Hi all, I have what is probably a bit of a stupid question with regard to gschem: how do I create (and use) symbols with both multiple identical (slotted) elements and one or more dedicated pins?
Usually, I try looking up a symbol with a similar layout, but I got a bit confused here. For example, there are two different CMOS 4053 symbols. The 4053-1.sym features separate dual-channel switches, selectable by defining the slot. But how do I connect the Enable and VEE pins (#6 and 7, respectively) to an arbitrary other component? And how to connect the power pins? When I look into the .sym file, I see that VDD, VSS and VEE have been defined as nets (with Enable tied to VSS -- which is not good). Does this mean that all VEE pins from multiple 4053's are automatically tied together? The alternative symbol, 4053-2.sym, is not slotted, but also has named nets for VSS, VDD and VEE. I'm actually trying to create a symbol for my latest favourite, the TS925 quad opamp with standby input and phantom ground output (see http://www.st.com/stonline/products/literature/ds/4949/ts925.pdf). How do I define this device as four slotted opamp elements with dedicated standby and phantom ground pins? Or would I better create one big, 16-pin symbol incorporating everything? Once more my apologies if this is a stupid question, but I couldn't find a conclusive answer in the mailing list archives or the gEDA wiki. Thanks in advance, best regards, Richard Rasker _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user