Pdp-8, 8i, 8s Extended Memory Control

Summary

This document is a technical diagnostic manual for the PDP-8, 8I, and 8S Extended Memory Control. The program is designed to test the Extended Memory Control logic, specifically:

• Logic Verification: It exercises control IOTs, the ability to reference all memory fields from field 0, program interrupts, interrupt inhibit functions, and auto-indexing within each field.
• PDP-8I Specific Testing: It includes a specialized test for the PDP-8I to ensure it properly handles "false memory" pulses when a non-existent memory field is referenced.
• Error Reporting: The program is designed to halt upon encountering an error. These halts are documented in a comprehensive table that cross-references the program's location with the specific failure (e.g., CDF, RDF, RIB, or ION failures).
• Operational Procedures: The manual provides detailed instructions on how to load the diagnostic program using a binary loader, set switch registers for specific processor configurations, and interpret results.
• Support: It concludes with a complete assembly listing of the diagnostic program and a cross-referenced symbol table to assist maintenance personnel in troubleshooting.