Datamax UV-1R, with the associated analog breakout box on top
The Datamax UV-1 is a pioneering computer designed by a group of computer graphics artists working at the University of Illinois at Chicago, known as the Circle Graphics Habitat. It was primarily the brainchild of Tom DeFanti, who was trying to build a machine capable of running his GRASS programming language at a personal computer price point, a project they referred to as the Z-Box. As time went on the project evolved into a machine intended to be used to make high-quality color graphics for output to videotape, and later as a titling system for use by cable television companies. It represents what seems to be the first dedicated graphics workstation.
DeFanti had been working at the Habitat for some time when, in 1977, he was introduced to Jeff Frederiksen, a chip designer working at Dave Nutting Associates. Nutting had been contracted by Midway, the video game division of Bally, to create a standardized graphics driver chip. They intended to use it in most of their future arcade games, as well as a console they were working on which would later turn into the Astrocade.
Midway was not immediately interested in the home computer market, but the Nutting people managed to convince management to get DeFanti to port GRASS3 to the platform under contract. The idea was to build an external box that would be used with the existing console to turn it into a "real" computer, a system known as the ZGRASS-100. A number of people at the Habitat, as well as some from Nutting, worked on the project, adding a keyboard, memory, and additional connectors. A separate display chip created text, which was then mixed with the output from the display chip for the screen. Also included would be a new version of GRASS3, known as Zgrass.
At about the same time, another version of the same basic parts was built as the UV-1. In this case the machine was built as an all-in-one box, including the small amount of additional hardware needed to support the high-resolution mode of the Nutting chipset, which supplied 320 x 204 resolution with up to 8 colors per line. This mode required 16 KB for the display buffer alone, so the machine included 32 KB RAM and a larger 16 KB ROM with additional Zgrass commands in it. To this basic system the Habitat added high quality video output circuitry and a floppy disk interface.
Bally's intents for the UV-1 are not entirely clear. The November 1980 Byte magazine contains an article by DeFanti (et al.) that seems to suggest that the ZGRASS-100 was already "dead", and that the UV-1 was intended to be used for high-quality video output. Ad copy from the same era suggests that Bally intended to sell the UV-1 as a home computer, competing directly with the Apple II and similar machines. This makes the ZGRASS-100 somewhat unnecessary, so whether or not Bally intended to offer both remains a mystery. Either way, in 1980 Bally decided to exit the industry altogether, dropping both Z-Box projects, and the Astrocade too.
The final version of the Z-Box was the only one to be produced, as the UV-1R. This version was mounted in a rack mount case (thus the R) with considerably more RAM and a 32 KB ROM which contained the parts of CP/M that were needed to boot the machine, so a disk was no longer required. Much of the additional RAM, up to 256 KB of it, was dedicated as a RAM disk so the machines could be installed and left running for years – a floppy disk would burn out very quickly in this role. The additional RAM was not normally visible to the Z80 or the display hardware, but a new memory controller could switch in blocks of it so a number of screens could be cached if the disk needs were not that large.
Although Midway had already given up on the Astrocade, they later sold the rights to the design to a 3rd party, Astrovision. Some time in the mid-1980s Astrovision decided to release the original "add-under" version of the hardware, now known as the ZGRASS-32. It is unclear if any were sold.
The Aster CT-80, an early (1982) home/personal computer developed by the small Dutch company MCP, was sold in its first incarnation as a kit for hobbyists. Later it was sold ready to use. It consisted of several Eurocard PCB's with DIN 41612 connectors, and a backplane all based on a 19-inch rack configuration. It was the first commercially available Dutch personal/home computer. The Aster computer could use the software written for the popular Tandy TRS-80 computer while fixing many of the problems of that computer, but it could also run CP/M software, with a large amount of free memory Transient Program Area, (TPA) and a full 80×25 display, and it could be used as a Videotext terminal. Although the Aster was a clone of the TRS-80 Model I it was in fact more compatible with the TRS-80 Model III, and ran all the software of these systems including games. It also had a built in speaker which was compatible with such games software.
The Atari ST is a line of personal computers from Atari Corporation and the successor to the Atari 8-bit family. The initial model, the Atari 520ST, had limited release in April–June 1985 and was widely available in July. It was the first personal computer with a bitmapped color GUI, using a version of Digital Research's GEM from February 1985. The Atari 1040ST, released in 1986 with 1 MB of RAM, was the first home computer with a cost-per-kilobyte of less than US$1.
The Amstrad CPC is a series of 8-bit home computers produced by Amstrad between 1984 and 1990. It was designed to compete in the mid-1980s home computer market dominated by the Commodore 64 and the ZX Spectrum, where it successfully established itself primarily in the United Kingdom, France, Spain, and the German-speaking parts of Europe.
The Amiga 500, also known as the A500, is the first low-end version of the Amiga home computer. It contains the same Motorola 68000 as the Amiga 1000, as well as the same graphics and sound coprocessors, but is in a smaller case similar to that of the Commodore 128.
The Original Chip Set (OCS) is a chipset used in the earliest Commodore Amiga computers and defined the Amiga's graphics and sound capabilities. It was succeeded by the slightly improved Enhanced Chip Set (ECS) and greatly improved Advanced Graphics Architecture (AGA).
The Atari 8-bit family is a series of 8-bit home computers introduced by Atari, Inc. in 1979 with the Atari 400 and Atari 800. The series was successively upgraded to the Atari 1200XL, Atari 600XL, Atari 800XL, Atari 65XE, Atari 130XE, Atari 800XE, and Atari XEGS, the last discontinued in 1992. These all differ primarily in packaging, each based on the MOS Technology 6502 CPU at 1.79 MHz and the same custom coprocessor chips. As the first home computer architecture with coprocessors, it has graphics and sound more advanced than most contemporary machines. Video games were a major appeal, and first-person space combat simulator Star Raiders is considered the platform's killer app. The plug-and-play peripherals use the Atari SIO serial bus, with one developer eventually also co-patenting USB.
The Commodore 128, also known as the C128, C-128, C= 128, is the last 8-bit home computer that was commercially released by Commodore Business Machines (CBM). Introduced in January 1985 at the CES in Las Vegas, it appeared three years after its predecessor, the Commodore 64, the bestselling computer of the 1980s.
The Commodore PET is a line of personal computers produced starting in 1977 by Commodore International. A single all-in-one case combines a MOS Technology 6502 microprocessor, Commodore BASIC in read-only memory, keyboard, monochrome monitor, and, in early models, a cassette deck.
GRASS is a programming language created to script 2D vector graphics animations. GRASS was similar to BASIC in syntax, but added numerous instructions for specifying 2D object animation, including scaling, translation and rotation over time. These functions were directly supported by the Vector General 3D graphics terminal GRASS was written for. It quickly became a hit with the artistic community who were experimenting with the new medium of computer graphics, and is most famous for its use by Larry Cuba to create the original "attacking the Death Star will not be easy" animation in Star Wars (1977).
The BallyAstrocade is a second-generation home video game console and simple computer system designed by a team at Midway, at that time the videogame division of Bally. It was originally announced as the "Bally Home Library Computer" in October 1977 and initially made available for mail order in December 1977. But due to production delays, the units were first released to stores in April 1978 and its branding changed to "Bally Professional Arcade". It was marketed only for a limited time before Bally decided to exit the market. The rights were later picked up by a third-party company, who re-released it and sold it until around 1984. The Astrocade is particularly notable for its very powerful graphics capabilities for the time of release, and for the difficulty in accessing those capabilities.
The Sorcerer is a home computer system released in 1978 by the video game company Exidy, later under their Exidy Systems subsidiary. Based on the Zilog Z80 and the general layout of the emerging S-100 standard, the Sorcerer was comparatively advanced when released, especially when compared to the contemporary more commercially successful Commodore PET and TRS-80. The basic design was proposed by Paul Terrell, formerly of the Byte Shop, a pioneering computer store.
The SAM Coupé is an 8-bit British home computer manufactured by Miles Gordon Technology (MGT), based in Swansea in the United Kingdom and released in December 1989.
The Tandy 2000 is a personal computer introduced by Radio Shack in September 1983 based on the 8 MHz Intel 80186 microprocessor running MS-DOS. By comparison, the IBM PC XT used the older 4.77 MHz Intel 8088 processor, and the IBM PC/AT would later use the newer 6 MHz Intel 80286. Due to the 16-bit data bus and more efficient instruction decoding of the 80186, the Tandy 2000 ran significantly faster than other PC compatibles, and slightly faster than the PC AT. The Tandy 2000 was the company's first computer built around an Intel x86 series microprocessor; previous models used the Zilog Z80 and Motorola 6809 CPUs.
The Amstrad PC1512 was Amstrad's mostly IBM PC-compatible computer system, first manufactured in 1986. Next year a slight updated version named PC1640 was introduced. It was also marketed as PC6400, and Sinclair PC500. Schneider branded machines for the german marked also exist.
The Rainbow 100 is a microcomputer introduced by Digital Equipment Corporation (DEC) in 1982. This desktop unit had a monitor similar to the VT220 and a dual-CPU box with both 4 MHz Zilog Z80 and 4.81 MHz Intel 8088 CPUs. The Rainbow 100 was a triple-use machine: VT100 mode, 8-bit CP/M mode, and CP/M-86 or MS-DOS mode using the 8088. It ultimately failed to in the marketplace which became dominated by the simpler IBM PC and its clones which established the industry standard as compatibility with CP/M became less important than IBM PC compatibility. Writer David Ahl called it a disastrous foray into the personal computer market. The Rainbow was launched along with the similarly packaged DEC Professional and DECmate II which were also not successful. The failure of DEC to gain a significant foothold in the high-volume PC market would be the beginning of the end of the computer hardware industry in New England, as nearly all computer companies located there were focused on minicomputers for large organizations, from DEC to Data General, Wang, Prime, Computervision, Honeywell, and Symbolics Inc.
The Z-100 computer is a personal computer made by Zenith Data Systems (ZDS). It was a competitor to the IBM PC.
The LINK 480Z was an 8-bit microcomputer produced by Research Machines Limited in Oxford, England, during the early 1980s.
Kickstart is the bootstrap firmware of the Amiga computers developed by Commodore International. Its purpose is to initialize the Amiga hardware and core components of AmigaOS and then attempt to boot from a bootable volume, such as a floppy disk. Most Amiga models were shipped with the Kickstart firmware stored on ROM chips.
Oric was the name used by UK-based Tangerine Computer Systems for a series of 6502-based home computers sold in the 1980s, primarily in Europe.
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