jdolecek@netbsd.org said:
> neo*   at pci? dev ? function ?
> audio* at neo? 

This is 1.5.x, there is no neo driver. And with -current,
be careful - the driver might hang your box. It did at least
for my Thinkpad 390. So have a working kernel around...
Your box seems to differ a bit from my one, at least my cpu
line reads (with -current):
cpu0: Intel Pentium II/Celeron (Deschutes) (686-class), 266.63 MHz
and the pnpbios:
pnpbios0: nodes 19, max len 145
So there might be more differences...

The sb at pnpbios attachment should work. wss at pnpbios is
better wrt features however.
For me it looks like:
wss0 at pnpbios0 index 21 (NMX2210)
wss0: io 220-22f 530-537 388-38f 300-301 120-121, irq 5, dma 0 1
wss0: CS4231 or AD1845
audio0 at wss0: full duplex, mmap
opl0 at wss0: model OPL3
midi0 at opl0: WSS Yamaha OPL3

I don't remember exactly, but it might be necessary to switch
on some "legacy support" or so in the BIOS setup.
If this doesn't help, you could build a kernel with PNPBIOSVERBOSE
and send me the output.

best regards
Matthias