LEON2 or microblaze
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LEON2 or microblaze

 
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R!SC
Guest
Posted: Tue Jan 04, 2005 5:19 pm    Post subject: LEON2 or microblaze Reply with quote
hi all,

i have buy a development board spartan-3 fga based.
http://www.silica.com/en/products/evaluationkits/SP3%20Development%20kit.html

i heve read from a little time the LEON2 CORE. I have a question:

Which thing you me councils for this board? uclinux on microblaze or LEON2
on uclinux?

what different between LEON2 and microblaze?

thanks lots.
Regards
R!SC
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John Williams
Guest
Posted: Wed Jan 05, 2005 3:38 am    Post subject: Re: LEON2 or microblaze Reply with quote
Hi

R!SC wrote:

Quote:
i have buy a development board spartan-3 fga based.
http://www.silica.com/en/products/evaluationkits/SP3%20Development%20kit.html

i heve read from a little time the LEON2 CORE. I have a question:

Which thing you me councils for this board? uclinux on microblaze or LEON2
on uclinux?

You will achieve a much higher max clock freq with microblaze than
LEON2, because Microblaze is specifically tuned for the Xilinx parts
(and other reasons).

Regards,

John
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Kenneth Land
Guest
Posted: Wed Jan 05, 2005 9:32 pm    Post subject: Re: LEON2 or microblaze Reply with quote
"John Williams" <jwilliams@itee.uq.edu.au> wrote in message
news:newscache$tgdt9i$ao4$1@lbox.itee.uq.edu.au...
Quote:
Hi

R!SC wrote:

i have buy a development board spartan-3 fga based.

http://www.silica.com/en/products/evaluationkits/SP3%20Development%20kit.html

i heve read from a little time the LEON2 CORE. I have a question:

Which thing you me councils for this board? uclinux on microblaze or
LEON2
on uclinux?

You will achieve a much higher max clock freq with microblaze than
LEON2, because Microblaze is specifically tuned for the Xilinx parts
(and other reasons).

Regards,

John

I'm finding out that fmax not a useful indicator of performance. The bottom
line is how fast can the core execute your algorithm. Sure you might get a
100MHz vs. 50MHz fmax, but if reads take 12 clocks for the 200Mz core vs. 3
for the 50 MHz core then which would you rather have? fmax is for shiny
brochures IMO.

Ken
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