SAHF sets the low byte of the flags word according to the
contents of the AH register.
The operation of SAHF is:
AH --> SF:ZF:0:AF:0:PF:1:CF
See also LAHF (LAHF).
sahf
8086 and laterStore AH into Flags
sahfLoading...
Forms
Every form of sahf the assembler accepts, from NASM's own instruction table.
The second column is the processor that introduced the form; a badge marks a form that needs
an extension, that is lockable, or that long mode dropped.
| Form | Since | Notes |
|---|---|---|
| sahf | 8086 |