Contents

• Introduction to Nachos
• Nachos Machine
  • Machine Components
  • Interrupt Management
  • Real-Time Clock Interrupts
  • Address Translation
    • Linear Page Tables
    • Software Managed TLB
  • Console Device
  • Disk Device
• Nachos Threads
  • Mechanics of Thread Switching
  • Threads & Scheduling
  • Synchronization and Mutual Exclusion
  • Special Notes
• User-Level Processes
  • Process Creation
  • Creating a Noff Binary
  • System Calls and Exception Handling
  • Execution Trace of User-Level Process
• Nachos Filesystem
  • SynchDisk
  • FileSystem Object
  • OpenFile Object
  • File System Physical Representation
    • File Header
    • Directories
    • Putting It All Together
• Experience With Nachos Assignments
  • General Tips
  • Synchronization
  • Multiprogramming
  • Virtual Memory
  • File System
  • Common Errors
• MIPS Architecture
• About this document ...