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It's the very first version of a library/command line utility tocompile and decompile Cyclone V bitstreams, as used in the de-10 nano(used in MiSTer) and the future Analogue Pocket.

It's a normal cmake project. Create a build directory, run cmake

It takes the usual cmake variables (CMAKE_INSTALL_PREFIX,CMAKE_BUILD_TYPE) and also proposes the variable COMPRESSION_LEVEL tochoose the level of compression of the internal data. It's asize/time choice. Default is 1.

Some quick tests on a good laptop are in the following table. The runtime is for running the bels command for a 5CGTFD9C5F23I7 (gt300f, thebiggest).

Go into the lib directory, run 'make'. This will generate acommand-line utility named mistral-cv. You can start it from thatdirectory, but nowhere else because it looks for the routing databasesin ../gdata. Read the doc, that should help. It's very, very raw atthis point.

The makefile does not currently build the library as a library. Buteverything that's not main.cc is in fact the library. There is onlyone header file, cyclonev.h.

There are a lot of things that can be done to help without having tolook inside quartus. Meanwhile mapping of the blocks and work on thetimings will go on.

A bunch of stuff is unsure or not know at all on logic blocks. Theycan be analyzed through creating appropriate verilog files, compilingthem with quartus and decompiling them with mistral-cv.

• The common part of LABs (routing of clocks, enables, clears) is very unsure.
• Mlabs in rom/ram mode are unknown.
• DSPs and M10ks are really unknown, neither the mux usage nor theports mapping is unknown.
• Most peripheral blocks have their ports mapped, or are going to havethem, but the mux usage is not understood.