Attribute can be attached to an object or in certain cases (like the net= attribute) can be free floating (not attached to anything). The free floating attributes are also called toplevel attributes.
The net= attribute is a text item which takes on the following form:
net=signalname:pinname,pinname,pinname,...
where
net= | The attribute name (always the same, lowercase) |
signalname | The signal or net being defines (like +5V, GND, etc...) |
pinname | The pin name (or number) which is assigned to this signal/net (or pin names/numbers) |
The signalname cannot contain the : character (since it's a delimiter). The pinname is the pin name (A1, P2, D1, etc...) or pin number (1, 2, 5, 13, etc...). The pinname cannot contain the , character (since it's also a delimiter). pinnames are typically the same sort of numbers/names like the pin#=# attribute (if your familiar with that attribute).
You can only have ONE signalname per net= attribute, but you can have as many pinnames/numbers as you want.
Ales Hvezda 2004-12-28