Specifications

Intel
®
64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 73
Documentation Changes
Instruction Operand Encoding
...
0F 89 cw JNS rel16 A N.S. Valid Jump near if not sign (SF=0).
Not supported in 64-bit
mode.
0F 89 cd JNS rel32 A Valid Valid Jump near if not sign (SF=0).
0F 85 cw JNZ rel16 A N.S. Valid Jump near if not zero
(ZF=0). Not supported in
64-bit mode.
0F 85 cd JNZ rel32 A Valid Valid Jump near if not zero
(ZF=0).
0F 80 cw JO rel16 A N.S. Valid Jump near if overflow
(OF=1). Not supported in
64-bit mode.
0F 80 cd JO rel32 A Valid Valid Jump near if overflow
(OF=1).
0F 8A cw JP rel16 A N.S. Valid Jump near if parity (PF=1).
Not supported in 64-bit
mode.
0F 8A cd JP rel32 A Valid Valid Jump near if parity (PF=1).
0F 8A cw JPE rel16 A N.S. Valid Jump near if parity even
(PF=1). Not supported in 64-
bit mode.
0F 8A cd JPE rel32 A Valid Valid Jump near if parity even
(PF=1).
0F 8B cw JPO rel16 A N.S. Valid Jump near if parity odd
(PF=0). Not supported in 64-
bit mode.
0F 8B cd JPO rel32 A Valid Valid Jump near if parity odd
(PF=0).
0F 88 cw JS rel16 A N.S. Valid Jump near if sign (SF=1). Not
supported in 64-bit mode.
0F 88 cd JS rel32 A Valid Valid Jump near if sign (SF=1).
0F 84 cw JZ rel16 A N.S. Valid Jump near if 0 (ZF=1). Not
supported in 64-bit mode.
0F 84 cd JZ rel32 A Valid Valid Jump near if 0 (ZF=1).
Op/En Operand 1 Operand 2 Operand 3 Operand 4
AOffset NA NA NA
Opcode Instruction Op/
En
64-Bit
Mode
Compat/
Leg Mode
Description