>The question: why the new duplex code uses 16-bit dma for recording, and
Because you care to record with 16 bit. It could be selectable via ioctl
though but trust me, the current default is right.
>not for playing? Also how to fix the problem with direct dma buffer acces
The problem with quake probably is caused by the mmap handling. The sb
code continue to use the full-duplex hack even if mmap is used.
Andrea Arcangeli
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