naps

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This adds a verify method to the `axi_writer_demo.py` to find errors in the `DramPacketRingBufferStreamWriter` implementation.

rroohhh

There are some additional things that should go into the cache key: 1. clock constraints 2. `NMIGEN_*` environment variables 3. maybe the `nmigen`, `nmigen-boards`, `...` version

rroohhh

To simplify code and reduce the possibility for bugs, we want to rework the way addresses and the memorymap works. 1. Addresses should be in units of the bus word...

rroohhh

This adds a remapper, that reorders the pixels coming from the cmv12k to follow the `ImageStream` convention, though notably with more than a single pixel per cycle. Untested in hw,...

rroohhh