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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク SDS 9xx computers ： ウィキペディア英語版 SDS 9xx computers The SDS 9xx computers are a backward compatible line of transistorized computers produced by Scientific Data Systems in the 1960s and 70s. This line includes the SDS 910, SDS 920, SDS 925, SDS 930, SDS 940, and the SDS 945. The SDS 9300 is an extension of the 9xx architecture. The SDS 92 is an incompatible 12-bit system built using monolithic integrated circuits. The 910 and 920 were first shipped in August, 1962. The 9300 was announced in June, 1963. The 925 and 930 were announced in 1964.〔 The 940 was announced in 1965, and the 945 in 1968. ==General description== All systems are 24-bit single address machines. Programmer-accessible registers are A (accumulator), B (extension), X (index), and P (program counter—14 bits), plus an overflow indicator. The 9300 had three index registers X1 through X3 which could be used as base registers to allow access to memory above 16K words. The W and Y registers are used for input/output. Maximum address space is 214 or 16,384 words (16K) on the 910 and 920; The 9300, 930, and 940 support up to 32K, although the method of accessing additional memory varies. 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「SDS 9xx computers」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.