Re: MCF5208, cache and fec/dma question

Thanks Bill.

I didn't understand the cache at all.  The MCF5373 manual gives a good
explanation
as to how it all works.
Fortunately I only invalidate small blocks.

I have to say that although I like the Coldfire chips the documentation is
 absolutely dreadful
in several areas.

Paul





I think there might be a bug in the inner loop below.  The most significant
address bits do not affect which cache set may contain a given line in main
memory.  Figure 5-6 in the MCF5373 reference manual shows how this works.
For large values of 'len_bytes', I think perhaps the code below will
execute
the inner loop many more times than necessary.


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