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IBM XT 5160

IBM XT 5160
420 pages
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Segment Override Prefix
OOlregllO
Use
of
Segment Override
Operand
Register
Default
With
Override
Prefix
IP
(Code
Address)
CS
SP
(Stack
Address)
SS
BP
(Stack
Address
or
Stack
Marker)
SS
SI
or
DI
(not
including
strings)
DS
SI
(Implicit
Source
Address
DS
for
strings)
DI
(Implicit
Destination
Address
ES
for
strings)
6-6 Instruction
Set
Never
Never
BP
+
DS
or
ES,
or
CS
ES, SS,
or
CS
ES, SS,
or
CS
Never

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