- Immediate
- Direct
- Indirect
- Register
- Register Indirect
- Displacement (Indexed)
- Stack
Immediate Addressing
- Operand is part of instruction
- Operand = address field
- e.g. ADD 5
— Add 5 to contents of accumulator
— 5 is operand
- No memory reference to fetch data
- Fast
- Limited range
Direct Addressing
- Address field contains address of operand
- Effective address (EA) = address field (A)
