[PDF] 6502 stack pointer

Stack pointer is a variable that holds the current index of stack. In 6502 assembly, it's an number which sets the boundary between used and unsued stack elements. In a 6502 microprocessor, stack is hardcoded between the memory addresses $0100 and $01FF. And it's in the zeroeth page of the memory.
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  • Where is the stack in 6502?

    The 6502 has hardware support for a stack implemented using a 256-byte array whose location is hardcoded at page $01 ($0100-$01FF), using the S register for a stack pointer.4 août 2020

  • Is stack pointer in RAM?

    Stack is always in RAM. There is a stack pointer that is kept in a register in CPU that points to the top of stack, i.e., the address of the location at the top of stack.

  • What is a stack pointer?

    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.
  • 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.
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