Robert W. Horst

Learn More
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)
  • Robert W Horst
  • 2009
This paper describes a wearable powered leg orthosis that includes a high-torque actuator, electronics, sensors, and embedded firmware. The device provides multiple modes of operation including automatic assistance, manual assistance, continuous passive motion and robotic therapy. Patients affected by neurological conditions including stroke, MS, and(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)
Active orthotic devices require actuators with high torque, a free movement mode, high efficiency, and small size and weight. The FlexCVA is a new type of actuator that addresses these requirements in a unique way. It provides continuously varying torque through the use of two belts alternately deflected by cams. The belts alternate in supplying output(More)