Job Data Area

This document describes the structure and usage of the Job Data Area, which consists of the first 140 locations of the user area in a PDP-10 environment. The area is used for communication and storage of items of interest to both the monitor and the user program. It includes definitions for symbols used for monitor-only purposes, user-accessible symbols, and parameter definitions. The document also details specific memory locations for storing hardware ACs, UUO trap locations, user error reporting, device assignment tables, and pointers for loaders and DDT.