Kernel panic with audioplay

Hello

Not sure how many people are still on this list but...
Dug up my dreamcast to try netbsd-8 on it. It booted fine (but I can't remember ip upload slave being this slow).
However as soon I try to run audioplay the kernel crashes.
Transcribed crash below:
# audioplay
panic: tlb_exception: no copyin/out fault handler (page not found)
expevt=60 va=c212bfc0 ssr=40000100 spc=8c131152 lwp=8cc88980 onfault=0x0
Stopped in pid 420.1 (audioplay) at    netbsd:cpu_Debugger+0x2        rts
db> bt
cpu_Debugger() at netbsd:vpanic+0x108
kernel mode trap: address error (load) code = 0x0
[pc 0, pr 8c01b49a]: Faulted in DDB; continuing...
db>

Anyone got any ideas?

/B