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docs: Reference chapters with doc tag
Fix some formatting.
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@ -11,7 +11,7 @@ yosys-config
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The yosys-config tool (an auto-generated shell-script) can be used to query
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The yosys-config tool (an auto-generated shell-script) can be used to query
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compiler options and other information needed for building loadable modules for
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compiler options and other information needed for building loadable modules for
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Yosys. See :ref:`chapter:prog` for details.
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Yosys. See :doc:`/yosys_internals/extensions` for details.
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.. _sec:filterlib:
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.. _sec:filterlib:
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@ -67,7 +67,8 @@ Things you can't do
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- Process high-level languages such as C/C++/SystemC
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- Process high-level languages such as C/C++/SystemC
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- Create physical layouts (place&route)
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- Create physical layouts (place&route)
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+ Check out `nextpnr`_ for that
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- Check out `nextpnr`_ for that
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.. _nextpnr: https://github.com/YosysHQ/nextpnr
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.. _nextpnr: https://github.com/YosysHQ/nextpnr
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@ -37,9 +37,9 @@ The :cmd:ref:`opt_expr` pass
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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This pass performs const folding on the internal combinational cell types
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This pass performs const folding on the internal combinational cell types
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described in :ref:`chapter:celllib`. This means a cell with all constant inputs
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described in :doc:`/yosys_internals/formats/cell_library`. This means a cell
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is replaced with the constant value this cell drives. In some cases this pass
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with all constant inputs is replaced with the constant value this cell drives.
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can also optimize cells with some constant inputs.
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In some cases this pass can also optimize cells with some constant inputs.
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.. table:: Const folding rules for ``$_AND_`` cells as used in :cmd:ref:`opt_expr`.
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.. table:: Const folding rules for ``$_AND_`` cells as used in :cmd:ref:`opt_expr`.
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:name: tab:opt_expr_and
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:name: tab:opt_expr_and
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@ -1,5 +1,3 @@
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.. _chapter:prog:
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Writing extensions
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Writing extensions
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==================
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==================
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@ -223,8 +223,8 @@ Cells
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Declares a cell, with zero or more attributes, with the given identifier and
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Declares a cell, with zero or more attributes, with the given identifier and
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type in the enclosing module.
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type in the enclosing module.
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Cells perform functions on input signals. See :ref:`chapter:celllib` for a
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Cells perform functions on input signals. See
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detailed list of cell types.
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:doc:`/yosys_internals/formats/cell_library` for a detailed list of cell types.
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.. code:: BNF
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.. code:: BNF
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