Which is non-maskable interrupt?

Which is non-maskable interrupt?

In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. It typically occurs to signal attention for non-recoverable hardware errors. Some NMIs may be masked, but only by using proprietary methods specific to the particular NMI.

What are non-maskable interrupts in 8086?

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. One more interrupt pin associated is INTA called interrupt acknowledge.

What is interrupt explain maskable and non-maskable?

Maskable interrupt is a hardware Interrupt that can be disabled or ignored by the instructions of CPU. A non-maskable interrupt is a hardware interrupt that cannot be disabled or ignored by the instructions of CPU. 2. When maskable interrupt occur, it can be handled after executing the current instruction.

What is interrupt in MSP430?

Interrupts are generally any trigger that causes the CPU to deviate from executing instructions in the order set by the instructions. When an interrupt occurs, the CPU of the MSP430 saves its current state and goes to handle the interrupt handler if one exists.

What are non-maskable interrupts Mcq?

Types of Interrupts MCQ Question 1 Detailed Solution A non-maskable is an interrupt which can not be disabled. RST 7.5, RST 5.5 are maskable interrupts but TRAP is a non-maskable interrupt.

What is meant by non-maskable interrupts Mcq?

Explanation: The Non-Maskable Interrupt input pin has the highest priority among all the external interrupts. 2. The interrupt for which the processor has highest priority among all the internal interrupts is. a) keyboard interrupt. b) TRAP.

What is non-maskable interrupt list out names of non maskable interrupts?

The non-maskable interrupt (NMI) is a special hardware interrupt that is connected to the NMI pin of the CPU. The NMI is assigned an interrupt number of 2, although, since it cannot be masked by other interrupts, it effectively has the highest priority and is designed to be recognised in the shortest possible time.

What are various types of interrupts?

Interrupts have two types: Hardware interrupt and Software interrupt. The hardware interrupt occurrs by the interrupt request signal from peripheral circuits. On the other hand, the software interrupt occurrs by executing a dedicated instruction.

What are the operating modes of MSP430?

The MSP430 has four possible reset sources: applying supply voltage to VCC pin, a low input to the, RST/NMI pin, a programmable watchdog timer time-out and a security key violation during write access to WDTCTL register.

Why trap is non-maskable interrupt?

Non-Maskable Interrupts are those which cannot be disabled or ignored by microprocessor. TRAP is a non-maskable interrupt. It consists of both level as well as edge triggering and is used in critical power failure conditions.

Which of the following is non-maskable?

A non-maskable is an interrupt which can not be disabled. RST 7.5, RST 5.5 are maskable interrupts but TRAP is a non-maskable interrupt.

What are the two main types of interrupts?

How many non-maskable interrupts are available in the 8085 microprocessor?

Maskable and Non-Maskable Interrupts – INTR, RST 7.5, RST 6.5, RST 5.5 are maskable interrupts in 8085 microprocessor. Non-Maskable Interrupts are those which cannot be disabled or ignored by microprocessor. TRAP is a non-maskable interrupt.