Extended Memory Control

This document describes the diagnostic program (MAINDEC-08-D1GD-D) used to test the extended memory control logic on PDP-8, PDP-8/I, and PDP-8/S computer systems. The program verifies that the processor can correctly reference extended memory fields, handle program interrupts, and perform auto-indexing. It also includes special tests to ensure that referencing a non-existent memory field results in a specific memory pulse. The document covers requirements, loading procedures, operator instructions, and provides a table of error halts for troubleshooting.