Arithmetic Processor 166 Instruction Manual Volume 1

This is Volume 1 of a two-volume instruction manual for the PDP-6 Arithmetic Processor Type 166. It is designed to assist personnel in the operation and maintenance of the processor and its common input-output devices, including the Paper Tape Reader Type 760, Paper Tape Punch Type 761, Teletype Keyboard-Printer Type 626, and Card Reader Type 461.

The manual covers a general description of the system, its functional characteristics, and operator controls. It details the system organization, instruction formats, main sequence control, and arithmetic logic, focusing on the logical understanding rather than intricate circuit hardware. A significant portion is dedicated to maintenance, encompassing operational procedures, maintenance programs, and preventive and corrective maintenance. Appendices containing engineering drawings, spares lists, and a glossary are located in Volume 2.