Memory Configuration Restrictions

This Field Change Order (FCO) addresses memory configuration limitations in AlphaServer 8200 and 8400 systems where certain configurations caused an "Illegal memory configuration - booting disabled" error. The solution requires replacing existing E2056-CA/DA CPU modules with newer, specified revisions and ensuring the system console is updated to at least version V3.0-9. The document provides step-by-step instructions for performing this replacement, including shutting down the system, recording parameters, ensuring proper ESD protection, verifying the upgrade, and performing post-upgrade system configuration and tests.