Operand is inside the instruction
Address of the operand is outside the instruction
Register containing the address of the operand is specified inside the instruction
Location of the operand is implicit.
8251
8250
8253
8088
Assembler directives
Instructions in any program that have corresponding machine code instruction
Instruction in any program whose absence will not change the output for any input
None of these
n
n+1
n-1
independent of n
Direct
Register
Register indirect
Index