I/O Kit

E215074

device driver framework iOS technology macOS technology software framework

I/O Kit is macOS and iOS’s object-oriented driver framework that manages hardware devices and their interaction with the operating system.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (7)

Label	Occurrences
I/O Kit canonical	3
IOKit framework	2
I/O Kit families	1
I/O Registry	1
IOKit	1
IORegistryEntry class	1
Kernel I/O Kit	1

How this entity was disambiguated

This entity first appeared as the object of triple T1935009 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: I/O Kit
Context triple: [XNU, component, I/O Kit]

A. XNU
XNU is the hybrid operating system kernel developed by Apple that powers macOS and other Apple platforms, combining components from Mach and BSD.
B. NeXTSTEP Foundation Kit
NeXTSTEP Foundation Kit is an object-oriented application framework developed by NeXT Inc. that provided core classes and services for building NeXTSTEP applications and later influenced Apple’s Cocoa frameworks.
C. Oberon operating system
The Oberon operating system is a minimalist, modular OS designed by Niklaus Wirth and Jürg Gutknecht to accompany the Oberon programming language and demonstrate principles of simplicity and efficiency in system design.
D. NeXTSTEP
NeXTSTEP was an advanced Unix-based operating system and development environment created by NeXT Inc., notable for its object-oriented frameworks and influential role in the later development of macOS and iOS.
E. AppleTalk Phase 2
AppleTalk Phase 2 is an enhanced version of Apple’s AppleTalk networking protocol that expanded addressing capabilities and improved support for larger, more complex Macintosh networks.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: I/O Kit
Target entity description: I/O Kit is macOS and iOS’s object-oriented driver framework that manages hardware devices and their interaction with the operating system.

A. XNU
XNU is the hybrid operating system kernel developed by Apple that powers macOS and other Apple platforms, combining components from Mach and BSD.
B. NeXTSTEP Foundation Kit
NeXTSTEP Foundation Kit is an object-oriented application framework developed by NeXT Inc. that provided core classes and services for building NeXTSTEP applications and later influenced Apple’s Cocoa frameworks.
C. Oberon operating system
The Oberon operating system is a minimalist, modular OS designed by Niklaus Wirth and Jürg Gutknecht to accompany the Oberon programming language and demonstrate principles of simplicity and efficiency in system design.
D. NeXTSTEP
NeXTSTEP was an advanced Unix-based operating system and development environment created by NeXT Inc., notable for its object-oriented frameworks and influential role in the later development of macOS and iOS.
E. AppleTalk Phase 2
AppleTalk Phase 2 is an enhanced version of Apple’s AppleTalk networking protocol that expanded addressing capabilities and improved support for larger, more complex Macintosh networks.
F. None of above. chosen

Statements (53)

Predicate	Object
instanceOf	device driver framework ⓘ iOS technology ⓘ macOS technology ⓘ software framework ⓘ
accessibleVia	IOKit framework ⓘ linked to: I/O Kit Kernel framework ⓘ
designedFor	macOS X kernel architecture ⓘ
developedBy	Apple Inc. ⓘ
documentationProvidedBy	Apple Developer Documentation ⓘ
hasComponent	I/O Kit families ⓘ I/O Kit matching dictionary system ⓘ I/O Kit user client mechanism ⓘ I/O Registry ⓘ linked to: I/O Kit
includes	IOBufferMemoryDescriptor class ⓘ IOCommandGate class ⓘ IOInterruptEventSource class ⓘ IOKitLib user-space library ⓘ IONotifier mechanism ⓘ IORegistryEntry class ⓘ linked to: I/O Kit IOService base class ⓘ IOWorkLoop class ⓘ
introducedWith	Mac OS X 10.0 ⓘ linked to: Mac OS X 10.0 Cheetah
license	Apple proprietary license ⓘ
partOf	Darwin operating system ⓘ iOS ⓘ macOS ⓘ
primaryLanguage	C++ ⓘ
programmingModel	object-oriented ⓘ
provides	I/O Kit families ⓘ linked to: I/O Kit I/O registry ⓘ device matching mechanism ⓘ driver class hierarchy ⓘ interrupt handling services ⓘ memory management services for drivers ⓘ plug and play services ⓘ power management framework ⓘ
replaced	classic Mac OS device driver model ⓘ
runsIn	kernel space ⓘ
supports	HID device drivers ⓘ PCI device drivers ⓘ USB device drivers ⓘ audio device drivers ⓘ graphics device drivers ⓘ network device drivers ⓘ storage device drivers ⓘ user-space drivers ⓘ
supportsLanguageSubset	embedded C++ subset ⓘ
usedFor	device driver development ⓘ hardware device management ⓘ hot-plug device support ⓘ plug and play device handling ⓘ power management of devices ⓘ user-space and kernel-space driver interaction ⓘ

How these facts were elicited

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.

XNU → component → I/O Kit ⓘ

I/O Kit → provides → I/O Kit families ⓘ

linked to: I/O Kit

I/O Kit → includes → IORegistryEntry class ⓘ

linked to: I/O Kit

I/O Kit → hasComponent → I/O Registry ⓘ

linked to: I/O Kit

I/O Kit → accessibleVia → IOKit framework ⓘ

linked to: I/O Kit

Darwin (operating system) → includesComponent → I/O Kit ⓘ

subject linked to: Darwin operating system

IOWorkLoop → partOf → IOKit framework ⓘ

subject linked to: IOWorkLoop class

linked to: I/O Kit

IOWorkLoop → namespace → Kernel I/O Kit ⓘ

subject linked to: IOWorkLoop class

linked to: I/O Kit

IOBufferMemoryDescriptor → partOf → I/O Kit ⓘ

subject linked to: IOBufferMemoryDescriptor class

IOBufferMemoryDescriptor → declaredIn → IOKit ⓘ

subject linked to: IOBufferMemoryDescriptor class

linked to: I/O Kit

All labels observed (7)

How this entity was disambiguated Show

Statements (53)

How these facts were elicited Show

Referenced by (10)

How this entity was disambiguated

How these facts were elicited