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Restructure the existing documentation to group the content by intended audience. This produces four sections: * An introduction section, relevant to "newcomers" to Ibex. * An user guide, intended for hardware designers (integrators) and software developers who want to integrate Ibex, and develop software for it. * A reference guide, which provides background information on the design. This section is essential when working on Ibex, and also documents our design decisions. * A developer guide aimed at people modifying Ibex itself. It consists mostly of process and tool documentation: how to run the verification after a code change, how to use GitHub, etc. This commit is large, but text is mostly unchanged. A couple of introductions and tables of content were added, but no significant changes to the text have been made. These will be done in follow-ups. Signed-off-by: Philipp Wagner <phw@lowrisc.org>
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.. _examples:
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Examples
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========
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To make use of Ibex it has to be integrated as described in :ref:`core-integration`.
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FPGA
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----
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A minimal example for the `Arty A7 <https://reference.digilentinc.com/reference/programmable-logic/arty-a7/start>`_ FPGA Development board is provided.
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In this example Ibex is directly linked to a SRAM memory instance.
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Four LEDs from the board are connected to the data bus and are updated each time when a word is written.
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The memory is separated into a instruction and data section.
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The instructions memory is initialized at synthesis time by reading the output from the software build.
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The software writes to the data section the complementary lower for bits of a word every second resulting in blinking LEDs.
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Find the description of how to build and program the Arty board in ``examples/fpga/artya7/README.md``.
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