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Numerous issues. See description #128

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reifsnyderb opened this issue Jan 16, 2024 · 3 comments
Open

Numerous issues. See description #128

reifsnyderb opened this issue Jan 16, 2024 · 3 comments

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

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

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

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