1. Lecture 2 Microprocessor Overview
Hong, You DGU

2. BIOS (Basic Input Output System)
Software
System Software : Operating System or Software to Run
Application Software : Software Used by End-Users such as Word-processor, Game, etc.
BIOS (Basic Input Output System) OS
Application Software
Hardware

3. Microprocessor Classification
RISC vs. CISC
Von Neumann vs. Havard Architecture

4. CISC Large number of instructions- typically over 200
Various addressing mode – 5 ~ 20 modes
Sometimes various length commands are supported

5. RISC Relatively fewer instructions and addressing modes
Memory access is limited to load and store.
Single cycle instruction can be supported.
Typically hardwired controller is used

6. Von Neumann Architecture
Program and data shares the same memory.
Typically CISC(Complex Instruction Set Computer) type
Intel x86 CPU
Address
Program
And
Data
Data

7. Havard Architecture Dedicated memory for instruction and data
Typically RISC(Reduced Instruction Set Computer) type
Motorola (Apple) and IBM PowerPC
Program
Data

8. Microprocessor History
제조회사
마이크로 프로세서
Intel
Pentium
PentiumDual
PentiumQuad
Motorola
PowerPC
TI 등
DSPs
ARM
Modern Microprocessor
Classical Microprocessor