THE
80286
INSTRUCTION SET
STI-Set
Interrupt Enable Flag
Opcode Instruction Clocks Description
FB
STI 2 Set interrupt enable flag, interrupts enabled
FLAGS MODIFIED
Interrupt = I (enabled)
FLAGS UNDEFINED
None
OPERATION
The interrupts-enabled flag
is
sct to
1.
The 80286 will
now
respond to external interrupts after execut-
ing the STI instruction.
PROTECTED MODE EXCEPTIONS
#GP(O) if the current privilege level
is
bigger (has less privilege) than the
I/O
privilege level.
REAL
ADDRESS MODE EXCEPTIONS
None
B-106
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