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LAHF
LOAD REGISTER
AH
FROM FLAGS
Operation:
(AH)
+-
(SF):(ZF):X:(AF):X:(PF):X:(CF)
Description:
LAHF
(load register
AH
from flags) copies
SF,
ZF, AF,
PF
and
CF
(the 8080/S0S5 flags)
into bits 7, 6, 4, 2
and
0, respectively,
of
register
AH.
The content
of
bits 5, 3 and 1
is
undefined; the flags themselves are
not
affected.
LAHF
is
provided primarily for con-
verting
SOSO/SOS5
assembly language pro-
grams to run
on
an
SOS6
or
SOSS.
Encoding:
1100111111
Flags Affected:
None
LAHF
LAH
F Operands Clocks
Transfers Bytes
LAH
F Coding Example
(no operands)
4
-
1
LAHF
2-107