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Nintendo Entertainment System technical specifications : ウィキペディア英語版 | Nintendo Entertainment System technical specifications The technical specifications〔http://problemkaputt.de/everynes.htm〕 for the Nintendo Entertainment System describe the console's processor, memory, and other components. ==Central processing unit== (詳細はcentral processing unit (CPU), the NES uses an 8-bit microprocessor produced by Ricoh, based on a MOS Technology 6502 core. It incorporates custom sound hardware and a restricted DMA controller on-die. To avoid patent payments, the Ricoh CPU disabled the 6502's BCD (binary coded decimal) mode by removing several of the transistors necessary for enabling it. NTSC (North America, Japan, and Korea) versions of the console use the Ricoh 2A03 (or RP2A03), which runs at 1.79 MHz.〔(【引用サイトリンク】url=http://nocash.emubase.de/everynes.htm )〕 PAL (Europe, Australasia, and South Asia) versions of the console use the Ricoh 2A07 (or RP2A07), which is identical to the 2A03 except that it runs at a slower 1.66 MHz clock rate and has its sound hardware adjusted accordingly.〔(【引用サイトリンク】 url=http://www.rgame.nl/nesspecs_eng.html )〕
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「Nintendo Entertainment System technical specifications」の詳細全文を読む
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