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Chapter 17 -- 80386 Instruction Set
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LAHF -- Load Flags into AH Register
Opcode Instruction Clocks Description
9F LAHF 2 Load: AH := flags SF ZF xx AF xx PF xx CF
Operation
AH := SF:ZF:xx:AF:xx:PF:xx:CF;
Description
LAHF transfers the low byte of the flags word to AH. The bits, from
MSB to LSB, are sign, zero, indeterminate, auxiliary, carry,
indeterminate, parity, indeterminate, and carry.
Flags Affected
None
Protected Mode Exceptions
None
Real Address Mode Exceptions
None
Virtual 8086 Mode Exceptions
None
up:
Chapter 17 -- 80386 Instruction Set
prev: JMP Jump
next: LAR Load Access Rights Byte