81 строка
2.1 KiB
Plaintext
81 строка
2.1 KiB
Plaintext
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Sound Blaster 16X Vibra addendum
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--------------------------------
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by Marius Ilioaea <mariusi@protv.ro>
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Stefan Laudat <stefan@asit.ro>
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Sat Mar 6 23:55:27 EET 1999
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Hello again,
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Playing with a SB Vibra 16x soundcard we found it very difficult
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to setup because the kernel reported a lot of DMA errors and wouldn't
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simply play any sound.
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A good starting point is that the vibra16x chip full-duplex facility
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is neither still exploited by the sb driver found in the linux kernel
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(tried it with a 2.2.2-ac7), nor in the commercial OSS package (it reports
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it as half-duplex soundcard). Oh, I almost forgot, the RedHat sndconfig
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failed detecting it ;)
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So, the big problem still remains, because the sb module wants a
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8-bit and a 16-bit dma, which we could not allocate for vibra... it supports
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only two 8-bit dma channels, the second one will be passed to the module
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as a 16 bit channel, the kernel will yield about that but everything will
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be okay, trust us.
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The only inconvenient you may find is that you will have
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some sound playing jitters if you have HDD dma support enabled - but this
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will happen with almost all soundcards...
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A fully working isapnp.conf is just here:
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<snip here>
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(READPORT 0x0203)
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(ISOLATE PRESERVE)
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(IDENTIFY *)
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(VERBOSITY 2)
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(CONFLICT (IO FATAL)(IRQ FATAL)(DMA FATAL)(MEM FATAL)) # or WARNING
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# SB 16 and OPL3 devices
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(CONFIGURE CTL00f0/-1 (LD 0
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(INT 0 (IRQ 5 (MODE +E)))
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(DMA 0 (CHANNEL 1))
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(DMA 1 (CHANNEL 3))
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(IO 0 (SIZE 16) (BASE 0x0220))
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(IO 2 (SIZE 4) (BASE 0x0388))
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(NAME "CTL00f0/-1[0]{Audio }")
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(ACT Y)
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))
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# Joystick device - only if you need it :-/
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(CONFIGURE CTL00f0/-1 (LD 1
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(IO 0 (SIZE 1) (BASE 0x0200))
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(NAME "CTL00f0/-1[1]{Game }")
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(ACT Y)
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))
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(WAITFORKEY)
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<end of snipping>
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So, after a good kernel modules compilation and a 'depmod -a kernel_ver'
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you may want to:
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modprobe sb io=0x220 irq=5 dma=1 dma16=3
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Or, take the hard way:
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modprobe soundcore
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modprobe sound
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modprobe uart401
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modprobe sb io=0x220 irq=5 dma=1 dma16=3
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# do you need MIDI?
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modprobe opl3=0x388
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Just in case, the kernel sound support should be:
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CONFIG_SOUND=m
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CONFIG_SOUND_OSS=m
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CONFIG_SOUND_SB=m
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Enjoy your new noisy Linux box! ;)
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