Nevermind, it does output all of them. They're tied to the outputs "lamps", "lampk", "lampy", "lampd", "lampi", "lampv", "lampe", and "lampr".
So you'd just set up an entry in the mameoutputs.ini file (if its not there) a [skydiver] section and map those eight outputs to the correct eight outputs on your LED driver board, and it'll just work.