By: Masud-ul-Hasan
3
8051 Addressing Modes
• Addressing modes are an integral part of each computers instruction set. They allow different ways of specifying source/destination operand addresses depending on the programming situation. There are 8 modes of addressing:
1.Immediate
2.Register
3.Direct
4.Indirect
5.Relative
6.Absolute
7.Long
8.Indexed
General Format of Instruction:
Label:    OpCode  Destination, source   ; Comments