Digital Technical Journal

This volume of the Digital Technical Journal (Vol. 2, No. 4, Fall 1990) is dedicated to the VAX 9000 series mainframe system. It includes articles on the design strategy and implementation of the VAX 9000 CPU architecture, detailed analyses of its high-performance semiconductor technology (ECL, custom chips, and STRAM), and the system's vector processing capabilities. Furthermore, the issue covers physical design aspects, specifically the High-Density Signal Carrier (HDSC) and multichip unit manufacturing, as well as system reliability and fault detection through the VAX 9000 Service Processor Unit and symptom-directed diagnosis strategies. The issue concludes with articles on the CAD tools used to design the system and the unique power system architecture.