Which register is the stack pointer?

Stack registers in x86 In 8086, the main stack register is called stack pointer – SP. The stack segment register (SS) is usually used to store information about the memory segment that stores the call stack of currently executed program.

How does stack pointer work in 8086?

It is a top-down data structure whose elements are accessed using the stack pointer (SP) which gets decremented by two as we store a data word into the stack and gets incremented by two as we retrieve a data word from the stack back to the CPU register.

What is a stack pointer register describe briefly?

A stack pointer is a small register that stores the address of the last program request in a stack. A stack is a specialized buffer which stores data from the top down. As new requests come in, they “push down” the older ones.

What is stack register in microprocessor?

A stack pointer is a small register that stores the address of the last program request in a stack. A stack is a specialized buffer which stores data from the top down.

Why stack pointer is used?

The stack pointer is mainly used as a memory pointer which specifies to the memory location that read and write memory to that location. The typical usage of the stack pointer is to hold stack bits that belong to the present function.

What is the function of stack pointer in microprocessor?

The Stack Pointer register will hold the address of the top location of the stack. And the program counter is a register always it will hold the address of the memory location from where the next instruction for execution will have to be fetched.

Which register is used as the stack pointer Mcq?

SP and SS registers
Explanation: The stack is accessed using a pointer that is implemented using SP and SS registers.

What is the purpose of the stack pointer register Mcq?

Explanation: Stack is used for temporary storage of contents of registers and memory locations, status of registers.

How many pointers are used in stack?

Physically there are two stack pointers in the Cortex-M processors, but only one of them is used at a time, depending on the current value of the CONTROL register and the state of the processor (see Figure 4.8).

Why do we need stack pointers?

Stack pointer holds the address of the last accupied memory location of the stack called stack pointer. It is used to save the contents of register if it is required during the execution of a program. It indicates which memory location onward the stack is vacent for further storage.

What is a stack pointer Mcq?

A stack pointer is. a 16-bit register in the microprocessor that indicate the beginning of the stack memory. a register that decodes and executes 16-bit arithmetic expression.