Re: [LinuxBIOS] another question for cs5536

[Marc Jones]

Peter Stuge wrote:
> On Thu, Jul 05, 2007 at 10:34:53PM +0800, Songmao Tian wrote:
> > with regard to interrupt signal, I am still puzzled with the
> > PCI_INTA#, it is said that it's a input io. Shouldn't it output
> > the interrupt signal to cpu?
>
> I suspect it is the signal facing PCI devices.
>
> The signal facing the CPU is probably inside the GeodeLink somewhere.
>
> //Peter

Peter is correct. The PCI_INTA# from the CPU(northbridge) to the cs5536 
is for graphics and/or AES egine interrupts. The interrupt signal(INTR#) 
from the cs5536 to the CPU is in the sideband serial packet.  Look for 
"CPU Interface Serial (CIS)" in the 5536 databook for more information.

Marc