What is maskable interrupt with example?

What is maskable interrupt with example?

Maskable Interrupts are those which can be disabled or ignored by the microprocessor. These interrupts are either edge-triggered or level-triggered, so they can be disabled. INTR, RST 7.5, RST 6.5, RST 5.5 are maskable interrupts in 8085 microprocessor.

Which interrupt 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 maskable and non maskable interrupts in 8085?

These interrupts are either edge-triggered or level-triggered, so they Page 2 can be disabled. 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.

What is the differences between maskable and UN maskable interrupt?

In brief, maskable and non-maskable interrupts are two types of interrupts. The main difference between maskable and non maskable interrupt is that maskable interrupt can be disabled or ignored by the CPU while non-maskable interrupt cannot be disabled or ignored by the CPU.

What is masking and why it is needed in microprocessor?

It provides the ability for selectively disabling the interrupts. An interrupt pin which is already masked cannot interrupt, even though the interrupt pin is still in active state and the interrupts which are generally enabled using the EI set of instructions.

What is the meaning of HLT instruction?

halt
In the x86 computer architecture, HLT (halt) is an assembly language instruction which halts the central processing unit (CPU) until the next external interrupt is fired. Interrupts are signals sent by hardware devices to the CPU alerting it that an event occurred to which it should react.

What are non maskable interrupts Mcq?

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

Non-Maskable Interrupt

• Input/Output.
• Coprocessors.
• Programmable Interrupt Controller.
• Universal Serial Bus.
• Interrupt Controller.
• Interrupt Request.
• Software Interrupt.

How will you mask an interrupt 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 masking of interrupts?

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 are interrupt masks?

A central processing unit (CPU) feature that allows the computer to ignore (mask) an interrupt request until the mask bit is disabled.