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37 lines
1.6 KiB
Markdown
37 lines
1.6 KiB
Markdown
# macintosh-portable
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## Introduction
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This is an attempt to reverse-engineer **Macintosh Portable** motherboard's power distribution and management subsystem.
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* The files can be opened and edited using [KiCad](http://www.kicad-pcb.org/).
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* Check out the [PDF releases](https://github.com/ppieczul/macintosh-portable/releases) of the schematics.
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* You may take a look at my collection of vintage computers: [oldcrap.org](https://oldcrap.org)
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## V1M Hybrid Board
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## Apple Power Manager Chip (PMGR)
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This is [Mitsubishi M50753](http://www.bitsavers.org/components/mitsubishi/_dataBooks/1989_Mitsubishi_Single-Chip_8-Bit_Microcomputers.pdf) Microcontroller with embedded EPROM.
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## Apple Sander-Wozniak Integrated Machine (SWIM)
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This is a floppy controller chip, full chip spec is [here](http://dec8.info/Apple/Apple%20Floppy%20Notes/SWIM%20Chip%20User's%20Ref.pdf). Pin 0 is in the top row of the chip, considering how the text is printed on it.
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## Versatile Interface Adapter (VIA)
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This is G65SC22PE-2, full chip spec is [here](http://datasheet.elcodis.com/pdf2/74/25/742581/g65sc22p-3.pdf).
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