Messages in this thread | | | Date | Sat, 11 Dec 2004 15:23:14 -0500 | From | Jim Paris <> | Subject | Re: PCI IRQ problems -- update |
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> The PIIX should be in legacy mode by default in which case it would be > on IRQ 14/15 only. Can you post boot messages ?
This is interesting:
$ lspci -x -s 1f.1 0000:00:1f.1 IDE interface: Intel Corp. 82801CAM IDE U100 (rev 02) 00: 86 80 8a 24 07 00 80 02 02 8e 01 01 00 00 00 00 10: f1 01 00 00 f5 03 00 00 01 00 00 00 01 00 00 00 20: 41 18 00 00 00 00 10 e0 00 00 00 00 f7 10 38 83 30: 00 00 00 00 00 00 00 00 00 00 00 00 ff 01 00 00
The ICH3-M datasheet says offset 0x09 is the Programming Interface register. Default value is 0x8A (legacy on both), value here is 0x8E (legacy on primary, native on secondary). This mixed-mode setting is noted as a disallowed combination in the datasheet.
So it looks like my BIOS is screwing me. Where could/should I fix this up?
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