What is a non maskable interrupt what purpose is it used for explain?

In computing, a non-maskable interrupt (NMI) is a hardware interrupt that standard interrupt-masking techniques in the system cannot ignore. Such uses include reporting non-recoverable hardware errors, system debugging and profiling, and handling of special cases like system resets.

What are the control lines used on the bus to handle the interrupts in a computer system?

Interrupt Request (IRQ) Lines: Hardware line used by devices to interrupt signals to the CPU. It allows the CPU to interrupt its current job to process the present request. System Clock Control Line: Delivers the internal timing for various devices on the motherboard and CPU.

How do you control maskable and non maskable interrupt?

SR.NO. 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. When maskable interrupt occur, it can be handled after executing the current instruction.

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.

What is the use of the control bus?

Control bus – carries control signals from the processor to other components. The control bus also carries the clock’s pulses.

What are the uses of interrupts?

Typical uses Interrupts are commonly used to service hardware timers, transfer data to and from storage (e.g., disk I/O) and communication interfaces (e.g., UART, Ethernet), handle keyboard and mouse events, and to respond to any other time-sensitive events as required by the application system.

What is a non-maskable interrupt?

Unlike other types of interrupts, the non-maskable interrupt cannot be ignored through the use of interrupt masking techniques. Common examples of non-maskable interrupt include types of internal system chipset errors, memory corruption problems, parity errors and high-level errors needing immediate attention.

Which of the following is a non-maskable interrupt in 8085 microprocessor?

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. It consists of both level as well as edge triggering and is used in critical power failure conditions.

What are the different types of interrupt?

1. Maskable Interrupt : An Interrupt that can be disabled or ignored by the instructions of CPU are called as Maskable Interrupt.The interrupts are either edge-triggered or level-triggered or level-triggered. 2. Non-Maskable Interrupt :

Which operation cannot be masked or made pending in 8085?

Operation Cannot be masked or made pending. RST6.5, RST7.5, and RST5.5 of 8085 are some common examples of maskable Interrupts. Trap of 8085 microprocessor is an example for non-maskable interrupt. Attention reader!

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