Constants Definition:


ZERO    DEFW    0
        DEFW    0
        DEFB    128
TENTH   DEFW    0CCCDH
        DEFW    4CCCH
        DEFB    0FDH
TEN     DEFW    0
        DEFW    2000H
        DEFB    4
TWENTY  DEFW    0
        DEFW    2000H
        DEFB    5
EIGHTY  DEFW    0
        DEFW    2000H
        DEFB    7
ONE70   DEFW    0
        DEFW    2A00H
        DEFB    8
THRE60  DEFW    0
        DEFB    0
        DEFB    34H
        DEFB    9
KEYS    DEFB    0,1,4,7,16,17,2,5
        DEFB    8,18,19,3,6,9,20
        DEFB    21,12,11,10,22
MTRSPD  DEFB    0D0H