[Milkymist-devel] Mico32 migration

[Shawn Tan]

Hi Sebastien,

Could you give me a rough idea of how much of a speed up is observed? Is it in 
the order of 10%/20%/50%/70%?? It would be useful to know this. (=

Cheers.

On Friday 03 July 2009 02:45:20 am Sébastien Bourdeauducq wrote:
> Hi,
>
> I just finished migrating and debugging the design with the Mico32 soft
> processor (instead of AEMB).
>
> I did not do a lot of testing yet, but it seems that the software is
> running much faster now (AEMB was only running at 50% speed because of the
> threading).
>
> The only trick was that the processor does not work when configured for
> using direct mapped caches while it works perfectly when switching to 2-way
> set associative caches - bug in Xst or Mico32?!
>
> Also, synthesis with ISE 11 uncovered a problem with the DCMs that generate
> the SDRAM clock - the FACTORY_JF parameter was incorrect and that could be
> the source of the problems seen on some boards.
>
> Sébastien
>
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