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Docs: reworking scripting_intro

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Now comes *after* example_synth, with references back to it.
Includes some minor adjustment to the `fifo.ys` script to better demonstrate the `select` command.
Still needs an updated section on `show`.

Also includes some other minor updates.
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Krystine Sherwin 2024-01-18 15:33:59 +13:00
parent 74d2c918cd
commit 14b7c581fa
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docs/source/using_yosys/synthesis/opt.rst
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@ -26,6 +26,8 @@ to run this pass after each major step in the synthesis script. As listed in
Constant folding and simple expression rewriting - :cmd:ref:`opt_expr`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. todo:: unsure if this is too much detail and should be in :doc:`/yosys_internals/index`
This pass performs constant folding on the internal combinational cell types
described in :doc:`/yosys_internals/formats/cell_library`. This means a cell
with all constant inputs is replaced with the constant value this cell drives.