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AmigaOS

AmigaOS. Chase Sensky CS-550-1: Operating Systems Fall 2005. History of the AmigaOS. Atari (1980) Jay Miner Hi-Toro (1982) Larry Kaplan Dave Morse Lorraine Amiga (1982). History of the AmigaOS (cont.). Chip Prototypes Completed (1983) Agnus (Address Generator)

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AmigaOS

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  1. AmigaOS Chase Sensky CS-550-1: Operating Systems Fall 2005

  2. History of the AmigaOS • Atari (1980) • Jay Miner • Hi-Toro (1982) • Larry Kaplan • Dave Morse • Lorraine • Amiga (1982)

  3. History of the AmigaOS (cont.) • Chip Prototypes Completed (1983) • Agnus (Address Generator) • Denise (Display Adapter) • Paula (Ports and Audio) • Consumer Electronics Show (CES) (1984) • Commodore (1984) • AmigaOS as a Luxury (1987) • Preemptive Multitasking • Robust Graphics

  4. History of the AmigaOS (cont.) • Amiga A3000 (1990) • 32-bit System • SCSI Support • Cleaner, more professional user interface • AmigaOS 3.0 (1992) • CrossDOS • Stagnate Sales (1995) • Gateway 2000 (1997)

  5. History of the AmigaOS (cont.) • AmigaOS 3.5 (1998) • TCP • USB • PowerPC • AmigaOS 3.9 (2000) • Shareware upgrades and fixes • AmigaOS 4.0 (2001) • Hyperion VOF • Eyetech Group Ltd.

  6. Kickstart • Bootstrap ROM • Kernel Components • Graphical User Interface (GUI) • Preemptive Multitasking Microkernel • File System • Softkickers • Size

  7. Graphical User Interface • graphics.library • Custom chipsets • Low level programming • PAL • NTSC • VGA • Intuition

  8. Preemptive Multitasking Microkernel • Exec.library • Memory • System Lists • Library Management • Scheduling • TS_RUN • TS_READY • TS_WAIT

  9. File System • dos library • Communication Between Tasks • Synchronous • Asynchronous • File and Directory Naming Conventions • 30 characters • May not contain “:” or “/” • File Flags • Executable Files • HUNKS

  10. Graphical Shell • Workbench • Customization • Screen fonts • Languages • Wallpaper • Cursors

  11. Strengths • Multimedia • Custom Graphic Chipsets • Custom Sound Chipsets • Lightweight • Powerful • Customizable

  12. Weaknesses • Little Flexibility • File Management • Not Adaptive

  13. Conclusions • Rich History • Overall Impressed • Eager To See AmigaOS 4.0 • x86 Compatible • Still Innovative After 20 Years?

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