Alex J Lennon wrote:
> Standard settings of 0x220, 5, 1, 5 except that the MPU401 is disabled
> as the Linux box seems to lock up with it enabled.
Yes, MPU401 emulation is not really there.
> The CPU is the MediaGX-233 with 5530 companion. I'm not sure about the
> VSA code version but I think it is the latest worker that was available
> from Cyrix back before NS took over.
There is a MS-DOS diagnostic utility called ATTEST that
NSC has passed me can check everything including the VSA
version. If you need that, I can pass to you.
> I did the mod. to 'sound_config.h' as you suggested and changed the
> DSP_BUFFSIZE
> from 64Kb to 32Kb (also tried 16Kb). Recompiled the modules (Kernel
> 2.2.12-20) and
> updated my LinuxBox with sb.o, sound.o, uart401.o.
> I checked that the DMA buffer sizes had actually changed with some printk()
> messaging.
> Unfortuately XMMS under GNOME (for example) is still playing .WAV files with
> lots of
> buzzing/clicking.
There is another VSA SMI bug that caused the clicking noise between
each DMA buffer is played. Upgrade to 2.2.13 or 2.2.14 to take
advantage of the patch (kernel message will have the message
"Working around Cyrix MediaGX virtual DMA bug.").
Regards,
T J
--
Chng Tiak-Jung [EMAIL PROTECTED]
Ericsson Research/Cyberlab Singapore Tel: +65-350-1649
510 Thomson Road, #18-00 Fax: +65-256-2403
SLF Building, Singapore 298135 http://www.ericsson.com/
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