On Sunday 10 February 2002 5:50 pm, Richard Earnshaw wrote:
> Right, so I've finally managed to lay my hands on an ISA sound card that I
> can put in my cats. (A SoundBlaster AWE64 for the record).  I didn't want
> to waste the final remaining PCI slot on a sound card, so I've been
> hunting round for an old ISA one (no-body uses them any more, so it took a
> while to track one down...
>
> Anyway, the card seems to work (in that I can get it to emit a sound), but
> after starting to use it the machine starts to lock up :-(
>
> Symptoms
>
> Card probes OK, giving
>
> isapnp0: read port 0x203
> isapnp0: No current device for tag, card 1
> sb0 at isapnp0 port 0x220/16,0x330/2,0x388/4 irq 5 drq 1,5
> sb0: Creative SB AWE64  PnP Audio: dsp v4.16
> audio0 at sb0: full duplex, mmap, independent
> opl0 at sb0: model OPL3
> midi at opl0 not configured
> joy0 at isapnp0 port 0x200/8
> joy0: Creative SB AWE64  PnP Game
> joy0: joystick not connected
> isapnp0: <Creative SB AWE64  PnP, CTL0022, , WaveTable> port 0x620/4 not
> configured
>
> Added sound devices in /dev
>
> Start to play an audio file, eg with audioplay.
>
> Machine plays file, but
>
> - Network locks up,
> - start to get io errors on the disk
> - eventually machine completely hangs

I get very similair effect when running X on my cats (so I don't).  I suspect 
it relates to port-cats/10502:
http://www.NetBSD.org/cgi-bin/query-pr-single.pl?number=10502

Which seems to be a case of the interrupt handling is really messed up, and 
eventually it can cause lockup.  I was talking to Jason, see if the new irq 
handling he's done for xscale would work better for cats.

Certainly the disk io, keyboard etc all seem to run off the ISA IRQ, your 
network won't if it's PCI.  You may stand a chance of getting to ddb if you 
boot with a serial console.

> Anyone have any ideas?  Given that the machine doesn't really fall over in
> any way that can be nailed down, I'm not really sure where to start on
> this one.
>
> Out of interest, has anyone managed to get a sound card to work on say the
> PCI bus.

Not tried, might try and pickup a cheap pci sound card somewhere though and 
see.

Cheers,
Chris