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MICROPROCESSOR INSTRUCTION REFERENCE->SBCD

SBCD   Subtract Decimal with Extend

Compatibility: 68000, 68010, 68020 and CPU32 families.


Destination - Source - X  -> Destination

Assembler Syntax:	SBCD Dy,Dx
	SBCD -(Ay),-(Ax)

Size:  Byte

Subtracts the source operand and the extended bit from the destination operand and stores the result in the destination location.  The subtraction is performed using binary coded decimal arithmetic.


Condition Codes:

N    Undefined
Z    Clear if result <> 0 else unchanged
V    Undefined
C    Set if borrow (decimal) else clear
X    Set same as carry