may be I'm having some misunderstand...
Well, actually yes :-)
Sorry, I always try to help, but my bad english sometimes don't let me do it .
The Power Mac G4 is already hooked to an USB MIDI interface — an Emagic MT4. I linked a picture showing its OMS setup (visibile in the upper left corner of this screenshot):
The problem is that the Korg software seems to consider only the serial ports, ignoring the USB ones:
I was hoping I could circumvent this through OMS.
Well, I don't have an Oasys, but in the pages 18 to 22 of the Oasys PCI Installation Guide says this:
Configuring OMS (MacOS)
OMS allows the OASYS PCI’s MIDI functions to be accessed directly from OMS-
compatible MacOS software, including Cakewalk Metro, Cubase VST, Logic
Audio, Vision DSP, and Studio Vision Pro.
The instructions below assume that you have already installed OMS on your
computer.
Installing the OASYS PCI OMS Driver
OMS needs the OASYS PCI OMS Driver to communicate with the OASYS PCI.
The installer will place a copy of the OASYS PCI OMS Driver in the OMS folder,
within the System folder.
If this driver is removed from the OMS folder, OMS programs will not be able to
see the OASYS PCI. In this case, use the OASYS PCI installer program to re-install
the OASYS PCI OMS Driver.
Selecting OMS as the OASYS PCI MIDI system
To use the OASYS PCI with OMS software, you need to set the OASYS PCI to use
OMS as its MIDI system. To do this:
1. Open the OASYS PCI Editor program.
2. In the Edit menu, select “Preferences.”
The Preferences window will appear.
3. Click on the MIDI/Global tab.
The MIDI/Global preferences page will appear.
4. Set the MIDI System parameter to OMS.
The OASYS PCI will now use OMS as its MIDI system.
Adding the OASYS PCI to the OMS Studio Setup
Once the OASYS PCI OMS Driver is installed, OMS needs to be configured to add
the OASYS PCI to the Studio Setup. To do this:
1. Open the OMS Setup application.
The current OMS Studio Setup document will be opened.
2. In the Studio menu, select MIDI Cards & Interfaces.
A dialog box will appear.
3. Click the Update Setup button.
The OMS Driver Search window will appear.
4. De-select all of the serial ports.
It isn’t necessary to search the serial ports in this case, and de-selecting them will
make the search faster.
5. Click the Search button.
OMS will automatically detect the OASYS PCI, and add two devices to the Studio
Setup, named OASYS PCI A and OASYS PCI B. The OASYS PCI devices are not
connected to any serial ports or MIDI interfaces, since they connect directly to
OMS.
6. In the Edit menu, select OMS MIDI Setup.
The OMS MIDI Setup dialog will appear.
7. Enable the “Run MIDI in Background” checkbox.
This allows OMS MIDI programs to continue to play while you work in the OASYS
PCI Editor. If Run MIDI in Background is not enabled, switching from an OMS
MIDI sequencer to the OASYS PCI Editor will cause the sequencer to stop playing.
This will also prevent the MIDI Program from sending any MIDI data (including
MIDI from your controller keyboard) to the OASYS PCI.
8. Save the edited OMS setup.
The OASYS PCI will now appear in your OMS programs as two devices, OASYS
PCIA and OASYS PCIB, for a total of 32 MIDI channels.
Using the OASYS PCI with an OMS sequencer
When using the OASYS PCI with an OMS sequencer, we recommend enabling
MIDI patch-through in the sequencer, and disabling direct MIDI input to the
OASYS PCI. To do this:
1. Open the OASYS PCI Editor program.
2. In the Edit menu, select “Preferences.”
The Preferences window will appear.
3. Click on the MIDI/Global tab.
The MIDI/Global preferences page will appear.
4. Turn off the “Editor Responds to OMS/FreeMIDI Controllers” checkbox.
This is similar to the Local On/Off parameter found on some synthesizers. Turning
it off means that the OASYS PCI will not directly receive MIDI from MIDI
controllers. Instead, it will only respond to MIDI patched through from other OMS
programs, such as an OMS sequencer.
This setting prevents various strange things from happening, including phasing,
hung notes, and notes cutting off prematurely.
5. In the OMS sequencer, enable MIDI patch through.
This will patch the MIDI output of your controller through to the OASYS PCI. The
name of the parameter may vary depending on the particular OMS program being
used. Depending on the program, you also may need to select a track assigned to
the OASYS PCI, and/or record enable the track. Please consult the program’s
manual for details.
6.Read the OASYS PCI FAQ for more information on specific OMS programs.
The HTML-format OASYS PCI FAQ has detailed, step-by-step instructions for
setting up OASYS PCI with specific OMS programs, such as Vision, Cubase, and
Logic.
Using the OASYS PCI Editor as a stand-alone OMS program
When using the OASYS PCI Editor as a stand-alone synthesizer or effects
processor, without any other OMS program, you will need to enable direct MIDI
input to the OASYS PCI. To do this:
1. Open the OASYS PCI Editor program.
2. In the Edit menu, select “Preferences.”
The Preferences window will appear.
3. Click on the MIDI/Global tab.
The MIDI/Global preferences page will appear.
4. Turn on the “Editor Responds to OMS/FreeMIDI Controllers” checkbox.
This is similar to the Local On/Off parameter found on some synthesizers.
Turning it on means that the OASYS PCI will directly receive MIDI from MIDI
controllers.
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