LDD        Double LoaD accumulator A:B
Category:  Load and store
Function:  ACCAB <-- (M:M + 1)

Effects on the Condition Codes
H = N/A
I = N/A
N = R15
Z = ~R15&~R14&~R13&...&~R0
V = 0
C = N/A

ADDR    MNEM    OPER        1st     2nd     3rd
MODE    ONIC    FRMT        BYTE    BYTE    BYTE
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IMM     LDD     #Imm        CC      Imm
DIR     LDD     M           DC      M
EXT     LDD     M           FC      MH      ML
INDEX   LDD     Disp,X      EC      Disp