Specifications

Appendix C: Configuring OMS (Mac OS 9 Only) 91
Disabling SerialDMA in OMS
Pro Tools requires that you deselect the “Use
Apple SerialDMA Driver When Available” op-
tion in OMS Setup. If you do not disable this op-
tion, problems will occur with MIDI and syn-
chronization functions in Pro Tools.
To disable SerialDMA in OMS:
1 Double-click the OMS Setup application.
2 Choose Edit > Preferences.
3 Deselect “Use Apple SerialDMA Driver When
Available,” and click OK.
4 Quit OMS Setup
MIDI Machine Control and the IAC Driver
If you are planning to use MIDI Machine Con-
trol (MMC) for Pro Tools synchronization with
other MMC-capable devices or applications, you
must rename the OMS IAC Driver and remove
the infinity symbol (“∞”) from its name. If you
do not do this, MMC will not function properly.
To edit the IAC driver’s name:
1 Double-click the OMS Setup application.
2 In the Studio Setup window, double-click the
IAC driver.
3 Rename “∞ IAC bus #1” to “MMC” and click
OK.
4 Save your changes.
5 Quit OMS Setup.
Studio Setup window with IAC Driver
Renaming the IAC Driver