[Virtex 4 PPC] Which Linux?

[Stephen Neuendorffer]

> -----Original Message-----
> From: linuxppc-embedded-bounces+stephen=neuendorffer.name at ozlabs.org
[mailto:linuxppc-embedded-
> bounces+stephen=neuendorffer.name at ozlabs.org] On Behalf Of IngoM
> Sent: Monday, February 04, 2008 5:55 AM
> To: linuxppc-embedded at ozlabs.org
> Subject: [Virtex 4 PPC] Which Linux?
> 
> 
> Hello,
> 
> we develop a new laser-ranging-system and our hardware freaks have
choosen
> the Virtex 4 FX 12 on the "AVNET FX12 Mini-Module". The system had to
> deliver the raw data via UDP (12 Mbyte/sec) and on TCP the processed
data
> (about 6 Mbyte/sec). When you get the processed data via TCP then no
data
> send by UDP.
> 
> I'm confused by the following:
> 
> 1) Hard-TEMAC vs. Soft-TEMAC.
> Avnet provide a demo for the module which using Soft-TEMAC. If I get
it
> right this core has to be licenced. But when ther is a hard-TEMAC why
pay
> for it?

Generally speaking, if you have the hard temac, you should use it.  The
new EDK cores do this transparently. (see
http://www.xilinx.com/bvdocs/ipcenter/data_sheet/xps_ll_temac.pdf)  Note
that the emaclite license has recently been made free, although this
core doesn't support gigabit rates, which it looks like youll need.

Steve