Migrating an Application from OpenVMS VAX to OpenVMS Alpha

This manual provides comprehensive instructions and planning guidance for software engineers tasked with migrating applications from OpenVMS VAX to OpenVMS Alpha systems. It covers the two primary migration paths—recompiling source code and translating binary VAX images—and outlines the necessary considerations for architectural dependencies, such as data alignment, memory page sizes, and synchronization mechanisms. The document also includes a sample migration plan, strategies for resolving architectural incompatibilities, and detailed appendices for application evaluation.