Privileged Operations

This document, Chapter 6 of the ETOS system documentation, describes privileged operations, commands, and functions available to system managers and privileged users. It covers topics including:

• Privileged Commands: Instructions for the PRIV command (privilege management, priority, and quantum control), PEEK/POKE (memory access), BROADCAST, FORCE/ECROF, MOUNT/DISMOUNT (for disks), and SHUTUP.
• Privileged SYSCAL Functions: Advanced system calls for memory management (LOCK, UNLOCK) and interrupt handling (HOOK, UNHOOK).
• Device Handlers: Procedures for changing and managing device handlers under stand-alone and virtual OS/8 environments, including considerations for specific hardware like DECtape, floppy disks, and high-speed reader/punch devices.
• Automation: Techniques for automating system startup, including automatic login and batch processing.
• Spooling: Configuration and management of terminal and line printer spoolers.
• Statistics: Using the USAGE program to track job run-time and connect-time.
• Real-Time Programming: An introduction to ETOS real-time task support, including sample programs and explanations of monitor architecture and scheduling.