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MICROPROCESSOR INSTRUCTION REFERENCE->SUBD

SUBD    Subtract Memory from double accumulator

A:B - M:(M+1) -> A:B

Condition Code Register:

C  Set if carry generated, else cleared
V  Set on overflow, else cleared
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.:	SUBD #<exprn.>
Direct:	SUBD <exprn.>
Index X:	SUBD <exprn.>,X
Index Y:	SUBD <exprn.>,Y
Extend:	SUBD <exprn.>