Portal:Amiga
The Amiga Portal

Amiga is a family of personal computers produced by Commodore from 1985 until the company's bankruptcy in 1994, with production by others afterward. The original model is one of a number of mid-1980s computers with 16-bit or 16/32-bit processors, 256 KB or more of RAM, mouse-based GUIs, and significantly improved graphics and audio compared to previous 8-bit systems. These include the Atari ST as well as the Macintosh and Acorn Archimedes. The Amiga differs from its contemporaries through custom hardware to accelerate graphics and sound, including sprites, a blitter, and four channels of sample-based audio. It runs a pre-emptive multitasking operating system called AmigaOS, with a desktop environment called Workbench.
The Amiga 1000, based on the Motorola 68000 microprocessor, was released in July 1985. Production problems kept it from becoming widely available until early 1986. While early advertisements cast the computer as an all-purpose business machine, especially with the Sidecar IBM PC compatibility add-on, the Amiga was most commercially successful as a home computer with a range of video games and creative software. The bestselling model, the Amiga 500, was introduced in 1987 along with the more expandable Amiga 2000. The 1990 Amiga 3000 includes a minor update to the graphics hardware via the Enhanced Chip Set also used in subsequent models.
The Amiga established a niche in audio and multimedia. The first music tracker was written for the Amiga, and it became a popular platform for music creation. The 3D rendering packages LightWave 3D, Imagine, and Traces (a predecessor to Blender) originated on the system. The 1990 third-party Video Toaster made the Amiga a comparatively low cost option for video production. In later years, the Amiga started losing market share to IBM PC compatibles and video game consoles, eventually leading to Commodore's bankruptcy in 1994 and the end of Amiga. Commodore is estimated to have sold 4.85 million Amigas. Various groups have since released spiritual successors. (Full article...)
Selected article
Minimig (short for Mini Amiga) is an open source re-implementation of an Amiga 500 using a field-programmable gate array (FPGA).
Minimig started in secrecy around January 2005 as a proof of concept by Dutch electrical engineer Dennis van Weeren. He intended Minimig as the answer to the ongoing discussions within the Amiga community on implementing the Amiga custom chipset using an FPGA. The project's source code and schematics were released under version 3 of the GNU General Public Licence on 25 July 2007.
The original Minimig prototype is based on the Xilinx Spartan-3 Starter Kit, the Original Amiga Chipset is synthesized in the FPGA. Two printed circuit boards are attached via the FPGA kit expansion ports. The first one holds a 3.3V Motorola 68000 type CPU. The second has a MultiMediaCard slot with a small PIC microcontroller acting as a disc controller that supports the FAT16 filesystem and does on-the-fly Amiga disk file (ADF) decoding.
The prototype was shown at an Amiga meet and loaded most Amiga programs although bugs did exist. Van Weeren's personal preferences led to the use of verilog instead of VHDL on a PC using Xilinx Webpack software for code development. (Full article...)
Selected biography
Jeremy "Jez" San OBE (born 29 March 1966) is an English game programmer and entrepreneur who founded Argonaut Software as a teenager in the 1980s. He is best known for the 1986 Atari ST game Starglider and helping to design the Super FX chip used in Star Fox for the Super NES.
San bought his first computer, a TRS-80, at age twelve. Within a year he taught himself assembly language for several microprocessors.
San founded Argonaut Software in 1982 as a way to get software consulting jobs with large companies. He worked on security systems with British Telecom and Acorn. In 1984, he started developing his first game, Skyline Attack for the Commodore 64, and also co-wrote a book, Quantum Theory, about the Sinclair QL. He became a wizard (admin) at Essex MUD, the world's first multiplayer online role-playing game. (Full article...)
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