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On Wed, 15 Dec 2010, Wayne Stambaugh wrote:
On 12/15/2010 7:19 AM, Brian Sidebotham wrote:
I would have thought there would need to be a way in the syntax of showing what was a selectable/finished part and what was merely a "symbol" or partial part which should not be allowed to be entered into the schematic directly.
The possibility of adding _just_ symbols with pin function definitions should be allowed for flexibility. For discrete and component array design this is very convenient. For example ona may draw the logic with discrete transistors (without any consideration on actual components), then breadboard the stuff and finally decide to take Q1, Q3 and Q4 to Q6 from the transistor array in production.
If you don't have any objections, I'll update the specification.
Pin and gate swap brought some questions. How to handle the input equality in the example NAND gate? Currently there is no pin swap example and pin_renum seems to be one possible way for gate swap. Some thought for automatic and dynamic text positioning for values and designators might be in order to allow rotation and mirroring without rotated and mirrored text. It may need something more than just justification hints, but I've got some ideas how to do it without part file support. Otherwise I think new part file format is approaching perfection :)
-Vesa
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