Question

At which point the processor will start to internally process the interrupt?

(a) interrupt pointer

(b) instruction pointer

(c) instruction boundary

(d) interrupt boundary

The question was asked by my school principal while I was bunking the class.

My doubt stems from The mechanism of Interrupts topic in portion Interrupts and Exceptions of Embedded Systems

Answer 1

Correct choice is (c) instruction boundary

For explanation: After the recognition of the interrupt, and finds that it is not an error condition with the currently executing interrupt, then the interrupt will not be internally executed until the current execution has completed. This point is known as the instruction boundary. At this point, the processor will start to internally process the interrupt.