THE
80286
INSTRUCTION SET
XLAT
-Table
Look-up Translation
Opcode Instruction
Clocks Description
07
XLAT mb
5
Set AL to memory byte OS:[BX + unsigned
AL]
07
XLATB
5
Set
AL
to memory byte OS:[BX + unsigned
AL]
FLAGS MODIFIED
None
FLAGS UNDEFINED
None
OPERATION
When XLAT
is
executed, AL should be the unsigned index into a table addressed
by
DS:BX. XLAT
changes the AL register from the table index into the table entry. BX
is
unchanged.
PROTECTED MODE EXCEPTIONS
#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.
B-115
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