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