Messages in this thread |  | | Date | Wed, 30 Oct 2002 18:52:54 +0100 | | From | Takashi Iwai <> | | Subject | Re: [PATCHSET 22/25] add support for PC-9800 architecture (sound alsa) |
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At Wed, 30 Oct 2002 02:43:22 +0900, Osamu Tomita wrote: > > Takashi Iwai wrote: > > > > Hi, > > > > the attached is a patch to create a new driver module, > > snd-pc98-cs4232, which supports CS4232 on PC9800 and PC98II MPU > > daughterboard. (if you find the module name weird, please change as > > you like. the name is tentative :) > > in this patch, almost all pc98-specific hardware initialization is > > done in the card module, hence the changes to common modules become > > minimum. > (snip) > > please check whether it works for you. if it's ok, i'd like to merge > > it into alsa cvs, so the changes will be sent as ALSA update patches > > later. > Thank you very much. I'm testing patch. And found some problems. > sound/drivers/opl3/Makefile, sound/core/Makefile, sound/core/seq/Makefile > and sound/core/seq/instr/Makefile needed additional patch for compile.
oops, yes, thanks.
> PCM works fine. But mpu401 plays very slow tempo. I can't find reason > yet.
do you mean that the interrupts are generated too slowly? you can measure how many UART interrupts are generated per second by checking /proc/interrupts. if it's too little, the problem is likely in the hardware initialization part, which i simply copied from your patch. but it could be a wrong copy & paste. please check pc98_mpu401_init() in pc98.c.
btw, which MPU mode are you using, PC98II or normal MPU401?
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