Problem trying to address custom hardware

Oliver King-Smith oliver.king-smith at
Thu Aug 26 08:29:20 EST 2004

Things are working much better.  Both the driver and the main code work
without crashing now.

> Others addressed your core problem, but you should know that this
> mmap request won't produce the desired result. You need MAP_SHARED
> since MAP_PRIVATE will result in a COW when you attempt to modify
> your register.

I am not sure I understand why this needs to be MAP_SHARED (it sure does
though).  Is there a good resource I can read to understand this a bit


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