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NEC V20
The NEC V20 (μPD70108) was a processor made by NEC that was a reverse-engineered, pin-compatible version of the Intel 8088 with an instruction set compatible with the Intel 80186. The V20 was introduced in 1982,〔http://pdadb.net/index.php?m=cpu&id=i70108&c=nec_v20〕 and the V30 debuted in 1983.〔http://translate.google.co.uk/translate?hl=en&sl=ja&u=http://www.shmj.or.jp/museum2010/exhibi703.htm〕〔(the V20 at CPU-World )〕 The chip featured much more than the 29,000 transistors of the simpler 8088 CPU, ran at 8 to 16 MHz and was around 30% faster (application dependent) than the 8088 at the same clock speed, primarily due to faster effective address calculation, along with faster loop counters, shift registers and multiplier. == Uses == NEC V20 was used in "turbo" versions of some PC clones such as Commodore PC compatible systems, Copam, and Tandy 1000 laptop series. It was also used in the Casio PV-S450 PDA and Hewlett-Packard's HP 95LX. Sony also produced this microprocessor under license from NEC as the V20H (Sony CXQ70108).
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「NEC V20」の詳細全文を読む
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