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MD80C88B
(Rev.:2008)
CMOS 8-/16-Bit Microprocessor
Intersil
MD80C88B Datasheet PDF : 38 Pages
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Instruction Set Summary
MNEMONIC AND
DESCRIPTION
DATA TRANSFER
MOV = MOVE:
Register/Memory to/from
Register
Immediate to Regis-
ter/Memory
Immediate to Register
Memory to Accumulator
Accumulator to Memory
Register/Memory to Seg-
ment Register
††
Segment Register to Reg-
ister/Memory
PUSH = Push:
Register/Memory
Register
Segment Register
POP = Pop:
Register/Memory
Register
Segment Register
XCHG = Exchange:
Register/Memory with
Register
Register with Accumula-
tor
IN = Input from:
Fixed Port
Variable Port
OUT = Output to:
Fixed Port
Variable Port
XLAT =
Translate Byte to
AL
LEA =
Load EA to
Register2
LDS =
Load Pointer to DS
LES =
Load Pointer to ES
LAHF =
Load AH with
Flags
SAHF =
Store AH into
Flags
PUSHF =
Push Flags
POPF =
Pop Flags
76543210
100010dw
1100011w
1 0 1 1 w reg
1010000w
1010001w
10001110
10001100
11111111
0 1 0 1 0 reg
0 0 0 reg 1 1 0
10001111
0 1 0 1 1 reg
0 0 0 reg 1 1 1
1000011w
1 0 0 1 0 reg
1110010w
1110110w
1110011w
1110111w
11010111
10001101
11000101
11000100
10011111
10011110
10011100
10011101
29
80C88
INSTRUCTION CODE
76543210
76543210
mod reg r/m
mod 0 0 0 r/m
data
addr-low
addr-low
mod 0 reg r/m
mod 0 reg r/m
mod 1 1 0 r/m
data
data if w 1
addr-high
addr-high
mod 0 0 0 r/m
mod reg r/m
port
port
mod reg r/m
mod reg r/m
mod reg r/m
76543210
data if w 1
FN2949.4
February 22, 2008
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