Robert W. Horst

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A major departure from traditional VO systems, TNet is a new system area network designed to s"pp0rt current and future needs for reliable, efficient communications among processors and peripherals. It is an extensible hardware-software layer that allows very large configurations by logically and physically isolating processor buses from VO buses. TNet(More)
This paper describes the architecture for issuing multiple instructions per clock in the NonStop Cyclone Processor. Pairs of instructions are fetched and decoded by a dual two-stage prefetch pipeline and passed to a dual six-stage pipeline for execution. Dynamic branch prediction is used to reduce branch penalties. A unique microcode routine for each pair(More)
Most microprocessor-based systems provide little or no checking for failures of the microprocessor itself. These systems rely on the high reliability of VLSI and the inherent run-time checks (e.g., virtual memory protection and illegal instruction exceptions) to ensure data integrity. The authors present a model for analyzing the vulnerability of systems to(More)
Self-similar traffic distributions have been observed in a wide range of networking applications and models such as LANs, WANs, telnet, FTP, WWW, ISDN, SS7 and VBR traffic over ATM. Therefore, it has been suggested that many other theoretical protocols and systems need to be reevalu-ated under this different type of traffic before practical implementations(More)