Cannot use ML310 DDR

hi,

i'm trying to work with the ddr sdram on the ml310 development board. i
tried creating a simple base system with the ddr using  the bsb wizard.
i also changed the ucf file as in the sample file provided. however, i
keep getting 'memory test - failed" when running the generated memory
test program. can anybody help me?

Hi ,
        I also had the same problem, but after i patched the UCF for
ml310_base_design.zip everything worked fine...
One of the questions that I have is where is your DDR (on the PLB or on
the OPB)..I have ours set up on the OPB and everything works fine...

        The other thing that I would recommend is to use one of the
designs from the web.
http://www.xilinx.com/products/boards/ml310/current/index.html and then
try it out before
you start using your own.

--
Parag

king_azman wrote:
> hi,
>
> i'm trying to work with the ddr sdram on the ml310 development board. i
> tried creating a simple base system with the ddr using  the bsb wizard.
> i also changed the ucf file as in the sample file provided. however, i
> keep getting 'memory test - failed" when running the generated memory
> test program. can anybody help me?

I've had similar problems with MicroBlaze designs (not PPC).  I was
able to use the memory only after reseting the board after programming.

Stephen

Hi..

Thanks for your input.

> I also had the same problem, but after i patched the UCF for
> ml310_base_design.zip everything worked fine...
> One of the questions that I have is where is your DDR (on the PLB or on
> the OPB)..I have ours set up on the OPB and everything works fine...

I've already patched the UCF (rewrite actually - coz I have different
net names).
I have it on my PLB - that might be the thing that I should try. But,
it shouldn't
be a problem right?

> I've had similar problems with MicroBlaze designs (not PPC).  I was
> able to use the memory only after reseting the board after programming.

Yupp.. it will show successful test for all 3(32-, 16- & 8-bit test)
after a few (not one)
reset - but still, it's not stable.. it still fail some tests (but not
all.

-k.az-