PDP-11/44 Processor Maintenance Supplementary Listings

This document, "PDP-11/44 Processor Maintenance Supplementary Listings," is a technical manual providing detailed supplementary information for the maintenance of the PDP-11/44 processor. It is divided into three main sections:

1. PDP-11/44 MicroListing: This section contains a detailed listing of microcode or low-level hardware definitions, including revision history and combined 1144 and floating point field definitions. It presents alphanumeric codes and descriptive comments for various processor operations and data paths.

2. PDP-11/44 PROM/PLA Files: This section details the logical organization and control functions of the PDP-11/44 processor as implemented in its Programmable Read-Only Memory (PROM) and Programmable Logic Array (PLA) files. It describes the "FLATO Assembler Format" used, explaining how inputs, outputs, and their relationships are defined through constructs like BIND, DATAPATHS, and EQUATIONS using Boolean operators. Specific files for service decoding, branch decoding, single operand decoding, and ALU functions are described.

3. PDP-11/44 Wire List: This section provides a comprehensive list of physical wire connections for the 1144 backplane. It maps signal names (RUN NAME) to their corresponding physical pin locations (PIN NAME), serving as a crucial reference for hardware maintenance and troubleshooting.

Overall, the document offers in-depth, low-level technical data essential for understanding the internal logic, operational commands, and physical interconnections of the PDP-11/44 processor.