Feb28 - CSE398: Network Systems Design Instructor: Dr....

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CSE398: Network Systems Design Instructor: Dr. Liang Cheng Department of Computer Science and Engineering Lehigh University February 23, 2005
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/23/05 Outline ± Recap ± Protocol software ± Hardware architecture ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/23/05 Outline ± Recap ± Hardware architecture for protocol processing ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/23/05 A Brief History of Computer Hardware ± 1940s ± Beginnings ± 1950s ± Consolidation on von Neumann architecture ± I/O controlled by CPU ± 1960s ± I/O becomes important ± Evolution of third generation architecture with interrupts
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/23/05 I/O Processing ± Low-end systems (e.g., microcontrollers) ± Dumb I/O interfaces ± CPU does all the work (polls devices) ± Single, shared memory ± Low cost, but low speed ± Mid-range systems (e.g., minicomputers) ± Single, shared memory ± I/O interfaces contain logic for transfer and status ± Operations: CPU starts device then resumes processing ± Device: transfers data to / from memory; interrupts when operation complete
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This note was uploaded on 08/06/2008 for the course CSE 398 taught by Professor Cheng during the Spring '05 term at Lehigh University .

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Feb28 - CSE398: Network Systems Design Instructor: Dr....

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