FreeBSD Frickelware

I tried compiling the USB Audio driver on my Minimac.
Unfortunatly the uaudio(4) driver requires an ISA bus because it uses sndbuf_dmasetdir and sndbuf_dmabounce.
But the powerpc has no ISA bus…..
Luckily sound seems to work with a small patch. Now i just need a kernel hacker to write a nice portable solution.