Addressing Mode	aaa	Letters	Operand
Immediate	000	i	OprndSpec
Direct	001	d	Mem [OprndSpec ]
Indirect	010	n	Mem [Mem [OprndSpec ]]
Stack-relative	011	s	Mem [SP + OprndSpec ]
Stack-relative deferred	100	sf	Mem [Mem [SP + OprndSpec ]]
Indexed	101	x	Mem [OprndSpec + X ]
Stack-indexed	110	sx	Mem [SP + OprndSpec + X ]
Stack-indexed deferred	111	sxf	Mem [Mem [SP + OprndSpec ] + X ]