RSX-11D Real-Time Operating System

This Software Product Description (SPD) outlines the RSX-11D real-time operating system for PDP-11 computers. Key features include event-driven multiprogramming, priority-based task scheduling, queued asynchronous I/O, and file system protection. The document provides detailed system configuration recommendations for both single and multi-user environments, along with a comprehensive list of supported hardware components, including processors, memory options, storage devices, terminals, and data acquisition peripherals. It also includes licensing information, software support categories, and update policies for the operating system.