[U-Boot-Users] Hang after relocating u-boot code...

[Wolfgang Denk]

Hello,

in message <20040101035021.6532.qmail at web15001.mail.bjs.yahoo.com> you wrote:
>
> > Is it _exactly_ the same design, with the same types
> > of SDRAM chips?
> 
> Thanks you so much for your hints.I missed this key
> point.Yes,two chips of MT48LC16M16A2-75-B(1-1) on
> LITE_DW board with cs1 and two chips of
> MT48LC16M16A2-75-IT-C(2-2) on my board with cs1.I
> guess both are the same type.Am I right?

And the same CPU, same clock sources, etc. - all exactly the same?

> Thanks for correcting my views on UPMA RAM WORD.I am 
> studying on burst mode of SDRAM and hope it is the
> problem.

Usually (in 99% of all cases) it is.

> encountering the headache,I sometimes suspect that
> there are some defaults on my hardware layout.Is it

Ther eit goes again. Please remember that we don't know your hardware
design. Not the schematics, and neither the board layout.

> possible that the same design with the same chips
> would have different results for technics reasons in
> some cases?

Of course this is possible. Poor production  quality  may  make  each
board behave differently. It ain't much fun do debug such a system.

Best regards, and a Happy New Year!

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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