Decus Program Library

This document serves as an addendum to the June 1966 collection of program abstracts for the Digital Equipment Computer Users Society (DECUS). It provides an index and detailed descriptions of various software routines and utility packages available for Digital Equipment Corporation's PDP-1, PDP-4, PDP-5, PDP-7, and PDP-8 computer systems.

The programs categorized include:

• Executive Routines, Assemblers, and Compilers: Tools for system control and program development.
• Editors: Text and tape editing utilities.
• Debuggers: Systems for examining and modifying programs during execution.
• Punch and Loaders: Utilities for binary tape input/output and system bootstrapping.
• Arithmetic and Numerical Routines: Functions for floating-point math, matrix operations, and base conversions.
• Displays and Hardware Control: Drivers for oscilloscopes, plotters, and magnetic tape systems.
• Special Applications: Tools for statistics, business applications, games, and hardware maintenance.

The document also details specific updates and additions to the software library, including operational instructions for new routines like the "ERC Boot," improvements to the "OPAK" debugger for the PDP-5, and refinements to the "PAL III" assembler for the PDP-8.