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Amiga OS

AmigaOS
AmigaOS 4.1 Update 2.png
Screenshot of AmigaOS 4.1
Developer Commodore International, Hyperion Entertainment
Written in Assembly Language, BCPL, C
OS family Amiga
Working state Current
Source model Closed source
Initial release July 23, 1985; 31 years ago (1985-07-23)
Latest release 4.1 Final Edition Update 1 / December 31, 2016; 34 days ago (2016-12-31)
Platforms M68K: versions 1.0 through 3.9
PowerPC: versions 4.0 through 4.1
Kernel type Microkernel
Default user interface Graphical (Workbench)
License Proprietary
Official website www.amigaos.net

AmigaOS is a family of proprietary native operating systems of the Amiga and AmigaOne personal computers. It was developed first by Commodore International and introduced with the launch of the first Amiga, the Amiga 1000, in 1985. Early versions of AmigaOS required the Motorola 68000 series of 16-bit and 32-bit microprocessors. Later versions were developed by Haage & Partner (AmigaOS 3.5 and 3.9) and then Hyperion Entertainment (AmigaOS 4.0-4.1). A PowerPC microprocessor is required for the most recent release, AmigaOS 4.

AmigaOS is a single-user operating system based on a preemptive multitasking kernel, called Exec. It includes an abstraction of the Amiga's hardware, a disk operating system called AmigaDOS, a windowing system API called Intuition and a desktop file manager called Workbench.

The Amiga intellectual property is fragmented between Amiga Inc., Cloanto, and Hyperion Entertainment. The copyrights for works created up to 1993 are owned by Cloanto. In 2001 Amiga Inc. contracted AmigaOS 4 development to Hyperion Entertainment and in 2009 they granted Hyperion an exclusive, perpetual, worldwide license to AmigaOS 3.1 in order to develop and market AmigaOS 4 and subsequent versions.


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