Addressing modes for either load-store or cpu-centric ops
Basic :
- Register, Immediate, Indexed or displacement (subsumes register indirect), Absolute
Between RISC and CISC
- Basic , Base + Index (e.g., in IBM Power PC), Scale-index (index multiplied by the size of the element being addressed)
Very CISC-like
- Memory indirect, Auto-increment and decrement in conjunction with all others (increased complexity in pipelined units)