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AmigaOS is the proprietary native operating system 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.〔(【引用サイトリンク】 publisher = Amiga Documents )〕〔(【引用サイトリンク】 publisher = amiga-news.de )〕 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. == Components == AmigaOS is a single-user operating system based on a preemptive multitasking kernel, called Exec. AmigaOS provides 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''. A command-line interface (CLI), called AmigaShell, is also integrated into the system, though it also is entirely window based. The CLI and Workbench components share the same privileges. Notably, AmigaOS lacks any built-in memory protection. AmigaOS is formed from two parts, namely, a firmware component called ''Kickstart'' and a software portion usually referred to as ''Workbench''. Up until AmigaOS 3.1, matching versions of Kickstart and Workbench were typically released together. However, since AmigaOS 3.5, the first release after Commodore's demise, only the software component has been updated and the role of Kickstart has been diminished somewhat. Firmware updates may still be applied by patching at system boot. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「AmigaOS」の詳細全文を読む スポンサード リンク
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