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IP (Instruction Pointer)
Pointer to the current instruction being executed
It is not directly affected by OR
Read-only, can be set by certain jump instructions
SP (Stack Pointer)
Pointer to the bottom of the stack (grows down) (used implicitly by push/pop instructions)
BP (Base Pointer)
Pointer to the top of the stack (grows down) (used implicitly by push/pop instructions)
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