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THE_NEXT_CODE_IS_SXEZSKOZ.

WITH_THIS_CODE,_IF_YOU_LET
MARIO_OR_LUIGI_DROP_TOO_LONG,
YOU_CAN'T_SKY_WALK_UNTIL_YOU
TOUCH_THE_GROUND_AGAIN.
WORK_THROUGH_THE_CODE_BY_HAND
TO_SEE_IF_YOU_UNDERSTAND
THE_DECODING_ALGORITHM.

        address = 0x8000 + 
              ((n3 & 7) << 12)
            | ((n5 & 7) << 8) | ((n4 & 8) << 8)
            | ((n2 & 7) << 4) | ((n1 & 8) << 4)
            |  (n4 & 7)       |  (n3 & 8);

        data =
             ((n1 & 7) << 4) | ((n0 & 8) << 4)
            | (n0 & 7)       |  (n7 & 8);
        
        compare =
             ((n7 & 7) << 4) | ((n6 & 8) << 4)
            | (n6 & 7)       |  (n5 & 8);
        
        A  0x0
        P  0x1
        Z  0x2
        L  0x3
        G  0x4
        I  0x5
        T  0x6
        Y  0x7
        E  0x8
        O  0x9
        X  0xA
        U  0xB
        K  0xC
        S  0xD
        V  0xE
        N  0xF

           n0   n1   n2   n3   n4   n5   n6   n7
           S    X    E    Z    S    K    O    Z
          0xD  0xA  0x8  0x2  0xD  0xC  0x9  0x2
         1101 1010 1000 0010 1101 1100 1001 0010

         address = 0xA485, data = 0xA5, compare = 0xA9