The propagation of unknown (X) states has become a more urgent issue with the move toward billion-gate SoC designs. The sheer complexity and the common use of complex power management schemes increase the likelihood of an unknown ‘X’ state in the design translating into a functional bug in the final silicon. This article describes a methodology that enables design and verification engineers to focus on the X states that represent a real risk, and to set aside those that are artifacts of the design process. The goal is to reduce project time, particularly time spent in simulation, and overcome … Read More → "X-Verification Methodology for Both Designers and Verification Engineers"

Many of the arts and skills developed throughout the ages have credited much of their inspiration to muses and patron saints and gods and spirits. These other-worldly beings provided both inspiration and guidance as the artisans built up a vast cultural legacy going back millennia.

So… if there’s a muse for engineering, who would it be? The thing about engineering is that free flights of fancy are often not permitted. We’re constrained by the possible, in stark contrast to experimental artists and even pure scientists. In fact, it’s worse than that: we have to … Read More → "A Happier Muse"