Answer to Question #254860 in Assembler for Fahad

Question

What are the data defining pseudocode in assembly language? Short question answer this for my assignment

Answer 1

Pseudo-op names start with a dot to distinguish them from machine instructions. Common use of pseudo-ops is to reserve storage areas for data and optionally initialize their contents to known values.

.data

The data pseudo op changes the current section to .data.

Defining Data

BYTE, SBYTE

8-bit unsigned integer; 8-bit signed integer

WORD, SWORD

16-bit unsigned & signed integer

DWORD, SDWORD

32-bit unsigned & signed integer

QWORD

64-bit integer

Example:

• Defining BYTE and SBYTE Data

Value1 BYTE 10

Value2 SBYTE -10

 

Defining Strings:

str1 BYTE "Enter your name", 0

 

var1 BYTE 20 DUP(0) ; 20 bytes, all equal to zero

 

Equal-Sign Directive

COUNT = 500

 

EQU Directive

counter EQU 10