Once Only Code - Operator Dialogue And Service Rout. Linkage

This document is an assembly language listing for an "Input/Output Initialization" (IOINIT) routine, designed for system startup and configuration. It details the initialization of priority channels and interrupt service routines, memory management for system components and symbol tables, and applying system patches. A significant part of the code facilitates operator dialogue, guiding the user through setting the system date and time, configuring I/O devices, and deciding on the inclusion of system utilities like SYSMAK and the EXEC debugger. The document also includes fundamental console input/output routines for reading and typing lines, along with a comprehensive symbol table, all contributing to the proper linkage and setup of the operating environment.