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author | sheldonh <sheldonh@FreeBSD.org> | 2000-07-22 10:23:06 +0000 |
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committer | sheldonh <sheldonh@FreeBSD.org> | 2000-07-22 10:23:06 +0000 |
commit | 85976e9542a8a8c3f4b13abe8afd4e13361785f9 (patch) | |
tree | 76a21a375a6838fe50738c0e1886f5327083843b /share/man/man4/pcm.4 | |
parent | db0fcdfb3737db3fc16dca5f389b3f4a55d36e6c (diff) | |
download | FreeBSD-src-85976e9542a8a8c3f4b13abe8afd4e13361785f9.zip FreeBSD-src-85976e9542a8a8c3f4b13abe8afd4e13361785f9.tar.gz |
Rework the FILES section to cover the list of common symbolic links
in the /dev directory. Also cover this driver's quirky relationship
with the MAKEDEV script.
Diffstat (limited to 'share/man/man4/pcm.4')
-rw-r--r-- | share/man/man4/pcm.4 | 65 |
1 files changed, 53 insertions, 12 deletions
diff --git a/share/man/man4/pcm.4 b/share/man/man4/pcm.4 index 32865e5..9387b07 100644 --- a/share/man/man4/pcm.4 +++ b/share/man/man4/pcm.4 @@ -124,19 +124,60 @@ Creative Labs SoundBlaster PCI is supported as well. .Pp .El .Sh FILES -.Bl -tag -width /dev/snd* -compact -.It Pa /dev/snd* -Device nodes created with the shell commands -.Bk -words -.Ql cd /dev; sh MAKEDEV snd0 -.Ek -for the pcm0 device, -.Bk -words -.Ql cd /dev; sh MAKEDEV snd1 -.Ek -for the pcm1 device, -etc. +The following commonly used symbolic links to real device nodes +should be present: +.Pp +.Bl -tag -width /dev/sequencer -compact +.It Pa /dev/audio +Sparc-compatible audio device +.It Pa /dev/dsp +Digitized voice device +.It Pa /dev/dspW +Like +.Pa /dev/dsp , +but 16 bits per sample +.It Pa /dev/midi +Raw midi access device +.It Pa /dev/mixer +Control port mixer device +.It Pa /dev/music +Level 2 sequencer interface +.It Pa /dev/sequencer +Sequencer device +.It Pa /dev/pss +Programmable device interface .El +.Pp +Each symbolic link refers to a device node of the same name, +but with a unit number appended. +The unit number for each device matches the unit number of the +device probed at boot time. +Device probe messages can be examined with the +.Xr dmesg 8 +utility. +.Pp +All the appropriate device nodes and symbolic links +for the +.Ql pcm0 +device would created with the following commands: +.Bd -literal -offset indent +cd /dev; sh MAKEDEV snd0 +.Ed +.Pp +Similarly, the device nodes and symbolic links for the +.Ql pcm1 +device would be created as follows: +.Bd -literal -offset indent +cd /dev; sh MAKEDEV snd1 +.Ed +.Pp +Since the +.Pa /dev/MAKEDEV +utility creates symbolic links that will be used by +many utilities by default, +the device nodes and symbolic links for the +preferred audio device in systems with multiple audio devices +should be created last. .Sh DIAGNOSTICS AND TROUBLESHOOTING .Bl -tag -width 2m .It ac97: dac not ready |