Test - 14L

This document provides a technical guide for "TEST-14L," a diagnostic program designed to test the PDP-14L computer system using a PDP-8 I/L computer.

Key features of the document include:

• Purpose: The program is used to perform comprehensive logic circuitry testing on the PDP-14L processor, including I-, O-, and S-Boxes. It can be run for a short duration for quick checks or a longer duration (approximately two hours) for a thorough system validation.
• Requirements: Testing requires a PDP-8 I/L computer, the M745 interface module, the PDP-14L unit, and specific cabling to tie the outputs of O-Boxes back to the inputs of I-Boxes.
• Operational Setup: The document details switch register settings (SR) that allow the user to control testing behavior, such as looping, halting on errors, printing error reports, and toggling between short or long test modes.
• Error Handling: The manual describes how the program communicates errors to the operator via specific error designators. It provides a comprehensive "Module Call" table that maps these error identifiers to specific hardware components (such as decoders, registers, and interface modules), assisting the technician in identifying and replacing faulty hardware.
• Test Descriptions: The final sections break down the individual test routines (Test 1 through Test 69), explaining their specific functions, such as verifying instruction execution (JMP, TRM, NOP, JFF), checking status words, and testing memory circuitry.