About: PCI hole

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The PCI hole or PCI memory hole is a limitation of 32-bit hardware and 32-bit operating systems that causes a computer to appear to have less memory available than is physically installed. This memory addressing limitation and the later workarounds necessary to overcome it are functionally similar to the memory limits of the early 8088 IBM PC memory architecture (see Conventional memory).

Attributes	Values
rdfs:label	PCI hole (en)
rdfs:comment	The PCI hole or PCI memory hole is a limitation of 32-bit hardware and 32-bit operating systems that causes a computer to appear to have less memory available than is physically installed. This memory addressing limitation and the later workarounds necessary to overcome it are functionally similar to the memory limits of the early 8088 IBM PC memory architecture (see Conventional memory). (en)
dcterms:subject	Virtual memory X86 architecture X86 memory management Peripheral Component Interconnect
Wikipage page ID	20289168 (xsd:integer)
Wikipage revision ID	1038262905 (xsd:integer)
Link from a Wikipage to another Wikipage	NX bit Memory-mapped I/O DOS memory management Ubuntu RAM limit Moore's law Conventional memory Linux Chipset PSE-36 Physical Address Extension Virtual memory Windows Server 2003 Windows Vista 32-bit 32-bit application 3 GB barrier X86 architecture X86 memory management AGP aperture Hard drives Peripheral Component Interconnect IBM PC Microsoft Windows CPU Expanded memory Expansion card Physical address Video RAM PCI cards Virtual address
sameAs	PCI hole PCI hole PCI hole
dbp:wikiPageUsesTemplate	dbt:Citation_needed dbt:Efn dbt:Notelist dbt:Refimprove dbt:Reflist dbt:Snd
has abstract	The PCI hole or PCI memory hole is a limitation of 32-bit hardware and 32-bit operating systems that causes a computer to appear to have less memory available than is physically installed. This memory addressing limitation and the later workarounds necessary to overcome it are functionally similar to the memory limits of the early 8088 IBM PC memory architecture (see Conventional memory). Similar situations have often arisen in the history of computing, when hardware intended to have up to a certain level of resources is designed to handle several times the maximum expected amount, which eventually becomes a severe restriction as Moore's law increases resources economically available. The original IBM PC was typically supplied with 64 KB of memory or less; it was designed to take a maximum of 640 KB, far more than it was thought would ever be needed. This rapidly became a restriction that had to be handled by complex DOS memory management. Similar successive restrictions in size have been imposed and overcome on hard drives. (en)
gold:hypernym	Limitation
prov:wasDerivedFrom	wikipedia-en:PCI_hole?oldid=1038262905&ns=0
page length (characters) of wiki page	7694 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:PCI_hole
is Link from a Wikipage to another Wikipage of	Memory hole (disambiguation) Memory-mapped I/O PSE-36 Physical Address Extension 3 GB barrier List of RAM drive software PCI memory hole
is Wikipage redirect of	PCI memory hole
is foaf:primaryTopic of	wikipedia-en:PCI_hole

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