Yamaha A4000 Owner's Manual page 26

OMS Port Setup
Having set up OMS, you now need to start up the A5000/A4000 Editor and set the OMS ports.
1. First, start up the A5000/A4000 Editor by double-clicking its icon.
n
If AppleTalk is enabled, you will get an alert message. Click "OFF." It will take some time for
AppleTalk to be disabled.
2. Choose "OMS Port Setup" from the A5000/A4000 Editor's "MIDI" menu, then select the port
settings. In the following example, the tone generator is an A5000 and its setups are
applied to OMS.
MIDI In: Select "A5000."
MIDI Out: Select "A5000."
3. Click [OK] to close OMS Port Setup.
26