Re: gEDA-user: Missing the printable docs for gschem

[John Doty <jpd-atMUNGEDwispertel_dot_net>]

On Nov 28, 2007, at 11:23 PM, Klaus Rudolph wrote:

> Hi,
>
> I am searching for the documentation of gschem and especially for
> creating subcircuits with geschem. I need a subcircuit 16 times on a
> pcb, so I want to use that feature. Long time ago I have used it, but
> could not find any documentation anymore. All what I found is the
> geda-wiki which contains a lot of dead links and circular links to it
> self but not the information I need. And yes, I want it in a printable
> version like pdf or ps. Yes, here are two questions:
>
> 1) where is the printable documentation gone
>
> 2) how to create subcircuits for gschm->pcb toolchain.
>

In gschem:

Make a symbol representing the subcircuit. Include the attribute  
source=whatever.sch, where whatever.sch is the schematic of the  
subcircuit. In whatever.sch, attach input and output symbols from the  
"io" symbol library. The refdes= attributes of these symbols should  
match the corresponding pinlabel= attribute of the subcircuit symbol.  
You may then put in as many of the subcircuit symbols as you wish  
into your higher level design. Works with other flows, too: you're  
not restricted to pcb.

Here's a simple example:

SeqCell.sym

SeqCell.sch

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@noqsi.com




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