| 翻訳と辞書 |
DEC Prism
Prism was a 32-bit RISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC). It was the final outcome of a number of DEC research projects from the 1982–1985 time-frame, and was at the point of delivering silicon in 1988 when the management canceled the project. The next year work on the Alpha started, based heavily on the Prism design.
==Background==
In the early 1980s DEC was a huge success, flush with cash and infused with a feeling of invincibility. Projects were started all over the company to chase the "next big thing", with little or no overall direction or managerial oversight. RISC computing was one of those next big things, and in the period from 1982 to 1985 no fewer than four attempts were made to create a RISC chip at different divisions.
Titan from DEC's Western Research Laboratory (WRL) in Palo Alto, California was a high-performance ECL based design that started in 1982, intended to run Unix. SAFE (''Streamlined Architecture for Fast Execution'') was a 64-bit design that started the same year, designed by Alan Kotok (of Spacewar! fame) and Dave Orbits and intended to run VMS. HR-32 (''Hudson, RISC, 32-bit'') started in 1984 by Rich Witek and Dan Dobberpuhl at the Hudson fab, intended to be used as a co-processor in VAX machine. The same year Dave Cutler started the CASCADE project at DECwest in Bellevue, Washington.
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「DEC Prism」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.
|
|