PDP-10 Time-Sharing Monitor

This document contains a collection of eight technical memoranda regarding the PDP-10 Time-Sharing Monitor, originally published in January 1969. The memos cover critical system components and programming techniques, including:

• Priority Interrupt System: Utilization of the seven-channel priority interrupt structure for efficient I/O.
• Job Scheduling: Details on scheduling routines for both 10/40 (nonswapping) and 10/50 (swapping) configurations.
• Command Decoder: Operational overview and instructions for adding commands.
• Interrupt Routines: Functionality of the Arithmetic Processor (APR) and Clock (CLK) interrupt handlers.
• Programmed Operator Service: Handling of trapped op codes (UUOCON).
• System Initialization: Procedures for bootstrapping, restarts, and system parameters.
• Context Switching: Mechanisms for saving and restoring job states during scheduling.
• I/O Programming: Software links, buffer management, and device service routine operations.

The collection is designed to facilitate maintenance and understanding of the monitor's architecture.