Macintosh-HW/macintosh-portable
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Macintosh Portable Reverse Engineered Schematics
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Pawel Pieczul 338be8303c Progress on PMGR chip
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macintosh-portable-12v-generator.sch Progress on PMGR chip 2019-06-08 17:09:30 +02:00
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macintosh-portable-power-distribution.sch Progress on PMGR chip 2019-06-08 17:09:30 +02:00
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README.md Added PMGR description 2019-06-01 12:36:25 +02:00
sym-lib-table Symbol library cleanup 2019-06-01 12:17:55 +02:00

README.md

macintosh-portable

Introduction

This is an attempt to reverse-engineer Macintosh Portable motherboard's power distribution and management subsystem.

  • The files can be opened and edited using KiCad.
  • Check out the PDF releases of the schematics.
  • You may take a look at my collection of vintage computers: oldcrap.org

V1M Hybrid Board

front resistors back

Apple Power Manager Chip (PMGR)

This is Mitsubishi M50753 Microcontroller with embedded EPROM.

M50753-pinout M50753-pins