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Date: Sun, 5 Aug 2012 13:24:29 +0200
From: Kai-Martin Knaak <kmk AT familieknaak DOT de>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] parts of a device to different (schematic)
 subsheets
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karl AT aspodata DOT se (Karl Hammar) schrieb am  5. August 2012:

> I see. In "opamp" you connect things via pins and subsheet
> port-symbols, in "name" via non-mangled net names.
>=20
> If you have non-mangled net names you seem cautious to not have any=20
> unnamed net within the subsheets, which seems to be a to big burden to=20
> be worth it.

There are two gnetlistrc options that affect net names in hierarchies.
"hierarchy-netname-mangle" refers to net names given by the
netname=3D attribute and those automatically set by gnetlist. The other,
"hierarchy-netattrib-mangle", just acts on net names given by the net=3D
attribute of pins. This allows me to differentiate between power nets
and regular nets.

In the gnetlistrc I usually enable hierarchy-netname-mangle but disable=20
hierarchy-netattrib-mangle. That way, the GND symbol just works on all
sub sheets while all other nets receive a name prefixed wiith the
refdes of the subsheet. With net=3D attribute mangling also enabled, I'd
have to provide ports for the the power net on the sub sheet and on the
sub sheet symbol.=20

The downside of this mangle exception is that I need to provide a
local gnetlistrc file in the project or in $HOME/.gEDA. The default
system-gnetlistrc would not yield the intended connections. You can
guess from the power ports on the bottom of my sub sheet symbol that I
sometimes choose to explicitly hand over all nets used in the sub sheet.=20

---<)kaimartin(>---
--=20
Kai-Martin Knaak

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