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LAHF - Load Status Flags into AH Register

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Code 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
Operands Bytes Clocks
1 2 NP

Flags
ID unaffected DF unaffected
VIP unaffected IF unaffected
VIF unaffected TF unaffected
AC unaffected SF unaffected
VM unaffected ZF unaffected
RF unaffected AF unaffected
NT unaffected PF unaffected
IOPL unaffected CF unaffected
OF unaffected