1 Sound Blaster 16X Vibra addendum
2 --------------------------------
3 by Marius Ilioaea <mariusi@protv.ro>
4 Stefan Laudat <stefan@asit.ro>
6 Sat Mar 6 23:55:27 EET 1999
10 Playing with a SB Vibra 16x soundcard we found it very difficult
11 to setup because the kernel reported a lot of DMA errors and wouldn't
12 simply play any sound.
13 A good starting point is that the vibra16x chip full-duplex facility
14 is neither still exploited by the sb driver found in the linux kernel
15 (tried it with a 2.2.2-ac7), nor in the commercial OSS package (it reports
16 it as half-duplex soundcard). Oh, I almost forgot, the RedHat sndconfig
17 failed detecting it ;)
18 So, the big problem still remains, because the sb module wants a
19 8-bit and a 16-bit dma, which we could not allocate for vibra... it supports
20 only two 8-bit dma channels, the second one will be passed to the module
21 as a 16 bit channel, the kernel will yield about that but everything will
23 The only inconvenient you may find is that you will have
24 some sound playing jitters if you have HDD dma support enabled - but this
25 will happen with almost all soundcards...
27 A fully working isapnp.conf is just here:
35 (CONFLICT (IO FATAL)(IRQ FATAL)(DMA FATAL)(MEM FATAL)) # or WARNING
36 # SB 16 and OPL3 devices
37 (CONFIGURE CTL00f0/-1 (LD 0
38 (INT 0 (IRQ 5 (MODE +E)))
41 (IO 0 (SIZE 16) (BASE 0x0220))
42 (IO 2 (SIZE 4) (BASE 0x0388))
43 (NAME "CTL00f0/-1[0]{Audio }")
47 # Joystick device - only if you need it :-/
49 (CONFIGURE CTL00f0/-1 (LD 1
50 (IO 0 (SIZE 1) (BASE 0x0200))
51 (NAME "CTL00f0/-1[1]{Game }")
58 So, after a good kernel modules compilation and a 'depmod -a kernel_ver'
61 modprobe sb io=0x220 irq=5 dma=1 dma16=3
63 Or, take the hard way:
68 modprobe sb io=0x220 irq=5 dma=1 dma16=3
72 Just in case, the kernel sound support should be:
78 Enjoy your new noisy Linux box! ;)