Analysis Of The Intel 386 And I486 Microprocessors For The Space Station Freedom Data Management System PDF Download
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Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 28 |
Release | : 2018-10-24 |
Genre | : Science |
ISBN | : 9781729173374 |
Download Analysis of the Intel 386 and I486 Microprocessors for the Space Station Freedom Data Management System Book in PDF, ePub and Kindle
The feasibility is analyzed of upgrading the Intel 386 microprocessor, which has been proposed as the baseline processor for the Space Station Freedom (SSF) Data Management System (DMS), to the more advanced i486 microprocessors. The items compared between the two processors include the instruction set architecture, power consumption, the MIL-STD-883C Class S (Space) qualification schedule, and performance. The advantages of the i486 over the 386 are (1) lower power consumption; and (2) higher floating point performance. The i486 on-chip cache does not have parity check or error detection and correction circuitry. The i486 with on-chip cache disabled, however, has lower integer performance than the 386 without cache, which is the current DMS design choice. Adding cache to the 386/386 DX memory hierachy appears to be the most beneficial change to the current DMS design at this time. Liu, Yuan-Kwei Ames Research Center RTOP 488-51-01
Author | : |
Publisher | : |
Total Pages | : 368 |
Release | : 1993 |
Genre | : Large space structures (Astronautics) |
ISBN | : |
Download Large Space Structures & Systems in the Space Station Era Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 336 |
Release | : 1992 |
Genre | : Large space structures (Astronautics) |
ISBN | : |
Download Large Space Structures & Systems in the Space Station Era Book in PDF, ePub and Kindle
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Publisher | : |
Total Pages | : 1460 |
Release | : 1991 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : |
Publisher | : |
Total Pages | : 76 |
Release | : 1992 |
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Download Space Station Freedom Data Management System Growth and Evolution Report Book in PDF, ePub and Kindle
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Total Pages | : 1208 |
Release | : 1991 |
Genre | : Science |
ISBN | : |
Download Government Reports Announcements & Index Book in PDF, ePub and Kindle
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Total Pages | : 336 |
Release | : 1992 |
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Download Large Space Structures and Systems in the Space Station Era: A Bibliography with Indexes (supplement 04) Book in PDF, ePub and Kindle
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Total Pages | : 1032 |
Release | : 1995 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
Author | : |
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Total Pages | : 368 |
Release | : 1993 |
Genre | : |
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Download Large Space Structures and Systems in the Space Station Era: A Bibliography with Indexes (supplement 05) Book in PDF, ePub and Kindle
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Total Pages | : 344 |
Release | : 1962 |
Genre | : Aeronautics |
ISBN | : |
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