segmentation wikiPageWikiLink Privilege_level.
- X86_memory_segmentation wikiPageWikiLink Protected_mode.
- X86_memory_segmentation wikiPageWikiLink Real_mode.
- X86_memory_segmentation wikiPageWikiLink Register_transfer_language.
- X86_memory_segmentation wikiPageWikiLink Segment_descriptor.
- X86_memory_segmentation wikiPageWikiLink Stack-based_memory_allocation.
- X86_memory_segmentation wikiPageWikiLink THE_multiprogramming_system.
- X86_memory_segmentation wikiPageWikiLink Thread-local_storage.
- X86_memory_segmentation wikiPageWikiLink Thread_(computing).
- X86_memory_segmentation wikiPageWikiLink Triple_fault.
- X86_memory_segmentation wikiPageWikiLink Virtual_8086_mode.
- X86_memory_segmentation wikiPageWikiLink Virtual_memory.
- X86_memory_segmentation wikiPageWikiLink Win32_Thread_Information_Block.
- X86_memory_segmentation wikiPageWikiLink X86.
- X86_memory_segmentation wikiPageWikiLink X86-64.
- X86_memory_segmentation wikiPageWikiLink X86_assembly_language.
- X86_memory_segmentation wikiPageWikiLink X86_string_instructions.
- X86_memory_segmentation wikiPageWikiLink File:Overlapping_realmode_segments.svg.
- X86_memory_segmentation wikiPageWikiLink File:Protected_mode_segments.svg.
- X86_memory_segmentation wikiPageWikiLinkText "8086 segments".
- X86_memory_segmentation wikiPageWikiLinkText "Segmented addressing".
- X86_memory_segmentation wikiPageWikiLinkText "X86 memory segmentation".
- X86_memory_segmentation wikiPageWikiLinkText "memory segment".
- X86_memory_segmentation wikiPageWikiLinkText "memory segmentation".
- X86_memory_segmentation wikiPageWikiLinkText "memory segments".
- X86_memory_segmentation wikiPageWikiLinkText "segment or selector-offset".
- X86_memory_segmentation wikiPageWikiLinkText "segment selector".
- X86_memory_segmentation wikiPageWikiLinkText "segment value".
- X86_memory_segmentation wikiPageWikiLinkText "segment".
- X86_memory_segmentation wikiPageWikiLinkText "segmentation architecture".
- X86_memory_segmentation wikiPageWikiLinkText "segmentation facility".
- X86_memory_segmentation wikiPageWikiLinkText "segmentation".
- X86_memory_segmentation wikiPageWikiLinkText "segmented memory".
- X86_memory_segmentation wikiPageWikiLinkText "segmented".
- X86_memory_segmentation wikiPageWikiLinkText "segments".
- X86_memory_segmentation wikiPageWikiLinkText "x86 memory segmentation".
- X86_memory_segmentation wikiPageWikiLinkText "x86 memory segmentation#Practices".
- X86_memory_segmentation wikiPageUsesTemplate Template:Citation_needed.
- X86_memory_segmentation wikiPageUsesTemplate Template:Lowercase.
- X86_memory_segmentation wikiPageUsesTemplate Template:Refimprove_section.
- X86_memory_segmentation wikiPageUsesTemplate Template:Reflist.
- X86_memory_segmentation subject Category:X86_memory_management.
- X86_memory_segmentation comment "x86 memory segmentation refers to the implementation of memory segmentation in the Intel x86 computer instruction set architecture. Segmentation was introduced on the Intel 8086 in 1978 as a way to allow programs to address more than 64 KB (65,536 bytes) of memory. The Intel 80286 introduced a second version of segmentation in 1982 that added support for virtual memory and memory protection. At this point the original model was renamed real mode, and the new version was named protected mode.".
- X86_memory_segmentation label "X86 memory segmentation".
- X86_memory_segmentation sameAs Q4413527.
- X86_memory_segmentation sameAs Segmentación_de_memoria_del_x86.
- X86_memory_segmentation sameAs X86_메모리_분할.
- X86_memory_segmentation sameAs m.013b5p.
- X86_memory_segmentation sameAs Сегментная_защита_памяти.
- X86_memory_segmentation sameAs Q4413527.
- X86_memory_segmentation sameAs X86記憶體區段.
- X86_memory_segmentation wasDerivedFrom X86_memory_segmentation?oldid=706002331.
- X86_memory_segmentation depiction Overlapping_realmode_segments.svg.
- X86_memory_segmentation isPrimaryTopicOf X86_memory_segmentation.
