# LAHF
# Load Status Flags into AH Register
| Opcode | Mnemonic | Description |
|---|---|---|
| 9F | LAHF | Load: AH = EFLAGS(SF:ZF:0:AF:0:PF:1:CF). |
# Description
Moves the low byte of the EFLAGS register (which includes status flags SF, ZF, AF, PF, and CF) to the AH register. Reserved bits 1, 3, and 5 of the EFLAGS register are set in the AH register as shown in the "Operation" section below.
# Operation
AH = EFLAGS(SF:ZF:0:AF:0:PF:1:CF);
1
2
2
# Flags affected
None (that is, the state of the flags in the EFLAGS register is not affected).
# Exceptions
None.