Real-mode Software Architecture of 80386DX

1. Describe the internal architecture of 80386DX.
   • execution unit
   • segment unit
   • page unit
   • bus unit
   • prefetch unit
   • decode unit
2. Describe real-mode software architecture: registers, memory space size
3. Describe real-mode memory space and data organization.
   • aligned double-word, unaligned double-word
   • Draw data alignment in memory.
   • little endian, big endian
   • unsigned and signed integer
   • Convert 2's complement integer format among hexadecimal, decimal and binary.
   • BCD, ASCII, convert data to ASCII.
4. State segment registers and memory segmentation.
   • six internal segment register, 16-byte address boundary
5. Describe Instruction Pointer.
6. List general purpose data registers.
7. Describe pointer and index registers.
8. Describe flag register and typical flags.
9. State the generation of a real-mode memory address.
10. State the operation of stack.
11. Describe real-mode I/O address space.