Question

After the interrupt has occurred, the stack is filled with ______________

(a) return address

(b) status register

(c) return address & status register

(d) none of the mentioned

The question was posed to me in class test.

I want to ask this question from Interrupts topic in chapter MSP430 Microcontroller of Microcontroller

Answer 1

Right answer is (c) return address & status register

The explanation: When an interrupt had occurred, the top place of the stack is filled with the return address, so that immediately after the reti instruction the pointer moves to the main program, the stack is also filled with the bits of the status register so that all the temporary values get stored in it.