This document discusses the MOV instruction in assembly language. It can move data between registers and memory locations. The MOV instruction allows copying data from one location to another, whether that be between registers, from a register to memory, or from an immediate value to a register. An example is provided that copies values between registers to demonstrate how the MOV instruction functions.

1. MOV instruction
University of Duhok,
Computer Science Dept.

2. MOV destination,source
16-bit , 16-bit
8-bit , 8-bit
Register
[ Memory ]
Register
[ Memory ]
Immediate
By: Jawaher A. Fadhil Computer Science Dept.

3. Example#1
MOV AX,5FFh
MOV CX,AX
MOV BL,AH
MOV AL,00
MOV BH,0E
MOV AH,BH
MOV CX,AX
AX= 05 FF
CX= 05 FF
BX= 05XX
AX= 05 00
BX= 0E 05
AX= 0E 00
CX= 0E 00
Department of Computer ScienceBy: Jawaher A. Fadhil Computer Science Dept.

4. By: Jawaher A. Fadhil Computer Science Dept.
https://www.youtube.com/watch?v=w44iSpLJDgw

5. By: Jawaher A. Fadhil Computer Science Dept.

6. By: Jawaher A. Fadhil Computer Science Dept.

7. Assignment#1
What is the value of DX, BX registers after executing the
following instructions?
MOV DX,2670
MOV BX,92
MOV DL,BH
MOV DL,8A
MOV BX,DX
MOV BH,0C
MOV DL,9
Department of Computer Science
DX BX

8. Assignment#1
Write an assembly program to swap the content of AX=5F3H
with CX= 1940H registers? using MOV instruction only?
Department of Computer Science