How many hardware interrupt pins are there in 8086 microprocessor?
two hardware interrupt pins
The 8086 has two hardware interrupt pins, i.e. NMI and INTR. NMI is a non-maskable interrupt and INTR is a maskable interrupt having lower priority.
How many instructions are there in 8086 microprocessor?
General purpose registers are used to store temporary data within the microprocessor. There are 8 general purpose registers in 8086 microprocessor. AX – This is the accumulator. It is of 16 bits and is divided into two 8-bit registers AH and AL to also perform 8-bit instructions.
What are the instruction set of 8086?
Branch Instructions
| Instruction | Description |
|---|---|
| INTO | Software interrupts to indicate overflow after arithmetic operation. |
| LOOP | Jump to defined label until CX = 0. |
| LOOPZ/LOOPE | Decrement CX register and jump if CX ≠ 0 and ZF = 1. |
| LOOPNZ/LOOPNE | Decrement CX register and jump if CX ≠ 0 and ZF = 0. |
Which of the following is a hardware interrupt?
Explanation: 8085 microprocessor has 5 hardware interrupts. Named TRAP, RST 7.5, RST 6.5, RST 5.5 and INTR.
What is hardware and software interrupts in microprocessor?
Hardware interrupt is an interrupt generated from an external device or hardware. Software interrupt is the interrupt that is generated by any internal system of the computer.
What are instructions in microprocessor?
An instruction of a computer is a command given to the computer to perform a specified operation on given data. In microprocessor, the instruction set is the collection of the instructions that the microprocessor is designed to execute. The programmer writes a program in assembly language using these instructions.
What is wait instruction in 8086 microprocessor?
DESCRIPTION: The WAIT instruction monitors the hardware BUSY pin on 80286 and 80386, and the TEST pin on the 8086/8088. This instruction is used to prevent the CPU fromaccessing memory that may be temporarily in use by the coprocessor.
What is an instruction set in microprocessor?
An instruction set is a group of commands for a CPU in machine language. The term can refer to all possible instructions for a CPU or a subset of instructions to enhance its performance in certain situations.
What are the six basic features of the 8086 microprocessor?
Features of 8086 Microprocessor:
What are the two basic units 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 the difference between hardware and software interrupt?
The main difference between hardware and software interrupt is that a hardware interrupt is generated by an external device while a software interrupt is generated by an executing program. An interrupt is an event that occurs by a component of a device other than the CPU.