[alsa-devel] [PATCH] ALSA: Support Media Vision Jazz16 chips

Rene Herman rene.herman at gmail.com
Thu Mar 29 23:46:36 CEST 2007

On 03/29/2007 01:20 AM, Rask Ingemann Lambertsen wrote:

>> Playback sounds normal except for a click for each "pointer ..."
>> message. Any ideas? /proc/interrupts increments by 11.
> This additional patch fixes it:

Mmm, well, that looks like it makes sense...

I checked the MPU IRQs (you allow 2/9, 3, 5, 7, 10, 15 while the DOS 
driver only allows 2/9, 3, 5, 7).

All of 2/9, 3, 5, 7, and 10 work fine here and 15 does not work. 15 also 
doesn't work here for the Jazz IRQ though while the DOS driver does 
allow 15 for that one, so I expect that's a local problem (no, nothing 
evident; no IDE, 15 reserved for ISA, ...). If you need me to I'll try 
in a different machine, but if 15 works fine for the Jazz IRQ for you, 
I'd write it not working for either IRQ for me off as an uninteresting 

The Jazz16 has nice MPU-401 behaviour by the way; if I sent MIDI to its 
gameport, it loops it back out immediately unless I'm actually recording 
it from the Jazz16. That's sort of nice for testing...

I also checked the 210, 230 and 250 base values the DOS driver allows me 
to set the "Jazz16 I/O Port" to and all of those work fine. A change to 
jazz16pnp is attached as the first attachment. Has been tested, works fine.

Lastly, how would you feel about setting the DOS/Windows default 
resource values as the preffered values and all the others as mere 
acceptable? This will help keep the behaviour consistent over dual 
booting for one, and is more in line with any documentation someone 
might have on their card.

Ie, something like the second attachment (on top of first). Has also 
been tested, and also works fine.

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