参数资料
型号: MC68HC08AS20CFN
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PQCC52
封装: PLASTIC, LCC-52
文件页数: 20/96页
文件大小: 3243K
代理商: MC68HC08AS20CFN
3
MC68HC05E0
MOTOROLA
3-5
CPU CORE AND INSTRUCTION SET
Table 3-1 MUL instruction
Operation
X:A
← X*A
Description
Multiplies the eight bits in the index register by the eight
bits in the accumulator and places the 16-bit result in the
concatenated accumulator and index register.
Condition
codes
H : Cleared
I : Not affected
N : Not affected
Z : Not affected
C : Cleared
Source
MUL
Form
Addressing mode
Cycles
Bytes
Opcode
Inherent
11
1
$42
Table 3-2 Register/memory instructions
Addressing modes
Immediate
Direct
Extended
Indexed
(no
offset)
Indexed
(8-bit
offset)
Indexed
(16-bit
offset)
Function
Mnemonic
Opcode
#Bytes
#Cyc
les
Opcode
#Bytes
#Cyc
les
Opcode
#Bytes
#Cyc
les
Opcode
#Bytes
#Cyc
les
Opcode
#Bytes
#Cyc
les
Opcode
#Bytes
#Cyc
les
Load A from memory
LDA
A6
2
B6
2
3
C6
3
4
F6
1
3
E6
2
4
D6
3
5
Load X from memory
LDX
AE
2
BE
2
3
CE
3
4
FE
1
3
EE
2
4
DE
3
5
Store A in memory
STA
B7
2
4
C7
3
5
F7
1
4
E7
2
5
D7
3
6
Store X in memory
STX
BF
2
4
CF
3
5
FF
1
4
EF
2
5
DF
3
6
Add memory to A
ADD
AB
2
BB
2
3
CB
3
4
FB
1
3
EB
2
4
DB
3
5
Add memory and carry to A
ADC
A9
2
B9
2
3
C9
3
4
F9
1
3
E9
2
4
D9
3
5
Subtract memory
SUB
A0
2
B0
2
3
C0
3
4
F0
1
3
E0
2
4
D0
3
5
Subtract memory from A
with borrow
SBC
A2
2
B2
2
3
C2
3
4
F2
1
3
E2
2
4
D2
3
5
AND memory with A
AND
A4
2
B4
2
3
C4
3
4
F4
1
3
E4
2
4
D4
3
5
OR memory with A
ORA
AA
2
BA
2
3
CA
3
4
FA
1
3
EA
2
4
DA
3
5
Exclusive OR memory with A
EOR
A8
2
B8
2
3
C8
3
4
F8
1
3
E8
2
4
D8
3
5
Arithmetic compare A
with memory
CMP
A1
2
B1
2
3
C1
3
4
F1
1
3
E1
2
4
D1
3
5
Arithmetic compare X
with memory
CPX
A3
2
B3
2
3
C3
3
4
F3
1
3
E3
2
4
D3
3
5
Bit test memory with A
(logical compare)
BIT
A5
2
B5
2
3
C5
3
4
F5
1
3
E5
2
4
D5
3
5
Jump unconditional
JMP
BC
2
CC
3
FC
1
2
EC
2
3
DC
3
4
Jump to subroutine
JSR
BD
2
5
CD
3
6
FD
1
5
ED
2
6
DD
3
7
27
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