VR12 Display Test

This document contains the source code and operational instructions for the Maindec 12-D6BA-D(P) diagnostic program, designed for the PDP-12 display system. The document outlines:

• Requirements: PDP-12A or PDP-12B equipment.
• Loading/Method: Procedures for mounting the DIAL tape and initiating the test via the ASR console.
• Operation: How the program displays test patterns on the scope, including a point display, a cross for calibration, and a character display pattern.
• Source Code: Full assembly language listing of the test program.