<A HREF="SID23.HTM">$D417/54295/SID+23</A>      Filter Resonance Control / Voice Input Control
  |   <A HREF="SID24.HTM">$D418/54296/SID+24</A>      Select Filter Mode and Volume
  |   <A HREF="SID25.HTM">$D419/54297/SID+25</A>      Analog/Digital Converter: Game Paddle 1
  |   <A HREF="SID26.HTM">$D41A/54298/SID+26</A>      Analog/Digital Converter: Game Paddle 2
  |   <A HREF="SID27.HTM">$D41B/54299/SID+27</A>      Oscillator 3 Output
  |   <A HREF="SID28.HTM">$D41C/54300/SID+28</A>      Envelope Generato