THE
80286
INSTRUCTION SET
SMSW
-Store
Machine Status
Word
Opcode
Instruction
Clocks
Description
OF
01
/4
SMSWew
2,mem=3 Store Machine Status Word to
EA
word
FLAGS MODIFIED
None
FLAGS UNDEFINED
None
OPERATION
The Machine Status Word is stored in the 2-byte register or memory location indicated by the effective
address operand.
PROTECTED MODE EXCEPTIONS
#GP(O)
if
the destination
is
in a non-writable segment. #GP(O) for an illegal memory operand effective
address in the CS, DS, or ES segments; #SS(O) for an illegal address in the
SS
segment.
REAL ADDRESS MODE EXCEPTIONS
Interrupt
13
for a word operand at offset OFFFFH.
8-103
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