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The Amiga is a family of home computers that were designed and sold by the Amiga Corporation (and later by Commodore Computing International) from 1985 to 1994.^[1][2]

The Amiga's Original Chip Set, code-named Lorraine, was designed by the Amiga Corporation during the end of the first home video game boom. Development of the Lorraine project was done using a Sage IV machine nicknamed "Agony" which had 64-kbit memory modules with a capacity of 1 mbit and a 8 MHz CPU.^[3][4][5] Amiga Corp. funded the development of the Lorraine by manufacturing game controllers, and later with an initial bridge loan from Atari Inc. while seeking further investors. The chipset was to be used in a video game machine, but following the video game crash of 1983, the Lorraine was reconceived as a multi-tasking multi-media personal computer.

The company demonstrated a prototype at the January 1984 Consumer Electronics Show (CES) in Chicago, attempting to attract investors.^[6][7] The Sage acted as the CPU, and BYTE described "big steel boxes" substituting for the chipset that did not yet exist.^[8] The magazine reported in April 1984 that Amiga Corporation "is developing a 68000-based home computer with a custom graphics processor. With 128K bytes of RAM and a floppy-disk drive, the computer will reportedly sell for less than $1000 late this year."^[9]

Further presentations were made at the following CES in June 1984, to Sony, HP, Philips, Apple, Silicon Graphics, and others.^[6] Steve Jobs of Apple, who had just introduced the Macintosh in January, was shown the original prototype for the first Amiga and stated that there was too much hardware – even though the newly redesigned board consisted of just three silicon chips which had yet to be shrunk down.^[7][10] Investors became increasingly wary of new computer companies in an industry dominated by the IBM PC.^[8] Jay Miner, co-founder, lead engineer and architect, took out a second mortgage on his home to keep the company from going bankrupt.^[6]

In July 1984, Atari Inc. was bought by the recently resigned CEO and founder of Commodore, Jack Tramiel. A substantial number of Commodore's employees followed him, prompting a lawsuit from Commodore for theft of trade secrets.^[11] Tramiel's son Leonard later discovered that Atari Inc. had lent $500,000 to the Amiga Corporation, with repayment due at the end of June, prompting Atari Corp. to counter Commodore.^[6]

In a subsequent development, the Amiga group received interested from Commodore, and began discussions of selling the company.^[12] In August 1984, Amiga was purchased by Commodore for $27 million, including paying off the loan from Atari.^[7]

When the first Amiga computer was released in July 1985 by Commodore, it was called the Amiga 1000, devoid of references to Commodore. Commodore marketed it both as their successor to the Commodore 64, and as their competitor against the Macintosh. It was later renamed the Amiga 1000.

At a relatively affordable base price of US$1,295 (equivalent to $3,669 in 2023), the Amiga could display up to 4,096 colors, produce 8-bit stereo audio, and run several applications concurrently. These qualities were unprecedented in a consumer-oriented computer and gave the Amiga 1000 a significant technical lead on its three main competitors (the Atari ST, the Macintosh, and the IBM PC).

The public saw both Commodore and Atari selling, as John C. Dvorak wrote, "cheap disposable" game machines,^[13] and observers believed that either the ST or Amiga would survive, but not both. The ST had more software in the beginning, but larger companies like Electronic Arts and Activision promised to make software for the Amiga. Neither had distribution from major chains like ComputerLand or BusinessLand, or support from large business-software companies like Microsoft, Ashton-Tate, or Lotus. The New York Times stated that "it is not clear that the business computer user really cares about colorful graphics".^[14] The computers' sophisticated graphics strengthened their perception as "game machines".^[15]

Poorly marketed,^[16] the Amiga 1000 was not a success. An August 1986 Compute! editorial expressed amazement that Commodore, insisting that the Amiga was a business computer, did not show it at the summer CES. The magazine estimated that in their first year of availability, the Atari ST had outsold the Amiga. Stating that the "industry needs the vision and direction that a Commodore can help provide", it urged the company to pursue the consumer market that had been very successful for the Commodore 64.^[17] Jerry Pournelle from BYTE praised the Amiga Sidecar as "really impressive", and approved of the "great deal of Amiga software" at Spring COMDEX, but wondered "whether Commdore has enough high-tech people to support the Amiga properly" after large layoffs, while "Atari ST software pours forth like a flood".^[18] Bruce Webster reported in January 1987 that Commodore had sold about 150,000 Amigas as of October 1986, but "imagine how many [the company] might have sold if they had done things right". He criticized many aspects of Commodore's handling of the computer, including selling "not-quite-finished" hardware and software, not supporting third-party developers, poor advertising, and internal uncertainty of the Amiga's target market.^[19] Aware of its reputation, Commodore asked the press to call the computer "The Amiga, from Commodore" and designed new logos to replace its own iconic "C=" design. Commodore compounded the problem by marketing the new 8-bit Commodore 128 alongside the Amiga, confusing the general public about Commodore's direction and the Amiga's advantages.

By 1987, rumors spread that the size of the Amiga market disappointed software vendors, which were uncertain of Commodore's intention for the computer. Bing Gordon of Electronic Arts, which had prominently supported the Amiga, stated that year that "the Amiga has never done as well as we had hoped when we started out", and that Electronic Arts had expected Commodore to sell it as a $600 high-end home computer instead of an $1800 business computer. The best-selling Amiga games sold about 25,000 copies in 1986, said Gordon, compared to 125,000 to 150,000 copies on the Commodore 64.^[20] In 1994 BYTE wrote "The Amiga was so far ahead of its time that almost nobody – including Commodore's marketing department – could fully articulate what it was all about. Today, it's obvious the Amiga was the first multimedia computer, but in those days it was derided as a game machine because few people grasped the importance of advanced graphics, sound, and video."^[21] This marketing confusion would plague the Amiga throughout its lifetime, even as it changed hands between Escom, Gateway, and other owners.

In 1987, faced with strong competition from Atari ST in the lower end of the segment, Commodore released the cost-reduced Amiga 500 and the high-end Amiga 2000, for the respective prices of US$699 and $2395 (this price included 1 MB RAM and a monitor).

By 1988, software sales for the Amiga remained disappointing, compared to those for the IBM PC, Commodore 64, and Apple II.^[22] With its lowered price, the Amiga 500 became a successful home computer and eventually outsold its main rival, the Atari ST.^[23] The Amiga 2000, thanks to its Genlock and internal expansion slots, also managed to carve out a market niche within desktop video. This market was not as large as the office and publishing markets dominated by the IBM PC and Apple Macintosh, and the Amiga 2000 lagged behind these systems in sales. Additionally, Commodore had initially announced a price of $1495 for 2000,^[24] resulting in widespread disappointment among their customer base when the higher price was made public. This was also the case for the A500, which Commodore announced its price as $595.95, but later released it at $699. The Amiga did see widespread use in the television and video production industry during the late 1980s and early 1990s, including on popular shows like Clarissa Explains It All and Unsolved Mysteries.^[25]

In 1990, Commodore released a significant update of the Amiga platform, in the shape of the Amiga 3000 featuring an enhanced chipset (ECS) and the second release of its operating system, commonly referred to as Workbench 2.0.

Commodore had a poor reputation among consumers and developers. Computer Gaming World wrote in 1990 of its "abysmal record of customer and technical support in the past".^[26] Commodore was unable to match the pace of PC advancement with their lower resources and economy of scale, and users complained that the custom ECS chipset failed to match the features of the PC and Mac display hardware at the time. Users also felt that the operating system (Workbench 2.0) only featured improvements taken from the user community. As Apple was the only other major user of Motorola chips at the time, Commodore often had to wait for a new CPU technology until increased supplies allowed Motorola to sell chips to anyone but Apple.

On the plus side, many users considered the Amiga 3000 the most well-engineered Amiga model, and the Amiga 3000's integrated flicker filter made it painless to use inexpensive PC-style VGA monitors. This may in part be the reason Commodore went on to sell one million Amigas in just one year, which is equal to a third of all Amigas sold up to that time.

In the same year as the Amiga 3000, Commodore released the US$895 CDTV, aimed to move the Amiga platform to the living room and a competitor to devices such as Philips CD Interactive (CD-I). Commodore believed that there was a market for a system that could display animations, pictures and offer educational software and games on television, and many game developers thought that interactive CD-based video games would become a popular market. The end result was a system that could be described as an Amiga 500 with a remote control replacing the keyboard and a CD-ROM replacing the floppy drive.

Considering that the Amiga 500 was cheaper, more versatile, and had the promise of a future CDTV expansion, few Amiga users had any interest in the Amiga CDTV. At the same time, the general public preferred cheaper game consoles over both the CDTV and CD-I, and they were not aware of or interested in the multimedia potential of these CD-ROM based systems.

Both Commodore and Philips tried to tempt users with the promise of an MPEG-1 module capable of playing video from a CD-ROM. These Video CDs can be considered lower-resolution versions of today's Digital Versatile Disks (DVDs), but without some additional features and the inconvenience of having to change the disks during a full-length movie.

The CDTV became Commodore's first Amiga-based failure, one that allegedly cost them a significant amount of resources. Commodore made a last-ditch effort in saving the system with the CDTV 2 but dropped that design in favor of the much more capable Amiga CD32.

Commodore began 1992 early by introducing the Amiga 500+, a slightly updated and cost-reduced Amiga 500. Viewed primarily as a game machine, especially in Europe, this model was criticized for not being able to run popular games such as SWIV, Treasure Island Dizzy, and Lotus Esprit Turbo Challenge, and some people returned them to dealers, demanding an original Amiga 500.^{[citation needed]}

By the early 1990s, the IBM PC platform dominated the market for computer games. In December 1992, Computer Gaming World (CGW) reported that MS-DOS accounted for 82% of game sales in 1991, compared to Macintosh's 8% and Amiga's 5%. In response to a reader's challenge to find a DOS game that played better than the Amiga version the magazine cited Wing Commander and Civilization, and added that "The heavy MS-DOS emphasis in CGW merely reflects the realities of the market".^[27] Instead of discontinuing the Amiga 500 and 500+, Commodore envisioned it taking the place of the Commodore 64 in the low-cost segment. To make that possible Commodore set out to design the Amiga 600, a system intended to be much cheaper than the Amiga 500. The Amiga 500 itself would be replaced by Amiga 1200, also under development.

Commodore had the new machines (A600) manufactured in Australia and launched them on what it assumed would be an eager market. Unfortunately, soon afterward it announced that two new super-Amigas would be released.

— Edge, August 1995^{[This quote needs a citation]}

Shortly after releasing the Amiga 600, Commodore announced that two new super Amigas would be released at the end of the year. In classic Osborne style, consumers decided to wait for the new Amigas and Commodore had to close their Australian office in face of plummeting sales.^[28] At the same time, Commodore's foray into the highly competitive PC market was unsuccessful. This contributed to Commodore's 1992 profits falling to an unimpressive $28 million,^[28] and made the need for a successful new Amiga launch all that more critical.

In October 1992, Commodore released the Amiga 1200 and the Amiga 4000. Each featured the new AGA chipset and the third release of AmigaOS.

Computer Gaming World reported in March 1993 that declining Amiga sales were "causing many U.S. publishers to quit publishing Amiga titles",^[29] and in July that at the Spring European Computer Trade Show the computer was, unlike 1992, "hardly mentioned, let alone seen".^[30] That year Commodore marketed the CD32, which was one of the earliest CD-based consoles and was also the world's first 32-bit game machine, with specifications similar to the A1200.

The last Amiga (and the last computer) released by Commodore was the A4000T, in 1994.

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Mass-market Amigas were considerably cheaper than PCs and Macintoshes at the time. This factor helped to boost sales in European markets, but it also continued Commodore's misfortune of being viewed in the more price-conscious US markets as a producer of cheap "toy computers" and "game machines". This perception was furthered by the fact that most Commodore retail outlets were toy stores, and marketing campaigns were mismatched with the public's needs and wants. Overall, the Amiga was very successful in Europe, but it sold less than a million units in the US.

Additionally, in the US market, the IBM PC was already a dominant market force, especially in the workplace. Potential buyers' first question was often, "Is it IBM compatible?", allowing the user to "take work home" or more often, take software home to install on their own machines. To satisfy these users, Commodore introduced a variety of PC-compatibility add-ons, such as the Amiga Sidecar for the Amiga 1000, the Bridge Board for the A2000, and a 5.25" floppy disk drive to facilitate data exchange with PC disks. Even as Commodore was improving the Amiga's interoperability, the PC's graphics drastically improved from the early mediocre CGA and EGA modes prevalent at the Amiga's introduction to VGA and SVGA, which appeared to match or exceed the Amiga's abilities. This caused a raft of PC gaming titles to be introduced during the late 1980s and early 1990s, including many ported from Amiga versions. Consumers began to see no advantage in the Amiga's "incompatible" technology. Commodore's attempts at interoperability did not persuade users concerned about IBM compatibility to buy an Amiga. Instead, inexpensive PC clones were beginning to flood the US market. As a result, US Amiga users tended to be technophiles enamored of the Amiga's software or hardware capabilities, Commodore loyalists upgrading from the C-64 or 128, iconoclasts who disliked IBM, video and graphic arts enthusiasts, or professionals – the desktop video market was one of the few areas where the Amiga would gain widespread adoption in the US outside of the home.

In 1993, Commodore lost a staggering $357 million.

— Edge, August 1995 edition^{[This quote needs a citation]}

Commodore management voluntarily filed for Chapter 11 under US bankruptcy laws in late April 1994. Chapter 11 US rules allow a firm to recover its debts and reorganize it. Commodore was reorganized in various occasions twice before and repaid by Irving Gould without requesting filing for Chapter 11, but this time, as being controlled by US bankruptcy laws, the court-appointed board of trustees decided to liquidate the company without proceeding to reorganization. The majority of Commodore's assets and name were sold to Escom. Production was halted briefly until it was restarted for a short time under Escom's Amiga Technologies. Though the machines had been upgraded and had plentiful hardware and software support, the lack of new Amigas meant that vendors sooner or later moved on. Most of the technology hobbyists and productivity market moved to PC architecture, sometimes running Linux or BeOS in preference to Microsoft Windows.

Due to the fierce loyalty of some Amiga fans, the 'scene' continued for many year after the last original Amiga was sold. Inevitably, the PC eventually became the undisputed leading home computing technology, and the console wars also left the CD32 behind.

The rights to the Amiga platform were successively sold to Escom, and later, Gateway 2000.^[31] Escom had almost immediately gone bankrupt itself (due to non-Amiga related problems), while Gateway decided to keep the patents and sell the remaining assets to a new company later renamed to Amiga, Inc. (no relation to the original Amiga Corporation) in 1999. Amiga also received a license to use Amiga-related patents, which were retained by Gateway until they expired.^[32] Amiga Inc. sold the copyrights for works created up to 1993 to Cloanto,^[33][34] and commissioned development of AmigaOS 4 to Hyperion Entertainment.

Since the end of the Commodore-Amiga, there have been many attempts to create new Amiga hardware and solutions. All new Amigas are built from standard components without using the original Commodore custom chips.

Only Amiga compatible machines share the original Amiga heritage with the custom chip compatibility. While they are not using the original chips (as in original Amiga computers), they implement compatible functionality using their field-programmable gate arrays (FPGA) or custom bootloaders.

The DraCo was the first Amiga clone. It was released during the bankruptcy of Commodore International in 1994 and was sold until 2000. Unlike later systems employing FPGA for the custom chipset, the Draco only provided compatibility at the operating system level and used a bootloader to patch various system devices and libraries that attempted to directly access any real Amiga chips. It was never intended to be a 'general purpose' desktop computer, however, users have been able to get some models to boot to Workbench.

Minimig is an open source hardware implementation of the Amiga 500 with the custom chipset implemented using a FPGA, released under the GNU General Public Licence. It uses the MC68000 CPU chip from Freescale and supports overclocking up to 50 MHz. The size of the FPGA limited the MiniMig to a subset of the ECS graphics, lacking support for productivity modes on the real chipset. It was also limited to only 2 MB of memory that was artificially split into ROM, "chip", and "fast" segments with an aftermarket 'hack' that could increase it to 4 MB total.

Natami was a hardware project to build 68k-based computers to run AmigaOS.^[36] While the original project is defunct, many of the core members of Natami have moved onto the Vampire project.

Vampire V4 Standalone is an FPGA Amiga-compatible developed by Apollo Accelerators. It is built around the Apollo Core 68080 (AC68080) first launched in the V2 line of accelerators, the V500 and V600, which are compatible with the Amiga 500 and Amiga 600, respectively. Although not originally designed as such, the V500 has also been installed in the original Amiga 1000 and Amiga 2000 desktop systems, as these all used the same, socketed version of the original Motorola 68000 processor. While the V2 was only designed as an accelerator, it was equipped with local memory, Ethernet, microSD and retargetable graphics (RTG), named "SAGA" or Super-AGA.

The V4 is designed to replace the V2 V500 model as an accelerator, as well as operate entirely independently of any computer in a so-called "standalone mode".^[37] To accomplish this, Apollo Accelerators has built a cleanroom version of the AGA chipset and added direct support classic DB9-based joysticks and various low or full-speed USB 2.0 peripherals such as mice, keyboard and gamepads. Amiga AGA graphics are automatically upscaled to HDMI (576p) resolution and can switch automatically between classic and SAGA display modes for use with modern LCD monitors and televisions.

As of August 2019, the AC68080 is the fastest 680x0-compatible Amiga processor with more than four times the performance of the previously fastest, the Motorola 68060. It is capable of 192.12 MIPS and 102.06 MFLOPS, while the Cyberstorm 68060 at 50 MHz was capable of only 39.29 MIPS and 28.02 MFLOPS.^[38] Performance gains are aided by using modern DDR3 memory which is capable of over 500 MiB/s in all memory regions. In contrast, the original Amiga processors were significantly bottlenecked accessing shared "chip" memory, achieving less than 3 MiB/s on OCS and ECS machines, and no more than 6.5 MiB/s on AGA machines with all chipsets having DMA disabled.^[39]

The AC68080 is closed source, although it may be available for licensing.^[40] It is designed to use the original, closed-source Commodore AmigaOS (up to and including the most recent AmigaOS 3.1.4 release from Hyperion), but can also run AROS, EmuTOS, and FreeMiNT, as well as the Classic Macintosh OS.

A number of suppliers have begun to spring up to provide components to allow users to build their own Amiga compatibles.^[41] This includes new motherboards^[42] and cases.^[43] intended to be combined with either an emulator or an FPGA.

The AmigaOS is known for combining the functionality of OS and window manager.^[44] It was primarily designed to run on PowerPC Amiga systems or hardware equipped with Cyberstorm PPC or BlizzardPPC accelerator boards as well as AmigaOne computers with PPC Teron installed. This system was only available in developer pre-releases for several years until the final release in December 2006. Since 2001, Hyperion Entertainment has been developing new AmigaOS 4 running on PowerPC-based systems. The contract between Amiga Inc. and this Belgian-German company only allowed for the availability of the commercial AmigaOS 4 license to computers with AmigaOne motherboards.

AmigaOS 4 also runs on the Sam440 line developed by ACube Systems, following an agreement Hyperion. It also runs on Pegasos II systems developed by Genesi/bPlan and AmigaOne systems developed by British Eyetech and A-eon Technologies. AmigaOS 4 can run system-friendly AmigaOS software written for original Commodore Amigas.

AmigaOS 4 provides backward-compatibility to 68K software through tiered emulation. If the program is known to be OS-friendly (it does not attempt to access hardware directly), then a lightweight JIT emulator is used and calls are allowed directly to AmigaOS 4's API which remains largely compatible to AmigaOS 3.x. However, if the program is not known, or is known to access hardware directly, then it will be executed using E-UAE.

AROS is an open-source re-implementation of AmigaOS and is designed more for portability. The features of the first attempts replicated those found in the AmigaOS 3.1.^[45] It runs on many x86-based systems as native or hosted flavors. AROS also runs on some 68k-based Amigas and PowerPC systems. There are also sellers of 'AresOne' systems dedicated to run AROS only. Unlike many other Amiga-based solutions, AROS is Amiga binary compatible only on 68k-based systems.^[46] This version is recognized for its high degree of compatibility at the source-code level, allowing it to make concessions towards the legacy deficiencies of the OS it was based from.^[45]

MorphOS is a closed-source re-implementation of AmigaOS. It runs on PowerPC-based systems but can run system-friendly AmigaOS software written for the original Commodore Amigas. MorphOS runs on Efika, Pegasos I/II and PowerPC based Apple Mac G4 models, such as the Mac Mini, eMac, PowerMac, PowerBook, and iBook.

Wikimedia Commons has media related to Amiga computers.

• A history of the Amiga - Jeremy Reimer's discussion of the history behind the Amiga's creation and demise with Commodore.
• Famous Amiga Uses