Pdp8-e Memory Extension and Time Share Control Test

This document provides technical instructions for the "Memory Extension and Time Share Control Test" (MAINDEC-8E-01H8-D), a diagnostic program designed to verify the memory extension and time-sharing logic on a PDP-8/E computer.

Key highlights include:

• Requirements: The system must be a PDP-8/E equipped with the KM8-E option and at least 4K of extended memory.
• Operating Modes: The test covers two primary modes: "Time Share Enabled" (full testing) and "Time Share Disabled" (memory extension testing only).
• Operation: Users must set specific bits in the Switch Register (SR) to define the number of available extended memory fields and to control the execution flow.
• Error Indicators: The program signals errors via a "Halt" or "Jump to Self" state; users are instructed to reference the program listing for debugging.
• Verification: A successful test run is confirmed by a bell signal from the TTY (teletype) at the end of each pass.