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TMS9918A
VDP TMS9918A VDP TMS9918A VDP TMS9928A The TMS9918 is a video display controller (VDC) manufactured by Texas Instruments, in manuals referenced as 'Video Display Processor' (VDP) and introduced in 1979. The TMS9918 and its variants were used in the ColecoVision, CreatiVision, Memotech MTX, MSX, NABU Personal Computer, SG-1000/ SC-3000, Spectravideo SV-318, Spectravideo SV-328, Sord M5, Tatung Einstein, Texas Instruments TI-99/4, Casio PV-2000, Coleco Adam, Hanimex Pencil II, and Tomy Tutor. The TMS9918 generates both grid-based character graphics (used to display text or background images) and sprites used for moving foreground objects. The key features of this chip are, as highlighted on a 1980 presentation by Karl Guttag (one of the designers): *256 by 192 full color pixels per screen *15 different colors and/or shades * Non-interlaced color composite video output *Direct wiring to RAS/CAS type dynamic RAMS *Automatic refresh of dynamic RAMS *General 8-bit memo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TMS9918A 01
VDP TMS9918A VDP TMS9918A VDP TMS9928A The TMS9918 is a video display controller (VDC) manufactured by Texas Instruments Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globa ..., in manuals referenced as 'Video Display Processor' (VDP) and introduced in 1979. The TMS9918 and its variants were used in the ColecoVision, CreatiVision, Memotech MTX, MSX, NABU Network#Hardware, NABU Personal Computer, SG-1000/SC-3000, Spectravideo SV-318, Spectravideo SV-328, Sord M5, Tatung Einstein, Texas Instruments TI-99/4, Casio PV-1000#PV-2000, Casio PV-2000, Coleco Adam, Hanimex, Hanimex Pencil II, and Tomy Tutor. The TMS9918 generates both grid-based character graphics (used to display text or background images) and sprite (computer graphics), sprites used for moving foreground objects. The key fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TMS9918A 02
VDP TMS9918A VDP TMS9918A VDP TMS9928A The TMS9918 is a video display controller (VDC) manufactured by Texas Instruments, in manuals referenced as 'Video Display Processor' (VDP) and introduced in 1979. The TMS9918 and its variants were used in the ColecoVision, CreatiVision, Memotech MTX, MSX, NABU Personal Computer, SG-1000/SC-3000, Spectravideo SV-318, Spectravideo SV-328, Sord M5, Tatung Einstein, Texas Instruments TI-99/4, Casio PV-2000, Coleco Adam, Hanimex Pencil II, and Tomy Tutor. The TMS9918 generates both grid-based character graphics (used to display text or background images) and sprites used for moving foreground objects. The key features of this chip are, as highlighted on a 1980 presentation by Karl Guttag (one of the designers): *256 by 192 full color pixels per screen *15 different colors and/or shades * Non-interlaced color composite video output *Direct wiring to RAS/CAS type dynamic RAMS *Automatic refresh of dynamic RAMS *General 8-bit memory mappe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Instruments TI-99/4
The TI-99/4 and TI-99/4A are home computers released by Texas Instruments in 1979 and 1981, respectively. Based on the Texas Instruments TMS9900 microprocessor originally used in minicomputers, the TI-99/4 was the first 16-bit home computer. The associated video display controller provides color graphics and sprite support which were only comparable with those of the Atari 400 and 800 released a month after the TI-99/4. The calculator-style keyboard of the TI-99/4 was cited as a weak point, and TI's reliance on ROM cartridges and their practice of limiting developer information to select third parties resulted in a lack of software for the system. The TI-99/4A was released in June 1981 to address some of these issues with a simplified internal design, full-travel keyboard, improved graphics, and a unique expansion system. At half the price of the original model, sales picked up significantly and TI supported the 4A with peripherals, including a speech synthesizer and a "Perip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SC-3000
The is a home video game console manufactured by Sega. It was Sega's first entry into the home video game hardware business. Developed in response to a downturn in Arcade game, arcades starting in 1982, the SG-1000 was created on the advice of Hayao Nakayama, president of Sega's Japanese arm, and was released on July 15, 1983, the same day that Nintendo released the Nintendo Entertainment System, Family Computer in Japan. It also saw limited release in Australia and New Zealand. The SG-1000 was released in several forms, including the SC-3000 computer and the redesigned SG-1000 II released in 1984. The SG-1000 and the SC-3000 both support a library of 76 ROM cartridge games and 29 Sega Card, Sega My Card games. A third iteration of the console, the Sega Mark III, was released in 1985. It provided an improved custom video display processor over previous iterations and served as the basis for the Master System in 1986, Sega's first internationally released console. All SG-1000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SG-1000
The is a home video game console manufactured by Sega. It was Sega's first entry into the home video game hardware business. Developed in response to a downturn in arcades starting in 1982, the SG-1000 was created on the advice of Hayao Nakayama, president of Sega's Japanese arm, and was released on July 15, 1983, the same day that Nintendo released the Family Computer in Japan. It also saw limited release in Australia and New Zealand. The SG-1000 was released in several forms, including the SC-3000 computer and the redesigned SG-1000 II released in 1984. The SG-1000 and the SC-3000 both support a library of 76 ROM cartridge games and 29 Sega My Card games. A third iteration of the console, the Sega Mark III, was released in 1985. It provided an improved custom video display processor over previous iterations and served as the basis for the Master System in 1986, Sega's first internationally released console. All SG-1000 games are fully compatible with the Mark III and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NABU Network
The NABU Network (Natural Access to Bi-directional Utilities) was an early home computer system which was linked to a precursor of the World Wide Web, operating over cable TV. It operated from 1982 to 1985, primarily in Ottawa, Canada. Its functionality was then revolutionary, though it was not a commercial success. It has been called "The Internet — 10 years ahead of its time" (even though elements of the history of the internet predate it). Functionality Families, schools, or individuals would purchase a NABU Personal Computer, which would be connected via cable TV to NABU's servers. In addition to normal PC capabilities of the time, the computer could download software and information content through the cable feed and could upload primitive information back up to the servers. Applications included games, the programming language Logo, news/current events, and rudimentary PC banking/shopping. At its peak, approximately 100 applications were available. The NABU Network c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitmap
In computing, a bitmap is a mapping from some domain (for example, a range of integers) to bits. It is also called a bit array or bitmap index. As a noun, the term "bitmap" is very often used to refer to a particular bitmapping application: the pix-map, which refers to a map of pixels, where each one may store more than two colors, thus using more than one bit per pixel. In such a case, the domain in question is the array of pixels which constitute a digital graphic output device (a screen or monitor). In some contexts, the term ''bitmap'' implies one bit per pixel, whereas ''pixmap'' is used for images with multiple bits per pixel. A bitmap is a type of memory organization or image file format used to store digital images. The term ''bitmap'' comes from the computer programming terminology, meaning just a ''map of bits'', a spatially mapped array of bits. Now, along with ''pixmap'', it commonly refers to the similar concept of a spatially mapped array of pixels. Raster images ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon-gate
In semiconductor electronics fabrication technology, a self-aligned gate is a transistor manufacturing approach whereby the gate electrode of a MOSFET (metal–oxide–semiconductor field-effect transistor) is used as a mask for the doping of the source and drain regions. This technique ensures that the gate is naturally and precisely aligned to the edges of the source and drain. The use of self-aligned gates in MOS transistors is one of the key innovations that led to the large increase in computing power in the 1970s. Self-aligned gates are still used in most modern integrated circuit processes. Introduction IC construction Integrated circuits (ICs, or "chips") are produced in a multi-step process that builds up multiple layers on the surface of a disk of silicon known as a " wafer". Each layer is patterned by coating the wafer in photoresist and then exposing it to ultraviolet light being shone through a stencil-like "mask". Depending on the process, the photoresis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Memory Access
Direct memory access (DMA) is a feature of computer systems and allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). Without DMA, when the CPU is using programmed input/output, it is typically fully occupied for the entire duration of the read or write operation, and is thus unavailable to perform other work. With DMA, the CPU first initiates the transfer, then it does other operations while the transfer is in progress, and it finally receives an interrupt from the DMA controller (DMAC) when the operation is done. This feature is useful at any time that the CPU cannot keep up with the rate of data transfer, or when the CPU needs to perform work while waiting for a relatively slow I/O data transfer. Many hardware systems use DMA, including disk drive controllers, graphics cards, network cards and sound cards. DMA is also used for intra-chip data transfer in multi-core processors. Computers that have DMA channels can t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomy Tutor
The Tomy Tutor, originally sold in Japan as the and in the UK as the Grandstand Tutor, is a home computer produced by the Japanese toymaker Tomy. It is architecturally similar, but not identical, to the TI-99/4A, and uses a similar Texas Instruments TMS9900 16-bit CPU. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8-bit Computing
In computer architecture, 8-bit integers or other data units are those that are 8 bits wide (1 octet). Also, 8-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers or data buses of that size. Memory addresses (and thus address buses) for 8-bit CPUs are generally larger than 8-bit, usually 16-bit. 8-bit microcomputers are microcomputers that use 8-bit microprocessors. The term '8-bit' is also applied to the character sets that could be used on computers with 8-bit bytes, the best known being various forms of extended ASCII, including the ISO/IEC 8859 series of national character sets especially Latin 1 for English and Western European languages. The IBM System/360 introduced byte-addressable memory with 8-bit bytes, as opposed to bit-addressable or decimal digit-addressable or word-addressable memory, although its general-purpose registers were 32 bits wide, and addresses were contained in the lower 24 bits of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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