Hardware Drivers
----------------
These drivers access to the sound hardware of the machine they run
on. Depending on your Unix flavor, you'll end with one or more drivers
from this list:
`drv_aix'
This driver is only available under AIX, and access its audio
device.
This driver only supports software mixing.
`drv_alsa'
This driver is only available under Linux, and requires the ALSA
driver to be compiled for your current kernel.
This driver only supports software mixing, but a future version of
the driver might be able to use the hardware capabilities of some
sound cards.
`drv_dart'
This driver is only available under OS/2 version 3 and higher
(Warp), and uses the "Direct Audio Real-Time" interface.
This driver only supports software mixing.
`drv_hp'
This driver is only available under HP-UX, and access its audio
device.
This driver only supports software mixing.
`drv_os2'
This driver is only available under OS/2 version 3 and higher
(Warp), and OS/2 2.x with MMPM/2.
This driver only supports software mixing.
`drv_oss'
This driver is available under any Unix with the Open Sound System
drivers installed. Linux and FreeBSD also come with the OSS/Lite
driver (the non-commercial version of OSS) and can make use of
this driver.
This driver only supports software mixing.
`drv_sam9407'
This driver is only available under Linux, and requires the Linux
sam9407 driver to be compiled for your current kernel.
This driver only supports hardware mixing.
`drv_sgi'
This driver is only available under IRIX, and uses the SGI audio
library.
This driver only supports software mixing.
`drv_sun'
This driver is only available under Unices which implement
SunOS-like audio device interfaces, that is, SunOS, Solaris,
NetBSD and OpenBSD.
This driver only supports software mixing.
`drv_ultra'
This driver is only available under Linux, and requires the Linux
Ultrasound driver (the ancestor of ALSA) to be compiled for your
current kernel.
This driver only supports hardware mixing.