58 lines
2.2 KiB
Markdown
58 lines
2.2 KiB
Markdown
These are links to the official Apple Macintosh SE schematics.
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Source website: https://museo.freaknet.org/gallery/apple/stuff/mac/andreas.kann/schemat.html
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Unfortunately, there are no BOMARC schematics available for the
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Macintosh SE.
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The Internet Archive also has a copy of purportedly the same Macintosh
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SE schematics scan.
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https://archive.org/details/Macintosh68kSchematics
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PLEASE NOTE: Here is a link to the Macintosh 512k schematics, very
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useful for filling in the missing details.
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20210101/https://www.folklore.org/images/Macintosh/schematic.jpg
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Here's a link to some redrawn Macintosh 128k schematics.
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20210403/https://kiramek.com/21test95/EarlyMacSchematics.pdf
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Due to the illegiblity of the original Main Logic Board (MLB) page 1
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scan, this repository also contains a [retrace of the
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schematic](retrace_se_mlb_p1.pdf), striving to be as faithful as
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possible to the original. The retrace was done by hand and careful
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eyeing in Inkscape, after doing some simple image processing on the
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input scan. A script that uses the ImageMagick `convert` command is
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included to reproduce the processing steps.
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Notes related to the accuracy of the retrace.
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* The pinouts of all integrated circuit components, the RAM SIMMs, and
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the PDS slot have been verified with second sources.
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* The resistor values have been checked to be consistent with the
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reference designators, but **not all reference designators** have
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been verified to be consistent with the placement on the printed
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circuit board.
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* The schematic info blocks in the upper and lower right corners have
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been cross-checked with scans of other official Apple schematics to
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attempt to make them as faithful as possible to the original
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contents.
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Notes on the source SVG file:
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* The processed scan is linked as a hidden and locked image object.
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To view both the retrace and the original scan together, find the
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image object (possibly in the XML hierarchy) and make it visible.
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The image object is locked to make it easier to draw on top of.
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* The specific `sans-serif` font I used on my system is DejaVu Sans.
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So long as your system `sans-serif` font has similar metrics,
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everything should work just fine, otherwise you can replace the font
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family name with DejaVu Sans.
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