What are assembler directives and operators?
An assembler directive is a statement to give direction to the assembler to perform task of the assembly process. An assembler supports directives to define data, to organise segments to control procedure, to define macros. It consists of two types of statements: instructions and directives.
What are the assembler directives?
Directives are instructions used by the assembler to help automate the assembly process and to improve program readability. Examples of common assembler directives are ORG (origin), EQU (equate), and DS. B (define space for a byte). Directives are used essentially in a pre-processing stage of the assembly process.
What are directives in 8086?
Introduction: Assembler directives are the directions to the assembler which indicate how an operand or section of the program is to be processed. These are also called pseudo operations which are not executable by the microprocessor.
What is assembler directive give example?
Assembler directives are instructions that direct the assembler to do something. This is used to set the program or register address during assembly. For example, ORG 0100h tells the assembler to assemble all subsequent code starting at address 0100h. DS. Defines an amount of free space.
What is assembler directives explain 4 assembler directives in detail?
Assembler directives- These are the statements that direct the assembler to do something. As the name says, it directs the assembler to do a task. The specialty of these statements is that they are effective only during the assembly of a program but they do not generate any code that is machine executable.
What are assembler directives list any four assembler directives and its usage?
Table 5-1: Summary of Assembler Directives
| Category | Directives |
|---|---|
| Compiler-Use-Only Directives | .bgnb .endb .file .gjsrlive .gjsrsaved .lab .livereg .loc .option .ugen .vreg |
| Location Control Directives | .align .data .rdata .sdata .space .text |
| Symbol Declaration Directives | .extern .globl .struct symbolic equate .weakext |
What is assembler directives in microcontroller?
Microcontrollers. ASSEMBLER DIRECTIVES. Assembler directives tell the assembler to do something other than creating the machine code for an. instruction. In assembly language programming, the assembler directives instruct the assembler to.
How many assembler directives are there?
5 Assembler Directives. Assembler directives supply data to the program and control the assembly process.
Which assembler directives are used to define a procedure in 8086 microprocessor?
Explanation: The assembler directive that are used for defining a procedure in the 8086 microprocessor are: PROC and ENDP.
What are MIPS directives?
Directives are instructions to the assembler, specifying an action to be taken during the assembly process. One important use of directives is declaring or reserving memory variables. In addition, directives are used to break up the program into sections.
