What are the assembler directives explain?
Assembler directives supply data to the program and control the assembly process. Assembler directives enable you to do the following: Assemble code and data into specified sections. Reserve space in memory for uninitialized variables. Control the appearance of listings.
What are assembler directives explain any four of them?
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).
What is instruction set of 8086 and assembler directives?
Arithmetic Instructions
| Instruction | Description |
|---|---|
| IDIV | Signed 8-bit or 16-bit division. |
| INC | Increment Register or memory by 1. |
| DEC | Decrement register or memory by 1. |
| DAA | Decimal Adjust after BCD Addition: When two BCD numbers are added, the DAA is used after ADD or ADC instruction to get correct answer in BCD. |
What is an assembler in microprocessor?
An assembler is a type of computer program that interprets software programs written in assembly language into machine language, code and instructions that can be executed by a computer.
What is directive in microprocessor?
➢ Directives are statements that give directions to the assembler about how it should translate the assembly language instructions into machine code. ➢ An assembly language instruction consists of four fields, [label:] mnemonic [operands] [;comments] Brackets indicate that the field is optional.
What is assembly language programming 8086?
The assembly programming language is a low-level language which is developed by using mnemonics. The microcontroller or microprocessor can understand only the binary language like 0’s or 1’s therefore the assembler convert the assembly language to binary language and store it the memory to perform the tasks.
What is assembly language microprocessor?
An assembly language is a low-level programming language for microprocessors and other programmable devices. It is not just a single language, but rather a group of languages. An assembly language implements a symbolic representation of the machine code needed to program a given CPU architecture.
What are the functions of assembler?
The function of an assembler is
- To convert basic language into machine language.
- To convert high level language into machine language.
- To convert assembly language into machine language.
- To convert assembly language into high level language.
What is the internal architecture of 8086 microprocessor?
The internal architecture of Intel 8086 is divided into 2 units: The Bus Interface Unit (BIU), and The Execution Unit (EU).
What is assembly language programming in 8086?
What are the features of 8086 microprocessor?
1) The 8086 is a 16-bit microprocessor. The term “16-bit” means that its arithmetic logic unit, internal registers and most of its instructions are designed to work with 16-bit binary words. 2) The 8086 has a 16-bit data bus, so it can read data from or write data to memory and ports either 16 bits or 8 bits at a time.