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
JMP Unconditional Jump
Opcode
Notes
8-bit Displacement
EB
+
-
-
-
-
-
-
-
-
1
1
1
1
b
h,j,k,r
Full Displacement
E9 +++
Register/Memory Indirect Within Segment
FF [mod 100 r/m]
1/3
8
1/3
Direct Intersegment
EA [unsigned full offset,
selector]
12
22
-Call Gate Same Privilege Level
-16-bit Task to 16-bit TSS
-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
186
192
126
189
195
129
Indirect Intersegment
FF [mod 101 r/m]
10
13
-Call Gate Same Privilege Level
-16-bit Task to 16-bit TSS
-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
23
187
193
127
190
196
130
JNB/JAE/JNC Jump on Not Below/Above or Equal/Not Carry
8-bit Displacement
Full Displacement
73 +
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1
1
1
r
r
r
r
r
r
r
r
r
r
r
0F 83 +++
JNBE/JA Jump on Not Below or Equal/Above
8-bit Displacement
77 +
1
1
1
1
Full Displacement
0F 87 +++
JNE/JNZ Jump on Not Equal/Not Zero
8-bit Displacement
75 +
1
1
1
1
Full Displacement
0F 85 +++
JNL/JGE Jump on Not Less/Greater or Equal
8-bit Displacement
7D +
1
1
1
1
Full Displacement
0F 8D +++
JNLE/JG Jump on Not Less or Equal/Greater
8-bit Displacement
7F +
1
1
1
1
Full Displacement
0F 8F +++
JNO Jump on Not Overflow
8-bit Displacement
71 +
1
1
1
1
Full Displacement
0F 81 +++
JNP/JPO Jump on Not Parity/Parity Odd
8-bit Displacement
7B +
1
1
1
1
Full Displacement
0F 8B +++
JNS Jump on Not Sign
8-bit Displacement
79 +
1
1
1
1
Full Displacement
0F 89 +++
JO Jump on Overflow
8-bit Displacement
70 +
1
1
1
1
Full Displacement
0F 80 +++
JP/JPE Jump on Parity/Parity Even
8-bit Displacement
7A +
1
1
1
1
Full Displacement
0F 8A +++
JS Jump on Sign
8-bit Displacement
78 +
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1
2
1
1
2
Full Displacement
0F 88 +++
9F
LAHF Load AH with Flags
LAR Load Access Rights
From Register/Memory
LDS Load Pointer to DS
-
0F 02 [mod reg r/m]
C5 [mod reg r/m]
-
-
-
-
-
-
-
-
-
-
x
-
-
-
-
-
-
-
9
9
a
b
g,h,j,p
h,i,j
4
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