Basic Addressing Modes
Addressing modes are the way operands (source and destination) of an instruction
are specified. In other words, the address of an operand can be specified
in a number of different ways, collectively called addressing modes. The
operands of an instruction can be the source operand or the destination
operand, where the result of the operation will be placed. The microprocessor
MC68000 provides the programmers with a range o addressing modes which
enable the manipulation of data structures such as tables, arrays and vectors.
To explain each addressing mode is necessary to introduce an appropriate
Addressing
Modes Notation.
The basic Addressing Modes which will be explain are: Immediate
Addressing, Absolute
Addressing and Register
Direct Addressing. An advanced mode not comprised here is the Address
Register Indirect Addressing.