OPL3-SA
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上传日期:2013-04-10
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- OPL3-SA1 sound driver (opl3sa.o)
- ---
- Note: This howto only describes how to setup the OPL3-SA1 chip; this info
- does not apply to the SA2, SA3, or SA4.
- ---
- The Yamaha OPL3-SA1 sound chip is usually found built into motherboards, and
- it's a decent little chip offering a WSS mode, a SB Pro emulation mode, MPU401
- and OPL3 FM Synth capabilities.
- You can enable inclusion of the driver via CONFIG_SOUND_OPL3SA1=m, or
- CONFIG_SOUND_OPL3SA1=y through 'make config/xconfig/menuconfig'.
- You'll need to know all of the relevant info (irq, dma, and io port) for the
- chip's WSS mode, since that is the mode the kernel sound driver uses, and of
- course you'll also need to know about where the MPU401 and OPL3 ports and
- IRQs are if you want to use those.
- Here's the skinny on how to load it as a module:
- modprobe opl3sa io=0x530 irq=11 dma=0 dma2=1 mpu_io=0x330 mpu_irq=5
- Module options in detail:
- io: This is the WSS's port base.
- irq: This is the WSS's IRQ.
- dma: This is the WSS's DMA line. In my BIOS setup screen this was
- listed as "WSS Play DMA"
- dma2: This is the WSS's secondary DMA line. My BIOS calls it the
- "WSS capture DMA"
-
- mpu_io: This is the MPU401's port base.
- mpu_irq: This is the MPU401's IRQ.
- If you'd like to use the OPL3 FM Synthesizer, make sure you enable
- CONFIG_YM3812 (in 'make config'). That'll build the opl3.o module.
- Then a simple 'insmod opl3 io=0x388', and you now have FM Synth.
- You can also use the SoftOSS software synthesizer instead of the builtin OPL3.
- Here's how:
- Say 'y' or 'm' to "SoftOSS software wave table engine" in make config.
- If you said yes, the software synth is available once you boot your new
- kernel.
- If you chose to build it as a module, just insmod the resulting softoss2.o
- Questions? Comments?
- <stiker@northlink.com>