The DOS/Batch Handbook

This document is a comprehensive technical handbook for the Digital Equipment Corporation (DEC) PDP-11 DOS/BATCH Operating System, specifically Monitor Version V09, released in April 1974. It provides detailed information on the system's core concepts and capabilities, including monitor functions, input/output operations, data storage management, and memory allocation. The handbook covers a wide array of utility programs, such as the MACRO assembler, FORTRAN compiler and its object time system, the EDIT text editor, the LINK linker, the LIBR librarian, the ODT debugging program, and the PIP file utility package. Further sections describe specialized utilities like FILCOM (file compare), VERIFY (disk verification), FILDMP (file dump), EBASCI (EBCDIC conversion), ROLLIN (utility for disk/tape transfers), and DSKINT (disk initialization). The document serves as a complete reference, outlining operating procedures, command languages, programming conventions, hardware interfaces, and error messages, supported by various appendices with technical data.