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68HC11 Instruction Set

Modified and corrected from Tom Dickens. Please notify me of any errors!

Mnemonic	Operation	Addressing Mode	Instruction			Bytes	Cycles	Condition Codes
			Prebyte	Opcode	Operand
ABA	Add Accumulators	INH	—	1B	—	1	2
ABX	Add B to X	INH	—	3A	—	1	3
ABY	Add B to Y	INH	18	3A	—	2	4
ADCA	Add with Carry to A	IMM	—	89	ii	2	2
		DIR	—	99	dd	2	3
		EXT	—	B9	hh ll	3	4
		IND, X	—	A9	ff	2	4
		IND, Y	18	A9	ff	3	5
ADCB	Add with Carry to B	IMM	—	C9	ii	2	2
		DIR	—	D9	dd	2	3
		EXT	—	F9	hh ll	3	4
		IND, X	—	E9	ff	2	4
		IND, Y	18	E9	ff	3	5
ADDA	Add Memory to A	IMM	—	8B	ii	2	2
		DIR	—	9B	dd	2	3
		EXT	—	BB	hh ll	3	4
		IND, X	—	AB	ff	2	4
		IND, Y	18	AB	ff	3	5
ADDB	Add Memory to B	IMM	—	CB	ii	2	2
		DIR	—	DB	dd	2	3
		EXT	—	FB	hh ll	3	4
		IND, X	—	EB	ff	2	4
		IND, Y	18	EB	ff	3	5
ADDD	Add 16-Bit to D	IMM	—	C3	jj kk	3	4
		DIR	—	D3	dd	2	5
		EXT	—	F3	hh ll	3	6
		IND, X	—	E3	ff	2	6
		IND, Y	18	E3	ff	3	7
ANDA	AND A with Memory	IMM	—	84	ii	2	2
		DIR	—	94	dd	2	3
		EXT	—	B4	hh ll	3	4
		IND, X	—	A4	ff	2	4
		IND, Y	18	A4	ff	3	5
ANDB	AND B with Memory	IMM	—	C4	ii	2	2
		DIR	—	D4	dd	2	3
		EXT	—	F4	hh ll	3	4
		IND, X	—	E4	ff	2	4
		IND, Y	18	E4	ff	3