Thursday, December 6, 2007

IEEE Design & Test of Computers, Sep/Oct 2007


GALS Design and Validation
Globally asynchronous, locally synchronous design is practically a buzzword in industry today. The term GALS was first used in the work of Chapiro in his doctoral dissertation, "Globally-Asynchronous Locally-Synchronous Systems" (Dept. of Computer Science, Stanford Univ., 1984), in which he provided a solution using pausible-clock circuitry. Since then, the term has gained popularity in both academia and industry. However, the tools, verification techniques, and testing methodologies for asynchronous designs are not as widespread as for synchronous digital design, leading to the hitherto limited usage of GALS design approaches even after more than 20 years from Chapiro's introduction.

Cell Broadband Engine Debugging for Unknown Events
The architecture and design of debugging logic for high-speed processor chips is somewhat of an art, requiring the design of logic to isolate events that have not yet occurred. In fact, the goal is for such events never to occur, but history has shown that there are usually a few problems that need debugging.

The Psychology of Electronic Test
Mullainathan and Thaler define behavioral economics as "the combination of psychology and economics that investigates what happens in markets in which some of the agents display human limitations and complications."

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