0 to FFH
Ones:
Bit0: Position 1 direction
Bit1: Position 2 direction
Bit2: Position 3 direction
Bit3: Position 4 direction
Tens:
Bit0: Position 5 direction
Bit1: Position 6 direction
Bit2: Position 7 direction
Bit3: Position 8 direction
0: Same as the running
direction
1: Opposite to the running
direction