RE: [Virtex 4 PPC] Which Linux?

-----Original Message-----
From: linuxppc-embedded-bounces+stephen=3Dneuendorffer.name@ozlabs.org

[mailto:linuxppc-embedded-

bounces+stephen=3Dneuendorffer.name@ozlabs.org] On Behalf Of IngoM
Sent: Monday, February 04, 2008 5:55 AM
To: linuxppc-embedded@ozlabs.org
Subject: [Virtex 4 PPC] Which Linux?
=20
=20
Hello,
=20
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.
=20
I'm confused by the following:
=20
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