FNSTSW
ax
x86_64 X86_LEGACY X87_ALU FPU source: asmjit
X86_FNSTSW_X86_LEGACY_ONEBYTE_DF_75700
Encoding
| encoding_kind | X86_LEGACY |
| opcode_bytes | DF |
| opcode_map | ONEBYTE |
| mandatory_prefix | - |
| has_modrm | False |
| raw_encoding | DF E0 |
Operands (1)
| # | Role | Kind | Class / Reg | Width | Access | Visibility | Encoded in |
|---|---|---|---|---|---|---|---|
| 0 | REG0 | REG | (=AX) | w | RW | IMPLICIT |
Micro-ops sequence (0)
No micro-ops authored for this encoding. Emulator semantics not yet defined — decoder still works.