Abit SL6 User Manual page 61

BIOS Setup
Midi Port IRQ:
Two options are available: 5 ) 10. The default setting is 10. This item sets the IRQ of the
onboard midi port connector. If you choose disable the Midi Port Address, then this field is
not available.
If you buy the audio adapter and want to replace the use of onboard audio solution, you
have to disable three items in BIOS. Otherwise, your audio adapter may not work well.
These three items are:
AC 97 Audio set to Disabled
Game Port Address set to Disabled
Midi Port Address set to Disabled
Note
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User's Manual