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MICROPROCESSOR INSTRUCTION REFERENCE->LDD
LDD Load double accumulator
(M+1) -> B, M -> A
Condition Code Register:
C Not affected
V Reset Always
Z Set if result Zero, else cleared
N Set if result Negative, else cleared
I Not affected
H Not affected
Addressing mode | Assembler syntax |
Immed.: | LDD #<exprn.> |
Direct: | LDD <exprn.> |
Index X: | LDD <exprn.>,X |
Index Y: | LDD <exprn.>,Y |
Extend: | LDD <exprn.> |