OS/78 Operating System

This document serves as the user's guide for the OS/78 V3 operating system designed for Digital Equipment Corporation's DECstation 78 and 88 minicomputer systems. It provides comprehensive instructions on system operations, including command usage, the OS/78 Editor, PAL8 symbolic assembly language, and support for high-level languages like BASIC and FORTRAN IV. Additionally, it contains guidance on using BATCH processing, the ODT debugging program, and reference information for experienced users regarding device handlers, system utilities, and error messages.