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minor doc edits

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stefan schippers 2024-02-16 16:56:51 +01:00
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doc/xschem_man/tutorial_instance_based_implementation.html
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@ -225,11 +225,11 @@ m1 y a VSSPIN VSSPIN modn18 w=wn l=lln ad='wn *4.3u' as='wn *4.3u' pd='wn *2+8.6
...
</pre>
<p> You see the <kbd>@modeltag</kbd> will be substituted looking first in the mos transistor attributes
(but there is no definition there), then in the containing symbol attributes (and there is
(but there is no definition there), then in the containing symbol <kbd>template</kbd> attributes (and there is
a <kbd>modeltag=18</kbd> definition).</p>
<p> Now suppose you want to place another instance of <kbd>inv4.sym</kbd> but with a different modeltag:
Since we know that spice does not allow model names to be passed as parameters we need to specialize the
<kbd>inv4.sym</kbd> subcircuit to a new <kbd>inv_1.sym</kbd> subcircuit.
<kbd>inv4.sch</kbd> subcircuit to a new <kbd>inv_1.sch</kbd> subcircuit.
Therefore we give the attribute <kbd>schematic=inv4_1.sch</kbd>
to the second inv4 instance. We also set there a different modeltag: <kbd>modeltag=13</kbd></p>
<img src="instance_based_implementation_11.png">