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Re: gEDA-dev: =?utf-8?q?Broken_slotting?=
>
> But even that's tricky. Consider a quad opamp. Published SPICE models
> for such things generally are for one slot. So, unlike board layout,
> the SPICE netlister should really consider such a thing to be four
> separate components. But this is probably not universal.
>
Converting each slot to a separate component is much safer, no problem with renumbering pinseq attributes. Each spice component can get unique name by adding suffix "B" for slot 2, "C" for slot 3 and so on.
Other problems with current system:
1. What to do with common power pins? How to guess how to connect them or it is OK to have up to 4 set of VCC/GND nodes in single subcircuit? 14-pin LM324 becomes 20-pin Spice subcircuit.
2. What to do with unused 4-th amplifier in package? Spice does not like unconnected (single component) nodes or floating parts of circuit.
3. Models of multislot components have to be created especially for gEDA
Logic simulators also work on gate level and not on package level.
Wojciech Kazubski
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