Portal:Amiga

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The Amiga Portal

The 1987 Amiga 500 was the best-selling model.

The Amiga is a family of personal computers introduced by Commodore in 1985. The original model is one of a number of computers with 16- or 32-bit processors, 256 KB or more of RAM, mouse-based GUIs, and significantly improved graphics and audio compared to previous 8-bit systems. This includes the Atari ST – released earlier the same year – as well as the Macintosh and Acorn Archimedes. Based on the Motorola 68000 microprocessor, the Amiga differs from its contemporaries through the inclusion of custom hardware to accelerate graphics and sound, including sprites and a blitter, and a pre-emptive multitasking operating system called AmigaOS.

The Amiga 1000 was released in July 1985, but production problems kept it from becoming widely available until early 1986. The best-selling model, the Amiga 500 was introduced in 1987 (along with the more expandable Amiga 2000). The Amiga 3000 was introduced in 1990, followed by the Amiga 500 Plus, and the Amiga 600 in March 1992. Finally, the Amiga 1200 and the Amiga 4000 were released in late 1992. The Amiga line sold an estimated 4.85 million units during the late 1980s to early 1990s.

Although early advertisements cast the computer as an all-purpose business machine, especially when outfitted with the Sidecar IBM PC compatibility add-on, the Amiga was most commercially successful as a home computer, with a wide range of games and creative software. The Video Toaster hardware and software suite helped Amiga find a prominent role in desktop video and video production. The Amiga's audio hardware made it a popular platform for music tracker software. The processor and memory capacity enabled 3D rendering packages, including LightWave 3D, Imagine, and Traces, a predecessor to Blender.

Poor marketing and the failure of later models to repeat the technological advances of the first systems resulted in Commodore quickly losing market share to the rapidly dropping prices of IBM PC compatibles, which gained 256 color graphics in 1987, as well as the fourth generation of video game consoles.

Commodore ultimately went bankrupt in April 1994 after a version of the Amiga packaged as a game console, the Amiga CD32, failed in the marketplace. Since the demise of Commodore, various groups have marketed successors to the original Amiga line, including Genesi, Eyetech, ACube Systems Srl and A-EON Technology. AmigaOS has influenced replacements, clones, and compatible systems such as MorphOS and AROS. Currently Belgian company Hyperion Entertainment maintains and develops AmigaOS 4 which is official and direct descendant of AmigaOS 3.1 - the last system made by Commodore for the original Amiga Computers. (Full article...)

Selected article

The Smart File System (SFS) is a journaling filesystem used on Amiga computers and AmigaOS-derived operating systems (though some support also exists for IBM PC compatibles). It is designed for performance, scalability and integrity, offering improvements over standard Amiga filesystems as well as some special or unique features.

SFS uses block sizes ranging from 512 (29) to 32768 (215) bytes with a maximum partition size of 128 GB. Its good performance, better than FFS, and lack of need for long "validation" in case of an error, is achieved by grouping multiple directory entries into a single block and by grouping meta data blocks together into clusters. A bitmap is used to keep track of free space, and file data is kept track of using extents arranged into a B+ tree structure. (Full article...)

Selected biography

Gillen at the 2011 New York Comic Con
Gillen at the 2011 New York Comic Con
Kieron Gillen (born 1975) is a British comic book writer and former computer game and music journalist. He is known for his creator-owned comics Phonogram and The Wicked + The Divine, both created with artist Jamie McKelvie and published by Image Comics, and for numerous projects for Marvel Comics, such as Journey into Mystery and Uncanny X-Men.

Gillen has worked for publications such as PC Gamer UK, The Escapist, Amiga Power (under the pseudonym "C-Monster"), Wired, The Guardian, Edge, Games Developer, Develop, MCV, GamesMaster and PC Format, among others. (Full article...)

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Amiga Kickstart diskette
Credit: RGR
Amiga Kickstart diskette.

Did you know...

... that AtheOS was originally intended to be a clone of AmigaOS?
Other "Did you know" facts... Read more...

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