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THE 80286·INSTRUCTION SET
ell-Clear
Interrupt
Flag
Opcode Instruction Clocks Description
FA
CLI
3
Clear interrupt flag; interrupts disabled
FLAGS MODIFIED
Interrupt = 0
FLAGS UNDEFINED
None
OPERATION
CLI
clears the interrupt enable flag if the current privilege level
is
at
least
as
privileged
as
10PL. No
other flags are affected. External interrupts
will
not
be
recognized
at
the end of the
CLI
instruction or
thereafter until the interrupt flag
is
set.
PROTECTED MODE EXCEPTIONS
#GP(O)
if the current privilege level
is
bigger (has
less
privilege) than the
10PL
in
the flags register.
10PL
specifies the least privileged level
at
which
I/O
may be performed.
REAL ADDRESS MODE EXCEPTIONS
None
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