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ISRO | ISRO CS 2008 | Question 34

  • Last Updated : 05 Apr, 2021

An interrupt in which the external device supplies its address as well as the interrupt requests is known as
(A) vectored interrupt
(B) maskable interrupt
(C) non-maskable interrupt
(D) designated interrupt


Answer: (A)

Explanation: A vectored interrupt has pre-defined instruction to execute (like for power failure, where programmers should define code that must execute in case of power failure).
The address of that pre-defined instruction (power failure code) is known as a Vectored address.
This power failure instruction/instruction should be in high priority, non-maskable and pre-defined/vectored.

Non-Maskable interrupt means, CPU can not ignore this interrupt. The CPU must execute a Non-Maskable interrupt before executing new instructions in sequence.
Interrupt is also another type of program like other programs.

Please refer : https://www.geeksforgeeks.org/interrupts-8085-microprocessor/

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