Which pointer is used in stack?

R13 is the Stack Pointer. It is used for accessing the stack memory via PUSH and POP operations.

Can you have a pointer to the stack?

The Stack Pointer (SP) register is used to indicate the location of the last item put onto the stack. When you PUT something ONTO the stack (PUSH onto the stack), the SP is decremented before the item is placed on the stack.

Is the top of stack a pointer?

It is the memory unit within an address register called stack pointer (SP). The stack pointer always indicates the top element in the stack that means which location the data has to be inserted.

What is a stack pointer in 8085?

For 8085: Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address of the top of the stack. The stack pointer register in a computer is made available for general purpose use by programs executing at lower privilege levels than interrupt handlers.

What is the base pointer?

The base pointer is conventionally used to mark the start of a function’s stack frame, or the area of the stack managed by that function. Local variables are stored below the base pointer and above the stack pointer.

Are pointers on the stack or heap?

Pointer is allocated on the stack and the object it is pointing to is allocated on the heap.

Does stack pointer points to top of stack?

The stack pointer always points to the item that is currently at the top of the stack. A push operation pre-decrements the stack pointer before storing an item on the stack. Hence the program initializes the stack pointer to point one item beyond the highest numbered element in the array that makes up the stack.

What is base pointer?

What is top in stack?

In a stack, the top element is the element that is inserted at the last or most recently inserted element.

Why stack pointer is 16-bit?

The stack pointer always contains a memory address (the location of the top of the stack). The program counter always contains a memory address (the location of the next machine instruction to fetch). So, both the program counter and the stack pointer must be 16 bits wide.

What is microprocessor pointer?

What is stack pointer and base pointer?

in two words: stack pointer allow push/pop operations to work (so push and pop knows where to put/get data). base pointer allows code to independently reference data that have been pushed previously on the stack.