> Request (1): reset-value of all the bits in this register should come from
> some config-pins, which are sampled just at next edge of reset de-assertion
> [...]

> Request (2):  these bits should be just once-writable after Power-On-Reset.


Personally, I would like to have a simple, bug-free, easy-to-use, FPGA-friendly 
core. I can't see the value of such special features for the general user. In 
my view, they would add unnecessary complication and yet more cases to test.

> I personally would not want users to hack the RTL much, because it
> becomes difficult to maintain it as separate branch. 

If someone needs that kind of advanced features, my guess is that he'll be 
branching anyway.

Regards,
  rdiez
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