This document provides quick-reference maintenance information for the PDP-11/44 computer system. It includes instructions for console commands, operational modes, and control characters. It details the module layout in the KD11-Z processor backplane, provides power-up and boot flow diagrams, and lists crucial register addresses for the CPU, I/O devices, memory management, and cache. Additionally, it lists the sequence of MAINDEC diagnostics, configuration settings for various modules (CIM M7090, CIS M7091/M7092, MFM M7096, Cache M7097, UBI M7098, MS11-M M8722), and power supply specifications for the H7140 unit.
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