KB11-A Central Processor Unit Engineering Drawings

This document provides a complete directory and collection of engineering schematics, flow diagrams, and drawing indices for the KB11-A Central Processor Unit, which served as the CPU for the PDP-11/45 16-bit computer. It includes:

• Drawing Directory and Indices: A comprehensive list of the print set, including module utilization, block diagrams, and flow diagrams.
• System Flow Diagrams: Detailed flow diagrams for instruction fetching, data path operations, and timing generation.
• Module Schematics: Wiring and circuitry schematics for key components, including the Timing Generator (TIG), IR Decode & Condition Codes (IRC), Data Paths (DAP), and Bus Terminals.
• Backplane and Support: Documentation for the wired assembly and logic frame support systems.
• Revision History: Records of engineering change orders (ECOs) and print set revisions.