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Words starting with zikav

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  • zika — Also called Zika fever, Zika disease, Zika virus disease. an illness caused by a chiefly mosquito-borne virus of the genus Flavivirus , typically characterized by mild fever, rash, and joint pain.
  • zika virus — a chiefly mosquito-borne virus of the genus Flavivirus that causes Zika, a mild illness.
  • zikr — dhikr.
  • zikkurat — Alternative spelling of ziggurat.
  • ziw — Zany Interactive Wrestling
  • zil — (games)   Zork Implementation Language. Language used by Infocom's Interactive Fiction adventure games. Interpreted by the zmachine, for Unix and Amiga.
  • zilog — (company)   The microprocessor manufacturer who produced the Zilog Z80 in July 1976 (as used by Sinclair in the ZX-80, ZX-81 and ZX Spectrum computers) and later the Zilog Z8000. Zilog was founded in 1974 and became a wholly owned subsidiary of Exxon Corp. by 1980. The company's management and employees purchased Zilog back from Exxon in 1989. Zilog became a publicly-held company in February, 1991. In March of 1998, Zilog was privatised, as a result of the merger and recapitalisation transaction by Texas Pacific Group (TPG). Zilog now produce a range of 8-bit microcontrollers, 8-, 16- and 32-bit microprocessors, and digital signal processors, covering the home entertainment, communications, and embedded systems markets. Address: 910 East Hamilton Avenue, Suite 110, Campbell, CA 95008, USA.
  • zilog z280 — An enhanced version of the Zilog Z80 with a 16 bit architecture, introduced in July, 1987. It added an MMU to expand addressing to 16Mb, features for multitasking, a 256 byte cache, and a huge number of new op codes (giving a total of over 2000!). Its internal clock runs at 2 or 4 times the external clock (e.g. a 16MHz CPU with a 4MHz bus).
  • zilog z8 — (processor)   A family of microcontrollers from Zilog with on-chip RAM and ROM. The Z8 is not related to the Zilog Z80, it uses a totally different architecture and instruction set. Competitors include the Motorola 6805/68HC05 family or the Intel 8051-family (or i51-family or MCS51-family - there is no standard family name).
  • zilog z80 — (processor)   An 8-bit microprocessor. It was released in July 1976 with a 2.5 MHz clock rate. The Z80 was a much improved Intel 8080 (as was the Intel 8085). It also used 8-bit data and 16-bit addressing, and could execute all of the 8080 op codes as well as 80 new ones, instructions that included 1, 4, 8 and 16-bit operations and even block move and block I/O instructions. The register set was doubled, with two banks of registers (including A and F) that could be switched between. This allowed fast operating system or interrupt context switches. It features 3 types of interrupt mode. The Z80 also added two index registers (IX and IY) and relocatable vectored interrupts (via the 8-bit IV register). Like many processors (including the 8085), the Z80 featured many undocumented op codes. Chip area near the edge was used for added instructions, but fabrication made the failure of these high. Instructions that often failed were just not documented, increasing chip yield. Later fabrication made these more reliable. The thing that really made the Z80 popular was the memory interface - the CPU generated it's own RAM refresh signals, which meant easier design and lower system cost. That and its 8080 compatibility and CP/M, the first standard microprocessor operating system, made it the first choice of many systems. In addition to the original Z80 (2.5 MHz) there are the Zilog Z80A (4 MHz), Zilog Z80B (6MHz) and Zilog Z80H (8 MHz) versions. The popular Hitachi HD64180 processor family adds peripherals and an MMU to the Z80. The Zilog Z280 was an enhanced version with an MMU and many new op codes. The Z80 was used in the first Nintendo Game Boy. A Sharp Z80 work-alike was used in the GameBoy Color, running at 4 MHz for GameBoy software or at 8 MHz for Game Boy Color software. The Z80 was used in the Sega Master System and the Game Gear. It was also used in the Sega Genesis for hardware reverse compatibility with the Sega Master System through a special cartridge.