IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

ARITHMETIC
ADD =Add
Reg./memory with register to either
1 0 0 0 0 0 0 d w I mod reg rIm I
Immediate to register/memory
~
11 0 0 0 0 0 s w
I
mod o 0 0 rim data data if s:w=01 I
~
Immediate to accumulator
1 0 0 0 0 0 1 0 w data data if w=l
I
ADC = Add with carry
Reg./memory with register to either
1 0 0 0 1 0 0 d w mod
I
reg rim
Immediate to register/memory
0 0 0 0 0 s w mod 0 1 0 rim data data if s:w=Ol I
11
1
Immediate to accumulator
0 0 0 1 0 1 0 w data data if w=l I
INC = Increment
Register/memory
1 1 1 1 1 1 1 w mod 0 o 0 rim
Register
I0 1 0 0 0 reg I
AAA = ASCII adjust for add
I 0 0 1 1 0 1 1
1 I
DAA = Decimal adjust for add
0 0 1 0 0 1 1 1 I
~
su B = Subtract
Reg./memory and register to either
I0 0 1 0 1 0 d w mod reg rim
I
Immediate from register/memory
11 0 0 0 0 0 s w mod 1 0 1 rim data data if s:w=Ol
I I
Immediate from accumulator
0 0 1 0 1 1 0 w data data if w=l
B-7