gee, im not sure he does...
If I'm getting you right, I need to create a drum pattern in the computer and set the 909 to receive midi then change the shuffle to check it out?
...first, that does end with a question mark, so he does not, in fact, know...second, if the drum pattern is in the pc computer, the 909 shuffle is not going to work...dont be so hostile to people who are tryin to help