KD11-A Processor

This maintenance manual provides a detailed technical overview and maintenance guide for the KD11-A Processor, a key component of the PDP-11/35 and PDP-11/40 systems. It covers the following key areas:

• Microprogramming: Explains the microprogrammed control logic, ROM structure, and microword format used to implement the PDP-11 instruction set.
• Block Diagram Description: Describes the interface, data paths, and microcontrol logic, including timing and synchronization with the Unibus.
• Flow Diagrams: Details the microprogram flow, including how to read the flow diagrams and examples for tracing instructions.
• Logic Diagram Description: Provides guidance on interpreting the provided logic and wiring diagrams for the KD11-A modules (K1-K5).
• Processor Options: Covers the installation and functional descriptions for the KJ11-A Stack Limit Register, KM11-A Maintenance Console, and KW11-L Line Frequency Clock.

The document is intended for technical personnel responsible for the maintenance and repair of these specific PDP-11 computer systems.