PDP-8, 8I, 8S Extended Memory Control

This document, labeled Maindec 08-D1GB-D, provides the identification, requirements, and operating procedures for a diagnostic program designed to test the Extended Memory Control logic on PDP-8, PDP-8I, and PDP-8S computer systems. The program ensures that the Extended Memory Control logic, IOTs, memory field references, and interrupt mechanisms (including auto-indexing and interrupt inhibit) are functioning correctly. The document includes detailed instructions for loading, starting, and operating the diagnostics, along with a comprehensive table of error halts and descriptions to assist in troubleshooting hardware issues.