kicad-developers team mailing list archive

[Wayne Stambaugh <stambaughw@xxxxxxxxx>]

I agree with you in principal but the practical side of these changes is
far more subtle as demonstrated by the simulation and erc issues.  The
invisible power pin issue has been around for as long as I can remember
(mid 80s).  Oddly enough, op-amps typically have power pins shown on all
units where logic gates hide the power pins on all units.  I'm not sure
about the logic (pun intended) behind this but it has been this way for
a long time.

We will be able to fix this once the new symbol file format is
implemented.  The current symbol file format has no way to indicate
individual unit interchangeability so there is no way for the spice
netlist formatter to add the power pin unit to each interchangeable unit
so the spice model pin count matches the symbol pin count.  We have
effectively thrown spice users under the bus which I really don't like
doing.  In the short term, we can recommend that they use the old logic
and op-amp symbols.

On 7/12/2018 10:04 AM, Rene Pöschl wrote:
> Sadly the old symbols are completely unusable in many modern circuits
> which use more then one power supply for different parts of the circuit.
> Hidden power pins are not the way to go! The fix for this bug must come
> from a different side then reintroducing hidden power pins.
> 
> On 12/07/18 13:46, Wayne Stambaugh wrote:
>> Rene,
>>
>> Bug https://bugs.launchpad.net/kicad/+bug/1781290 may be an issue.  The
>> decision to separate symbol power pins as a separate symbol unit caused
>> this bug.  I didn't think about this when the changes to the symbol
>> libraries where made but it is going to cause issues for anyone trying
>> to create simulations.  I preferred the old symbols but it's not
>> something I feel strongly about but given that these changes caused this
>> issue we may need to rethink this decision or provide alternative
>> symbols for spice simulation.
>>
>> Cheers,
>>
>> Wayne
>>
>> On 7/12/2018 5:36 AM, Rene Pöschl wrote:
>>> The libs should be ready to go. We might still fix some minor things
>>> till the release but we do not have any showstopper topics open.
>>>
>>> On 11/07/18 20:49, Wayne Stambaugh wrote:
>>>> Are there any critical bugs remaining to be fixed for the stable 5
>>>> release?  I didn't see any thing outstanding but I may have missed
>>>> something while I was on vacation.  I'm going to create a 5.0.0
>>>> milestone for the last few remaining bugs and shoot for a 7/20 tag date
>>>> unless there are any more critical bugs lurking about.  I will also
>>>> create 5.0 and 5.1 branches.  If I tag on 7/20, I would like to make
>>>> the
>>>> release announcement on 7/27.  Does anyone see any issues with these
>>>> dates
>>>>
>>>> How do stand with our installers?  I saw the macos installer was making
>>>> some nice progress.
>>>>
>>>> Are the doc devs, library devs, and translators (except for the recent
>>>> minor string changes) ready?
>>>>
>>>> Is there anything else I'm missing?  I really would like to make these
>>>> dates.  I have an Olimex TERES laptop kit that I've been dying to play
>>>> around with but I know once I start on that, everything else will get
>>>> pushed to the back burner so I'm not going to start until version 5 is
>>>> released. :)
>>>>
>>>> Cheers,
>>>>
>>>> Wayne
>>>>
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>>>
>>>
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> 
> 
> 
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