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Introduction to Z80 Assembler
This guide is only intended as an introduction to the concepts and language of machine code and assembler - it doesn't give a complete examination of the instruction set nor does it attempt to deal with the particulars of any one Z80 system. However I will be covering that sort of stuff in my next Z80 article when I deal with the actual specific Spectrum stuff and some more of the instructions that are only useful in context.
preview: http://www.worldofspectrum.org   |

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Z80 - Factbites
Little facts about Z80. For example: * The Zilog Z80 is an 8-bit microprocessor designed and manufacted by Zilog from 1976 onwards. * The Z80 came about when Federico Faggin left Intel after working on the 8080, and by July 1976 Zilog had the Z80 on the market. * Nintendo's Game Boy and Game Boy Color handheld game systems used a Z80 clone made by Sharp Electronics, which had a slightly different instruction set.
preview: http://www.factbites.com   |

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Z80 / Zilog @ Wikipedia
The Zilog Z80 is an 8-bit microprocessor designed and sold by Zilog from July 1976 onwards. It was widely used both in desktop and embedded computer designs as well as for military purposes. The Z80 and its derivatives and clones make up one of the most commonly used CPU families of all time, and, along with the MOS Technology 6502 family, dominated the 8-bit microcomputer market from the late 1970s to the mid-1980s. Although Zilog made...
preview: http://en.wikipedia.org   |

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ZiLOG @ Answers.com
A family of 8-bit microprocessors from Zilog. The original Z80 chip was the successor to the Intel 8080 and was widely used in first-generation personal computers that used the CP/M operating system. Subsequent Z180, Z280 and Z380 chips have been widely used in embedded systems, and hundreds of millions of them have been shipped.
preview: http://www.answers.com   |

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Zilog Z80 8-Bit Microprocessor
The Z80 microprocessor is an 8 bit CPU with a 16 bit address bus capable of direct access of 64k of memory space. It has a language of 252 root instructions and with the reserved 4 bytes as prefixes, acceses an additional 308 instructions. The Z80 was modeled after the 8088 and contains the 78 - 8088 opcodes as a subset to it's language.
preview: http://www.ee.washington.edu   |