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80386 Programmer's Reference Manual -- Opcode SAHF

SAHF -- Store AH into Flags

OpcodeInstructionClocks DescriptionExample
9Esahf 3 Store AH into flags SF ZF xx AF xx PF xx CFsahf

Operation




SF:ZF:xx:AF:xx:PF:xx:CF := AH;

Description

SAHF loads the flags listed above with values from the AH register, from bits 7, 6, 4, 2, and 0, respectively.

Flags Affected

SF, ZF, AF, PF, and CF as described above

Protected Mode Exceptions

None

Real Address Mode Exceptions

None

Virtual 8086 Mode Exceptions

None

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