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MC6847
The MC6847 is a video display generator (VDG) first introduced by Motorola and used in the TRS-80 Color Computer, Dragon 32/64, Laser 200, TRS-80 MC-10/Matra Alice, NEC PC-6000 series, Acorn Atom, and the APF Imagination Machine, among others. It is a relatively simple display generator compared to other display chips of the time. It is capable of displaying alphanumeric text, semigraphics and raster graphics contained within a roughly square display matrix 256 pixels wide by 192 lines high. The ROM includes a 5 x 7 pixel font, compatible with 6-bit ASCII. Effects such as inverse video or colored text (green on dark green; orange on dark orange) are possible. It is capable of displaying nine colors: black, green, yellow, blue, red, buff (almost-but-not-quite white), cyan, magenta, and orange (two extra colors, dark green and dark orange, are only possible as backgrounds for alphanumeric text modes). According to the MC6847 datasheet, the colors are formed by the combination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mc6847
The MC6847 is a video display generator (VDG) first introduced by Motorola and used in the TRS-80 Color Computer, Dragon 32/64, Laser 200, TRS-80 MC-10/Matra Alice, NEC PC-6000 series, Acorn Atom, and the APF Imagination Machine, among others. It is a relatively simple display generator compared to other display chips of the time. It is capable of displaying alphanumeric text, semigraphics and raster graphics contained within a roughly square display matrix 256 pixels wide by 192 lines high. The ROM includes a 5 x 7 pixel font, compatible with 6-bit ASCII. Effects such as inverse video or colored text (green on dark green; orange on dark orange) are possible. It is capable of displaying nine colors: black, green, yellow, blue, red, buff (almost-but-not-quite white), cyan, magenta, and orange (two extra colors, dark green and dark orange, are only possible as backgrounds for alphanumeric text modes). According to the MC6847 datasheet, the colors are formed by the combination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRS-80 Color Computer
The RadioShack TRS-80 Color Computer, later marketed as the Tandy Color Computer and sometimes nicknamed the CoCo, is a line of home computers developed and sold by Tandy Corporation. Despite sharing a name with the earlier TRS-80, the Color Computer is a completely different, incompatible system and a radical departure in design and compatibility with its Motorola 6809E processor rather than the Zilog Z80 earlier models were built around. The Tandy Color Computer line started in 1980 with what is now called the Color Computer 1. It was followed by the Color Computer 2 in 1983, then the Color Computer 3 in 1986. All three models maintain a high level of software and hardware compatibility, with few programs written for an older model being unable to run on the newer ones. The Color Computer 3 was discontinued in 1991. All Color Computer models shipped with Color BASIC, an implementation of Microsoft BASIC, in ROM. Variants of the OS-9 multitasking operating system were availab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Computer
The RadioShack TRS-80 Color Computer, later marketed as the Tandy Color Computer and sometimes nicknamed the CoCo, is a line of home computers developed and sold by Tandy Corporation. Despite sharing a name with the earlier TRS-80, the Color Computer is a completely different, incompatible system and a radical departure in design and compatibility with its Motorola 6809E processor rather than the Zilog Z80 earlier models were built around. The Tandy Color Computer line started in 1980 with what is now called the Color Computer 1. It was followed by the Color Computer 2 in 1983, then the Color Computer 3 in 1986. All three models maintain a high level of software and hardware compatibility, with few programs written for an older model being unable to run on the newer ones. The Color Computer 3 was discontinued in 1991. All Color Computer models shipped with Color BASIC, an implementation of Microsoft BASIC, in ROM. Variants of the OS-9 multitasking operating system were availabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Home Computers By Video Hardware
This is a list of home computers, sorted alphanumerically, which lists all relevant details of their video hardware. Home computers are the second generation of desktop computers, entering the market in 1977 and becoming common during the 1980s. A decade later they were generally replaced by IBM PC compatible "PCs", although technically home computers are also classified as personal computers. Examples of typical early home computers are the TRS-80, Atari 400/800, BBC Micro, the ZX Spectrum, the MSX 1, the Amstrad CPC 464 and the Commodore 64. Examples of typical late home computers are MSX 2 systems, and the Amiga and Atari ST systems. Note: in cases of manufacturers who have made both home and personal computers, only machines fitting into the ''home'' computer category are listed. Systems in the personal computer category, except for Early Macintosh PCs, are generally based on the VGA standard and use a video chip known as a Graphics Processing Unit. Very early PCs used on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragon 32/64
The Dragon 32 and Dragon 64 are home computers that were built in the 1980s. The Dragons are very similar to the TRS-80 Color Computer, and were produced for the European market by Dragon Data, Ltd., initially in Swansea, Wales before moving to Port Talbot, Wales (until 1984) and by Eurohard S.A. in Casar de Cáceres, Spain (from 1984 to 1987), and for the US market by Tano of New Orleans, Louisiana. The model numbers reflect the primary difference between the two machines, which have 32 and 64 kilobytes of RAM, respectively. Product history Dragon Data entered the market in August 1982 with the Dragon 32. The Dragon 64 followed a year later. The computers sold well initially and attracted the interest of independent software developers including Microdeal. A companion magazine, ''Dragon User'', began publication shortly after the microcomputer's launch. Despite this initial success, there were two technical impediments to the Dragon's acceptance. The graphics capabilitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRS-80 MC-10
The TRS-80 MC-10 microcomputer is a lesser-known member of the TRS-80 line of home computers, produced by Tandy Corporation in the early 1980s and sold through their RadioShack chain of electronics stores. It was a low-cost alternative to Tandy's own TRS-80 Color Computer to compete with entry-level machines such as the VIC-20 and Sinclair ZX81. The MC-10 was of value primarily to hobbyists and as an introduction to computer programming. It was not a commercial success and was discontinued only a year after its introduction. Description About the size of a hardcover book, the MC-10 has four kilobytes (4096 bytes) of RAM, a Motorola MC6803 eight-bit microprocessor, a built-in serial port, and graphics capabilities similar to those of the original Color Computer (provided by the same MC6847 video display generator). The MC-10 includes a BASIC interpreter in ROM and uses regular audio cassettes for bulk storage. Text and graphics are displayed on a television set via a buil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acorn Atom
The Acorn Atom is a home computer made by Acorn Computers Ltd from 1980 to 1982, when it was replaced by the BBC Micro. The Micro began life as an upgrade to the Atom, originally known as the Proton. The Atom was a progression of the MOS Technology 6502-based machines that the company had been making from 1979. The Atom was a cut-down Acorn System 3 without a disk drive but with an integral keyboard and cassette tape interface, sold in either kit or complete form. In 1980 it was priced between £120 in kit form, £170 () ready assembled, to over £200 for the fully expanded version with 12 KB of RAM and the floating-point extension ROM. Hardware The minimum Atom had 2 KB of RAM and 8 KB of ROM, with the maximum specification machine having 12 KB of each. An additional floating-point ROM was also available. The 2 KB of RAM was divided between 1 KB of Block Zero RAM (including the 256 bytes of " zero page") and 512 bytes for the screen (text ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APF Imagination Machine
The APF Imagination Machine is a combination home video game console and home computer system released by APF Electronics Inc. in late 1979. It has two separate components, the APF-M1000 game system, and an add-on docking bay with full sized typewriter keyboard and tape drive. The APF-M1000 was built specifically to compete with the Atari 2600. The full APF Imagination Machine, including the APF-M1000 console and the IM-1 computer component, originally sold for around (). Specifications *CPU: 8-bit 0.89 MHz Motorola 6800 (3.579 MHz Oscillator divided by 4) *ROM: 14 KB *RAM: 9 KB expandable to 17 KB (8 KB / 16 KB + 1 KB) *Video Display Controller: MC6847 *Resolutions: 256×192×4 / 128×192×8 *Colors: 8 *One sound channel in 5 octaves *Two controllers: **13 buttons ***0-9 numeric keypad ***Clear and End key ***Trigger **4-way joystick Overview APF Basic The bundled APF BASIC interpreter allows any users to develop their own programs. Most retailers of the system offer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphics Chips
A video display controller or VDC (also called a display engine or display interface) is an integrated circuit which is the main component in a video-signal generator, a device responsible for the production of a TV video signal in a computing or game system. Some VDCs also generate an audio signal, but that is not their main function. VDCs were used in the home computers of the 1980s and also in some early video picture systems. The VDC is the main component of the video signal generator logic, responsible for generating the timing of video signals such as the horizontal and vertical synchronization signals and the blanking interval signal. Sometimes other supporting chips were necessary to build a complete system, such as RAM to hold pixel data, ROM to hold character fonts, or some discrete logic such as shift registers. Most often the VDC chip is completely integrated in the logic of the main computer system, (its video RAM appears in the memory map of the main CPU) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser 200
The VTech Laser 200 is an 8-bit home computer from 1983, also sold as the Salora Fellow (mainly in Fennoscandia, particularly Finland), the Seltron 200 in Hungary and Italy, the Smart-Alec Jr. by Dynasty Computer Corporation in Dallas, Texas for the USA, the Texet TX8000A (in the United Kingdom), and the Dick Smith VZ 200 (in Australia and New Zealand) and the VTech VZ 200 (in the United States and Canada). Video Technology manufactured calculators and LCD pad game toys (similar to Nintendo Game & Watch) at a rather claustrophobic multi-storey factory in Hong Kong. The VZ200 is a development of an earlier monochrome TRS-80 copy, and is similar to the EACA Colour Genie and the Mattel Aquarius. The machine ran basic games on cassette such as ''Hoppy'' (a version of ''Frogger''), ''Cosmic Rescue'' (''Scramble''), ''VZ Invaders'' (''Space Invaders''), ''Dawn Patrol'' ('' Chopper'') and ''Moon Patrol''. The Laser 200/210 and VZ200 computers were discontinued in 1985 being re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC-6000 Series
The NEC PC-6000 series is a series of 8-bit home computers introduced in November 1981 by NEC Home Electronics. There are several models in this series, such as the PC-6001, the PC-6001 MK2 and the PC-6001 MK2 SR. There is also an American version, called the NEC TREK, or NEC PC-6001A. It was followed by the PC-6600 series. Several peripherals were available for the system in North America, including an expander with three cartridge jacks (some of the cartridge-based games used two cartridges), a cassette-tape recorder, a 5.25" floppy disk drive, a printer, and a touchpad. Development was a subsidiary of NEC and a manufacturer of consumer electronics. They started manufacturing the PC-8001 and its peripherals which were developed by the Electronic Devices Group of Nippon Electric. It was successful and grew the personal computer market in Japan. They started developing a low-cost home computer, and it became the PC-6001. At the same time, the Electronic Devices Group develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Spaces
A color space is a specific organization of colors. In combination with color profiling supported by various physical devices, it supports reproducible representations of colorwhether such representation entails an analog or a digital representation. A color space may be arbitrary, i.e. with physically realized colors assigned to a set of physical color swatches with corresponding assigned color names (including discrete numbers infor examplethe Pantone collection), or structured with mathematical rigor (as with the NCS System, Adobe RGB and sRGB). A "color space" is a useful conceptual tool for understanding the color capabilities of a particular device or digital file. When trying to reproduce color on another device, color spaces can show whether shadow/highlight detail and color saturation can be retained, and by how much either will be compromised. A "color model" is an abstract mathematical model describing the way colors can be represented as tuples of numbers (e.g. t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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