Instruction Set (Continued)
Table 9-27. Processor Core Instruction Set Summary (Continued)
Real
Mode
Prot’d Real Prot’d
Mode Mode Mode
Flags
O
F
D
F
I
F
T
F
S
F
Z
F
A
F
P
F
C
F
Clock Count
(Reg/Cache Hit)
Instruction
INC Increment by 1
Opcode
Notes
Register/Memory
Register (short form)
INT Software Interrupt
INT i
F [111w] [mod 000 r/m]
4 [0 reg]
x
-
-
-
-
-
x
-
x
x
-
x
-
-
-
1
1
1
1
b
h
CD #
x
0
-
19
b,e
g,j,k,r
Protected Mode:
-Interrupt or Trap to Same Privilege
-Interrupt or Trap to Different Privilege
-16-bit Task to 16-bit TSS by Task Gate
-16-bit Task to 32-bit TSS by Task Gate
-16-bit Task to V86 by Task Gate
-16-bit Task to 16-bit TSS by Task Gate
-32-bit Task to 32-bit TSS by Task Gate
-32-bit Task to V86 by Task Gate
-V86 to 16-bit TSS by Task Gate
-V86 to 32-bit TSS by Task Gate
-V86 to Privilege 0 by Trap Gate/Int Gate
33
55
184
190
124
187
193
127
187
193
64
INT 3
CC
CE
INT
INT
INTO
If OF==0
4
4
If OF==1 (INT 4)
INT
INT
INVD Invalidate Cache
INVLPG Invalidate TLB Entry
IRET Interrupt Return
Real Mode
0F 08
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
20
15
20
15
t
t
0F 01 [mod 111 r/m]
CF
x
x
x
x
x
x
x
x
x
13
g,h,j,k,r
Protected Mode:
-Within Task to Same Privilege
-Within Task to Different Privilege
-16-bit Task to 16-bit Task
-16-bit Task to 32-bit TSS
-16-bit Task to V86 Task
-32-bit Task to 16-bit TSS
-32-bit Task to 32-bit TSS
-32-bit Task to V86 Task
20
39
169
175
109
172
178
112
JB/JNAE/JC Jump on Below/Not Above or Equal/Carry
8-bit Displacement
72 +
-
-
-
-
-
-
-
-
-
-
1
1
1
1
r
Full Displacement
0F 82 +++
JBE/JNA Jump on Below or Equal/Not Above
8-bit Displacement
76 +
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1
2
1
1
2
r
r
r
Full Displacement
0F 86 +++
E3 +
JCXZ/JECXZ Jump on CX/ECX Zero
JE/JZ Jump on Equal/Zero
8-bit Displacement
74 +
1
1
1
1
Full Displacement
0F 84 +++
JL/JNGE Jump on Less/Not Greater or Equal
8-bit Displacement
7C +
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1
1
1
r
r
Full Displacement
0F 8C +++
JLE/JNG Jump on Less or Equal/Not Greater
8-bit Displacement
7E +
1
1
1
1
Full Displacement
0F 8E +++
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