Alpha 21066 and Alpha 21066A Microprocessors

This document provides a comprehensive technical reference for the Alpha 21066 and 21066A microprocessors. It details the internal architecture, including instruction pipelines, cache organization, and load/store operations. The manual also covers privileged architecture library code (PALcode), internal processor registers, the onchip memory controller, and the I/O controller (IOC) with its PCI bus interface. Appendices detail the differences between the 21066 and 21066A models, provide internal and memory controller register summaries, and list technical support information.