80C88 datasheet(30/38 Pages) INTERSIL

30 / 38 page

FN2949.4

February 22, 2008

ARITHMETIC

ADD = Add:

0 0 0 0 0 0 d w

mod reg r/m

Immediate to Regis-

ter/Memory

1 0 0 0 0 0 s w

mod 0 0 0 r/m

data

data if s:w = 01

Immediate to Accumula-

tor

0 0 0 0 0 1 0 w

data

data if w = 1

ADC = Add with Carry:

0 0 0 1 0 0 d w

mod reg r/m

Immediate to Regis-

ter/Memory

1 0 0 0 0 0 s w

mod 0 1 0 r/m

data

data if s:w = 01

Immediate to Accumula-

tor

0 0 0 1 0 1 0 w

data

data if w = 1

INC = Increment:

1 1 1 1 1 1 1 w

mod 0 0 0 r/m

0 1 0 0 0 reg

AAA = ASCll Adjust for

Add

0 0 1 1 0 1 1 1

DAA = Decimal Adjust for

Add

0 0 1 0 0 1 1 1

SUB = Subtract:

0 0 1 0 1 0 d w

mod reg r/m

Immediate from Regis-

ter/Memory

1 0 0 0 0 0 s w

mod 1 0 1 r/m

data

data if s:w = 01

Immediate from Accumu-

lator

0 0 1 0 1 1 0 w

data

data if w = 1

SBB = Subtract with

Borrow

0 0 0 1 1 0 d w

mod reg r/m

Immediate from Regis-

ter/Memory

1 0 0 0 0 0 s w

mod 0 1 1 r/m

data

data if s:w = 01

Immediate from Accumu-

lator

0 0 0 1 1 1 0 w

data

data if w = 1

DEC = Decrement:

1 1 1 1 1 1 1 w

mod 0 0 1 r/m

0 1 0 0 1 reg

NEG = Change Sign

1 1 1 1 0 1 1 w

mod 0 1 1 r/m

CMP = Compare:

0 0 1 1 1 0 d w

mod reg r/m

Immediate with Regis-

ter/Memory

1 0 0 0 0 0 s w

mod 1 1 1 r/m

data

data if s:w = 01

Instruction Set Summary (Continued)

MNEMONIC AND

DESCRIPTION

INSTRUCTION CODE

7 6 5 4 3 2 1 0

80C88

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