I'd hook the midiout of the drum machine to the midi in of RB or PT, select that midi input port as the main default port, and then hit the pads and watch the keyboard display at the top of PT to see what notes its triggering.
OR record each pad in order and look at it in the event list to see what notes its triggering now.
Usually a Roland machine will be pretty close to GM specs right off the bat.


I do not work here, but the benefits are still awesome
Make your sound your own!