Documentation for the OPL3-SA2, SA3, and SAx driver (opl3sa2.o) --------------------------------------------------------------- Scott Murray, scottm@interlog.com January 5, 1999 NOTE: All trade-marked terms mentioned below are properties of their respective owners. This driver is for PnP soundcards based on the following Yamaha audio controller chipsets: YMF711 aka OPL3-SA2 YMF715 aka OPL3-SA3 YMF719 aka OPL3-SAx (?) I'm a little fuzzy on what exactly is classified a SAx, as I've seen the label used to refer to the whole 7xx family and as a specific identifier for the 719 on my no-name soundcard. To make matters worse, there seem to be several revisions of the 715 chipset. Anyways, all of these chipsets implement the following devices: OPL3 FM synthesizer Soundblaster Pro Microsoft/Windows Sound System MPU401 MIDI interface Note that this driver uses the MSS device, and to my knowledge these chipsets enforce an either/or situation with the Soundblaster Pro device and the MSS device. Since the MSS device has better capabilities, I have implemented the driver to use it. Being PnP cards, some configuration is required. There are two ways of doing this. The most common is to use the isapnptools package to initialize the card, and use the kernel module form of the sound subsystem and sound drivers. Alternatively, some BIOS's allow manual configuration of installed PnP devices in a BIOS menu, which should allow using the non-modular sound drivers, i.e. built into the kernel. I personally use isapnp and modules, and do not have access to a PnP BIOS machine to test. If you have such a beast, try building both the MSS driver and this driver into the kernel (appropriately configured, of course). I have received reports of this working, so it should be possible for most people with PnP BIOS. If it does not work for you, then email me if you are willing to experiment in an effort to make it work. ************************************************************************ * I have now had two such machines, and I have fixed this to work * properly when built into the kernel. The Toshiba Libretto series, or * at least models 70CT and 110CT which I have owned, use a Yamaha * OPL3-SAx (OPL3-SA3 according to documentation) sound chip, IRQ 5, * IO addresses 220/530/388/330/370 and DMA 1,0 (_not_ 0,1). All these * configuration settings can be gathered by booting another OS which * recognizes the card already. * * I have made things 'just work' for the non-modular case on such * machines when configured properly. * * David Luyer ************************************************************************ If you are using isapnp, follow the directions in its documentation to produce a configuration file. Here is the relevant excerpt I use for my SAx card from my isapnp.conf: (CONFIGURE YMH0800/-1 (LD 0 # Instead of (IO 0 (BASE 0x0220)), disable SB: (IO 0 (BASE 0x0000)) (IO 1 (BASE 0x0530)) (IO 2 (BASE 0x0388)) (IO 3 (BASE 0x0330)) (IO 4 (BASE 0x0370)) (INT 0 (IRQ 7 (MODE +E))) (DMA 0 (CHANNEL 0)) (DMA 1 (CHANNEL 3)) Here, note that: Port Acceptable Range Purpose ---- ---------------- ------- IO 0 0x0220 - 0x0280 SB base address, I set to 0 just to be safe. IO 1 0x0530 - 0x0F48 MSS base address IO 2 0x0388 - 0x03F8 OPL3 base address IO 3 0x0300 - 0x0334 MPU base address IO 4 0x0100 - 0x0FFE card's own base address for its control I/O ports The IRQ and DMA values can be any that considered acceptable for a MSS. Assuming you've got isapnp all happy, then you should be able to do something like the following (which matches up with the isapnp configuration above): insmod mpu401 insmod ad1848 insmod opl3sa2 io=0x370 mss_io=0x530 mpu_io=0x330 irq=7 dma=0 dma2=3 insmod opl3 io=0x388 Remember that the opl3sa2 module's io argument is for it's own control port, which handles the card's master mixer for volume (on all cards), and bass and treble (on SA3 and SAx cards). If all goes well and you see no error messages, you should be able to start using the sound capabilities of your system. If you get an error message while trying to insert the opl3sa2 module, then make sure that the values of the various arguments match what you specified in your isapnp configuration file, and that there is no conflict with another device for an I/O port or interrupt. Checking the contents of /proc/ioports and /proc/interrupts can be useful to see if you're butting heads with another device. If you still cannot get the module to load, look at the contents of your system log file, usually /var/log/messages. If you see the message "Unknown Yamaha audio controller version", then you have a different chipset than I've encountered so far. Look for a line in the log file that says "opl3sa2.c: chipset version = ". If you want me to add support for your card, send me the number from this line and any information you have on the make and chipset of your sound card, and I should be able to work up a permanent fix. If you do not see the chipset version message, and none of the other messages present in the system log are helpful, email me some details and I'll try my best to help. Lastly, if you're using modules and want to set up automatic module loading with kmod, the kernel module loader, here is the section I currently use in my modules.conf file: # Sound alias char-major-14 opl3sa2 pre-install opl3sa2 modprobe "-k" "ad1848" post-install opl3sa2 modprobe "-k" "opl3" options opl3sa2 io=0x370 mss_io=0x530 mpu_io=0x330 irq=7 dma=0 dma2=3 options opl3 io=0x388 That's all it currently takes to get an OPL3-SAx card working on my system. Once again, if you have any other problems, email me at the address listed above. Scott