AMD Geode LX [email protected] User Manual
Page 637
AMD Geode™ LX Processors Data Book
637
Instruction Set
33234H
IMUL Integer (Signed) Multiply
x
-
-
-
x
x
u
u
x
b
h
Accumulator by Register/Memory
Multiplier: Byte
Word
Doubleword
F [011w] [mod 101 r/m]
3
4
4
3
4
4
Register with Register/Memory
Multiplier:
Word
Doubleword
0F AF [mod reg r/m]
4
4
4
4
Register/Memory with Immediate to Register2
Multiplier:
Byte
Word
Doubleword
6 [10s1] [mod reg r/m] ###
4-6
4-7
4-7
4-6
4-7
4-7
IN Input from I/O Port
-
-
-
-
-
-
-
-
-
m
Fixed Port
E [010w] #
7
7/21
Variable Port
E [110w]
7
7/21
INC Increment by 1
x
-
-
-
x
x
x
x
-
b
h
Register/Memory
F [111w] [mod 000 r/m]
1
1
Register (short form)
4 [0 reg]
1
1
INS Input String from I/O Port
6 [110w]
10
10/24
-
-
-
-
-
-
-
-
-
b
h,m
INT i Software Interrupt
CD #
23
37-245
-
-
x
0
-
-
-
-
-
b,e
g,j,k,r
INT 3 Breakpoint Software Interrupt
CC
21-22
37-245
b,c
g,i,k,r
INTO Overflow Software Interrupt
If OF==0
If OF==1 (INT 4)
CE
4
7
4
7
b,c
g,i,k,r
INVD Invalidate Cache
0F 08
9+
9+
-
-
-
-
-
-
-
-
-
t
t
INVLPG Invalidate TLB Entry
0F 01 [mod 111 r/m]
7+
7+
-
-
-
-
-
-
-
-
-
IRET Interrupt Return
CF
6-13
13-239
x
x
x
x
x
x
x
x
x
g,h,j,k,
r
JB/JNAE/JC Jump on Below/Not Above or Equal/Carry
-
-
-
-
-
-
-
-
-
r
8-bit Displacement
72 +
1
1
Full Displacement
0F 82 +++
1
1
JBE/JNA Jump on Below or Equal/Not Above
-
-
-
-
-
-
-
-
r
8-bit Displacement
76 +
1
1
Full Displacement
0F 86 +++
1
1
JCXZ/JECXZ Jump on CX/ECX Zero
E3 +
2
2
-
-
-
-
-
-
-
-
-
r
JE/JZ Jump on Equal/Zero
-
-
-
-
-
-
-
-
r
8-bit Displacement
74 +
1
1
Full Displacement
0F 84 +++
1
1
JL/JNGE Jump on Less/Not Greater or Equal
-
-
-
-
-
-
-
-
r
8-bit Displacement
7C +
1
1
Full Displacement
0F 8C +++
1
1
JLE/JNG Jump on Less or Equal/Not Greater
-
-
-
-
-
-
-
-
r
8-bit Displacement
7E +
1
1
Full Displacement
0F 8E +++
1
1
JMP Unconditional Jump
-
-
-
-
-
-
-
-
b
h,j,k,r
8-bit Displacement
EB +
1
1
Full Displacement
E9 +++
1
1
Register/Memory Indirect Within Segment
FF [mod 100 r/m]
1/3
1/3
Direct Intersegment
EA [unsigned full offset,
selector]
7
9-254
Indirect Intersegment
FF [mod 101 r/m]
9
11-256
JNB/JAE/JNC Jump on Not Below/Above or Equal/Not Carry
-
-
-
-
-
-
-
-
r
8-bit Displacement
73 +
1
1
Full Displacement
0F 83 +++
1
1
Table 8-26. Processor Core Instruction Set (Continued)
Instruction
Opcode
Clock Count
(Reg/Cache Hit)
Flags
Notes
Real
Mode
Prot’d
Mode
O D I
T
S Z
A P C
F
F
F
F
F
F
F
F
F
Real
Mode
Prot’d
Mode