Address Mode Groups
-------------------
ID	Mode set		Mnemonic
--	--------		--------
A	1			DATA_REGISTER

B	2			ADDRESS_REGISTER

C	4			POSTINCREMENT

D	5			PREDECREMENT

E	6			DISPLACEMENT

F	10			IMMEDIATE

G	13			NORMAL

H	14			CONDITION_CODE_REGISTER

I	15			STATUS_REGISTER

J	16			(no operand at all!)

K	17			USER_STACK_POINTER

L	{ 17-18 }		CONTROL_REGISTER

M	{ 1-2 }			REGISTER

N	{ 1-7, 11-13 }		STORABLE

O	{ 1-13 }		FULL_EA

P	{ 1, 3-7, 11-13 }	STORABLE_NO_A_REGISTER

Q	{ 1, 3-13 }		FULL_EA_NO_A_REG

R	{ 3-4, 6-9, 11-13 }	MISC_1

S	{ 3-7, 11-13 }		STORABLE_NO_REGISTER

T	{ 3, 5-7, 11-13 }	MISC_2

U	{ 3, 6-9, 11-13 }	MISC_3