I am trying to connect my QY70 to my titanium powerbook via the to host port . I have the required mac serial cable and the new Yamaha UW500 which also has a to host port. The problem lies in the lack of documentation for this type of interfacing.
Is it possible?
I wonder because yamaha say that an OMS compatible datafiler is available. Here is an extract from the XG FAQ page:

4. I want to use the QY data filer with the iMac.
4. If you are using a USB-MIDI interface, you will need the OMS-compatible QY data filer. This can be downloaded from the Yamaha website.


So what do I do?