What is dword in assembly?

DWORD defines ‘size’ of the memory location used for move operation. In you example, you’d be moving 0000000Ah (4 bytes) into memory location ESP+18h. As 0Ah is immediate value its size cannot be determined without using DWORD , WORD , BYTE or other similar qualifier.

What are the data types in assembly language?

Assembly data types limits and examples

• BYTE – 8 bit unsigned integer.
• SBYTE – 8 bit signed integer.
• WORD – 16 bit unsigned integer.
• SWORD – 16 bit signed integer.
• DWORD – 32 bit unsigned integer.
• SDWORD – 32 bit signed integer.
• FWORD – 48 bit integer.
• QWORD – 64 bit integer.

What are different data types used in ALP assembly language programming?

Data types or Data sizes:

• byte – 8 bits.
• word – 16 bits.
• dword – 32 bits.
• qword – 64 bits.
• Real4 – 32 bit float.
• Real8 – 64 bit float.
• Real10 – 80 bit float.

How many bits is a sword?

The term SWORD is sometimes used to describe a 24-bit data type with the S prefix referring to sesqui.

Are there distinct data types in assembly language?

In Assembly language, there are no distinct data types like char,string,int,float,double,etc Instead there are very basic data types according to their sizes. They are:

What do data and code do in Assembly?

.data and .code are directives or segments which tells the assembler how to assemble code. data part holds all the variables and memory related things where as .code holds all the instructions and code which tells registers and processor what to do.

How to create a variable in assembly language?

To create variables in Assembly language, use one of the above data sizes and allocate memory for a variable. The general syntax is like this: For creating a variable of 32 bits:

What’s the difference between a dword and a word?

WORD is probably from some older code and usually meant 16-bits, while DWORD usually means 32-bits. If you are unsure you should check your code though, because they have to be defined somewhere. WORD stems from machine word which size was hardware dependent. Thanks for contributing an answer to Stack Overflow!