VAX/VMS Virtual Memory and Address Space Fundamentals

Understanding how operating systems manage physical memory through abstraction is a cornerstone of computer science. This text-based course guides you through the foundational architecture of the VAX/VMS virtual memory system, showing you how classic design choices still shape modern computing. By reading and analyzing these core concepts, you will build a solid mental model of address spaces, page tables, and memory protection mechanisms. You will transition from seeing memory as a simple array of bytes to understanding how operating systems efficiently map, isolate, and secure system resources. What you'll learn: - Understand the core terminology of virtual and physical address spaces - Map how the kernel manages memory translation and page tables - Analyze memory protection mechanisms and privilege rings that prevent unauthorized access - Compare classic memory management with modern page table structures and Translation Lookaside Buffers (TLBs) - Examine how virtual memory concepts apply to modern containerization and process isolation - Practice conceptual exercises to trace address translation step-by-step You will begin with basic definitions of physical and virtual memory, progress through the specific VAX/VMS architecture, and finish by comparing these classic principles to modern system designs. This course is designed for beginner computer science students, aspiring systems programmers, and technology enthusiasts who want to learn memory management from the ground up, with no advanced prerequisites required. Start reading today to master the underlying mechanics of operating system memory.