Reply 20 of 28, by boxpressed
In some motherboards (like Abit BE6-II) even with disabled ACPI, ISA cards can't use IRQ9, because manufacturer reserved this interrupt for SMBus. However, it's possible to reclaim IRQ9 - by modifying value in southbridge (in our case, the 82371AB/EB) internal register SMBHSTCFG. I used this program http://www.o3one.org/hwdocs/lsilogic/pci.exe to check if this fix is effective and yes, WSS in YMF719 could finally use IRQ9. But to make this fix permanent, proper BIOS modification have to be done.
Ah, thanks for the info. I think that rather than try to force a fix, I will just use this card with 486 and lower builds. I don't have a Pentium system ready to test, but I will eventually put one together. I will try it with my Socket A system (VIA KT133A), but I expect it to be the same as the BX and MVP3 systems in this regard.