Re: gEDA-user: Multiple symbol for one part??

["Samuel A. Falvo II" <sam.falvo@xxxxxxxxx>]

On 6/26/05, Andy Fong <boringuy@xxxxxxxxx> wrote:
> I don't quit unterstand. The refdes in the symbol file now is set to U?.
> Are you saying just use the same refdes for the schematic(eg. U1 for
> all symbols)?
> You said give one of them a value and footprint. What value are you refering to?

In the symbol file, refdes is set to U?.  In the actual schematic,
you'll want to change it to a consistent value.

For example, when placing four gates of a 7400 chip, each will appear
in the schematic as having 3 pins (1, 2, and 3), and U? as the refdes.
 Changing the 2nd, 3rd, and 4th item to U1 (assuming the first is also
U1), then editing the "slot" attribute will reveal the subsequent
slots.  That will adjust pin numbers and the like.

What I personally don't get is how to have different *shapes* for the
different slots.  For example, suppose I make a CPU part with hidden
power.  The first slot would be the 38-or-so pins that I'd need to
connect address, control, and data buses with.  Then slot 2 would just
be Vss and Vdd.  THAT is what I personally don't know how to do yet
(although, admittedly, I haven't really had a need for that just yet).

--
Samuel A. Falvo II