Opcode Map
Table 4-1. Instruction Set Summary
Effect on
CCR
Source
Form
Operation
Description
V H I N Z C
LDX #opr
LDX opr
LDX opr
LDX opr,X
LDX opr,X
LDX ,X
LDX opr,SP
LDX opr,SP
IMM
DIR
EXT
IX2
IX1
IX
AE
BE
CE
DE
EE
FE
ii
2
3
4
4
3
2
4
5
dd
hh ll
ee ff
ff
Load X from M
X ← (M)
0
–
–
o
o
–
SP1
SP2
9EEE ff
9EDE ee ff
LSL opr
LSLA
LSLX
LSL opr,X
LSL ,X
LSL opr,SP
DIR
INH
INH
IX1
IX
38
48
58
68
78
dd
ff
4
1
1
4
3
5
Logical Shift Left
(Same as ASL)
C
0
o
o
–
–
–
–
o
o
o
o
b7
b0
SP1
9E68 ff
LSR opr
LSRA
LSRX
LSR opr,X
LSR ,X
LSR opr,SP
DIR
INH
INH
IX1
IX
34
44
54
64
74
dd
4
1
1
4
3
5
0
C
Logical Shift Right
0
o
ff
b7
b0
SP1
9E64 ff
MOV opr,opr
MOV opr,X+
MOV #opr,opr
MOV X+,opr
DD
4E
5E
6E
7E
dd dd
dd
ii dd
dd
5
4
4
4
(M)
← (M)
Source
Destination
DIX+
IMD
IX+D
Move
0
–
–
0
–
–
o
o
–
H:X ← (H:X) + 1 (IX+D, DIX+)
X:A ← (X) × (A)
MUL
Unsigned multiply
–
–
0 INH
42
5
NEG opr
NEGA
NEGX
NEG opr,X
NEG ,X
NEG opr,SP
DIR
INH
INH
IX1
IX
30
40
50
60
70
dd
ff
4
1
1
4
3
5
M ← –(M) = $00 – (M)
A ← –(A) = $00 – (A)
X ← –(X) = $00 – (X)
M ← –(M) = $00 – (M)
M ← –(M) = $00 – (M)
Negate (Two’s Complement)
o
–
–
o
o
o
SP1
9E60 ff
NOP
NSA
No Operation
Nibble Swap A
None
–
–
–
–
–
–
–
–
–
–
– INH
– INH
9D
1
3
A ← (A[3:0]:A[7:4])
62
ORA #opr
ORA opr
ORA opr
ORA opr,X
ORA opr,X
ORA ,X
ORA opr,SP
ORA opr,SP
IMM
DIR
EXT
IX2
IX1
IX
SP1
SP2
AA
BA
CA
DA
EA
FA
ii
2
3
4
4
3
2
4
5
dd
hh ll
ee ff
ff
Inclusive OR A and M
A ← (A) | (M)
0
–
–
o
o
–
9EEA ff
9EDA ee ff
PSHA
PSHH
PSHX
PULA
Push A onto Stack
Push H onto Stack
Push X onto Stack
Pull A from Stack
Push (A); SP ← (SP) – 1
Push (H); SP ← (SP) – 1
Push (X); SP ← (SP) – 1
SP ← (SP + 1); Pull (A)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
– INH
– INH
– INH
– INH
87
8B
89
86
2
2
2
2
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
65
FREESCALE [ Freescale ]
