/dev files, mfs, audio, startup etc.

[Aleksey Cheusov <cheusov%tut.by@localhost>]

For some unknown reason /dev/audio, /dev/mixer and /dev/sound
files are not present on my system.

dmesg:
  auvia0 at pci0 dev 17 function 5: VIA Technologies VT8233A AC'97 Audio (rev 
0x40)
  auvia0: interrupting at irq 10
  auvia0: ac97: Avance Logic ALC200/ALC201 codec; headphone,
            18 bit DAC, 18 bit ADC, Realtek 3D
  auvia0: ac97: ext id 605<AC97_22,AMAP,SPDIF,VRA>
  audio0 at auvia0: full duplex, mmap, independent
  isa0 at pcib0

Q1) Why these device files are absent?

According to NetBSD Guide
    (http://www.netbsd.org/docs/guide/en/chap-audio.html)
in this case it is possible to create these devices by hand.


chen# df -i /dev
Filesystem  1K-blocks      Used     Avail Capacity  iused    ifree  %iused  
Mounted on
mfs:18             56        48         5    89%     1157      121    90%   /dev
chen# cd /dev/
chen# ./MAKEDEV all

/dev: create/symlink failed, no inodes free
mknod: ttyCZ0017: No space left on device
/dev: create/symlink failed, no inodes free
mknod: dtyCZ0017: No space left on device 
/dev: create/symlink failed, no inodes free
mknod:


Q2) Is NetBSD Audio chapter ok or out-of-date?

Q3) What should I do in order to enable my audio card.
    Some time ago, it definitely worked just fine.

NetBSD chen.chizhovka.net 4.0_STABLE NetBSD 4.0_STABLE (GENERIC)
       #0: Wed Jul 16 00:28:58 EEST 2008
       
cheusov%chen.chizhovka.net@localhost:/srv/obj/sys/arch/i386/compile/GENERIC i386

P.S.
Some other /dev files are absent too (after startup).
/dev/pf, /dev/pts, /dev/ptm and many others.

What files are created at NetBSD startup?
Where this process is documented?

-- 
Best regards, Aleksey Cheusov.