Classic Environment in Mac OS X

E38943

Classic Environment in Mac OS X was a compatibility layer that allowed users to run applications designed for the classic Mac OS (pre-OS X) within the Mac OS X operating system.

All labels observed (2)

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf Mac OS X feature
compatibility layer
software component
allows running pre-OS X software without rebooting
architectureDependency PowerPC-only
basedOn Mac OS 9
bootRequirement does not require booting directly into Mac OS 9
category Mac OS X technology
linked to: macOS Cocoa

application compatibility
contrastWith Carbon API
Rosetta
developer Apple Inc.
discontinued yes
discontinuedOn Mac OS X 10.5 Leopard
discontinuedReason transition to Intel processors and end of Mac OS 9 support
emulationType API-level compatibility layer
introducedIn early versions of Mac OS X
lastSupportedIn Mac OS X 10.4 Tiger on PowerPC
notAvailableIn Mac OS X on Intel
linked to: macOS

macOS
operatingSystem Mac OS X
linked to: macOS

Mac OS X 10.0 Cheetah
Mac OS X 10.1 Puma
Mac OS X 10.2 Jaguar
Mac OS X 10.3 Panther
Mac OS X 10.4 Tiger
primaryUseCase businesses and users dependent on legacy Mac OS 9 software
provides legacy software support during transition from Mac OS 9 to Mac OS X
purpose run classic Mac OS applications under Mac OS X
requires Mac OS 9 system folder
PowerPC processor
requiresLicenseOf Mac OS 9
requiresRebootToMacOS9 no
runsAs separate Mac OS 9 process under Mac OS X
runsWithin Mac OS X graphical environment
status obsolete
successor none; classic apps eventually required rewriting for Mac OS X
supportedPlatform PowerPC Macintosh
supports classic Mac OS applications
supportsClipboardIntegration yes
supportsFileSystemIntegration yes
supportsMultitaskingWith native Mac OS X applications
supportsPrintingVia Mac OS X printing system
timePeriod early 2000s transition from Mac OS 9 to Mac OS X
unsupportedPlatform Intel-based Macintosh
userInterface runs classic apps in windows on Mac OS X desktop
visibleToUserAs Classic preference pane in System Preferences

How these facts were elicited

Referenced by (2)

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

Classic Mac OS emulationEnvironment Classic Environment in Mac OS X
Rhapsody containsEnvironment Blue Box classic Mac OS environment
linked to: Classic Environment in Mac OS X