Assembly

In this guide, we will discuss MOVS Instruction in Assembly Programming Language. The MOVS instruction is used to copy a data item (byte, word or doubleword) from the source string…

In this guide, we will discuss Strings in Assembly Programming Language. We have already used variable length strings in our previous examples. The variable length strings can have as many…

In this guide, we will discuss Numbers in Assembly Programming Language. Numerical data is generally represented in binary system. Arithmetic instructions operate on binary data. When numbers are displayed on…

In this guide, we will discuss Loops in Assembly Programming Language. The JMP instruction can be used for implementing loops. For example, the following code snippet can be used for…

In this guide, we will discuss Conditions in Assembly Programming Language. Conditional execution in assembly language is accomplished by several looping and branching instructions. These instructions can change the flow…

In this guide, we will discuss Logical Instructions in Assembly programming Language. The processor instruction set provides the instructions AND, OR, XOR, TEST, and NOT Boolean logic, which tests, sets,…

In this guide, we will discuss Arithmetic Instructions in Assembly Programming Language. The INC Instruction The INC instruction is used for incrementing an operand by one. It works on a…

In this guide, we will discuss Constants in Assembly programming Language. There are several directives provided by NASM that define constants. We have already used the EQU directive in previous…

In this guide, we will discuss Variables in Assembly Programming Language. NASM provides various define directives for reserving storage space for variables. The define assembler directive is used for allocation of storage…

In this guide, we will discuss Addressing Modes in Assembly Programming Language. Most assembly language instructions require operands to be processed. An operand address provides the location, where the data…