.. cerebrum documentation master file, created by
   sphinx-quickstart on Fri Jul 23 23:15:38 2021.
   You can adapt this file completely to your liking, but it should at least
   contain the root `toctree` directive.

.. as I keep forgetting how to activate preview in VSCodium...
   osx
   cmd+shift+r preview
   cmd+k cmd-r preview aside

####################################
Welcome to cerebrum's documentation!
####################################

.. toctree::
   :maxdepth: 5
   :titlesonly:
   :caption: Contents:

   C64 <c64/index.rst>
   Style Guide <./style_guide.rst>
   TODO <todo.rst>


..
   AMIGA 500 <amiga/amiga_500/index.rst>
   AMIGA 600 <amiga/amiga_600/index.rst>



=====
Hints
=====

| <signal_name>_l
| active low, f.e. if IRQ_l is active, signal logic level is low

Examples of binary logic levels

+------------+----------------+----------------+----------------------+
| Technology | L voltage      | H voltage      | Notes                |
+============+================+================+======================+
| CMOS       | 0 V to 1/3 Vdd | 2/3 Vdd to Vdd | VDD = supply voltage |
+------------+----------------+----------------+----------------------+
| TTL[3]     | 0 V to 0.8 V   | 2 V to Vcc     | Vcc = 5 V ±10%       |
+------------+----------------+----------------+----------------------+


---------------------
brainstorming toctree
---------------------


.. raw:: html

   + index


new block
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