Yamaha QY100 Data Filer Installation Manual page 17

CAfter starting up QY100 Data Filer, you can open the
PatchBay window to confirm how QY100 Data Filer is
configured with the Apple MIDI Driver.
You can also configure another sequencer program with
QY100 Data Filer or determine various other settings.
* When you want to use the QY100 Data Filer, open the "Chooser" in
the Apple menu and turn off Apple Talk.
* To access information about PatchBay, from the Apple menu, select
"About PatchBay".
* To run QY100 Data Filer on a Macintosh IIfx or certain Quadra models
requires that the "Serial Switch" be in the Control Panels folder, since
the serial port configuration for these computers is different from other
Macintosh models.
MIDI Manager
17