1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
52 lines
1.7 KiB
Text
52 lines
1.7 KiB
Text
OPL3-SA1 sound driver (opl3sa.o)
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---
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Note: This howto only describes how to setup the OPL3-SA1 chip; this info
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does not apply to the SA2, SA3, or SA4.
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---
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The Yamaha OPL3-SA1 sound chip is usually found built into motherboards, and
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it's a decent little chip offering a WSS mode, a SB Pro emulation mode, MPU401
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and OPL3 FM Synth capabilities.
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You can enable inclusion of the driver via CONFIG_SOUND_OPL3SA1=m, or
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CONFIG_SOUND_OPL3SA1=y through 'make config/xconfig/menuconfig'.
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You'll need to know all of the relevant info (irq, dma, and io port) for the
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chip's WSS mode, since that is the mode the kernel sound driver uses, and of
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course you'll also need to know about where the MPU401 and OPL3 ports and
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IRQs are if you want to use those.
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Here's the skinny on how to load it as a module:
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modprobe opl3sa io=0x530 irq=11 dma=0 dma2=1 mpu_io=0x330 mpu_irq=5
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Module options in detail:
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io: This is the WSS's port base.
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irq: This is the WSS's IRQ.
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dma: This is the WSS's DMA line. In my BIOS setup screen this was
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listed as "WSS Play DMA"
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dma2: This is the WSS's secondary DMA line. My BIOS calls it the
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"WSS capture DMA"
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mpu_io: This is the MPU401's port base.
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mpu_irq: This is the MPU401's IRQ.
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If you'd like to use the OPL3 FM Synthesizer, make sure you enable
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CONFIG_SOUND_YM3812 (in 'make config'). That'll build the opl3.o module.
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Then a simple 'insmod opl3 io=0x388', and you now have FM Synth.
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You can also use the SoftOSS software synthesizer instead of the builtin OPL3.
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Here's how:
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Say 'y' or 'm' to "SoftOSS software wave table engine" in make config.
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If you said yes, the software synth is available once you boot your new
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kernel.
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If you chose to build it as a module, just insmod the resulting softoss2.o
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Questions? Comments?
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<stiker@northlink.com>
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