Filter
Top Products
infef
80386
a e T
bl
8
-1.
803 86 nstructlon
et
oc S
CI
kC
ount S
ummary
(C
ontlnue d)
CLOCK COUNT
NOTES
Real Real
INSTRUCTION
FORMAT
Address Protected Address Protected
Mode
or
Virtual Mode
or
Virtual
Virtual
Address Virtual Address
8086 Mode 8086 Mode
Mode Mode
PROCESSOR
EXTENSION INSTRUCTIONS
Processor
Extension
Escape
111011
TTT
I
modLLL
rim I
See
h
Tn
and
LLL bits are opcode
80287/80387
information
for
coprocessor.
data
sheets
for
clock
counts
PREFIX BYTES
Address Size Prellx
I
01100111
I
0 0
LOCK
~
Bus Lock Prellx
I
11110000
I
0 0
m
Operand Size Prellx
I
01100110
I
0 0
Segment Override
Prellx
CS:
00101110
0 0
DS:
00111110
0
0
ES:
00100110
0
0
FS:
01100100
0 0
GS:
01100101
0 0
ss:
00110110
0 0
PROTECTION CONTROL
ARPL
~
Adjust Requested Privilege Level
From
Register/Memory
I
01100011
I mod
reg
rim I
N/A
20/21
a h
LAR
~
Load Access Rights
From RegislerlMemory
I
00001111
I
00000010
I
mod
reg
rim I
N/A
15/16
a
g,
h,j,p
LGDT
~
Load Global Descriptor
Table Register
I
00001111
I
00000001
ImodOl0
rim I
11 11
b,c
h,
I
LIDT
~
Load
Interrupt
Descriptor
Table Register
I
00001111
I
00000001
I
modOll
rim I
11
11
b,
c
h,
I
LLDT
~
Load Local Descriptor
Table Register
10
RegisterlMemory
I
00001111
I
00000000
I
modOl0
rim I
N/A
20/24
a
g,
h,j,1
LMSW
~
Load Machine Status Word
From
RegisterlMemory
I
00001111
I
00000001
I
modll
0
rim I
10/13 10/13
b,c
h,
I
LSL
~
Load Segment Limit
From
RegisterlMemory
I
00001111
I
00000011
I mod reg
rim I
Byte-Granular Limit
N/A
20/21
a
g,
h,j, P
Page-Granular
Limit
N/A
25/26
a
g,h,j,p
LTR
~
Load Task Register
From RegislerlMemory
I
00001111
I
00000000
I
modOOl
r/ml
N/A
23/27
a
g,
h,j,1
SGDT
~
Store Global Descriptor
Table Register
I
00001111
I
00000001
I modOOO
rim I
9 9
b,
c h
123