"Graham Murray" <newspost@gmurray.org.uk> wrote in message
news:878x1aa38m.fsf@newton.gmurray.org.uk...[color=blue]
> Steve <steev_l@yahoo.co.uk> writes:
>[color=green]
>> How necessary is SPI in reality, for a home router?[/color]
>
> Would you even know is a router has SPI unless you look at the part
> numbers of the chips on the board and see if a) They support the Serial
> Peripheral Interface and b) that the appropriate pins are wired to other
> chip(s) which also support SPI. Whether SPI is used should be a decision
> for the hardware designer and be of no interest to the user, unless
> the SPI bus is brought to a connector for an add-on board - but even
> then unless the user is going to design his own add-on board this will
> be of no interest to the user.[/color]

I think we are talking about Stateful Packet Inspection here,
[url]http://en.wikipedia.org/wiki/Stateful_firewall[/url]

--
Graham

%Profound_observation%