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1 | OPL3-SA1 sound driver (opl3sa.o) | ||
2 | |||
3 | --- | ||
4 | Note: This howto only describes how to setup the OPL3-SA1 chip; this info | ||
5 | does not apply to the SA2, SA3, or SA4. | ||
6 | --- | ||
7 | |||
8 | The Yamaha OPL3-SA1 sound chip is usually found built into motherboards, and | ||
9 | it's a decent little chip offering a WSS mode, a SB Pro emulation mode, MPU401 | ||
10 | and OPL3 FM Synth capabilities. | ||
11 | |||
12 | You can enable inclusion of the driver via CONFIG_SOUND_OPL3SA1=m, or | ||
13 | CONFIG_SOUND_OPL3SA1=y through 'make config/xconfig/menuconfig'. | ||
14 | |||
15 | You'll need to know all of the relevant info (irq, dma, and io port) for the | ||
16 | chip's WSS mode, since that is the mode the kernel sound driver uses, and of | ||
17 | course you'll also need to know about where the MPU401 and OPL3 ports and | ||
18 | IRQs are if you want to use those. | ||
19 | |||
20 | Here's the skinny on how to load it as a module: | ||
21 | |||
22 | modprobe opl3sa io=0x530 irq=11 dma=0 dma2=1 mpu_io=0x330 mpu_irq=5 | ||
23 | |||
24 | Module options in detail: | ||
25 | |||
26 | io: This is the WSS's port base. | ||
27 | irq: This is the WSS's IRQ. | ||
28 | dma: This is the WSS's DMA line. In my BIOS setup screen this was | ||
29 | listed as "WSS Play DMA" | ||
30 | dma2: This is the WSS's secondary DMA line. My BIOS calls it the | ||
31 | "WSS capture DMA" | ||
32 | |||
33 | mpu_io: This is the MPU401's port base. | ||
34 | mpu_irq: This is the MPU401's IRQ. | ||
35 | |||
36 | If you'd like to use the OPL3 FM Synthesizer, make sure you enable | ||
37 | CONFIG_SOUND_YM3812 (in 'make config'). That'll build the opl3.o module. | ||
38 | |||
39 | Then a simple 'insmod opl3 io=0x388', and you now have FM Synth. | ||
40 | |||
41 | You can also use the SoftOSS software synthesizer instead of the builtin OPL3. | ||
42 | Here's how: | ||
43 | |||
44 | Say 'y' or 'm' to "SoftOSS software wave table engine" in make config. | ||
45 | |||
46 | If you said yes, the software synth is available once you boot your new | ||
47 | kernel. | ||
48 | |||
49 | If you chose to build it as a module, just insmod the resulting softoss2.o | ||
50 | |||
51 | Questions? Comments? | ||
52 | <stiker@northlink.com> | ||