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MICROPROCESSOR INSTRUCTION REFERENCE->SUBB

SUBB    Subtract Memory from accumulator B

B - M -> 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.:	SUBB #<exprn.>
Direct:	SUBB <exprn.>
Index X:	SUBB <exprn.>,X
Index Y:	SUBB <exprn.>,Y
Extend:	SUBB <exprn.>