TM11 DECmagtape system engineering drawings

This document provides a comprehensive set of engineering drawings for the TM11 DECmagtape system. It includes a master drawing list, interface schematics (Bus Cable Interface, Tape Unit Control, etc.), module utilization details, and maintenance information for the controller unit compatible with the PDP-11 architecture. The content is organized for engineering and maintenance purposes, detailing bus signaling, register selection, data buffer paths, and module-level circuit designs.