>In some mail I received from Justin T. Gibbs, sie wrote
>> 
>> >Is the sharing problem with the Adaptec?  I have a machine here which
>> >seem to share two IRQs between two NICS quite happily.  I have
>> >dc21140-based Ethernet in in now sharing an IRQ with a gigabit NIC,
>> > but a couple of months ago it had a 3c595 and that seemed to work
>> >okay, modulo defining _LOSING_COMPILER.
>> 
>> I don't think that the Adaptec's have any intrinsic problem with
>> sharing interrupts.  In Pluto's "Digital Space Recorder", there are
>> 20 aic7880 chips split between 2 hardware interrupts and they run
>> just fine under FreeBSD.
>
>well, freebsd 2.2.1 doesn't get past probing the scsi bus when the adaptec
>driver shares an interrupt with one of the NICs.

   I'm not sure why FreeBSD is being discussed on the port-i386@netbsd.org
list, but just to confirm: wcarchive was sharing interrupts between multiple
aic7880 chips and the PCI Intel Pro/100B for about 6 months without any
trouble. This was on a SuperMicro P6DNF. I rearranged the cards recently
to eliminate the sharing to improve performance a bit, but other than
performance being affected slightly, there were no other side effects in
either configuration.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project