ADDD       Double Add without Carry
Category:  Arithmetic operation
Function:  ACCAB <-- (ACCAB) + (M:M+1)

Effects on the Condition Codes
H = N/A
I = N/A
N = R15
Z = ~R15&~R14&~R13&...&~R0
V = AB15&M15&~R15|~AB15&~M15&R15
C = AB15&M15|M15&~R15|~R15&AB15

ADDR    MNEM    OPER        1st     2nd     3rd
MODE    ONIC    FRMT        BYTE    BYTE    BYTE
________________________________________________

IMM     ADDD    #Imm        C3      ImmH    ImmL
DIR     ADDD    M           D3      M
EXT     ADDD    M           F3      MH      ML
INDEX   ADDD    Disp,X      E3      Disp