| 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_SOUND_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> |
