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ASCII Adjust After Addition                      Flags:  O D I T S Z A P C
                                                         ═════════════════
Syntax:  AAA                                             ?       ? ? ± ? ±
 
  Adjusts the result of an addition to a decimal digit (0-9). The previous
  addition instruction should place its 8-bit sum in AL. If the sum is
  greater than 9h, AH is incremented and the carry and auxiliary carry
  flags are set. Otherwise, the carry and auxiliary carry flags are cleared.
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