On Monday 26 February 2007 22:34, Marc Moreau wrote: > On Mon, 26 Feb 2007 16:06:57 +0000 > > Seb James <[EMAIL PROTECTED]> wrote: > > Problem 2 > > -------------- > > I am placing this symbol in a design which is split into two regions, > > with opto-isolators connecting them. This means I have two ground nets, > > and I also have two 5V nets. > > > > Instead of using the nets GND and +5V, I have gnd_left and gnd_right and > > +5v_left and +5v_right. > > > > But... the nets in my symbol are GND and +5V. What is the best way to > > redefine these nets? Should I manually add the 50 or so ground/power pins > > to my symbol, so that I can wire each ground pin to either gnd_left or > > gnd_right in my schematic? Or is there another way of setting what the > > "GND" net in my symbol actually connects to? Can I redefine the nets for > > those pins after I placed the symbol in my schematic? > > This is why I don't use 'hidden' nets, they get in the way when using > multiple gnd/vcc. > > I group all the vcc and gnd together by expected application, and add a > line in the schmatic. All the pins are the same length so a line is easy > draw. But if an other application comes up, I have all my different nets > available. > > Also, Looking at your symbol, it might be nice to split your symbol by > application. ie one symbol for each isolated half. Just give them the same > refdes and all is well. > > I attached my 4part example. Look at power and ADC. they show what I did. > > I used djboxsym.pl[1] to make my symbols. > > [1] http://www.gedasymbols.org/user/dj_delorie/tools/djboxsym.html > > -Lares
Thanks both to you and to John Griessen for your suggestions. I will consider them carefully in the next couple of days to get this design finished. best regards, Seb _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
