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Author Topic: Troika Website Launch  (Read 11634 times)

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Offline ppc4me

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Re: Troika Website Launch
« on: September 10, 2005, 03:39:28 PM »
@billt:

>Anything we're going to see in our market will
>either use Articia or have to use an FPGA chip
>to build a PCI to AGP bridge, which is then
>limited to PCI bandwidth.

PCI-X 1.0 has the bandwidth of AGP4x.
Ole-Egil's prefered PPC440SPe chip provides
PCI-X 2.0 with a bandwidth similar to AGP8x.

>Pegasos2 does this, and that may be acceptable.

Are you sure?

>If so, why not just use a PCI to PCI-Express
>bridge and have the even newer graphics cards
>available to you?

Sure - only who writes the drivers and will they
be available for all systems that can make use of
that particular PCI-PCIe bridge card?

>If anyone would start a new design today, I'd
>say he's crazy to put any effort into an FPGA
>AGP bridge, as AGP is already on its way out.

Just a moment please - can you point me to the
"FPGA" on the Pegasos II board that according to
your opinion bridges the PCI to AGP?
I am not entirely sure there actually is one,
but maybe you have more insight...
 

Offline ppc4me

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Re: Troika Website Launch
« Reply #1 on: September 16, 2005, 07:05:25 PM »
@Codesmith:

This may be the case, but the Troika board uses
a 33MHz bus (e.g. the slots are 5V-keyed which
only allows 33MHz) just like Pegasos II uses a
33MHz bus instead of the 133MHz the Discovery II
chip may provide.