If a processor does not have any stack pointer register, then
A)It cannot have subroutine call instruction
B)It can have subroutine call instruction, but no nested subroutine
C)Nested subroutine calls are possible, but interrupts are not
D)All sequences of subroutine calls and also interrupts are

Question

Quizplus · Accepted Answer

Even without a dedicated stack pointer register, a processor can implement subroutine calls, nested subroutine calls, and interrupts by using general-purpose registers or memory locations to manage the call stack. This requires careful programming and management of memory but does not inherently prevent any of these features.

If a Processor Does Not Have Any Stack Pointer Register