1. Assembly Language Lecture 0: Introduction

2. Outline What is Assembly Language? Why learn Assembly Language? Grade Text Book

3. What is Assembly Language? Basic Microcomputer Design Instruction Execution Cycle Machine Language Assembly Language High-Level Language

4. Basic Microcomputer Design clock synchronizes CPU operations control unit (CU) coordinates sequence of execution steps ALU performs arithmetic and bitwise processing

5. Instruction Execution Cycle Fetch Decode Fetch operands Execute Store output

6. Machine Language A100000000  move the value at memory address 00000000 to eax 83C004  eax=eax+04 BB00000003  move 00000003 to ebx F7EB  eax=ebx*eax A300000004  move the value at eax to memory address 00000004 to eax

7. Assembly Language mov eax, Y // Y’s memory address: 00000000 add eax, 4 mov ebx, 3 imul ebx mov X,eax // X’s memory address: 00000004

8. High-Level Language X = (Y + 4) * 3;

9. Why learn Assembly Language?

10. Grade Midterm: 30% Final: 30% Program Assignment: 40%

11. Text Book k.R. Irvine, "Assembly Language for Intel- Based Computers", 4th Ed., Prentice Hall, 2003. L. Beck, "System Software“, 3rd Ed., Addison Wesley Longman, 1997.