Changes
== Weblink ==
https://pulkomandy.github.io/shinra.github.io/willy.html
== Technical information ==
2 ports are used to control the MIDI soundcard: &FEAC for data, and &FEAD for control and status.
3 ports are used to control the OPL3 soundcard: &FEBC and &FEBE are register select ports, and &FEBD is the data port.
== Datasheets ==
