This repository contains the reference design for a 3.3V version of the Apple IIe's IOU custom IC.
The RTL (VHDL source code) project is located here: RTL for the Apple IIe's MMU and IOU
This project was made possible thanks to the support and contributions of a few key individuals.
Notable thanks go to:
- Henry S. Courbis of ReActiveMicro not only was instrumental in the development of the VHDL code but also was the spark that initiated this project. His generous support and deep technical insight made this project possible.
- Ralle Palaveev is more than a contributor — he is the co-creator of the 3.3V adapters. His impressive skills made what seemed impossible look easy: fitting everything into a 40-pin DIP-sized PCB.
And lastly, a special thanks to Leeland Heins @SoftwareJanitor, who thoroughly tested this project. His steady encouragement was a much-appreciated source of motivation during the tougher stretches of development.
| Category | Hardware Components |
|---|---|
| Motherboards |
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| CPUs |
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| AUX Cards |
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| ROMs |
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| Disk Interfaces/Drive |
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| Other |
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Other hardware reference designs are located here:
- 5V IOU adapter (To be done)
- 5V MMU adapter (To be done)
A rendering of the IOU, front and back