1. Arithmetic Instructions
ICS312 Set 5
Arithmetic Instructions

2. Data Transfer Instructions MOV
   
MOV destination, source
destination operand can be register or memory operand.
source operand can be register, memory, or immediate operand.
source and destination operands cannot BOTH be memory operands.
Examples: mov cx, ax
mov account, 3

3. Arithmetic Instructions (ADD, SUB, INC, and DEC)
ADD and SUB Instructions
ADD destination, source
SUB destination, source
destination operand can be register or memory operand.
source operand can be register, memory operand, or immediate
source and destination operands cannot BOTH be memory operands.
INC and DEC Instructions
INC destination
DEC destination
Examples: inc ah
dec ebx
add number, 2

4. NEG Instruction NEG destination
destination operand can be register or memory operand.
Examples: neg di
Note:  Type Agreement of Operands
The operands of two-operand instructions must be of the same
type;
that is both operands must be bytes, words, or double words

5. Translation of High-Level Language to Assembly Language
Examples:  Translate the following high-level language statements to assembly language:
1.    B = A
MOV AX, A
MOV B, AX
2.    A = 5 - A
First method:
MOV CX, 5
SUB CX, A
MOV A, CX
Second method:
NEG A
ADD A, 5
3.    A = B - 2 * A
MOV DX, A
ADD DX, DX
NEG DX
ADD DX,B
MOV A,DX

6. Textbook Reading (Jones):
Section 4.1 Addition and Subtraction