To configure the Crystal CS423x sound chip and activate its DSP functions, modules may be loaded in this order: modprobe sound insmod ad1848 insmod uart401 insmod cs4232 io=* irq=* dma=* dma2=* This is the meaning of the parameters: io--I/O address of the Windows Sound System (normally 0x534) irq--IRQ of this device dma and dma2--DMA channels (DMA2 may be 0) On some cards, the board attempts to do non-PnP setup, and fails. If you have problems, use Linux' PnP facilities. To get MIDI facilities add insmod opl3 io=* where "io" is the I/O address of the OPL3 synthesizer. This will be shown in /proc/sys/pnp and is normally 0x388.