[mythtv] "Strange Error Flushing Buffer" problem

Ray mythtv-dev@snowman.net
Wed, 18 Dec 2002 09:00:17 -0700

Good post!, just adding a side note.

On Tue, Dec 17, 2002 at 04:21:24PM -0800, Harondel J. Sibble wrote:
> Typically you want to place your higher priority cards (ie high i/o bandwidth 
> using) in the lower numbered pci slots, most motherboards have the highest 
> priority slot closest to the agp slot.

Traditionally devices connected to higher priority IRQs (which may or may
not be assigned to the lower number slots) get first dibs on the processor. 
Also traditionally (but I doubt it still phisically works this way) thie
interrupt controller was actually 2 interrupt controllers with one slaved
off of the other, a bit like plugging one power strip into another.  This
slaving was off of IRQ2 so the interrupt priority went like this:

0, 1, 2&9, 10, 11, 12, 13, 14, 15, 3, 4, 5, 6, 7, 8

I don't know if modern interrupt controllers still emulate this behavior for
compatability reasons or not though.