KDA50-Q Disk Controller

This document is a user guide for the KDA50-Q disk controller. It details the hardware components, including the SDI (M7165) and processor (M7164) modules, and explains the controller's use of the Digital Storage Architecture (DSA) and Mass Storage Control Protocol (MSCP). The guide provides comprehensive installation procedures for various CPU packages, including module preparation, intermodule cable installation, bulkhead installation, and field acceptance testing. It also covers QBUS tuning considerations, drive numbering, and related Digital service options.