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baldengineer / bit-preserve

Project for capturing vintage, classic, aka old computer schematics in KiCad.
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SOFT5 generates Output connected to Output Error | Apple II+ #121

Closed baldengineer closed 10 months ago

baldengineer commented 10 months ago

A2C and A2D are NAND gates. Their inputs are tied to GND which forces their outputs HIGH. The Apple II+ schematic uses these unused gates (of A2) to pull-up the SOFT5 signal.

baldengineer commented 10 months ago

Setting ERC to exclude this violation since it was done on purpose.