Squeak,

There may be more to this than I can help you with depending on what your drum machine will do, and what you want it to do. On the PSR8000 with my old Yamaha RX5, I can get the patterns of the RX5 to play simply by setting the Sync feature to MIDI. connect MIDI out of the keyboard to MIDI in of the drum machine. Then I have to turn the acmp volume all the way down on the keyboard, so I don't hear both drum patterns. The RX5 also has bass, guitar and brass sounds, etc. If those sounds are in a pattern, they will play, but they will not change chords from the 8000, whether or not I have the accompaniment turned on. I can start/stop the song from the PSR, and I can change the tempo. Thats it. Let me know if I can help more.

Midnite
Midnite