[issue676] SB600 HDA audio (Realtek ALC883) glitch - IRQ sharing?

[Joe "Floid" Kanowitz]

Joe "Floid" Kanowitz <jkanowitz at snet.net> added the comment:

>    Try compiling up a SMP kernel without APIC_IO, see if that works.

Will do tonight.

>    A lot of BIOSes have bugged MP tables.  IRQ 14 and 15 are fixed IRQs
>    used for the IDE controller when it runs in compatible mode (which is
>    almost always).  If IRQ 14 is specified as being an ISA interrupt,
>    then IRQ 15 had better be too.

Aha!  Per my last jabber in the NATA bug (566), the SB600 is unusual and
apparently really only has one legacy channel.  But does that impact anything
other than the warning?

I'll have to see if telling the BIOS to make the SATA controller(s) come up in
"Legacy IDE" mode changes the table; per
http://bugs.dragonflybsd.org/file264/dmesg.1.9PREVIEW-NATA2 , using "Native IDE"
didn't obey convention.  But of course even the legacy port is coming up on 3. 
That dmesg is stale, but the IRQs haven't changed.

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