macintosh-portable

Attention!

The original Macintosh Portable have finally surfaced. They can be found here:

• nicpunt github
• archive.org

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

Apple Power Manager Chip (PMGR)

This is Mitsubishi M50753 Microcontroller with embedded EPROM.

Apple Sander-Wozniak Integrated Machine (SWIM)

This is a floppy controller chip, full chip spec is here. Pin 0 is in the top row of the chip, considering how the text is printed on it.

Versatile Interface Adapter (VIA)

This is G65SC22PE-2, full chip spec is here.