Revise "Writing a simple operating system from scratch" round 2.

[yaobinwen]

TODOs

• [x] Chapter 1
• [x] Chapter 2
• [ ] Chapter 3
  • [x] 3.1 Boot Sector Re-visited
  • [x] 3.2 16-bit Real Mode
  • [x] 3.3 Erm, Hello?
  • [x] 3.3.1 Interrupts
  • [x] 3.3.2 CPU Registers
  • [x] 3.3.3 Putting it all Together
  • [x] 3.4 Hello, World!
  • [x] 3.4.1 Memory, Addresses, and Labels
  • [x] 3.4.2 'X' Marks the Spot
  • [x] 3.4.3 Defining Strings
  • [x] 3.4.4 Using the Stack
  • [x] 3.4.5 Control Structures
  • [x] 3.4.6 Calling Functions
  • [x] 3.4.7 Include Files
  • [x] 3.4.8 Putting it all Together
  • [x] 3.4.9 Summary
  • [x] 3.5 Nurse, Fetch me my Steth-o-scope
  • [x] 3.6 Reading the Disk
  • [x] 3.6.1 Extended Memory Access Using
  • [x] 3.6.2 How Disk Drives Work
  • [x] 3.6.3 Using BIOS to Read the Disk
  • [x] 3.6.4 Putting it all Together
  • [ ] Q5: TODO
• [x] Chapter 4
  • [ ] TODO: Extended topic, but maybe just add the reference to Wikipedia.
• [ ] Chapter 5
  • [x] Introduction
  • [ ] 5.1 Understanding C Compilation
  • [ ] 5.1.1 Generating Raw Machine Code
  • [ ] 5.1.2 Local Variables
  • [ ] 5.1.3 Calling Functions
  • [ ] 5.1.4 Pointers, Addresses, and Data
  • [ ] 5.2 Executing our Kernel Code
  • [ ] 5.2.1 Writing our Kernel
  • [ ] 5.2.2 Creating a Boot Sector to Bootstrap our Kernel
  • [ ] 5.2.3 Finding Our Way into the Kernel
  • [ ] 5.3 Automating Builds with Make
  • [ ] 5.3.1 Organising Our Operating System’s Code Base
  • [ ] 5.4 C Primer
  • [ ] 5.4.1 The Pre-processor and Directives
  • [ ] 5.4.2 Function Declarations and Header Files
• [ ] Chapter 6
• [x] Chapter 7
• [x] Chapter 8