Keep track of the current location in memory for the stack.
Provide the base address for the stack.
Manage the push and pop operations of data onto and off of the stack.
Point to the top of the stack, indicating the next available location for data.
Adjust the stack pointer when data is added or removed.
Keep track of the size of the stack.
Provide a reference point for stack-related assembly instructions such as "PUSH" and "POP".
Ensure that data is stored and retrieved in a last-in, first-out (LIFO) order.
Provide a way to check if the stack is full or empty.
Help in maintaining the stack frame during function call and return operations.