i386/i386.reference/SAHF.htm

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   4 <TITLE>80386 Programmer's Reference Manual -- Opcode SAHF</TITLE>
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   8 Chapter 17 -- 80386 Instruction Set</A><BR>
   9 <B>prev:</B><A HREF="RET.htm"> RET Return from Procedure</A><BR>
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  13 <P>
  14 <H1>SAHF -- Store AH into Flags</H1>
  15
  16 <PRE>
  17 Opcode  Instruction  Clocks   Description
  18
  19 9E      SAHF         3        Store AH into flags SF ZF xx AF xx PF xx CF
  20 </PRE>
  21
  22 <H2>Operation</H2>
  23
  24 <PRE>
  25 SF:ZF:xx:AF:xx:PF:xx:CF := AH;
  26 </PRE>
  27
  28 <H2>Description</H2>
  29
  30 SAHF loads the flags listed above with values from the AH register,
  31 from bits 7, 6, 4, 2, and 0, respectively.
  32
  33 <H2>Flags Affected</H2>
  34
  35 SF, ZF, AF, PF, and CF as described above
  36
  37 <H2>Protected Mode Exceptions</H2>
  38
  39 None
  40
  41 <H2>Real Address Mode Exceptions</H2>
  42
  43 None
  44
  45 <H2>Virtual 8086 Mode Exceptions</H2>
  46
  47 None
  48
  49
  50 <P>
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  52 <P>
  53 <B>up:</B> <A HREF="c17.htm">
  54 Chapter 17 -- 80386 Instruction Set</A><BR>
  55 <B>prev:</B><A HREF="RET.htm"> RET Return from Procedure</A><BR>
  56 <B>next:</B><A HREF="SAL.htm"> SAL/SAR/SHL/SHR Shift Instructions</A>
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