3-220
INSTRUCTION SET REFERENCE
FNOPNo Operation
Description
This instruction performs no FPU operation. This instruction takes up space in the instruction
stream but does not affect the FPU or machine context, except the EIP register.
FPU Flags Affected
C0, C1, C2, C3 undefined.
Floating-Point Exceptions
None.
Protected Mode Exceptions
#NM
EM or TS in CR0 is set.
Real-Address Mode Exceptions
#NM
EM or TS in CR0 is set.
Virtual-8086 Mode Exceptions
#NM
EM or TS in CR0 is set.
Opcode
Instruction
Description
D9 D0
FNOP
No operation is performed.
