both should work with both old- and new-config i386 trees.
Some notes:
bsd_audio.c has dependencies on the soundblaster. This should
be fixed, so that it can be used for the PC speaker
(when its driver has been modified), as well.
sb.c needs some cleanup, and will have sections trimmed, eventually
(when new config becomse standard for i386). additionally,
the SBPro support needs some cleanup.
