Programmed Buffered Display Type 338

This document provides a comprehensive technical overview and programming reference for the Digital Equipment Corporation Type 338 Programmed Buffered Display. Key features described include high-speed point and vector plotting, automatic scissoring, and direct access to PDP-8 memory via the data break channel. The guide covers system architecture, instruction sets (including control and data state instructions), character generation (VC38 option), and interfacing capabilities, accompanied by programming examples and technical specifications for system registers and IOT operations.