RK8-E Disk Drive Controller

This document provides technical information regarding the RK8-E Disk Drive Controller, which serves as the interface between the PDP-8/E OMNIBUS and the RK05 Disk Drive. It details the system's functional capabilities, including IOT instruction decoding, data buffering, and CRC parity checking. The manual includes a physical description of the quad modules (M7104, M7105, M7106), mechanical specifications for the RK05 drive, and an explanation of the double frequency recording method used to manage data storage.