Introduction Once upon a time1, one single processor filled five whole rooms, one per pipeline stage. Myriad pinballs flooded through the processor and (so I’ve been told) you could chase them from one stage to another to see its machinations in action. The pinballs clicked, clacked, and crunched through gates and slammed into the maws … Continue reading The Sentry Branch Predictor Spec: A Fairy Tale by John Chu