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Rev. 0 Apple II motherboard schematic and PCB, now in KiCad (was Re: Preserving hardware designs)

Newsgroups comp.sys.apple2
Subject Rev. 0 Apple II motherboard schematic and PCB, now in KiCad (was Re: Preserving hardware designs)
References <eFfcQ.826029$Ra5f.541406@fx13.iad>
Organization USS Voyager NCC-74656, Delta Quadrant
From scott@alfter.diespammersdie.us (Scott Alfter)
Message-ID <TNzgQ.2402$PvV.2354@fx45.iad> (permalink)
Date 2025-07-24 23:59 +0000

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A work in progress, but the schematic is complete and the PCB is based on a
known-working layout:

https://gitlab.alfter.us/salfter/Apple_II_Rev0

The schematic was created from the Red Book.  The PCB started out as an
import of Mike Willegal's gerbers, which provides most of the traces. 
Errors in the Red Book schematic (and, in a few places, errors in my capture
of the schematic) were fixed by seeing what connected to what in the PCB
until DRC no longer complained of shorted nets or unconnected pins.

-- 
  _/_
 / v \ Scott Alfter (remove the obvious to send mail)
(IIGS( https://alfter.us/         Top-posting!
 \_^_/                            >What's the most annoying thing on Usenet?

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Preserving hardware designs scott@alfter.diespammersdie.us (Scott Alfter) - 2025-07-11 21:48 +0000
  Re: Preserving hardware designs scott@alfter.diespammersdie.us (Scott Alfter) - 2025-07-11 21:52 +0000
  Rev. 0 Apple II motherboard schematic and PCB, now in KiCad (was Re: Preserving hardware designs) scott@alfter.diespammersdie.us (Scott Alfter) - 2025-07-24 23:59 +0000

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