Central Processor Unit (CPU)
Instruction Set
M68HC11E Family — Rev. 5
Data Sheet
MOTOROLA
Central Processor Unit (CPU)
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83
CMPA (opr)
Compare A to
Memory
A – M
A
A
A
A
A
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
IMM
DIR
EXT
IND,X
IND,Y
EXT
IND,X
IND,Y
INH
81
91
B1
A1
A1
C1
D1
F1
E1
E1
73
63
63
43
18
ii
dd
hh ll
ff
ff
ii
dd
hh ll
ff
ff
hh ll
ff
ff
2
3
4
4
5
2
3
4
4
5
6
6
7
2
—
—
—
—
CMPB (opr)
Compare B to
Memory
B – M
18
—
—
—
—
COM (opr)
Ones
Complement
Memory Byte
Ones
Complement
A
Ones
Complement
B
Compare D to
Memory 16-Bit
$FF – M
M
18
—
—
—
—
0
1
COMA
$FF – A
A
A
—
—
—
—
—
0
1
COMB
$FF – B
B
B
INH
53
—
2
—
—
—
—
0
1
CPD (opr)
D – M : M + 1
IMM
DIR
EXT
IND,X
IND,Y
IMM
DIR
EXT
IND,X
IND,Y
IMM
DIR
EXT
IND,X
IND,Y
INH
1A
1A
1A
1A
CD
83
93
B3
A3
A3
8C
9C
BC
AC
AC
8C
9C
BC
AC
AC
19
jj kk
dd
hh ll
ff
ff
jj kk
dd
hh ll
ff
ff
jj kk
dd
hh ll
ff
ff
5
6
7
7
7
4
5
6
6
7
5
6
7
7
7
2
—
—
—
—
CPX (opr)
Compare X to
Memory 16-Bit
IX – M : M + 1
CD
18
18
18
1A
18
—
—
—
—
CPY (opr)
Compare Y to
Memory 16-Bit
IY – M : M + 1
—
—
—
—
DAA
Decimal Adjust
A
Decrement
Memory Byte
Adjust Sum to BCD
—
—
—
—
—
DEC (opr)
M – 1
M
EXT
IND,X
IND,Y
INH
7A
6A
6A
4A
18
hh ll
ff
ff
6
6
7
2
—
—
—
—
—
DECA
Decrement
Accumulator
A
Decrement
Accumulator
B
Decrement
Stack Pointer
Decrement
Index Register
X
Decrement
Index Register
Y
Exclusive OR A
with Memory
A – 1
A
A
—
—
—
—
—
—
DECB
B – 1
B
B
INH
5A
—
2
—
—
—
—
—
DES
SP – 1
SP
INH
34
—
3
—
—
—
—
—
—
—
—
DEX
IX – 1
IX
INH
09
—
3
—
—
—
—
—
—
—
DEY
IY – 1
IY
INH
18
09
—
4
—
—
—
—
—
—
—
EORA (opr)
A
⊕
M
A
A
A
A
A
A
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
IMM
DIR
EXT
IND,X
IND,Y
INH
88
98
B8
A8
A8
C8
D8
F8
E8
E8
03
18
ii
dd
hh ll
ff
ff
ii
dd
hh ll
ff
ff
2
3
4
4
5
2
3
4
4
5
41
—
—
—
—
0
—
EORB (opr)
Exclusive OR B
with Memory
B
⊕
M
B
18
—
—
—
—
0
—
FDIV
Fractional
Divide 16 by 16
Integer Divide
16 by 16
D / IX
IX; r
D
—
—
—
—
—
—
IDIV
D / IX
IX; r
D
INH
02
—
41
—
—
—
—
—
0
Table 4-2. Instruction Set (Sheet 3 of 7)
Mnemonic
Operation
Description
Addressing
Mode
Instruction
Operand
Condition Codes
H
I
Opcode
Cycles
S
X
N
Z
V
C
F
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