Addressing Modes

The original Motorola 68000 has 14 addressing modes ¹.

Effective Addressing Modes

Mode	Assembler Syntax	EA Mode Field	EA Register Field	Extension Words
Data Register Direct	Dn	0 0 0	Register number	0
Address Register Direct	An	0 0 1	Register number	0
Address Register Indirect	(An)	0 1 0	Register number	0
Address Register Indirect with Postincrement	(An)+	0 1 1	Register number	0
Address Register Indirect with Predecrement	-(An)	1 0 0	Register number	0
Address Register Indirect with Displacement	(d16, An)	1 0 1	Register number	1
Address Register Indirect with Index	(d8, An, Xn)	1 1 0	Register number	1
Program Counter Relative with Displacement	(d16, PC)	1 1 1	0 1 0	1
Program Counter Relative with Index	(d8, PC, Xn)	1 1 1	0 1 1	1
Absolute Short Data	(address).W	1 1 1	0 0 0	1
Absolute Long Data	(address).L	1 1 1	0 0 1	2
Immediate	#(data)	1 1 1	1 0 0	1, 2