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baldengineer / bit-preserve

Project for capturing vintage, classic, aka old computer schematics in KiCad.
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Numerous issues. See description #128

Open reifsnyderb opened 8 months ago

reifsnyderb commented 8 months ago

Hello,

I took the schematic, reverted it back to Rev. 0, imported the willegal gerbers, and was able to compare the schematic with the gerbers.

Issues include: Wrong CAS on many RAM chips. Wrong RA6 on many RAM chips. Latches on Video Generation schematic duplicated on RAM schematic.

I've uploaded the corrected Rev. 0 schematic at: https://github.com/reifsnyderb/Apple-II-R0

reifsnyderb commented 8 months ago

I found another problem in the Rev 0 schematic. I've fixed it and need to upload.

reifsnyderb commented 8 months ago

Files fixed and now believed to be an exact match to the Rev 0 board.

reifsnyderb commented 8 months ago

Additional issues to check: Connections on B8 Color killer transistor connections