Re: [Qemu-devel] KVM call minutes for Feb 8

Gleb Natapov
2011-02-10T13:29:05Z

On Thu, Feb 10, 2011 at 03:00:05PM +0200, Avi Kivity wrote:
> On 02/10/2011 02:51 PM, Anthony Liguori wrote:
> >On 02/10/2011 12:13 PM, Gleb Natapov wrote:
> >>
> >>Which spec? Even in this discussion we completely mixed different
> >>things. 440FX is not a chipset.
> >
> >Yes, it is. It's a single silicon package with a defined pinout.
> >If you don't believe me, re-read the spec.
> >
> >It's a MCM with the PIIX3 being internally connected. The
> >connection between the i440fx and PIIX3 happens to be PCI but
> >that's not always the case. Sometimes it's a proprietary bus.
>
> Aren't they two distinct chips, together comprising the chip-set?
>
> One (the northbridge) converts the system bus to PCI + some extra
> wires, the other (southbridge) bridges PCI to ISA and contains some
> embedded ISA devices. IIRC there are some wires between them that
> are not PCI.
>
Yeah, 440fx is probably northbridge and PIIX3 southbridge.

--
Gleb.