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Extended memory

In DOS memory management, extended memory refers to memory above the first megabyte (220 bytes) of address space in an IBM PC or compatible with an 80286 or later processor. The term is mainly used under the DOS and Windows operating systems. DOS programs, running in real mode or virtual x86 mode, cannot directly access this memory, but are able to do so…

Overview & Extended Memory Specification (XMS)

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Overview

DOS memory managementMemoryMegabyteAddress spaceIBM PC
38 related topics

Extended Memory Specification (XMS)

Software interrupt
1 related topics

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Overview

Extended Memory Specification (XMS)

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Map overview Semantic statistics

Extended memory

Nodes42
Edges41
Triples38
Avg. degree1.95
Density0.047619
Components1

How this topic connects Entity context

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Extended memory

Top relations

related to Extended Memory Specification (XMS) · 21
Extended memory → API, CPU, CPUs, GB, HIMEM, IBM PC, Intel, July, KB, MB, Memory, SXMS, SYS, TB, The, The Extended Memory Specification, The XMM, To, With XMS, XMM
related to overview · 11
Extended memory → IBM PC, IBM PC AT, Intel, MB, On, Only, PC, PCs, RAM, ROM, The
related to External links · 2
Extended memory → Specification, XMS

Important terminology Word statistics

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Important terminology

memory extended mode dos xms protected ibm processor available kb specification also mb address pc access expanded api 640 first

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Microsoft Windows manages application programs' access to memoryinstance ofA supervising protected-mode operating system0.80text
Microsoft Windows can also run real-mode programsinstance ofA protected-mode operating system0.80text
provide expanded memory to theminstance ofA protected-mode operating system0.80text
HIMEM.SYSinstance ofsoftware0.80text
Extended memoryrelated to Extended Memory Specification (XMS)The Extended Memory Specification0.60section
Extended memoryrelated to Extended Memory Specification (XMS)XMS0.60section
Extended memoryrelated to Extended Memory Specification (XMS)IBM PC0.60section
Extended memoryrelated to Extended Memory Specification (XMS)Memory0.60section
Extended memoryrelated to Extended Memory Specification (XMS)XMM0.60section
Extended memoryrelated to Extended Memory Specification (XMS)HIMEM0.60section
Extended memoryrelated to Extended Memory Specification (XMS)SYS0.60section
Extended memoryrelated to Extended Memory Specification (XMS)The XMM0.60section

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    Min side: 3
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