ADD              Addition                            Flags: O D I T S Z A P C
                                                            *       * * * * *
ADD destination,source

          Logic:    destination . destination + source

    ADD sums the operands and stores the result in destination. Both
    operands may be bytes or words, and both may be signed or unsigned
    binary numbers.

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   Operands                  Clocks   Transfers  Bytes   Example
                           Byte(word)
   register, register          3          -        2     ADD BX,CX
   accumulator, immediate      4          -       2-3    ADD AX,256
   register, immediate         4          -       3-4    ADD BL,4
   register, memory        9(13) + EA     1       2-4    ADD DI,[DX]
   memory, register       16(24) + EA     2       2-4    ADD TOTAL,BL
   memory, immediate      17(25) + EA     2       3-6    ADD RESULT,3
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