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MICROPROCESSOR INSTRUCTION REFERENCE->ABCD
ABCD Add Decimal with Extend
Compatibility: 68000, 68010, 68020, CPU32 families
Destination + Source + X -> Destination
Assembler Syntax: ABCD Dy,Dx
ABCD -(Ay),-(Ax)
Size: Byte
Add the source operand to the destination operand and store the result in the destination location. The operands are packed BCD numbers and the operation is performed using binary coded decimal arithmetic.
Condition Codes:
N Undefined
Z Clear if result non-zero else unchanged
V Undefined
C Set if carry (decimal) else clear
X Set same as carry
bytes cycles
Dy,Dx 2 6
-(Ay),-(Ax) 2 18