Readings in the text

• Irvine, Chapters 6, 7, 9, Section 8.5

Handouts

• Demos 8-16
• Boot sector handout
• Timer Diagram
• How Interrupts Work article

Topics

• General
  • Real Mode vs. Protected Mode
  • Memory space vs. I/O space
  • Talking to HW devices
  • Concept of Systems Programming and Systems Software
  • Three sides of an Operating System
• C programming
  • Arrays, pointers, structures, functions
  • Binary operations (and, or, xor, negate, shift)
  • Logical operations (and, or, not)
  • Command-line arguments
  • Console input and output
  • System calls (read, write, open, close, time)
• Mixing C and assembly
  • C calling conventions
  • Calling C functions from assembly
  • Calling assembly functions from C
  • Obtaining command-line arguments C-style
• Interrupts
  • Hardware interrupts (HW devices)
  • Software interrupts (OS/BIOS services)
  • Exceptions (errors)
  • Response to an interrupt
  • Role of the Interrupt Vector Table or Interrupt Descriptor Table
  • Purpose of Interrupt Service Routines
  • Concept of critical sections
  • Interrupt flag and enabling/disabling interrupts
  • Master and slave Programmable Interrupt Controllers
  • IRQ number vs. interrupt number
• Boot Loaders
  • Power-up process
  • Structure of a disk
  • Layout of a boot sector
  • Purpose of a boot loader
• Timer and Speaker
  • Programmable Interval Timer (3 channels)
  • Crystal oscillator and the magic number 1193182
  • Programming Timer and Speaker (ports 61h, 43h, 42h, 41h, 40h)
• Libraries
  • static
  • shared
  • dynamic
  • dl interface
• Other topics
  • File access
  • Bit manipulation instructions (and, or, xor, negate, shift, rotate)
  • Recursion in assembly
  • String instructions (movs, cmps, lods, scas, stos)