INTRODUCTION TO MICROPEOCESSOR
MICROPROCESSOR TERMINOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Address of bottom of stack
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Address of instruction being executed
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Address of instruction to be executed
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Address of top of stack
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Detailed explanation-1: -What is stack pointer? A stack pointer is a small register that stores the memory address of the last data element added to the stack or, in some cases, the first available address in the stack.
Detailed explanation-2: -Stack Pointer is a pointer that always points to the top of the stack. In microprocessors, a stack pointer is a memory unit in the address register that stores the address of the top of the stack.
Detailed explanation-3: -The stack pointer “SP” is the register which holds the address of the top of the stack. On the HC12 and HCS12, the SP points to the last byte placed on the stack. That is, the SP register contains the memory address of the last byte put on the stack, and data is pushed or pulled to/from this address.
Detailed explanation-4: -When an element is inserted at the top of the stack then the address of the element is stored in a register. This register is known as a stack pointer.