Problems with Yamaha opl3sa2 soundcard

I have a problem with my soundcard- opl3sa2.
1) Knoppix v4.0.0 doesn't recognize the soundcard, but ALSA do.
2) when the soundcard is configured by ALSA and I start playing the music, computer automatically reboots
3) my computer is old PentiumII 400MHz, 196MB RAM,
Please, help me to configure the soundcard :(

this is what I have:

root@3[dev]# lspci -v
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT82C585VP [Apollo VP1/VPX] (rev 23)
Flags: bus master, 66MHz, medium devsel, latency 64

0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 41)
Flags: bus master, stepping, medium devsel, latency 0

0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Flags: bus master, medium devsel, latency 32
I/O ports at fff0 [size=16]

0000:00:07.3 Non-VGA unclassified device: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
Flags: medium devsel

0000:00:08.0 Ethernet controller: VIA Technologies, Inc. VT6105 [Rhine-III] (rev 8b)
Subsystem: VIA Technologies, Inc.: Unknown device 0105
Flags: bus master, medium devsel, latency 64, IRQ 9
I/O ports at df00 [size=256]
Memory at ffeeff00 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Power Management version 2

0000:00:0a.0 Multimedia video controller: 3Dfx Interactive, Inc. Voodoo 2 (rev 02)
Flags: fast devsel
Memory at f6000000 (32-bit, prefetchable) [size=16M]

0000:00:0b.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01) (prog-if 00 [VGA])
Subsystem: S3 Inc. ViRGE/DX
Flags: bus master, medium devsel, latency 64
Memory at f8000000 (32-bit, non-prefetchable) [size=64M]
Expansion ROM at ffef0000 [disabled] [size=64K]