DECstation 5000/200 KN02 System Module

This document is the functional specification for the KN02 system module, which serves as the core processor board for Digital Equipment Corporation's DS5000/200 workstations and servers. It covers the module's architecture, including its MIPS R3000 CPU, memory subsystem with ECC protection, TURBOchannel I/O bus, Ethernet, and SCSI interfaces. Additionally, it details the system interface, including registers for control, status, real-time clock (RTC), and serial I/O (DZ), along with power requirements and interrupt management.