S
    T        S
    A        T
    R        O
    T01234567P
<font color="blue">'A' </font><font color="red">0</font><font color="blue">10000010</font><font color="green">1</font>
<font color="blue">inv</font> <font color="yellow">1</font><font color="red"></font><font color="red">0</font><font color="blue">11111010</font>
Rx:  S01234567 -> 01011111b -> '_'
     T
     A
     R
     T